This page pulls together technology-focused articles from various departments within JPT.
Underbalanced Drilling With Coiled Tubing in Marginal Shallow Wells
The complete paper describes a recent directional coiled-tubing drilling (DCTD) job completed for an independent operator in the Appalachian Basin.
Isolation Barriers With Coiled Tubing in Plug-and-Abandonment Operations
Plug-and-abandonment (P&A) operations can be expensive, leading to negative net present value. Historically, P&A operations in the North Sea—estimated to hold some 3,000 wells of declining production—were performed with either drilling or workover rigs.
Coiled-Tubing Telemetry Intervention in Shut-In Conditions
When a new horizontal well in Asia was incapable of unassisted flow, coiled tubing (CT) was selected for the perforation and stimulation intervention. Mechanical isolation was required to ensure that the stimulation fluids entered only the new zones.
Experimental Investigation of Fracturing With Propellant in a Large Sandstone Block
This paper describes an experimental study with a new propellant and aims to understand the pattern of fracture creation with these propellants.
If the papers presented at the SPE/ICoTA Coiled Tubing and Well Intervention Conference and Exhibition this March are anything to judge by, then coiled-tubing drilling seems to be regaining some interest in the broader market.
The evolution of horizontal drilling and multistage completions has changed matrix stimulation from the “more acid, better result” belief to effective lateral distribution and deeper penetration with less acid.
Engineering Approach To Designing Fluid Diverters: Jamming and Plugging
Fluids introduced into a reservoir for stimulation typically take the path of least resistance and, therefore, frequently go into areas with open flow paths. In many cases, those areas are not the targets of stimulation.
Advances in Dendritic Acidizing Reveal Light at the End of the Tunnel
Study of Expandable-Tubular Collapse Leads To Risk-Based Strength Development
The objective of this study is to investigate comprehensively the effects of the expansion process on the pipe mechanical properties and collapse performance and to develop a reliable risk-based collapse-strength design for the expandables.
Risk-Based Statistical Approach To Predict Casing Leaks
A probabilistic approach was introduced to improve interpretation of data from electromagnetic corrosion logs. This paper presents a statistical risk-based approach to predicting casing leaks using electromagnetic corrosion logs.
Reliability-Based Casing Design Unlocks Reserves in a High-Pressure Gas Field
This paper presents work performed to characterize the probability of collapse as a function of reservoir-abandonment pressure using reliability-based design (RBD).
CO2 injection is a successful EOR technology that has been deployed extensively in the Permian Basin. Further expansion of CO2 EOR has been limited by the availability of affordable CO2 rather than the existence of suitable target reservoirs. This situation may be about to change.
Qualification of Biopolymer in an Offshore Single-Well Test
A single-well polymer-injection and back-production test has been performed in an oil and gas field offshore Norway. The objective of the test was to verify at field conditions the properties measured in the laboratory for the biopolymer schizophyllan.
Multireservoir, Multinetwork Production Optimization of an Omani Reservoir
In the complete paper, a new, fully coupled implicit tool was used to model an onshore Omani asset with multiple reservoirs, each featuring different fluids and multiple networks.
Horizontal Steam Injectors in the Kern River Field
A horizontal-steam-injection pilot project has been under way for the last 4 years in the Kern River heavy-oil field in the southern San Joaquin Valley of California.
New Adsorption Media Technology Meets Water-Treatment Challenges
ProSep’s Osorb Media Systems are providing a unique solution for treating the water coming from chemical enhanced oil recovery operations and removing the dissolved hydrocarbons.
Risk-based design is very important, especially for complex systems, because a deterministic approach may not provide a strong underpinning to the reliability estimation of the downhole tools. We have to reduce the probability of failure.
JPT Technology Minute Poll: Which Technology Would You Choose?
If your management could only let you choose one of these technologies with which to optimize your next well, which would it be?
Norwegian Firm Adds Smarts to Offshore Coring
Coring is essential to offshore exploration programs—but sometimes cores are taken from the wrong formation or return to surface in poor condition. One firm thinks it can solve these costly issues with a first-of-a-kind coring device that uses logging instruments that add accuracy and integrity.
DeepStar Accomplishments in Continued-Service Realm
Offshore operators must grapple with ways to keep aging floating facilities on station beyond their original design life.
Developing an Influx-Management Envelope for a Deepwater MPD Operation
The influx-management-envelope (IME) concept is an advanced, innovative way to assess influx conditions in managed-pressure-drilling (MPD) operations, offering an improved tool for the decision-making process.
Intelligent Completion in Laterals Becomes a Reality
A producer and a service company have collaborated to develop a downhole system to merge multilateral technology and intelligent completions to create “smart laterals.”
Technology Trends in Evaluating Cement Jobs Using Logging Tools
This paper reviews the technology trends in cement-job evaluation using logging tools and considers the main advantages and concerns associated with each technology.
Continuous Innovation Achieves Better Zonal Isolation in Extended-Reach Wells
Operators at a UAE field experienced several challenges while cementing production sections. A systematic approach was applied that used standard cementing best practices as a starting point.
As I read through the abstracts and papers that have been presented in the past year, I notice several key themes: verification of cement placement, development of new materials as a barrier, development of new additives to improve the cement barrier, and enhancement of existing techniques.
As the resources that the industry develops become increasingly challenging, access to a broader range of options and new and developing approaches allows more-efficient and -effective recovery.
Managed-Pressure Cementing: Successful Deepwater Application
This paper reviews a successful managed-pressure-cementing (MPC) operation and presents findings and lessons learned.
Hybrid Solution to the Grand Challenge of Developing Deepwater Stranded Gas
While the floating liquefied-natural-gas (FLNG) option initially looked promising, high capital expenditure and very high operational expense (OPEX) have limited its potential application, with four potential FLNG projects being canceled in Australasia in the last 2 years.
Intelligent Fields Technology
What I find impressive is the number of people who were hiding in normal discipline jobs who are coming out of the closet with their Python scripts. And, it’s working. In many ways, order is coming to the mess, efficiency is coming to tiresome manual activities, and richness is coming to decisions.
A Neural-Network Approach for Modeling a Water-Distribution System
The authors present a new data-driven approach to estimate the injection rate in all noninstrumented wells in a large waterflooding operation accurately.
Embedded Discrete Fracture Modeling With Artificial Intelligence in Permian Basin
Current long-reach technology already has a large effect on oil recovery. Many possible improvements, however, remain, and we see new contributions every year.
Organophilic-Clay-Free Invert-Emulsion Fluid Helps Drill Record-Length Well in the UAE
This paper discusses the successful design, laboratory testing, and performance of an innovative, low-solids, organophilic-clay-free invert-emulsion fluid (OCF-IEF) used to drill the reservoir section of an extended-reach-drilling (ERD) well.
Simultaneous Drilling, Completions Concept Hopes To Extend Drilling Distances to 30 km
This paper presents a concept that enables simultaneous drilling and completion, with an aim to extend well reach substantially and with an ultimate objective of constructing 30-km-long production wells.
