This page pulls together technology-focused articles from various departments within JPT.
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.
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.
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.
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.
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.
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.
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.
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.
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
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.
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 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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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?
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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?
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.
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.
New-Frontier Reservoirs I
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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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
Application of MPD Technology for HP/HT Wells in Vietnam
One common issue among operators in determining whether to install a managed-pressure-drilling (MPD) system for a campaign is the significant upfront cost.
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.
Drill and Learn: A Decision-Making Work Flow To Quantify Value of Learning
This paper presents a comparison of existing work flows and introduces a practically driven approach, referred to as “drill and learn,” using elements and concepts from existing work flows to quantify the value of learning (VOL).
Fiber-Optic Leak-Detection Project
This paper discusses the objectives of the Fiber-Optic Leak-Detection (FOLD) project, carried out in Verneuil-en-Halatte, France.
Field-Scale Assisted History Matching Using a Systematic Ensemble Kalman Smoother
This work presents a systematic and rigorous approach of reservoir decomposition combined with the ensemble Kalman smoother to overcome the complexity and computational burden associated with history matching field-scale reservoirs in the Middle East.
First Expandable Liner-Hanger Installation in UAE in an HP/HT Well
This paper discusses the planning and deployment of an expandable-liner-hanger (ELH) system in an offshore high-pressure/high-temperature (HP/HT) well for the first time in the United Arab Emirates (UAE).
Integrated Approach for Overpressure Prediction in an HP/HT Well Offshore Malaysia
Pore-pressure prediction plays an important role in well planning as exploration targets shift to deeper, overpressured reservoirs.
Interventionless Reservoir-Isolation Valve Removes Need for Intermediate Completion
This paper focuses on the application of radio-frequency-identification technology to enable an operator to eliminate an intervention run (or intermediate liner) for a 10,000-ft reservoir section.
Instead of selecting papers that were dedicated to material selection, I considered works that concentrated upon best practices and recently developed technologies that make operations in these difficult environments more efficient and far safer for crews and for the environment itself.
RFID Technology for Deepwater Drilling and Completions Challenges
Deepwater operators continually face technical and environmental challenges to drilling and completing wells safely and efficiently.
Systems Approach to Product Design for Ultradeepwater Completion Systems
This paper describes how a systems-engineering approach was used to develop completion technology targeted for the ultradeepwater Lower Tertiary Trend.
History Matching and Forecasting
I believe the main development in history matching is the recognition that it can be formulated as a Bayesian inference problem. History matching is no longer a searching process to find the best model. Instead, history matching is a process of mitigating uncertainty in light of new information.
New Steel Plate for Liquefied-Natural-Gas Storage Tank
A new steel plate for LNG storage tanks has been developed by optimizing chemical composition and applying recent thermomechanical-control-process (TMCP) technology.
Natural Gas Processing and Handling
Natural gas had a bullish year in 2016 as the average Henry Hub spot price jumped from USD 2.28/million Btu in January to USD 3.59/million Btu in December, according to the Energy Information Administration. It also positively forecast that the gas price will rise to USD 3.67/million Btu in 2017.
Uncertainty Quantification for History-Matching Problems
This paper presents a novel approach to generate approximate conditional realizations using the distributed Gauss-Newton (DGN) method together with a multiple local Gaussian approximation technique.
Offshore Drilling and Completion
The industry has developed a deep and healthy respect for systems-engineering processes and the associated full considerations during the deployment of new technologies. The result has been a significant improvement in the successful use and broader deployment of these attractive technologies.
Adjustable, Supramolecular Viscosity Modifiers as Displacement Fluids in EOR
We report a novel type of viscosity modifier relying on the supramolecular assemblies that have pH-adjustable viscosities and robust tolerance against high temperatures and salinities, and are resistant to shear-induced degradation.
Dynamic-Positioning Software Allows Improved Maneuverability for Marine Vessels
As the number of tankers on the open sea remains high, a new motion-prediction software aims to increase vessel safety.
OTC 2017 Announces Spotlight On New Technology Award Recipients
Winners of the OTC 2017 Spotlight on New Technology Awards are announced. Winning technologies showcase the latest and most advanced hardware and software that are leading the industry into the future.
