TOPICS OF INTEREST
Subsea 7 Completes Acquisition of Siem Offshore Contractors
Subsea 7 completed the acquisition of Siem Offshore Contractors along with a cable-lay vessel and a support vessel.
Cyberattack Temporarily Takes Down Energy Transfer’s Electronic Data Interchange
A cyberattack on a third-party provider of an electronic data interchange platform temporarily interrupted Energy Transfer Partners’ ability to transfer files with its customers.
Corinth Secures Subsea 7 Contracts for Aker BP Subsea Tiebacks
The steel pipe manufacturer agrees to deliver outer pipes for pipe-in-pipe flowlines for a pair of recently-announced Aker BP projects in the Norwegian Sea.
Executing Offshore Projects More Efficiently
Offshore project execution enhancement ideas are highlighted for debottlenecking, gas-hydrate-induced pipeline vibration, and the design of subsea systems for efficient startup.
Hydrate-Induced Vibration in an Offshore Pipeline
A computational fluid dynamics model is proposed to analyze the effect of hydrate flow in pipelines using multiphase-flow-modeling techniques. The results will identify the cause of pipeline failure, regions of maximum stress in the pipeline, and plastic deformation of the pipeline.
PHMSA Tags Construction Damage as Cause of Keystone Pipeline Spill
Weights used in the original construction of TransCanada’s Keystone Pipeline in South Dakota were identified as a preliminary cause of the failure that resulted in a 210,000-gal spill in November.
SwRI Develops Autonomous Leak Detection System for Chemical Spills
Southwest Research Institute has developed a leak detection system to autonomously monitor pipelines for hazardous chemical spills. R&D Magazine recently recognized the system as one of the 100 most significant innovations of 2017.
Shell Stands Down Emergency Response at Enchilada Platform
Shell reported it has not observed any signs of oil on the water associated with a fire on the Enchilada platform, located in the US Gulf of Mexico.
Caltech Spin-Out Develops Molecules To Improve Pipeline Flow
Fluid Efficiency and Rhapsody Venture will partner to refine and launch a new molecular technology to improve the flow in pipelines.
New Chevron Venture Program Selects Pipeline Inspection Technologies
Sensor systems for pipeline inspections from Ingu and Rheidiant are among the initial selections to receive funding under Chevron’s CTV Catalyst Program.
Design Tools for Arctic Subsea Pipelines
As the design methodologies evolve for arctic pipelines, strudel scour, permafrost thaw settlement, and ice gouging need to be factored in with environmental and geotechnical data, limit states, and trenching and backfilling activities.
Arctic Pipeline Route Selection
To reduce the risks to arctic pipelines from natural or geologic hazards, a more sophisticated approach to routing compared to traditional methods based on only the shortest length of pipe or connectivity to existing infrastructure is needed.
Taking on the Arctic With New Concepts
New approaches to arctic activities include a concept for an offshore ice-resistant LNG export terminal, the design of subsea pipelines, and the optimal routing for the pipelines to mitigate the unique risks in arctic regions such as ice-gouging and permafrost thaw.
OTC: New Ideas Floated for UAVs, Beyond Inspections
AUVs aren’t limited to inspections and pipeline surveys. Deployment of a flotilla of AUVs to work on a project, and the communication among them, may someday lead to a subsea Internet of Things.
Thermal Regime Effect on Gas-Transport Lines in the Persian Gulf
Sea lines transporting gas in the Persian Gulf exhibit different thermal regimes in different regions. This study summarizes hydrate-inhibition practices for these sea lines, and indicates a possibility of using them as indirect thermometers to provide important physical oceanographic data.
Vessel Contractors Reshape for the Rebound
As the offshore market downturn and bankruptcy take their toll among vessel contractors, industry consolidation and bargain vessel acquisitions take shape.
West Virginia Scraps Noise Regulations for Compressor Stations
As compressor stations are added to the natural gas gathering and transmission networks, the potential noise issues are coming under increasing public scrutiny at the same time as regulations are being rolled back.
Use of Preservation Chemicals Following Hydrostatic Testing of Pipelines
This paper considers some of the challenges and learnings associated with the application of chemicals for preservation of coated pipe/flowline for a major liquefied-natural-gas (LNG) project in Australia.
Gas Begins To Flow in Russia’s Third Arctic Pipeline
Gazprom’s third pipeline to course through the Arctic further decreases Russia’s dependence on using Eastern European countries as thoroughfares to export its gas to markets in Western Europe.