Hole Cleaning, Torque Management Lead to Longest Extended-Reach Well in Brazil
The Peregrino project, located in the post-salt zone of the Campos Basin, presents immense challenges for drilling extended-reach wells. This paper shares challenges imposed by the well profile and downhole environment on the design and execution phases.
The Dawn of MEMS Sensors for Directional Drilling
Sensor technology in the oil industry changes infrequently. Improvements in MEMS sensor technology are creating rapid momentum toward the use of tiny, rugged, and inexpensive sensors to replace larger, costlier, and more fragile legacy-technology sensors in directional drilling.
Leaching Study Conducted on Phenolic Novolac Resin-Coated Proppants
Prompted by concerns about possible leaching from phenolic novolac resin-coated proppants (RCPs) during operations, Fairmount Santrol conducted analysis that showed no leaching of free formaldehyde or free phenol from its phenolic novolac RCPs.
Swellable-Nanogel-Injection Pilot in Mendoza Norte, Argentina
Experimentation reveals that swellable nanogels increase their size faster than expected or produce aggregation leading to serious blocking problems at the sandface. This paper studies if the addition of a surfactant can help improve injectivity.
First Three-Zone Intelligent Completion in Brazilian Presalt: Challenges and Lessons
Since the first intelligent completion was installed 20 years ago, the systems have become increasingly complex in order to reach productivity and optimization goals, allowing real-time independent monitoring and management of each zone in the well.
Triple-Zone Intelligent Completions Aid Extended Well Tests of Exploratory Wells
This paper describes an extended-well-test campaign using intelligent completions in a presalt reservoir. To understand reservoir behavior during production better, several options were analyzed for the first extended well test.
Comparison of Various Offshore Industrial Gas Technologies
Offshore oil-exploration drilling and testing are key for the production of oil; however, a number of associated challenges, particularly the handling of associated gas, must be overcome.
Offshore Drilling and Completion
As the resources that the industry develops become increasingly challenging, access to a broader range of options and new and developing approaches allows more-efficient and -effective recovery.
Natural Gas Processing and Handling
Despite a dip earlier in the year, natural-gas prices remained steady over 2017, averaging $2.99/million Btu. … Early 2018 has been a different story, however, with natural-gas prices already hitting a couple of peaks (of greater than $5/million Btu according to the Henry Hub Spot Price history).
Natural-Gas-Liquids Recovery—Retrofit Breathes New Life Into Old Scrubber
This paper presents details of the retrofit scrubber design and shows the importance of using high-efficiency separation internals.
Hybrid Solvent Helps Ease Bottlenecking in Natural-Gas Plant
Processing sour natural gas is a challenge. If mercaptans are present in the sour gas, the limited mercaptan-absorption capacity of the well-known alkanolamine solvents can be a problem.
Integrating Managed-Pressure Drilling Into HP/HT-Well Planning
An early commitment to integrate MPD into an HP/HT drilling operation can make MPD more than just an enabling tool and turn it into a performance tool that offers significant operational benefits.
Ultradeep-Field Study: Extreme-Underbalanced HP/HT Coiled-Tubing-Conveyed Perforating
An early commitment to integrate MPD into an HP/HT drilling operation can make MPD more than just an enabling tool and turn it into a performance tool that offers significant operational benefits.
Some technologies important for HP/HT have steadily developed and have seen increased uptake even throughout the downturn. These technologies have the potential to revolutionize the performance and safety of HP/HT drilling operations.
History Matching and Forecasting
One unfortunate consequence of a base-case model, however, is the risk of an anchoring effect, in which case we may underestimate uncertainty. Essentially, the anchoring effect refers to our tendency to rely too heavily on the information offered, introducing a bias in the model-construction process
All-Electric Subsea Well Brings Benefits vs. Traditional Hydraulic Technology
Currently, the state of the art for subsea well control is based on hydraulic technology. Hydraulic fluid is supplied from a host facility to the subsea wells through dedicated tubes within an umbilical and is distributed to the wells.
Successful Recovery and Stimulation in a Long HP/HT Horizontal Well in One Intervention
The case history presented in the complete paper describes the performance of an acid-fracturing intervention in an HP/HT well in which this intervention was the last procedure considered to evaluate the productivity of a Marrat Formation well.
Rapid S-Curve Update Using Ensemble Variance Analysis With Model Validation
In the complete paper, the authors propose a novel method to rapidly update the prediction S-curves given early production data without performing additional simulations or model updates after the data come in.
Enhancing Model Consistency in Ensemble-Based History Matching
The aim of this work is to present the effectiveness of a fully integrated approach for ensemble-based history matching on a complex real-field application.
Ensemble-Based Assisted History Matching With 4D-Seismic Fluid-Front Parameterization
An ensemble-based 4D-seismic history-matching case is presented in the complete paper. Seismic data are reparameterized as distance to a 4D anomaly front and assimilated with production data.
Well Construction Performance Service Bridges Planning-Execution Gap To Boost Efficiency
A new holistic approach to optimizing wellbore economics is bridging the gap between planning and execution and bringing well construction into the digital era to improve data use, enhance collaboration, boost efficiency, and increase safety.
Horizontal Shale Well EUR Determination Focused on the Permian Basin: An Integrated Method
Big-data mining techniques can help determe the type-curves and the resulting estimated ultimate recovery of an asset being evaluated for acquisition.
Industry Q&A: Physics-Based Reservoir Simulation for Enhanced Data Analysis and Risk Evaluation
Indy Chakrabarti, senior vice president of product management and strategy at Emerson Automation Solutions talks about developments in software solutions for the oil and gas industry.
Significant improvements to completions design and manufacturing have been made recently to accommodate long laterals and multiple fracturing or acidizing stages for different reservoir types, lithologies, and conditions.
Fracturing Volcanic Rock in India: Continuous Improvements Over 11 Years
This paper summarizes key engineering discoveries and technical findings observed during the execution of 200 hydraulic-fracturing diagnostic injection tests in the Raageshwari Deep Gas (RDG) Field in the southern Barmer Basin of India.
Well-Placement Timing, Conductivity Loss Affect Production in Multiple-Fracture Wells
This paper describes numerical-simulation results from a three-well pad in a stacked liquids-rich reservoir (containing gas condensates) to understand the interaction between wells and production behavior.
Improved Monitoring System for Heavy-Oil Steam-Assisted-Gravity-Drainage Wells
The complete paper provides an overview of the development of fiber-optic sensing for steam-assisted-gravity-drainage (SAGD) applications, including a review of more than 10 years of work in development and field applications in western Canada.
Implementing an Integrated Production Surveillance and Optimization System
The complete paper describes some of the technical challenges faced in deepwater operations and the methodology adopted for implementing an integrated production surveillance and optimization (IPSO) system to mitigate the risks.
Despite the recent downturn, a significant number of pilot- or demonstration-scale applications of existing technologies to develop new heavy-oil fields or new technologies to develop existing fields have been reported over the past year.