3D Close-the-Loop Method Based on Probabilistic Seismic Inversion
The paper discusses an approach for predicting the lateral variation of net to gross (NTG) by use of 3D probabilistic seismic inversion.
A Comparison Between Seawater-Based and Freshwater-Based Fracturing Fluids
This paper examines the chemistry of developing seawater-based fracturing fluids using two types of polymers as gelling agents and compares results to existing fresh-water-based-fracturing-fluid data under different conditions.
An Innovative Approach to Gel Breakers for Hydraulic Fracturing
Recent studies have found that the viscosities of borate gels at actual downhole pressure conditions may be 80% less than those from standard high-pressure/high-temperature rheometer measurement (which uses 400-psi top pressure).
Comparison of Multiphase-Flow Results in Transverse vs. Longitudinal Fracturing
This paper presents the results of a comprehensive multiphase-flow study that investigated the relationship between the principal stresses and lateral direction in hydraulically fractured horizontal wells.
Cost-Effective Production Metering and Allocation in a Mature Offshore Oil Field
This paper describes how the use of production-modeling tools, coupled with field pressure/temperature-data-acquisition systems and programming software, served as a means to improve production allocation and surveillance on a real-time basis in the Greater Angostura Field.
Fracture Modeling Using a Constructed Discrete Fracture Network From Seismic Data
The objective of this study is to validate the concept of using a seismically derived discrete fracture network (DFN) calibrated with borehole measurements, for complex-hydraulic-fracture modeling.
High-Resolution Seismic Stochastic Inversion as a Direct Input for Reservoir Modeling
Three-dimensional reservoir models are best created with a combination of well logs and 3D-seismic data. However, the effective integration of these results is not easy because of limited seismic resolution.
Key Learnings From First 2 Years of a Full-Field CSS Development in Oman
The A East Haradh formation contains a 200-m-thick oil column of highly viscous oil, with viscosity ranging from 200 to 400,000 cp.
Cost optimization in heavy-oil production can be achieved through numerical modeling to suggest general optimal strategies and development plans or by using proper real-time data acquisition … for prompt decisions while operations are ongoing.
Nanoparticle Catalysts Upgrade Heavy Oil for Continuous-Steam-Injection Recovery
This paper presents an investigation into the effect of catalytic nanoparticles on the efficiency of recovery from continuous steam injection.
Production Response in the Denver-Julesburg Basin
The authors used a high-quality digital-log data set to characterize reservoir quality accurately in the Niobrara and Codell Formations in the Denver-Julesberg (DJ) Basin.
Radio-Frequency Heating Combined With Solvent Injection for Heavy-Oil Recovery
The most popular technology for producing heavy oil (HO) and bitumen is reservoir heating, mainly by steam injection.
Real-Time Production Surveillance and Optimization in a Mature Subsea Asset
A real-time production-surveillance and -optimization system has been developed to integrate available surveillance data with the objective of driving routine production optimization.
With newly discovered fields and the extension of existing areas, the challenges related to reservoir heterogeneity, tight rock, layered systems, and field maturity have led to innovative ideas and to testing and application of technologies.
Industry trends in production monitoring and surveillance continue to demonstrate significant input from the academic and research fields, practical applications, and new-technology introduction. Market conditions similar to those of the previous year are driving some of the same discussions.
Advancement of the integration of seismic with other oilfield disciplines has been fueled by two factors. First, advances in seismic technologies naturally led to more-powerful integration. Second, developments in seismic were motivated in direct response to the needs of interpreters and engineers.
Electrokinetic Deposition of Asphaltenes Studied Under Dynamic Conditions
Asphaltenes represent the heaviest fraction of crude oil, which are known to precipitate when the crude is added to aliphatic solvents such as n-pentane or n-heptane and yet remain soluble in light aromatic solvents such as benzene or toluene.
Single-Trip Subsea BOP Test Tool Saves Big Money
A new tool enables variable bore rams and shear rams to be tested in one run, cutting rig time significantly.
