TOPICS OF INTEREST
TIGHT GAS/SHALE GAS/COALBED METHANE
Gas Lift Operations Require Accurate Predictions of Downhole Annulus Pressure
Downhole annulus pressure is required for any gas lift design. This paper presents several methods of determining annulus pressure at depth and helps determine which method is most appropriate for specific conditions.
EIA Adds New Plays to Shale Gas, Tight Oil Reports
The agency updated its methodology and production volume estimates to factor increasing production from new, emerging plays as well as older plays that have rebounded thanks to drilling advancements.
UK Shale Flow Test Positive, But No Regulatory Relief in Sight
UK’s first horizontal shale well has yielded positive results after an initial flow test. But further testing—and fracturing of a second well—will have to come amid a continuation of UK’s stringent regulations on induced seismicity.
China Flexes Shale Muscles as CNPC Ups Gas Output 40%
The country continues to step up its delivery of shale gas, but has a long ways to go to meet the government's target.
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.
How Does Vaca Muerta Stack Up vs. US Shale? Data Tell the Tale
Vaca Muerta production is on the upswing. Will increasing activity propel the Argentine play to the ranks of US shale? Data suggest it is both already there and has a ways to go.
Led by Frac, The Oilfield Services Space Could Get Interesting in 2019
Slumping oil prices may throw a wrench into a positive outlook for the global oilfield services and equipment industry. Even if prices rebound, complications in the US fracturing market—and elsewhere—are expected to persist.
US Oil, Gas Reserves Hit All-Time Highs
Proved oil and gas reserves in the US have spiked to levels not seen before, the EIA reports, and one of the main drivers is the Permian’s Wolfcamp-Bone Spring Shale.
IEA Warns of Global Oil Supply Deficit, Leaning Too Heavily on US Output
US crude oil production is expanding at an unprecedented rate, but much faster growth will be needed in the next few years to meet the world’s demand if global investment in conventional supply doesn’t pick up, an IEA report indicates.
Total, ADNOC To Explore for Unconventional Gas in Abu Dhabi
The French major will become operator of the Ruwais Diyab concession, and ADNOC says additional companies are lining up to partner on the emirate’s other unconventional areas.
Frac Hits To Take Center Stage at SPE Hydraulic Fracturing Conference
The upcoming event will provide the shale sector with a venue to share new learnings and approaches meant to overcome one of its greatest subsurface challenges.
Gas Begins Flowing From UK Shale Well
Small quantities of gas and water are flowing to the surface from the UK’s first horizontal shale well—just days after operator Cuadrilla paused injection work for a second time amid earthquakes.
Gas Production Technology
Does better data lead to better outcomes for one or even for all? High-quality data have become a resource in themselves, to be traded and leveraged for personal gain.
Small Earthquakes Pause Fracturing of UK’s First Horizontal Shale Well
Cuadrilla has encountered its first bumps in the road while fracturing its Preston New Road shale gas well, with two quakes already temporarily halting injection operations.
Company To Fracture First UK Horizontal Shale Wells
Cuadrilla Resources will test the two wells over the next 6 months to determine how much gas it can initially recover from the Bowland Shale.
Section-Based Approach Optimizes Unconventional-Reservoir-Fracture Spacing
In this paper, the authors consider the development plan of shale gas or tight oil with multiple multistage fractured laterals in a large square drainage area that they call a “section” (usually 640 acres in the US).
Soaking Flowback With Surfactant Improves Oil Recovery in Unconventional Reservoirs
This paper evaluates the ability of different groups of surfactants to improve oil recovery in unconventional liquid reservoirs (ULRs) by experimentally simulating the fracture treatment to represent surfactant imbibition in a ULR core fracture during a soaking flowback.
Coupled Capillary-Pressure and Three-Phase Flash Models Simulate Liquid Blockage
This paper presents a new approach for more-accurate modeling of liquid blockage in tight oil and gas reservoirs and investigates the use of solvents for blockage removal.
Three Basins Driving Big Year-Over-Year Increase in US Gas Output
A marked change from a decade ago, Appalachia, the Permian, and the Haynesville now represent almost half of total US gas production, EIA reports.
Now There’s Enough Pressure Pumping and Sand to Go Around
Hydraulic fracturing is now a little bit easier for US shale operators thanks to readily available horsepower and in-basin sand.
BP To Buy US Shale Assets From BHP for $10.5 Billion
BP ends a year of speculation as to who will buy BHP Billiton’s much-coveted US unconventional business, transforming its Lower 48 portfolio in the process.
The Price of Permian Gas Pipeline Limits
Pipeline bottlenecks have created a wide gap in the price of gas at a key pipeline hub in the Permian compared to the US benchmark level.
Equinor Invests in Two Gas-Focused Tech Startups
Venture groups spend their time evaluating hundreds of companies each year to only make a handful of investments. These two cover interesting ends of the upstream spectrum: aerial drones and downhole artificial lift.