Integrated Surveillance Offshore Turkmenistan
The complete paper describes a work flow in which wells and production networks in the Cheleken Block offshore Turkmenistan are automatically modeled daily with steady-state and transient tools and ultimately analyzed by the Cheleken Block Central Data Gathering System.
Cyclic Steam Stimulation Results in High Water Retention for Kuwaiti Heavy-Oil Field
Cyclic steam stimulation (CSS) is one of the principal enhanced-oil-recovery methods for heavy oil. CSS was performed in some of the wells of a heavy-oil field in Kuwait. Multiple cycles were applied in these wells. However, the total water produced in each cycle was much less than expected.
Chemical Stimulation at a Heavy-Oil Field: Key Considerations, Work Flow, and Results
This paper presents the planning and execution of a matrix-stimulation pilot project in the heavy-oil Chichimene Field in Colombia.
In the onshore world, one of the big advances for addressing increased sampling requirements has been to go to 24-hour shooting with continuous recording of simultaneously sweeping vibrators. This has been enabled by innovations in both acquisition and processing.
Doctrines vs. Realities in Reservoir Engineering
The appreciation of empirical realities permits the improvement of commercial depletion planning and enables a greater number of projects. This paper reviews the evidence for and against three doctrines in current use to develop depletion plans.
Acquisition With Autonomous Marine Vehicles: Field Test
The feasibility test conducted offshore Abu Dhabi demonstrated the successful and safe deployment, seismic-data acquisition, and retrieval capabilities of the AMV and 3D sensor array.
Advances in 4D Seismic and Geophysical Monitoring of Deepwater Fields
Integrated surveillance is critical for understanding reservoir dynamics and improving field management. A key component of the surveillance is areal monitoring of subsurface changes by use of time-lapse geophysical surveys such as 4D seismic.
Unconventional-Reservoir Characterization With Azimuthal Seismic Diffraction Imaging
The complete paper proposes an azimuthal plane-wave-destruction (AzPWD) seismic-diffraction-imaging work flow to efficiently emphasize small-scale features associated with subsurface discontinuities such as faults, channel edges, and fracture swarms.
There are two ongoing trends in the industry. The first is an increasing wave of digitization. Second, piggybacking on the increased access to sensor and equipment data, analytics and artificial intelligence are on an exponential rise in the industry.
Improving Corrosion Management by Using a Micelle Detection Technology
Corrosion inhibitors are often the first line of defense against internal corrosion, and effective mitigation relies on proactive monitoring and management of these inhibitors to allow for regular feedback and dose adjustment.
Enhanced Gas Recovery: Benefits Seen in Downhole vs. Wellhead Gas Compression
Extensive analysis has led to the conclusion that downhole gas compression provides a greater increase in gas production than wellhead gas compression because of the additional drawdown created.
Closed-Loop Drilling Offers Advantages in Process Safety and Cost Savings
This paper details the operational effects of closed-loop drilling to demonstrate its ability to yield operational-process-safety improvements and cost savings over conventional methods.
Challenges and Lessons of Implementing a Real-Time Drilling Advisory System
This paper discusses the technical challenges related to implementing a rigsite, real-time drilling advisory system and current solutions to these challenges.
Future Workforce Education Through Big-Data Analysis for Drilling Optimization
An operator partnered with the drilling-automation research group at The University of Texas at Austin to develop a work flow for big-data analysis and visualization. The objectives were to maximize the value derived from data, establish an analysis toolkit, and train students on data analytics.
Welcome to the Offshore Facilities feature in this month’s JPT. The three papers featured in this section were selected out of 141 submitted to SPE covering various elements of offshore facilities design, construction, installation, operation, and inspection.
Turritella FPSO—Design and Fabrication of the World’s Deepest Producing Unit
The Turritella FPSO (Fig. 1 above) is the deepest floating production system in the world and presented many challenges to successful execution of the surface host facilities.
Field Trials Help Boost Processing Capacity of Offshore Facility Above Nameplate Limit
The Constitution spar in the Gulf of Mexico has an original nameplate separation capacity of 70,000 BOPD and 200 MMscf/D of gas. Production potential from future developments is expected to exceed this limit.
The papers selected for this issue cover advances and opportunities in well testing. They also apply reservoir fundamentals as well as sound engineering judgment, using quantity but also quality data sets from conventional and unconventional assets.
Well-Performance Study Integrates Empirical Time/Rate and Time/Rate/Pressure Analysis
The purpose of the complete paper is to create a performance-based reservoir characterization by use of production data (measured rates and pressures) from a selected gas-condensate region within the Eagle Ford Shale.
Catalog of Well-Test Responses in a Fluvial Reservoir System
The complete paper aims at a better understanding of the effect of channel content in complex fluvial channel systems on well-test-derivative responses.
Better Permeability Estimation From Wireline Formation Testing
The complete paper presents different methods of using pressure-transient data from WFTs; many of these methods are summarized here.
Maintaining Injectivity of Disposal Wells: From Water Quality to Formation Permeability
An extensive laboratory study was carried out with two objectives: to evaluate the effect of water quality on injectivity of disposal wells with reservoir core plugs and to restore injectivity of damaged wells.
Coreflooding is one of the principal tools through which we qualify drilling and completion fluids and assess the potential for formation damage, but is it relevant? By “relevant,” I mean does it give an accurate portrayal of the likely performance of the selected fluids.
Drilling-Fluid Behavior During Reservoir-Formation Drilling and Completion
A reservoir-conditions coreflood study was undertaken to assist with design of drilling and completion fluids for a Norwegian field. Multiple fluids were tested, and the lowest permeability alterations did not correlate with the lowest drilling-fluid-filtrate-loss volumes.
Modeling of Production Decline Caused by Fines Migration in Deepwater Reservoirs
The complete paper presents a numerical work flow to simulate the effect of flow-induced fines migration on production decline over time in deepwater reservoirs.
Optical Sensors Monitor Vulnerable Top Sections of Flexible Risers
The integrity management of flexible pipes used in subsea production plays a major role in maximizing the availability of the production systems while minimizing safety and environmental risks.
Drilling Technology and Rigs
Phrases such as “dawn of the new age of the oil and gas industry,” and “the fourth industrial revolution” echoed through halls of SPE events in 2017 and into the new year, with rapid advancements in big data management, digital connectivity, and high-performance computing.
Big Data for Advanced Well Engineering Holds Strong Potential To Optimize Drilling Costs
Considering the significant weight of drilling costs in upstream ventures, saving even a few hours of drilling could lead to substantial cost savings on the overall capital expenditures (Capex). Thanks to the big data revolution, cost optimization still has strong potential in drilling operations.
Joint Industry Project To Develop Downhole X-Ray Technology
ConocoPhillips and Statoil Petroleum have signed a joint-sponsorship-development agreement with Visuray Technology to fund development of a downhole cement-integrity-evaluation technology that will have the capability of evaluating cement integrity even behind multiple casing strings.
Multiphase Compressor Eliminates Need for Wellsite Separation of Gas, Liquids
A newly developed compressor undergoing field trials could significantly change, and bring substantial cost savings to, the way wellsites are designed.