Case History: High-Pressure/High-Temperature Underbalanced Drillstem Testing
This paper describes the method developed to achieve underbalanced drillstem testing (DST) in a deepwater field offshore India.
Fieldwide Determination of Directional Permeabilities Through Transient Well Testing
Knowledge of the maximum- and minimum-permeability directions in anisotropic reservoirs helps to optimize injector and producer locations and is important for reservoir management, especially under secondary or enhanced recovery of hydrocarbons.
Formation Damage: A Novel Approach in Evaluating Zonal-Productivity Loss
The paper describes a novel methodology to construct distributed formation damage across openhole wells in carbonate reservoirs and to evaluate the effects of damage on zonal productivity.
Deepwater Tieback-Cementing-Design Challenges and Engineering Approach
This paper focuses on cementing-design challenges and discusses the engineering techniques used to approach them.
Design of a Floating-Liquefied-Natural-Gas System for Severe Metocean Conditions
This paper describes a split-process FLNG design where primary production and gas-treatment functions are provided on a host platform while liquefaction occurs on a separate vessel.
Drilling Technology and Rigs
Sustaining innovation and well performance during economic downcycles is a hot topic right now. However, the severity of this downturn has resulted in an unprecedented purging of existing paradigms. In this context, it is important to reveal and highlight new initiatives and success stories.
How To Develop a Well-Specific Capping-Stack Blowout Contingency Plan
Developing a well-specific subsea-capping contingency plan involves assessing the feasibility of deploying a capping stack from a floating vessel, determining the weight and stability, and performing dynamic-flow simulations of closing the capping stack outlets.
One of the challenges for those involved with understanding an unexpected decline in well performance is identifying the exact causes for the reduced productivity. Consideration of all data available can eventually point toward one factor that could explain productivity decline.
In-Service Hull Inspections for Avoiding Dry Docking Safely
Current methods for external inspection of floating assets on station use divers or remotely operated vehicles (ROVs), but these methods incur high safety, people-on-board (POB), and cost penalties. New methods to eliminate diving are being developed.
Integrated Approach To Managing Formation Damage in Waterflooding
Understanding of formation damage is a key theme in a waterflood project. An integrated multidisciplinary approach is required to determine an optimal design and strategy.
This month's feature on Offshore Facilities is drawn from more than 200 papers presented at SPE events over the past year.
Passive-Fire-Protection Optimization in Offshore Topside Structures
Applying sufficient passive fire protection (PFP) on topside structural-steel members is critical. Simplified and conservative approaches are available to estimate the extent and amount of PFP necessary.
Remote Directional Drilling and Logging in the Arctic
Few locations present as many challenges for drilling as the Arctic. It is one of the most hostile environments in the world, with some of the most remote locations, the toughest logistics challenges, and the largest gaps in infrastructure on the planet.
Novel Solutions for Transient Sandface Temperature in Dry-Gas-Producing Wells
The application of high-precision downhole temperature sensors has resulted in pressure-transient analysis (PTA) being complemented or replaced by temperature-transient analysis (TTA).
Removing Fines-Migration Formation Damage in the Putumayo Basin in Colombia
This paper summarizes a wide variety of sandstone-acid-stimulation case histories, highlighting aspects such as mechanical conditions and operational practices.
Continued enthusiasm in the well-testing segment of the oil industry is apparent. Even though there was a smaller number of presentations among various conferences related to well testing in 2016, there are articles that contribute significantly for the experts and the upcoming generation.
Retrofitting MPD Systems to Deepwater Rigs Aids Drilling, Efficiency, and Process Safety
The unique properties of deepwater formations pose significant challenges to the capabilities of conventional drilling rigs. Using automated drilling equipment, including MPD, efficiency and cost savings can accompany safety.
Conductor Anchor Node Adds Stability, Cuts Tophole Costs in Subsea Wells
When the industry discusses subsea wells, the tophole construction gets scant attention. The Norwegian company NeoDrill believes it can create a more structurally stable foundation, greater efficiency, and reduced cost by using a conductor anchor node.
EOR Performance and Modeling
Current conditions have made most companies decide to optimize performance of their existing assets, and EOR is a key part of that.