Dakota Access Pipeline Up and Running in 2Q?
The CEO of Phillips 66 expects the DAPL to be operational in 2Q 2017.
Solid-Particles Flow Regimes in Air/Water Stratified Flow in a Horizontal Pipeline
The understanding of solid-particle flow regimes in pipelines for any operational conditions is important for identifying the nature of particle interaction and movement. In this paper, a comprehensive analysis of solid-particle flow regimes in stratified flow in a horizontal pipeline is presented.
Decreased Investment in Online Pipelines To Cause Lag in Installation at End of Decade
The downturn and lack of investment for new projects are likely to impact the onshore pipeline industry toward the end of the decade. But the long-term drivers for pipeline construction, notably the increased demand for gas in regions such as Asia, remain stable.
A New Method To Detect Partial Blockage in Gas Pipelines
Natural-gas-infrastructure reliability is critical for the energy sector. When capitalizing on old pipelines to transport natural gas, operators run the risk of partial blockage. In this study, the authors develop a multirate test method to detect partial blockage in a gas pipeline.
Applying Subsea Fluid-Processing Technologies for Deepwater Operations
Subsea processing is an evolving technology in ultradeepwater development and has the potential to unlock a significant amount of hydrocarbon resources. In this paper, the authors have reviewed the application of subsea systems in 12 deepwater fields and discussed the significance of each.
Deepwater Symposium: Sensors, Analytics Help Maintain Pipeline Integrity
At the 2016 Gulf of Mexico Deepwater Technical Symposium in New Orleans, a presentation discussed the application of sensors and analytics in pipeline integrity management systems.
Bakken Pipeline Gets Final Go-Ahead From Feds
The Dakota Access Pipeline, which will connect the Bakken and Three Forks production areas, has received the regulatory go-ahead from the US Army Corps of Engineers.
Experimental Investigation of Three-Phase Low-Liquid-Loading Flow
An experimental study was conducted by use of a 6-in.-inner-diameter facility to analyze three-phase stratified wavy flow in horizontal pipelines.
Finding New Ground in Subsea Integrity Management
Deepwater production has become more reliant on the integrity of subsea, umbilical, riser, and flowline (SURF) systems. A JIP explored cost-effective inspection and maintenance options.
Effectiveness of Bypass-Pigging Solutions in Multiphase-Flow Pipelines With Waxy Crude Oil: Evaluation and Innovative Solution
Bypass pigging has advantages over conventional approaches. Its application to multi-phase flow with high wax content crude is discussed.
Subsea Infrastructure Growth Tempered by Oil Price Collapse
Projects are being delayed or deferred due to low oil prices, which is affecting the market for subsea, umbilicals, risers, and flowlines (SURF).
Feasibility and Evaluation of Surfactants and Gas Lift in Combination as a Severe-Slugging-Suppression Method
Use of surfactants and gas lift in combination to suppress severe slugging were tested. Surfactants were able to suppress severe slugging for most of the cases, and gas lift helped significantly.
An Improved Model for the Prediction of Pipeline Embedment on the Basis of Assessment of Field Data
This paper reviews the current methodology for assessing pipeline embedment against field data, in which underprediction of pipeline embedment could be critical to design integrity.
Espirito Santo: Design and Operational Experience of the Use of Steel Risers on a Turret-Moored FPSO
The floating production, storage, and offloading (FPSO) facility Espirito Santo, located offshore Brazil in the Parque das Conchas (BC-10) field, is the world’s first turret-moored FPSO facility to use steel risers for fluid transfer.
Cross-Industry Collaboration Ramps Up Flow of Ideas
When energy and healthcare collaborate, innovation is born. Pumps and Pipes, an unprecedented cross-industry collaboration between oil and gas exploration and production (E&P), cardiovascular medicine, aerospace, and academia, has grown into an international forum for transferable ideas and technolo
A New Method for Leak Detection in Gas Pipelines
A simple, practical, and reliable method to detect a gas leak under the conditions of unknown inlet or outlet gas rate, or unknown inlet or outlet pressure, is highly desirable. This paper discusses such a method.
Modeling of Macondo Slug Flow Indicates Lower Total Discharge of Oil
The presence of slug flow in the riser of the sunken Deepwater Horizon could make a significant difference in financial penalties for BP in the wake of the Macondo incident, an expert said.