Cybersecurity for Upstream Operations
Optimizing the design, function, and benefits of the logical cyber-representation of physical asset environments is an evolving trend for the oil and gas industry to gain operational efficiency.
A New Three-Phase Microemulsion Relative Permeability Model
The complete paper presents a new three-phase relative permeability model for use in chemical-flooding simulators.
A Review of Improved-Oil-Recovery Methods in North American Unconventional Reservoirs
In the complete paper, three stages of review have been combined to find out the applicability of the most-feasible improved-oil-recovery (IOR) methods in North American unconventional reservoirs.
Estimation of Flow and Hysteresis Parameters Applicable to WAG Experiments
In the complete paper, a new assessment of the WAG-hysteresis model, which was developed originally for water-wet conditions, was carried out by automatic history matching of two coreflood experiments in water-wet and mixed-wet conditions.
Novel Brownfield-Rejuvenation Approach Uses Near-Wellbore-Saturation Monitoring
Fields in the Upper Assam-Arakan Basin have been studied intensely to find prospective sweet spots, perforation intervals for new wells, and potential workover candidates. These forecasts, guided only by dynamic-numerical-model results, have had mixed results when implemented in the field.
EOR Performance and Modeling
Progress in chemical EOR, from polymer to alkaline/surfactant/polymer, has been significant. Not only are there new chemicals with improved recovery capabilities, but also the cost of the chemicals is being reduced continuously. All those factors led to more operators using chemical EOR.
Integrated Water-Injection Analysis Uses Salinity as Tracer in Giant Brownfield
In this paper, an integrated work flow is proposed for brownfields where oil production is driven mainly by water injection. Produced-water salinity plays a key role, acting as a natural tracer and, thus, helping avoid additional costs for new data acquisition.
Data-Driven Technologies Accelerate Planning for Mature-Field Rejuvenation
This paper presents a data-driven technology and associated work flow for fast identification of field-development opportunities in mature oil fields that accelerates subsurface field-development planning and reduces the time requirement from months to weeks.
Design and Surveillance Tools Help Lower Integrity Risks for High-Temperature Wells
Decommissioning Optimization in a Multioperator Landscape
The optimization model presented in the complete paper is the first multioperator offshore network-optimization model that considers decommissioning in the Netherlands.
Well Integrity and Well Control
Nonaqueous drilling fluids have been used extensively by the industry, particularly in complex drilling scenarios. They carry some concerns, however, with implications for well integrity.
Decommissioning and Abandonment
The supply chain is now actively working to develop low-cost solutions and is gaining valuable experience through recent projects (as documented in many recent SPE papers). Owners need to engage the supply chain early with the relevant asset data for planning and execution of decommissioning.
Reducing Costs of Well Plugging and Abandonment While Verifying Risk
The complete paper describes how various P&A designs can be compared by use of a risk methodology that takes account of degradation mechanisms, potential flow rates, and the effect on the environment.
Multiwell Deployment of a New Abandonment System
A new downhole-tool-based abandonment system was developed and deployed successfully on four wells for a major operator on a field in the North Sea.
Use of Managed-Pressure Drilling Requires Adjustments To Bridge Gap to Well Control
Managed-pressure drilling (MPD) challenges the conventional drilling paradigm, along with drilling-contractor and operator policies and standards. Conventional drilling practices for connections, flow checks, tripping, and well control have been long understood and standardized.
Pressure Measurements Plus Simulation Help Differentiate Between Downhole Events
In this study, pressure-while-drilling technologies are combined with software simulations to differentiate drilling-fluid thermal expansion, wellbore ballooning, and formation influx during riserless drilling operations.
Mature Fields and Well Revitalization
There is a growing awareness that maximizing field production involves not only having a clear understanding of subsurface intricacies but also ensuring that existing surface facilities are performing at their best to handle production in an environmentally safe manner.
System Cuts P&A Cost by Creating Rock-to-Rock Barrier in One Trip
Archer’s Stronghold Barricade well decommissioning system leaves the casing in place, while perforating, washing, and cementing the annulus to create a cement barrier in a single trip.
Ultra-Low-Invasion Fluid Technology Enables Enhanced Drilling, Reduced Formation Damage
A fluid technology has been developed to deposit a thin, impermeable barrier over the pores and microfractures of weak, underpressured, and otherwise troublesome formations to maintain wellbore stability and reduce formation damage.
Integrating Technology and Organizational Alignment for a Portfolio Implementation
One E&P company has found that implementing and sustaining a portfolio process require technical solutions and application of best practices for three critical elements: production forecasting, project modeling and economic evaluation, and portfolio management and decision making.
A More-Holistic Approach to Oilfield Technology Development
a holistic view of technology maturation that addresses both technical and nontechnical risks. The definition of success is expanded to include the establishment of successful, commercially viable, and sustainable solutions that meet end-user needs and requirements.
Production Optimization in Waterfloods: A New Approach to Interwell-Connectivity Modeling
In the complete paper, the authors present a novel methodology to model interwell connectivity in mature waterfloods and achieve an improved reservoir-energy distribution and sweep pattern to maximize production performance by adjusting injection and production strategy on the well-control level.
The papers highlighted in this article cover technical assessment of unconventional resource plays, portfolio optimization, and technology development, all very relevant in today’s environment.
Digitalization of Oil and Gas Facilities Reduces Cost and Improves Maintenance Operations
The digitalization of oil and gas facilities is becoming a new technical arena. Effective solutions can be used to convert data into information and knowledge, which can then be used to improve maintenance operations.
Eliminate Decision Bias in Facilities Planning
The complete paper holds that traditional facilities-planning methodologies, heavily based on design-basis documents and biased toward the most-conservative conditions, fail to recognize the entirety of operational conditions throughout the oilfield life cycle.
Bit Technology and Bottomhole Assemblies
Bottomhole assemblies (BHAs), as part of the drilling system, have dominating effects on the functionality and effectiveness of other system components. BHA design, usage, and monitoring must promote drilling-system compatibility, efficiency, and reliability.
How To Design a Bottomhole-Assembly Rotary-Speed Sweet Spot
Correct placement of the rotary-speed sweet spot of a bottomhole assembly (BHA) provides multiple benefits toward achieving the ultimate goal of drilling to section total depth in a single trip.
Continuous Inclination Measurements and BHA Modeling Help Detect Microdoglegs
Microdoglegs are a natural effect of any vertical or directional well that can explain a wide variety of downhole problems.
Development of Work Flow To Manage Fatigue of Bottomhole Assemblies
A new fatigue-management work flow provides drillers with a tool to simulate and predict the life expectancy of bottomhole assemblies (BHAs) before fatigue causes problems.
Water-Management Experience in a Mature Basin in South Argentina
As part of a comprehensive water-management strategy, this paper describes different process and operational considerations that are the result of 109 years of production in Argentina’s oldest basin.
New Salt-Tolerant Friction-Reducer System Enables 100% Reuse of Produced Water
This paper discusses the field trials of a new salt-tolerant friction-reducer system in the Marcellus Shale.