Proper Simulation of Chemical-EOR Pilots—A Real Case Study
A critical step in proper design and optimization of any chemical-enhanced-oil-recovery (CEOR) process is appropriate and precise numerical simulations.
Experimental and Numerical Studies of CO2 EOR in Unconventional Reservoirs
This study explores the mechanisms contributing to oil recovery with numerical modeling of experimental work and investigates the effects of various parameters on oil recovery.
A Field Trial in a Carbonate Reservoir Using a Solvent-Based Waterflood Process
Dimethyl-ether (DME) -enhanced waterflood (DEW) is a process in which DME is added to injection water and, upon injection, preferentially partitions into the remaining oil.
Mature Wells and Field Revitalization
I would like to steer readers’ attention to new technology, advanced modeling, and the interesting topic of fracture hits.
Tapping Difficult Oil in a Giant Carbonate Field in Qatar
After 70 years of production, more than 30% of the Arab C reservoir stock-tank original oil in place has been recovered through various mechanisms including natural depletion, waterflooding, gas lift implementation, and horizontal-well development.
New Technology in a Mature East Malaysian Field
This paper describes the first job in southeast Asia in developing horizontal-well placement in a turbidite environment.
Use of Modern Reservoir Characterization in Mature Fields To Unravel Hidden Reserves
This paper discusses the successful, fully integrated, 3D Earth modeling (EM) and dynamic reservoir simulation of the Hollin Formation in the Lago Agrio Field within an operator’s first producer field in Ecuador.
Well Integrity and Well Control
One of the more important aspects of well integrity during drilling operations is early kick detection. Recently, new technologies and re-search have been applied or developed to improve the kick-detection systems and to overcome some of the difficulties.
Mitigating Gas in Riser Rapid Unloading for Deepwater Dual-Gradient Well Control
A study using a dynamic multiphase-flow software simulated a rapid-unloading event and determined the gas fraction in the riser annulus and the effect on riser fluid levels.
Next-Generation Kick Detection During Connections
An influx-detection-at-pumps-stop (IDAPS) software was developed to provide early warning of abnormal flowback conditions during connections.
Methodology and Array Technology for Finding and Describing Leaks in a Well
This paper presents a new technology and methods that can detect leak locations in a well and illustrate the flow profile of the leak.
Decommissioning and Abandonment
Our industry is governed by rules that require cleanup and closure of oil and gas facilities after they cease to produce. Unlike a capital project, decommissioning is not something that you can choose to do or not to do.
Risk-Based Abandonment-Prioritization Strategy for Inactive Subsea Wells
This paper describes how an exploration-and-production company successfully developed and applied a qualitative risk-based abandonment-prioritization strategy for an inventory of inactive subsea wells.
A New Recommended Practice for Fit-for-Purpose Well Abandonment
DNV GL is introducing a new, risk-based recommended practice for performing and qualifying well abandonments titled DNVGL-RP-E103, Risk-Based Abandonment of Offshore Wells.
Concurrent Decommissioning Method Enables Safer, Lower-Cost Process
With regulatory pressure and the cost of decommissioning increasing, many operators are seeking new and better decommissioning methods that could get more work done safely and at a lower cost.
Preventing Emulsions by Mitigating Solids
Approaches to integrated investigative testing and root cause identification are discussed to prevent solid emulsions from stabilizing to impair flowlines and other field infrastructure.
New Method Adds Value to Wolfcamp Porosity, Organic-Matter Measurements
A new technique that analyzes scanning electron microscope (SEM) images of formation samples has been used to measure porosity and total organic carbon (TOC) in the Wolfcamp Shale of the Delaware Basin in west Texas.
Governments, companies, service providers, and many other stakeholders in the industry have realized the oil-price outlook may remain low for longer than expected and the need to plan accordingly.
Integrated Asset Modeling: An Approach to Long-Term Production Planning
With declining trends in production and dwindling reserves for a 35-year-old offshore field, the Samarang Redevelopment Project was initiated with a vision toward implementing integrated operations as an asset-management decision-support tool.