Unlocking Egypt’s Unconventional-Resource Potential
The Apollonia tight-gas chalk play is located in the Abu Gharadig Basin in the Western Desert of Egypt. This has long been ignored as a gas play in the overburden, while the Jurassic and Cretaceous oil fields deeper in the basin have been explored and developed.
Coalbed Methane Prospects in Indonesia
This paper reviews the efforts to exploit CBM resources in Indonesia, the challenges these efforts have faced, and possible solutions that can make operations more efficient and profitable.
Coalbed Methane Development in China: Challenges and Opportunities
This paper presents a literature review to determine the engineering challenges and opportunities presented by CBM production in China.
Unconventional-Reservoir Characterization With Azimuthal Seismic Diffraction Imaging
The complete paper proposes an azimuthal plane-wave-destruction (AzPWD) seismic-diffraction-imaging work flow to efficiently emphasize small-scale features associated with subsurface discontinuities such as faults, channel edges, and fracture swarms.
Firms Lay Transformation Blueprints for Post-Downturn E&P World
Two old school operators and a financial change agent embody a new era for the US onshore industry. Their CEOs convened at the NAPE Global Business Conference in Houston to explain why.
UK Shale Horizontal Drilling Under Way, Fracturing to Follow
Overcoming numerous regulatory hurdles, Cuadrilla Resources is pressing ahead with its plans to fracture a well in the UK for the first time since 2011.
Producers’ Commitments Keep Methane Emission Reduction in the Spotlight
With the API and a multi-operator group passing separate programs aimed at reducing methane emissions, the discussions on what defines an acceptable level of regulation continues within the industry.
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.
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.
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.
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.
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.
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.
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.
Look out World, The US Is Again a Gas-Exporting Country
The US is emerging as a gas-exporting nation, and that is going to mean big changes globally.
BP Brings in Prolific Gas Well in Mancos Shale
At an initial production rate of almost 13 MMcf/D, BP’s new well has achieved the highest early-production level in 14 years for a well in the San Juan Basin of Colorado and New Mexico.
Natural Fractures Add Little to Shale Gas Reservoir Productivity
Senior Research Scientist and SPE Distinguished Lecturer Ian Walton uses a semianalytic shale gas production model to show that natural fractures, contrary to the intuitive beliefs of many, do not contribute significantly to production.
Unconventional Resources: Three Alternative Paths To Maximizing Unconventional Resources
As well-developed shale plays and tight formations mature and decline in production, nontraditional strategies for maximizing production and discovering new resources must be considered.
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.
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.
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.
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.
Argentine President Macri Visits With US Oil and Gas Industry, Asks For More Investment
Argentina President Mauricio Macri visited with oil and gas companies in Houston to emphasize that his country’s reforms are making it increasingly attractive for upstream investing.
Canadian Exploration Growing Again As Engineering Challenges Loom Large
SPE conferences in Calgary examine the challenges of finding and producing heavy oil and unconventional hydrocarbons at a time when Canadian producers are feeling exceptional price pressures.
Energy Policy Uncertain in the Wake of Brexit Referendum
With an uncertain future spawning from the Brexit referendum, the British government is seeking to maintain as much consistency in its energy policy as possible.
Saudi Aramco Gearing Up Unconventional Drilling
Saudi Aramco has begun moving toward the production phase of its ambitious plan to develop its enormous hoard of unconventional gas resources.
Adding Digital Brainpower To Evaluate Tight Gas Reservoirs
Understanding petrophysical properties well enough to make drilling decisions, particularly for tight gas can be a challenge. A new computer system aims to help analyze the extensive data involved.
The Role of Induced Unpropped Fractures in Unconventional Oil and Gas Wells
On the basis of production data, diagnostic methods, and field observations, it is becoming increasingly clear that induced unpropped fractures created during the hydraulic-fracturing operation play a critical role in determining the success of fracture treatments.
Model for a Shale-Gas Formation With Salt-Sealed Natural Fractures
This paper offers an alternative explanation for the early boundary-dominated flow related to dissolution of salt-sealed natural fractures in the shale.
Abundant Supplies A Lingering Problem
Mass layoffs and rising bankruptcies haven't put an end to abundant supplies.
Marcellus Wells: Ultimate Production Accurately Predicted From Initial Production
In this work, the authors perform automatic decline analysis on Marcellus Shale gas wells and predict ultimate recovery for each well.
Ultimate Production Accurately Predicted From Initial Production
In this work, the authors perform automatic decline analysis on Marcellus Shale gas wells and predict ultimate recovery for each well.
Chemical Analysis of Flowback Water and Downhole Gas-Shale Samples
In this study, samples of flowback water and downhole shales are analyzed to investigate the mechanisms controlling the chemistry of flowback water.
Formation-Evaluation Log-Off Results for Coalbed-Methane-Field Development
Coalbed methane development can require a large volume of wells, but the costs of logging can be prohibitive, so alternate formation-evaluation solutions are being evaluated. This paper compares state-of-the-art mining logging technology with conventional oil-and-gas approaches.
Upon Further Consideration, US Gas Reserves Look Bigger
The list of the biggest gas plays in the US is being revised as the US Geological Survey creates new estimates based on additional drilling results and available rock samples. New at Number 2 is the Mancos Shale on the Western Slope of the Rockies with 66 Tcf in recoverable reserves.