Breakthrough Polymer Water-Shutoff System Shows Promise for Carbonate Ghawar Field
A new water-shutoff polymer system has been developed for carbonate formations and shows great stability.
Production and Facilities
The overarching theme of work published during the past year relating to production and facilities is performance and productivity improvement—doing more with less at a lower cost.
Understanding and prioritizing water management is key for exploration-and-production operators, not only in terms of reducing overall cost but also as a means of mitigating operational risk, complying with changing regulatory requirements, and addressing environmental concerns.
Building Type Wells for Appraisal of Unconventional Resource Plays
The objective of the complete paper is to present an integrated work flow that can be used to build P90, mean, and P10 type wells, which represent the range of potential outcomes for the geologic subset in an unconventional resource play.
Lowering Adoption Barriers to MPD—Land and Sea
In the past, most wells have been drilled using conventional methods, but the landscape is changing as economic pressures have forced the drilling industry to refocus.
Deepwater HP/HT Drilling-Fluid Development and Applications in the South China Sea
Researchers have developed a novel water-based-drilling-fluid system compatible with deepwater HP/HT wells in the Lingshui Block on the basis of a conventional drilling fluid and further optimization.
Optimizing Lateral Well Spacing by Improving Directional-Survey Accuracy
The purpose of this paper is to demonstrate how inaccuracy in standard directional-surveying methods affects wellbore position and to recommend practices to improve surveying accuracy for greater confidence in lateral spacing.
Production Pressure-Drawdown Management for Fractured Horizontal Shale Gas Wells
The primary objective of this study is to address all known causes of productivity declines in unconventional shale gas formations with horizontal multifractured wells and to develop a fully coupled geomechanical/flow simulation model to simulate these production conditions.
3D Simulator Predicts Realistic Mud Displacement in Deviated and Horizontal Wells
The complete paper discusses the advancements in mud-displacement simulation that overcome the limitations of the previous-generation simulator and provide a more-realistic simulation in highly deviated and horizontal wells.
Offshore Production and Flow Assurance
Mitigation of flow-assurance problems continues to drive new production-technology applications and approaches. The three papers highlighted here focus on minimizing costs while providing safe, effective, and reliable operations.
Drilling and Completion Fluids
Drilling in high-pressure/high-temperature conditions poses numerous challenges. Drilling fluid is subjected to extreme pressure and temperature, and its properties such as viscosity are affected strongly by pressure and temperature. Viscosity decreases with temperature and increases with pressure.
Horizontal and Complex-Trajectory Wells
If it has been proved in the past that innovative technology is excellent for bringing more-efficient solutions to reduce costs, will digital technology be the panacea for the whole industry?
Gas Production Technology
Natural gas producers should remain happy campers for the foreseeable future; they are supplying an increasing long-term demand at an increasingly stable international market price.
Perforation and Flowback Highlights From the Gorgon Field, Offshore Australia
This paper contrasts the detailed perforating and flowback plan with the results of the operation where a number of planned, and some unplanned, contingencies were faced.
Hybrid Microseismic and Microdeformation Monitoring of a Coal-Seam-Gas Well
A hybrid downhole microseismic and microdeformation array was deployed to monitor fracture stimulation of a vertical coal-seam-gas (CSG) exploration well in the Gloucester Basin in New South Wales, Australia, to provide more-accurate insight into overall fracture height.
Wax-Deposition Experiments Decouple Hydrodynamic Parameters To Aid Scaleup
In this study, the effects of the hydrodynamic parameters are decoupled with specially designed flow-loop experiments. The results enhance understanding of the deposition behavior at various hydrodynamic conditions and aid in scaling up from laboratory to field conditions.
Low-Adhesion Coatings Provide Novel Gas-Hydrate-Mitigation Strategy
In this study, two coatings were produced and evaluated to determine their effect on hydrate adhesion onto carbon-steel surfaces.
Transient Simulation for Hydrate Mitigation Aims for Optimal Production in Kuwait Fields
This paper presents the traditional methods of hydrate mitigation used in the NKJ fields and the way in which a transient model was initially built and continuously improved.
New Magnetite Nanoparticles Allow Smart Drilling Fluids With Superior Properties
The effects of adding iron oxide NPs on the rheological and filtration properties of aqueous bentonite suspensions have been studied by several researchers.
New Antifoam Additive Shows Superior Ability To Reduce Air Entrainment in Cement Slurry
Zonal isolation is a critical part of wellbore construction. To achieve zonal isolation, cement must be properly mixed before pumping downhole.
3D Full-Field and Pad Geomechanics Models Aid Shale Gas Field Development in China
The oilfield-development plan (ODP) for a shale gas field at the southern edge of the Sichuan Basin in China started in early 2014.
Advancement in Openhole Sand-Control Applications With Shape-Memory Polymer
This paper summarizes a technology using SMP to provide downhole sand control in openhole environments.
Approach Redefines Ideal Project Scope and Facilities Size for Field Development
This paper investigates how decisions made through reservoir evaluation and drilling-and-completion planning affect the design of subsea production systems and, in turn, the design of production hosts.
Downhole Sand-Ingress Detection With Fiber-Optic Distributed Acoustic Sensors
This paper shows results from use of a new technology that uses in-well-conveyed fiber-optic distributed acoustic sensing (DAS) for the detection of sand-ingress zones across the reservoir section throughout the production period in real time.
Drive for Innovative Technologies Leads Industry to Unconventional Sources
Emerging technologies from medical science and the aerospace industry could have a disruptive impact on oil and gas operations. A panel of scientists looked into these technologies and discussed their potential role in the industry.
Enhanced Sweep Efficiency by Use of Smart Water in Tight Oil Reservoirs
Currently, there are few studies on smart waterflooding in tight and very tight oil reservoirs. This work examines smart-waterflood opportunities in such reservoirs.
Field Life Extension in Abu Dhabi Through Hybrid Development Concept
This paper describes an approach for optimizing the number and type of drilling centers required to enable the development plan to be flexible in design to accommodate infrastructure, facilities, drilling, and subsurface constraints.
Imbibition Oil Recovery From Tight Rocks With Dual-Wettability Networks in the Montney
Previous studies demonstrate that Montney rock samples present a dual-wettability pore network. Recovery of the oil retained in the small hydrophobic pores is uniquely challenging.
Natural-Language-Processing Techniques for Oil and Gas Drilling Data
This paper presents a method to compare the distribution of hypothesized and realized risks to oil wells described in two data sets that contain free-text descriptions of risks.
One-Trip Multizone Sand-Control-Completion System in the Gulf of Mexico Lower Tertiary
This paper provides perspective on the current state of multizone completion technology and issues encountered in the industry with developing a system that offers increased capabilities to meet the increasing challenges presented by the Lower Tertiary in the Gulf of Mexico.
New-Frontier Reservoirs II
While enhancing oil production from multizone, hydraulically fractured completions in tight reservoirs is not straightforward, recent studies have shown that applications such as gas injection and waterflooding have the potential to create significant improvement in oil recovery.
