TOPICS OF INTEREST
Denbury Files for Bankruptcy With a Plan to Slash Debt
Add Denbury Resources to the list of oil companies filing for bankruptcy protection with a plan that may make for a quick trip through the debt-reduction process.
What the industry needs at this stage is a willingness to work together, share best practices, conduct innovative research, and focus on disruptive technologies that lower cost of capture and make our operations more sustainable.
Integrated Work Flow Optimizes Eagle Ford Field Development
The complete paper presents a large-scale work flow designed to take a vast amount of data into consideration. The work flow can be scaled for projects of any size, depending on the data available.
Add Denbury to the List of Possible Bankruptcies
Denbury Resources needs enhanced debt reduction. The company that does enhanced oil recovery using carbon dioxide it produces and transports has skipped a payment to creditors while it seeks a deal that would reduce its debts.
Overcoming Challenges in Chemical EOR During Polymer Breakthrough
The complete paper discusses the importance of adequate preparation and the approaches used to overcome challenges of EOR operations, including handling back-produced polymer.
Four-Injector Polymer Pilot Expands to 80 New Injectors Using Modular Concept
The complete paper presents steps to accelerate enhanced oil recovery (EOR) in a Grimbeek field from a four-injector pilot to 80 new injectors in a rapid deployment.
Integrated Optimization Process Advances Steamflood Performance
Duri Field in Indonesia is the largest active steamflood project in the world. The field produces 73,000 BOPD, and 10,000 optimization jobs are executed annually to support base production.
Autonomous Valve Controls Excess Water, Gas Production To Increase Oil Recovery
Autonomous Inflow Control Valve technology demonstrates significant benefits within first year.
Several well-stimulation products and techniques have been seen to benefit well productivity from recent field trials and implementations in carbonate reservoirs, including simpler acid fluid systems, integrated work flows, and coiled-tubing bottomhole assemblies.
In difficult times, there is naturally a focus on maximizing the operational efficiency of existing assets, including enhanced-oil-recovery (EOR) operations and looking for capital-efficient ways to increase the resource base in existing assets.
Omani- and Shell-Backed Solar EOR Firm Runs Out of Steam
GlassPoint Solar was founded in 2008 to replace the use of natural gas for steamflooding heavy-oil reservoirs. But amid low energy prices, its chief investor has decided to pull the plug for good.
Polymer-Flood Field Pilot Enhances Recovery of Heavy Oils on Alaska’s North Slope
Although polymer flooding has become a promising enhanced oil recovery (EOR) technique, no field tests have been performed to date in Alaska’s underdeveloped heavy-oil reservoirs.
SPE Talks To: Mathias Carlsen
In this episode, we discuss the state of shale EOR in the US and what hydrocarbon producers need to know about seperator oil shrinkage.
Study Investigates Smart Waterflooding in Sandstone Reservoirs
In this paper, the authors consider the effect of water chemistry on water/rock interactions during seawater and smart waterflooding of reservoir sandstone cores containing heavy oil.
Heavy-Oil Steamflood Validates Machine-Learning-Assisted Model
This paper updates a previous case study and presents the results of actual implementation of an optimized steam-injection plan based on the model framework.
Capacitance-Resistance Model Used for Integrated Detection of Water Production
The objective of this study is to show how the capacitance-resistance model (CRM) was used on this field and how it validated the use of other independent methods. This paper demonstrates that integration of different sources of data in reservoir management is critical.
The bulk of the literature on enhanced oil recovery from the past year has been devoted to an improved understanding of trends started more than a decade ago with physical and numerical modeling.
Huff ‘n’ Puff EOR Proves Effective in Gas-Condensate Reservoirs
The objective of the study described in this paper was to investigate the feasibility of huff ‘n’ puff enhanced oil recovery (EOR) in a gas-condensate reservoir.
Oxy Starts Up Solar Facility To Power Permian EOR
The 16-MW solar facility in Ector County, Texas, near Odessa, powers the Goldsmith field through deployment of 174,000 photovoltaic panels.
Industry Struggles With Enhanced Recovery for Unconventional Reservoirs
This paper reviews the IOR/EOR technologies currently being applied to unconventional oil reservoirs.
Improving Temperature-Logging Accuracy in Steamfloods
The objective of this study was to look at factors that can affect a temperature log and steps that can be taken to improve temperature-measurement accuracy.
New OGA Wells Strategy Focuses on Improving Economics of UKCS Oil and Gas
The strategy supports the Maximise Economic Recovery from UK Oil & Gas Strategy and Vision 2035, whose goal is to achieve £140 billion additional gross revenue from UKCS production by that time.
US Energy Department R&D Funding To Include Conventional, Shale EOR
The projects are designed to reduce technical risks in enhanced oil recovery and expand application of EOR methods in conventional and unconventional reservoirs.
In recent years, some effort has been made to use EOR techniques, particularly CO2 injection, to extract additional oil and gas from unconventional resources. This has the potential to change the dynamics (again) of oil production from these tight and difficult reservoirs.
Interwell EOR Pilot Proves Advantages of Polymer Flooding
This paper discusses an enhanced-oil-recovery (EOR) polymer-flood pilot at the Captain field in the UK North Sea during 2011–2013.
One of my best moments is to have made the technical case for polymer flooding and to see the fruits of this several decades later. As is so often the case in our industry, my contribution stands alongside those of many others in the intervening years who have all made the EOR journey possible.
The fourth industrial revolution is taking the oil and gas business by storm. Many companies have increased resources for big-data analytics and machine learning. Though no one sees physical oilfield services as in decline, development in these areas may take a back seat to artificial intelligence.