European Commission Strives Toward Reasonable Shale-Gas Regulation
Following years of deliberation, the European Union (EU) released a recommendation on unconventional hydrocarbons and a related communication in 2014. This paper traces the origins and development of these documents, which provide vital clues for the road ahead in European shale-gas regulation.
New-Frontier Reservoirs I
With the current changes in the industry, are we seeing the demise of unconventional developments? No, clearly not. The unconventional industry is adapting to deliver the energy demands of the future despite the low oil price.
A More-Rigorous Development Framework for Unconventional Reservoirs
This paper describes how seismic reservoir integration, advanced production analysis, and accurate nanoscale and 3D full-field simulations may address profitability issues and help oil companies to be more efficient in developing unconventional portfolios.
Guest Editorial: Creating Value From Flared Natural Gas
Approximately 5% of world annual gas production is being flared or vented. This is equivalent to approximately 110–140 billion m3 (Bcm) of gas, and equates to the combined gas consumption of Central and South America in 2013.
World Must ‘Tighten Valves’ on Methane Emissions
The importance of reducing emissions of methane, a short-lasting but powerful atmospheric greenhouse gas (GHG), received close attention from panelists at an IHS CERAWeek strategic dialogue, Tightening the Valves on Global Methane Emissions.
Pressure Changes While Fracturing Add To Marcellus Well Production
When it comes to hydraulic fracturing, steadiness may not be a virtue. That was the conclusion of a test to see if rapid pump rate variations would lead to greater production than conventionally fractured stages when the pressure was held steady.
Understanding Uncertainty and Risk in Capital Projects
Speakers at the recent SPE Asia Pacific Unconventional Resources Conference and Exhibition addressed the role of uncertainty and risk in sanctioning megaprojects.
Saudi Aramco Moving Forward on Unconventionals
With the world’s fifth-largest estimated shale gas reserves, there is great potential for Saudi Arabia to replicate North America’s unconventional growth.
Enhancing Sand Strength for Fracturing Applications
A strategic objective of Saudi Aramco is exploring and developing deep and unconventional gas reservoirs, many of which are considered extremely tight.
Study Finds Surface Spills a Higher Risk to Groundwater Than Fracturing
Researchers at Yale University who analyzed groundwater wells in the Marcellus Shale area have determined that hydraulic fracturing is highly unlikely to be a direct source of contamination.
Letting It Soak In: Delaying Flowback Delivers Unique Results
On the far end of the flowback spectrum is a completion process called soakback. If the well has to be shut in until takeaway capacity is available, the completion fluids soak into the shale rock. Flowback analysis can help understand what happens in the formation.
Optimizing Spacing of Multistage-Fractured Horizontal Wells in Gas Reservoirs
This paper gives the recommended MSF horizontal-well spacing for several development scenarios in Saudi Arabian gas-reservoir environments.
Halliburton Reveals Refracturing Strategy
Although refracturing is a topic that has gained a lot of interest, many shale producers have been sitting on the sidelines because early results did not justify the spending
Technology, Efficiency, and Midstream Growth Drive Long-Term Future for Marcellus, Utica
While the collapse in oil price is reshaping opinions about the North American shale revolution and the outlook for oil producers, natural gas producers in the United States are in a somewhat different position
Technology-Driven Approach To Develop Shale Gas in Saudi Arabia
Shale-gas resources were explored in Saudi Arabia by adopting a “technology-driven” approach against the US-based approach that might be termed the “factory” or “statistical” approach.
Estimates of tight-reservoir hydrocarbon reserves continue to vary with uncertainty. What is known with certainty, though, is that current recovery rates are low and the upside is substantial.
Success of Rigless Multistage Selective Stimulation in Supergiant Tight Reservoirs
A tight gas carbonate reservoir with no oil rim in a supergiant onshore gas field in Abu Dhabi was targeted for stimulation during a field review to increase field production.
A Practical Simulation Method Capturing Complex Hydraulic-Fracturing Physics
To understand production from shale reservoirs, the role of hydraulically induced fractures, natural fractures, and their interaction in a formation must be captured.
Understanding Unusual Diagnostic-Fracture-Injection-Test Results in Tight Gas Fields
In hydraulic fracturing, the use of diagnostic-fracture-injection tests (DFITs) can provide valuable information.
Shale Industry Needs to Look Within for Solutions That Save
At the recent 2015 Unconventional Resources Technology Conference, a major theme was how companies can improve performance without increasing the size of their budget.
Creating Value With Permanent Downhole Gauges in Tight Gas Appraisal Wells
Downhole instrumentation of the Khazzan tight gas appraisal wells provides a rare opportunity to quantify reservoir pressure and temperature dynamics.
Gas Production Technology
The incredibly tight rocks that are the source of North America’s gas renaissance are off limits in Germany and France. Though Maersk drilled the first multifractured horizontal well in the North Sea in 1987, some European countries are now banning operations that have occurred legally for decades.
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10 April 2019
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