Petroleum Data Analytics
While many other industries have experienced tremendous benefits over the last few decades, adoption of data-driven analytics is still young in the oil and gas sectors. However, many challenges for full adoption exist in our industry.
Proxy-Based Metamodeling Optimization of Gas-Assisted-Gravity-Drainage Process
Unlike continuous gas injection and water-alternating-gas injection, gas-assisted gravity drainage (GAGD) takes advantage of the natural segregation of reservoir fluids to provide gravity-stable oil displacement.
Technique Blends Dimensionless Numbers and Data Mining To Predict Recovery Factors
This study shows that dimensionless numbers, together with data-mining techniques, can predict field behavior in terms of recovery factor for sparse data sets.
Water-Injection Operations and Gas-Injection Sensitivities in the Bakken Formation
This paper presents the performance results from one of the waterflood pilots in the Viewfield Bakken.
Sand Management and Sand Control
Production from sand-prone reservoirs is one of the more daunting tasks, with formidable challenges. Sand management and control remain as an old problem but with new challenges because of the suppressed oil and gas prices. Cost-saving and value-adding solutions are vital now more than ever.
Field Development Projects
The industry is evolving to a more factual approach to profitability, with emphasis in modeling the long-term scenarios with detail. And this applies for developments in both mature and new fields.
Tool Enables Complete Cased-Hole Formation Evaluation, Reservoir Saturation Modeling
Schlumberger’s new multifunction spectroscopy system builds on previous innovations to offer the first complete cased-hole formation evaluation and reservoir saturation monitoring capability that provides openhole-equivalent logging measurements.
New SCADA Systems Help Operators Fulfill Potential of the Digital Oil Field
Supervisory control and data acquisition systems no longer simply monitor operations and produce large volumes of data in static displays, but now collect production data from all operation data sources and contextualize and present them to workers in real time as meaningful, actionable information.
Collaborative Approach to Implementation Helps Realize Benefits of Drilling Automation
This paper describes a collaborative effort between an operator, a drilling contractor, and a service company to introduce specific aspects of automated technology to a major drilling operation.
There is intense focus across the industry on profitability in the current low-oil-price environment. Yet, today’s profitability is not the only challenge. Laying the groundwork for future profitability must also occur.
Drilling Systems Automation and Management
Over the past year, workshops and symposia have made it clear that consideration of data and digitalization plays an important role in transforming companies in the drilling industry. Systems automation requires a digital backbone and offers significant performance, cost, and safety benefits.
Deep High-Pressure Completions: A Case History Offshore Gulf of Mexico
A Gulf of Mexico case history is presented describing the successful delivery of two deep high-pressure high-rate-designed oil wells in an ultradeepwater environment.
Embedding Automatic Risk-Level Estimation and Performance Analysis in Drilling Plans
This paper presents a method that quantitatively evaluates the risk levels of a drilling-operation plan as a function of the underlying uncertainty associated with its description.
Gas Tracers: A Decade of Learning and Experience
This paper discusses a crestal gas-injection project that was carried out in a supergiant heterogeneous-carbonate oil field.
Integrated Cemented Inflow-Control-Device System Design
This paper discusses the first deployment of an ICD system combined with an OBC system for a workover operation in a mature producer well in the Kingdom of Saudi Arabia.
Integrated Completion Sensitivities for Horizontal-Well Design in the Vaca Muerta
The boom in organic shale plays has revealed the critical need to size hydraulic-facture treatments correctly to achieve commercial success.
Integrated Work Flow Mitigates Drilling Vibrations
A work flow that combines optimization of the drillstring and bottomhole-assembly (BHA) design during well planning and then applies advanced surveillance tools to a well-trained drilling crew yields reduced vibrations and higher drilling rates.
Laboratory Testing and Prediction of Asphaltene Deposition in Production Wells
This paper presents a methodology that begins by determining the ADE in the laboratory. Moreover, asphaltene-deposition rates for the tubing conditions can be measured using high-pressure/high-temperature coaxial-cylinder technology.
Monitoring and Mitigating Asphaltene Issues in a Deepwater Production System
This paper presents an integrated approach to evaluate the key elements of asphaltene risk for deepwater projects, the strategy to manage the issues during production implementation, and aspects to be considered in the mitigation of asphaltene in the field-development plan.
New Methods Analyze Asphaltene Deposition and Fouling in Reservoirs
Asphaltene precipitation and deposition in production tubing and surface facilities are well-documented issues, and different methods are available to manage them.
Reservoir Performance and Monitoring
While many efforts are focusing on the optimization of current technologies and the study of past reservoir performance to improve future developments, with fewer capital resources and personnel available, these efforts may yield only incremental improvements.
Satellite Monitoring of Cyclic-Steam Stimulation Without Corner Reflectors
The authors discuss a new way of extracting deformation information from radar imagery, contributing to improved accuracy of InSAR surface-elevation monitoring.
Three-Phase Flow in Fractured Porous Media: Investigation of Matrix/Fracture Interactions
The authors present the results of a detailed experimental study in which underlying pore-level-displacement physics of two- and three-phase flow in a fractured rock sample is investigated with high-resolution X-ray microtomography techniques.
The sheer complexity of the asphaltene molecule is now within our grasp as the digital age creeps up on our industry. Having the analytics to decipher and measure asphaltene structures gives us a chance to accelerate our understanding.
Data Aggregation and Distribution With Human Factors Incorporated
Researchers have developed a drilling-data-aggregation and -distribution system that seamlessly integrates all forms of data, file types, and communication protocols and incorporates human-factors engineering in the design.
Bakken Case Study: Fracturing-Plug Drillout Performance With Task-Built PDC Bit Design
A new line of specialized polycrystalline-diamond-compact bits have been tested in a series of Bakken wells. The bits’ integrated design allowed significant increases in drilling rate and the number of plugs drilled.
Cost Reduction of Subsea Boosting Systems by Use of Innovative Technologies
The costs of subsea boosting systems have been reduced by adopting three primary strategies: simplifying the system design to reduce weight and cost, simplifying the installation and intervention, and reducing complexity and risk.
Formation Evaluation: A Critical First Step
Emerging technologies have helped bring about multilateral, maximum-contact, and smart-completion wells, allowing reservoirs to be developed and produced much more efficiently and economically. In this, formation evaluation plays a critical role.
How Will Subsea-Processing Technologies Enable Deepwater-Field Developments?
This study examines how subsea processing (SSP) can develop into an important enabling technology for future ultradeepwater-field developments and long-distance tiebacks.
Improving the Relationship Between Flow-Zone Indicators With Lithofacies
The F field in the Middle East currently has more than 40 producing wells in the center of the structure. The uneven well distribution limits the understanding of 3D reservoir characterization, particularly in the flank areas.
In-Situ Fluid-Composition Analyses Improve Reservoir Management
This study focuses on recent experience in Saudi Arabia with crude-oil compositional analyses during pumpout with a wireline formation tester (WFT).