Dynamic Plastic Deformation of Deepwater Steel Catenary Risers Under Extreme Cyclic Compressive Loading
Steel catenary risers (SCRs) on a large-heave-motion vessel are susceptible to compression in the riser touchdown zone (TDZ). In this paper, a finite-element-analysis modeling method is presented to simulate deformation, pipe ovality, and local pipe buckling.
Simplified Dynamic Models for Control of Riser Slugging in Offshore Oil Production
Riser slugging can restrict production and cause problems for downstream equipment. This paper discusses a simplified modeling approach to control of riser slugging.
Fast Production Recovery of a Typhoon-Damaged Oil Field in the South China Sea
After severe damage in a typhoon, the Huizhou oil field in the South China Sea was back on production in 5.5 months. This paper reviews how this feat was accomplished.
Study on Severe Slugging in an S-Shaped Riser: Small-Scale Experiments Compared With Simulations
Severe slugging is characterized by large pressure fluctuations at the base of the riser and is accompanied by fluctuations in fluid delivery from the top of the riser. This instability has negative effects on downstream equipment.
An Evaluation of Risk of Hydrate Formation at the Top of a Pipeline
Water condensation and/or hydrate formation at the top of pipelines are serious design/operation considerations in pipelines. This paper reports the results of tests conducted in a new experimental setup constructed for investigating gas-hydrate risks in varied operational scenarios.
Definition of a Cutoff Natural Frequency for Smallbore Pipework Connections
Vibration-induced fatigue failures of pipework smallbore connections result in elevated safety risks and costly interruptions to normal operations. A common cause is poor design. This article discusses design considerations to avoid these failures.
Defoamer Improves Flow, But Effect Is Temporary
A relatively small concentration of a defoamer can have a significant impact on the dynamics of multiphase flow within a pipe, but the effect is generally temporary.
Implementing a Deepwater-Pipeline-Management System
There are few deepwater-pipeline operators with expertise in pipeline repairs. This paper describes a strategy developed and implemented on deepwater-pipeline intervention, based on a deepwater operational experience built over a decade.
Improved Paraffin-Deposition-Profile Estimation in Hydrocarbon Pipelines and Effective Mitigation Review
This paper illustrates a numerical approach to estimate the deposition profile of precipitated wax crystals and its effect on flow-related parameters in pipelines. Options for avoiding these issues are also explored.
World Demand for Onshore Pipeline Construction to Grow From 2013 to 2017
Pipelines play a vital supporting role in the energy supply chain as one of the most efficient modes of hydrocarbon transportation. Unconventional resource development and LNG have set the stage for growth in onshore pipelines.
HIPPS-Based No-Burst Design of Flowlines and Risers
A methodology is proposed for design of subsea flowlines and risers coupled with a subsea high-integrity pressure protection system (HIPPS) for fields with high shut-in tubing pressure (SITP).
Available Methodologies Concerning the Treatment and Removal of Sand From Pipelines and Associated Case Studies
This paper discusses the available methodologies for remediation of a pipeline affected by sand and presents examples where the discussed methodologies have been applied.
Pipeline Integrity Assessment Using Probabilistic Transformation Method and Corrosion Growth Modeling Through Gamma Distribution
This paper presents a methodology to estimate the probability of failure of every individual corrosion defect and the residual likelihood of failure of an overall corroded pipeline segment after selected repairs, using structural probabilistic analysis.
Design of Gelled Fluid for Debris Removal in Subsea Pipeline
This paper presents the results of tests conducted to design a fast-breaking gelled fluid for a debris-removal operation in a long, large-diameter subsea pipeline in the Asia Pacific region. where traditional pigging was not an option.
Trenching of Pipelines for Protection in Ice Environments
This paper highlights the issues and challenges surrounding pipeline trenching and burial in ice-gouge environments. The current state of practice is discussed along with the technology gaps that need to be addressed.
Waxy-Crude Production Management in a Deepwater Subsea Environment
Systematic experimental and modeling approaches to designing a safe operating strategy for a 5-km deepwater-subsea-flowline case study are presented to address unplanned shutdown and restart events for waxy-crude production.
Best Practices for Flexible Pipe Integrity Evolve
Operators are increasingly recognizing the need for a systematic assessment and management of flexible pipe integrity, but the identification of critical criteria and the means to best achieve valid and efficient inspection and monitoring (I&M) continues to evolve.
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07 May 2018
ITEMS OF NOTE
16 February 2018
18 December 2017
28 November 2017
19 October 2017
19 September 2017