Largest WAG Pilot in Giant Al-Shaheen Field Reveals Optimization Methods
This paper discusses the operation of the largest offshore high-pressure water-alternating-gas (WAG) injection pilot using hydrocarbon (HC) gas, with a gas-injection capacity of approximately 100 MMscf/D, in the giant Al-Shaheen field offshore Qatar.
Digital Transformation Increases Value in an Omani Thermal EOR Asset
A thermal asset in Oman is characterized by a large-scale steam-drive/cyclic-steam-soak development project, underpinned by extensive data gathering.
Shale EOR Delivers, So Why Won’t the Sector Go Big?
There is every reason to believe that enhanced oil recovery through huff-and-puff injections in US tight-oil plays could be a technical success across large numbers of wells. However, widespread economic success remains uncertain.
New Steamflooding Techniques Pay Off in Mukhaizna Field
This paper covers the staged field-development methodology, including analysis and evaluation of various development concepts, that enabled the company to optimize both completion design and artificial-lift selection, reducing downtime and lowering operating costs by nearly 50%.
Phased Pilot Approach Reduces Uncertainty in Carbonate Steamflood Development
The First Eocene is a multibillion-barrel heavy-oil carbonate reservoir in the Wafra field, located in the Partitioned Zone between Saudi Arabia and Kuwait. After more than 60 years of primary production, expected recovery is low and provides a good target for enhanced-oil-recovery processes.
Viability of Gas-Injection EOR in Eagle Ford Shale Reservoirs
This paper studies the technical and economic viability of this EOR technique in Eagle Ford shale reservoirs using natural gas injection, generally after some period of primary depletion, typically through long, hydraulically fractured horizontal-reach wells.
Best Practices for Waterflooding Optimization Improve Oil Recovery in Mature Fields
This paper presents technologies and best practices to improve oil recovery in mature fields through waterflooding optimization. These technologies have proved practical and cost-effective.
As operators and asset owners worked continually to increase efficiency in oil production, they all realized that part of efficiency improvement is increasing recovery factors. Everybody now is extremely focused on recovering more from the reservoirs they have.
Experimental Program Investigates Miscible CO2 WAG Injection in Carbonate Reservoirs
This paper provides a robust methodology for miscible CO2 WAG experimental-data acquisition and history matching.
Waterflooding With Active Injection-Control Devices Improves Oil Recovery
This paper presents the implementation of an approach for improving oil recovery by water-injection optimization using injection-control devices (ICDs) in unconventional reservoirs.
Water-Injection Techniques Increase Recovery in Conventional Gas Reservoirs
This paper evaluates the incremental benefit of water injection in a conventional gas reservoir when compared with gas compression.
Huff ’n’ Puff Gas-Injection Pilot Improves Oil Recovery in the Eagle Ford
The Eagle Ford formation has produced approximately 2 billion bbl of oil during the last 7 years, yet its potential may be even greater. Using improved oil-recovery (IOR) methods could result in billions of additional barrels of production.
Seismic Stimulation: An Eco-Friendly, Effective EOR Alternative
Seismic stimulation, achievable with the implementation of a single tool, requires significantly lower investments than gas, thermal, and chemical injection methods, with minimal environmental impact.
In the Shale Business, It’s Time for Another Revolution
The report card for unconventional oil and gas producers from a leading industry analyst is A+ for growth and F- for paying back investors.
CO2-Foam Field Pilot Test in a Sandstone Reservoir
This paper presents an analysis of a CO2-foam-injection pilot in the Salt Creek Field, Natrona County, Wyoming.
Integrated CO2-Foam Pilot in a Heterogeneous Carbonate Field
A carbon-dioxide (CO2) -foam enhanced-oil-recovery (EOR) pilot research program has been initiated to advance the technology of CO2 foam for mobility control in a heterogeneous carbonate reservoir.
Foaming Behavior of CO2-Soluble, Viscoelastic Surfactant
Aqueous foam has been demonstrated to have promise in conformance-control applications. This paper explores the foaming behavior of a CO2-soluble, cationic, amine-based surfactant.
In my previous features, I discussed the challenges facing carbon dioxide (CO2), both technical and economic. By far the biggest use of CO2 is in enhanced oil recovery (EOR). In this feature, the focus is on overcoming the biggest challenges facing CO2 EOR—gravity override and mobility.
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.
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.
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.
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.
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.
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.
California Becomes a Proving Ground for Solar EOR Technology
If proven economic, solar EOR technology could represent an environmentally and energy friendly solution for California’s heavy oil producers.
Stressed About Production? Consider a Chemical Cocktail
Early field tests suggest chemical treatments may be able to significantly increase production from unconventional formations.
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.
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.
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.
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.
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.
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?
Two Ways To Stretch the Lives of Risers and Mooring Lines
The future of many offshore developments hangs on extending the lives of mooring lines and risers.
It's Hard To Make Money in Deepwater, Even With Billions of Barrels To Produce
Low oil prices have made the goal of this Petrobras project and its four partners to lower the break-even price of operating to USD 35/bbl.
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.
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.
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.
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.
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.
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.
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.
Management: Chemical EOR—A Multidisciplinary Effort To Maximize Value
The implementation of chemical EOR has proven successful but the method faces significant technical and financial challenges.
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.
Renewable Energy Tech Is Now Priced To Reduce Upstream Spending
Renewable energy is often framed as being at odds with the oil and gas industry, but new price developments in the wind and solar sectors may be changing this paradigm, according to one US energy expert.
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.
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.
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.
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.
ATCE: Fast Start for First Saudi CO2 EOR Project
Saudi Aramco saw a jump in production for a type of EOR that often takes years to see full benefits.
Use of Partitioning Tracers To Estimate Oil-Saturation Distribution
Partitioning interwell tracer tests (PITTs) have been used to estimate remaining oil saturations (ROSs) during waterflooding.
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04 August 2020