Profit Increase With New Subsea Boosting Products
Emphasis on identifying more-efficient subsea boosting solutions has led to a number of initiatives in the industry.
Stress Dependence of Sandstone Electrical Properties and Deviations From Archie’s Law
The resistivity index (RI) of Fontainebleau and Bentheimer sandstones was investigated at ambient and reservoir pressures down to low water saturations. The RI measurements show that both sandstones display Archie behavior at elevated pressure.
Subsea Hardware and Technology
As one of the more-mature and field-proven of the subsea processing technologies, boosting, which was first used in 1994, offers solutions that can accelerate production for earlier payback and increase oil recovery for both brownfield and greenfield projects.
Integrated Simulation Increases Efficiency of Deepwater Risk Management
In an effort to better understand well issues, a global offshore drilling contractor created a program of fully integrated deepwater-DP-drilling simulation exercises to scrutinize all critical aspects of deepwater well-control operations.
Company Integrates Human Factors Into Corporate Well-Control Manual
Many of the worst oilfield incidents have been attributable to human factors. Consequently, a corporate well-control manual was refreshed to include human factors in the management of well-control incidents.
Company’s Integrated Approach Tackles Fatigue Management
This paper describes the integrated approach taken by Petronas to reinforce effective management of fatigue.
Robot Removes Operators From Extreme Environments
Robots have the potential to move human operators away from uncomfortable, potentially risky environments and into comfortable, safe control rooms.
Risk Assessment of Fluid Migration Into Freshwater Aquifers in Colorado Basins
Wellbore-construction methods, especially casing-and-cementing practices for the protection of freshwater aquifers, have been reviewed in the Piceance, Raton, and San Juan Basins in Colorado.
Building Relationships With a Marginalized Community in Iraq
A consortium of international and national Iraqi oil and gas companies took operatorship of the Qarmat Ali water-treatment plant. They engaged and responded to community expectations for social investment while addressing the effects of operations.
Health, Safety, Security, Environment, and Social Responsibility
Our innovation across all aspects of health, safety, security, environment, and social responsibility not only helps our industry reduce the chances, or consequences, of unplanned events but also may help develop the capacity of a country or village to take care of its own citizens.
Research Progresses on Improving Subsea Produced Water Measurement Sensors
Widening the use of subsea separation and produced-water reinjection or discharge systems to unlock oil resources depends on improving subsea water-quality measurement.
Approaches for CO2 Capture and Sequestration Inspired by Biological Systems
In this study, several process alternatives for the permanent sequestration of carbon dioxide (CO2) as solid carbonates are evaluated.
Two things stood out when I looked at this year’s abstracts. First, well over half of the abstracts were related to electrical submersible pumps (ESPs). This is a significant increase from the last couple of years. Second, there was a clutch of artificial-lift-method-selection papers.
Artificial-Lift Selection Strategy To Maximize Value of Unconventional Oil and Gas Assets
This paper presents an artificial-lift selection process to maximize the value of unconventional oil and gas assets.
Artificial-Lift-System Selection Guidelines for Horizontal Gas Wells
This study presents a methodology to define the most-adequate artificial-lift technique on the basis of technical limitations, a suitability coefficient (based on an attributes table), and economic analysis toward horizontal well configuration.
Global emissions of CO2 resulting from the use of fossil fuels amount to approximately 35 billion tons/yr. How much of this can we capture? How much can we store or sequester? And, perhaps the most important question: How much will it cost and who will pay?
Enhancing Well Performance by In-Stage Diversion in Unconventional Wells
With multistage operations becoming the industry norm, operators need easily deployable diversion technologies that will protect previously stimulated perforations and enable addition of new ones. This paper reviews several aspects of the use of in-stage diversion.
First CO2-Enhanced-Oil-Recovery Demonstration Project in Saudi Arabia
An operator has designed a demonstration project for carbon dioxide (CO2) enhanced oil recovery (EOR) and has implemented it in one of its fields.
Integrating Enhanced Oil Recovery and Carbon Capture and Storage: Farnsworth Field
The Southwest Partnership on Carbon Sequestration (SWP) is one of seven large-scale demonstration projects sponsored by the US Department of Energy.
Method Addresses Difficulty of Modeling Heterogeneous Carbonate Bimodal Rocks
Because of their heterogeneity, carbonate reservoirs are more difficult to model than clastic reservoirs. The main difficulty comes from the number of different pore types, compared with the typical interparticle pore type in clastics.
New-Frontier Reservoirs I
You want to know how to immediately make a step change in your business and improve your own promotion prospects. You want to know the key technologies you should be implementing now. To develop your longer-term strategy, you want an awareness of future trends now. Consider your wish granted.
Northern Territory Unconventional Resources: A Regulatory Perspective
This paper outlines the key issues that must be addressed from a regulatory perspective in regard to the development of an onshore unconventional-gas industry in the Northern Territory.
Numerical Modeling of Unstable Waterfloods and Tertiary Polymer Floods for Viscous Oils
This paper addresses the challenges in modeling highly unstable waterflooding, using both a conventional Darcy-type simulator and an adaptive dynamic prenetwork model, by comparing the simulated results with experimental data including saturation maps.
Production Metrics To Predict Long-Term Performance of Unconventional Wells
In unconventional plays, comparing the effect of different completion designs or well-management strategies on well performance remains a challenge because of the relatively brief production history and lack of long-term field analogs of these plays.
Transient Coupled Wellbore/Reservoir Model Using a Dynamic IPR Function
Conventional inflow-performance-relationship (IPR) models are used in coupled wellbore/reservoir transient simulations, even if bottomhole-pressure conditions are assumed to be constant on the derivation of such IPR models.
Reservoir Simulation: "Optimization Under Uncertainty"
Nearly a decade after an SPE meeting in Bruges set industry-inspiring benchmarks for reservoir modeling, the time has come to overcome a new set of challenges.
Well-Performance Calculations for Artificial-Lift Screening
This paper focuses on a fit-for-purpose methodology to evaluate well-production performance for a wide range of artificial-lift techniques.
System Adds Reliability, Efficiency to Attaching Well Construction and Completion Tools
A new attachment system overcomes the limitations of traditional methods for securing tools and accessories to drilling and completion strings.
Challenges During Surface-Facility-Project Implementation for a Full-Field Polymer Flood
This paper presents key challenges in surface-facilities-project implementation during the construction and operational-readiness phase of a project and presents results from full-field implementation.
Coiled Tubing With Real-Time-Measurement Tools Helps Overcome Stimulation Problems
The treatment in a deepwater, frac-packed well with fiber-optic-equipped coiled tubing (CT) and a rotating, hydraulic high-pressure jetting tool achieved successful stimulation of a 500-ft-long frac-packed zone after several previous failures using different techniques.
Collapse Analysis of Perforated Pipes Under External Pressure
This work is a study of collapse pressure of perforated pipes to evaluate the effect of lateral perforations on the radial resistance of pipes under external pressure.
Cryogenic-Fracturing Treatment of Synthetic Rock With Liquid Nitrogen
This study aims to investigate the efficacy and feasibility of cryogenic-fracturing technology in enhancing the permeability of unconventional-reservoir-rock analogs.
Custom-Designed Coiled Tubing Leads to Success in Extended-Reach Operations
Advanced horizontal drilling, multistage hydraulic fracturing, and other technologies have helped make the Vaca Muerta shale oil and gas resource economically viable.
Significant progress in cost reduction has been made in the industry following the price downturn, not only in the direct cost of construction and operations but also through a determined drive to simplify and streamline new projects in concepts selected for facilities and wells.
Improving Casing Integrity by Induction Brazing of Casing Connections
Brazing technology allows metallurgical joining of dissimilar materials by use of a filler material.
Monitoring of Matrix Acidizing by Use of Resistivity Measurements
This paper describes the testing of a novel concept based on resistivity measurements to monitor acid-stimulation operations.
Tight formations are candidates for hydraulic fracturing as the default. However, the solubility of carbonate by various chemicals provides opportunities to extend the well drainage radius effectively without the intensive equipment, material, and infrastructure demand of hydraulic fracturing.
Novel Coiled-Tubing Perforation Technique and Stimulation in Carbonate Gas Well
This paper discusses a novel approach to abrasive perforating, including the first-ever use of an acid-soluble abrasive material and ending with CT-jetting-assisted nitrified stimulation.
Optimizing the Use of Miscible Injectant at the Greater Prudhoe Bay Fields
This paper provides an overview of all enhanced-oil-recovery (EOR) projects in the Greater Prudhoe Bay (GPB) region and presents the process and methodology for MI allocation to these projects and to individual injection patterns.
Overview of Carbon Dioxide Injection and Water-Alternating-Gas Sensitivity
This paper presents an overview of the SACROC Unit’s activity focusing on different carbon dioxide (CO2) injection and water-alternating-gas (WAG) projects that have made the SACROC unit one of the most successful CO2 injection projects in the world.
Systematic Coiled-Tubing-Efficiency Improvement Reduces Operational Time
Deepwater coiled-tubing (CT) well interventions can benefit from significant rig-time reduction and cost savings associated with improved efficiencies of surface processes.
We have seen in recent years many technological advancements in tubular-manufacturing technology. Tubulars also have become part of the data-transmission network and slowly will converge with the data-handling and data-transmission systems.
What Vacuum-Insulated Tubings and Casings Bring to Thermal Wells
This paper describes both design and economic considerations that lead to the selection of vacuum-insulated tubing (VIT) or vacuum-insulated casing (VIC) for the completion of thermal wells.
This year’s papers provide examples of efficiencies that have been brought about in coiled-tubing operations. The papers demonstrate how problem-solving techniques have been applied to improve such aspects as on-site processes, fit-for-purpose equipment, and more-effective treatment placement.
Real-Time, Single-Run CT System Provides Selective Perforating and Activation
A coiled-tubing selective perforating and activation system that transmits critical downhole data and measurements in real time is enabling well interventions that previously could not have been executed.
A Methodology for Multilateral-Well Optimization
Multilateral wells with smart completions controlled by different flow-control technologies offer great operational flexibility, with each lateral able to be operated and optimized independently.
Cement Placement With Tubing Left in Hole During Plug-and-Abandonment Operations
This paper presents full-scale tests that show it is possible to obtain good cement placement when the tubing is left in the hole.
Cointerpretation of Distributed Acoustic and Temperature Sensing for Inflow Profiling
With the availability of more-complex smart-well instrumentation, immediate evaluation of the well response is possible as changes in the reservoir or well occur.
Despite cement’s remarkable properties, the search continues for enhancements in the areas of cost and isolation performance. Efficiencies and enhancements have been explored even to the point of replacing cement with other materials.
Deepwater Hydraulic Well Intervention: A Creative Hybrid Solution
This technical paper describes the planning and execution of a multiservice-vessel (MSV) -based hydraulic-intervention campaign in Chevron’s Tahiti field in the US Gulf of Mexico.
Deepwater-Structure-Installation Challenges Offshore Australia
This paper provides an insight into the challenges encountered and overcome during installation of 20 subsea structures, some close to 1000 t in weight and in water depths of up to 1350 m, for the Gorgon project offshore Western Australia.
The need to offset declining production from mature basins, as well as the ability of international oil companies to access larger reserves with the use of new exploration-and-production technology, will continue to drive deepwater expenditure.
Efficient Optimization Strategies for Developing Intelligent-Well Business Cases
The complete paper evaluates optimization techniques to develop, or support, business cases for intelligent or smart wells.
Investigating the Benefits of Rotating-Liner Cementing and Impact Factors
This paper discusses an expandable-liner-hanger (ELH) system that provides liner rotation during the liner deployment and the cementing operation while providing a hydraulically energized liner-top seal upon setting.
Intelligent Fields Technology
The most-competitive emerging systems blend artificial intelligence to bring better efficiency to the human work that results in good business decisions. As a result, we waste less time and fewer resources finding and manipulating data and focus more on complex engineering judgment.
The featured papers all show improved solutions for constructing multilateral and long-reach wells. They show the dynamics of a continuous striving for improvements. These well types are very important tools in the search to maximize recovery from petroleum fields.
Next-Generation High-Torque Connection for Extended-Reach Wells
This paper demonstrates how the latest generation of connections has been tested and validated to extreme loads before being installed in the wellbore.
Overcoming Challenges and Optimizing Liner Deployment in Long Laterals
A North Sea field development included installation of long 4½-in. completion liners in the horizontal reservoir sections of each well. To minimize overall risk, the operator planned to use managed-pressure drilling (MPD).
Pseudodensity Log Generation by Use of Artificial Neural Networks
This paper will describe how one integrates a comprehensive methodology of data-mining techniques and artificial neural networks (ANNs) in reservoir-petrophysical-properties prediction and regeneration.
Real-Time Monitoring of Piezoresistive Smart Cement To Verify Operations
A field well was designed, built, and used to demonstrate the concept of real-time monitoring of the flow of drilling mud and smart cement and the hardening of the cement in place.
Sustainable Building Blocks for Cost-Effective Deepwater-Field Development
This paper reviews clusters of information that will be termed “building blocks” for deepwater-field-development planning, discussing how they are currently used and exploring more-affordable, but technically robust, alternatives.
Conductor Anchor Node Optimizes Efficiency of Riserless Deepwater Exploration Drilling
The conductor anchor node (CAN) technology was introduced as part of the architecture for Centrica’s Ivory deepwater exploration well in the Norwegian Sea to optimize efficient operations for the well’s riserless section.
Integrated Software Tool Brings Speed, Reliability to Reservoir Modeling on Barents Sea Project
A fast, integrated reservoir modeling tool used by Eni at Norway’s Goliat field generated an ensemble of models that helped confirm the location of previously identified infill drilling targets and identify several new infill locations.
A New Distillation Process for the Upgrading of Acid Gas
In this work, the potential of a new low-temperature distillation process for natural-gas sweetening has been investigated.
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