Xiao, Yong (China Zhenhua Oil Co., Ltd) | Wang, Hehua (China Zhenhua Oil Co., Ltd) | Guo, Jianchun (State Key Laboratory on Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University) | Lu, Lize (China Zhenhua Oil Co., Ltd) | Cheng, Yi (Chengdu Northern Petroleum Exploration and Development Technology Co. Ltd.) | Chen, Mengting (Borehole Operation Branch Office of Sinopec Southwest Petroleum Engineering Co., Ltd.) | Fan, Fengying (Chengdu Northern Petroleum Exploration and Development Technology Co. Ltd.) | Xue, Heng (China Zhenhua Oil Co., Ltd)
The low permeability reservoir of Ahdeb field discovered in the 80's, has more than 250 active wells with low initial production and rapid decline compared to other reservoirs. Matrix acidizing is the main stimulation method to recover and enhance production performance in Ahdeb oilfield, but short-distance deblocking acidizing can't communicate with the deep reservoir, and it is impossible to expand the effective seepage radius. Therefore, High reservoir heterogeneity, low permeability, poor pore pressure necessitates the move from conventional matrix stimulation to acid fracturing technology targeting better fracture conductivity and deep penetration for effective productivity and recovery enhancement.
The acid fracturing feasibility research shows that the interlayer characteristics, lithologic barrier, stress barrier and oil-water relationship of the low permeability reservoirs are favorable for fracture initiation, expansion and geometry control. Acid fracturing is one of the best ways to stimulate the potential production in low-permeability reservoirs of the Ahdeb oilfield. The acid fracturing optimization includes fracture conductivity, fluid system and fracturing parameters. Pad acid fracturing and gel acid with multi-stage alternating and closed acid fracturing are the suitable technologies for low permeability reservoir stimulation.
An experiment well has been simulated and designed, and the expected production increase is 1.5 times. Base on this paper's research, a wide-scale development strategy will be planned, and many wells will be stimulated for increase the production performance.
Ahead of the release of the Trump administration's changes to Obama-era rules governing offshore oil platforms, Michael Bromwich said he is worried. "I don't think they are in the public's interest," he said. The Bureau of Safety and Environmental Enforcement announced updated Oil and Gas Production Safety Systems regulations. The revisions reduce unnecessary regulatory burdens while ensuring that operations remain safe and environmentally responsible. The US Bureau of Safety and Environmental Enforcement’s SafeOCS program has released its 2017 annual report on Blowout Prevention System Safety, noting 18 of 25 operators associated with rig operations in the Gulf of Mexico reported 1,129 equipment component failure events.
Operators are increasingly using existing offshore infrastructure for asset life extension, and developing new marginal stranded fields rather than develop new large greenfields. Subsea processing is an enabling technology in this goal. A cybersecurity director outlines the steps needed to adopt a risk-based cybersecurity program. He cautions that in many cases, process control systems’ confidentiality is mistakenly viewed as a lower priority than IT systems’. AUVs aren’t limited to inspections and pipeline surveys.
Steady-state modeling of an asset requires the work of multiple engineering teams, which often leads to suboptimal facility design. An integrated model using information consistently across the entire asset may alleviate the pain resulting from conventional methods. Researchers from Chevron are looking into a new approach to understand the drivers of polymer hydration. How might this affect the design of mixing systems in the field, and could it affect offshore EOR applications? The contract covers the installation of umbilicals, flying leads, and manifolds for the project, which aims to expand and upgrade subsea facilities for the gas field located offshore western Australia.
The French major is racking up barrels of deepwater production as part of its large-scale West African push. Oil prices have fallen since early October in lockstep with the plunge in 2014. But this time oil companies appear better able to deal with a tough situation. Chevron, ConocoPhillips, Equinor, Shell, and Total are among nine firms looking to explore the Pearl River Mouth Basin. Vaca Muerta production is on the upswing.
Is the Cloud Mature Enough for High-Performance Computing? Data volumes are growing at an exponential rate. How can high-performance computing solutions help operators manage these volumes? Will faster, stronger processors and cloud computing solutions be the answer? This paper discusses a project with the objective of leveraging prestack and poststack seismic data in order to reconstruct 3D images of thin, discontinuous, oil-filled packstone pay facies of the Upper and Lower Wolfcamp formation.
Visuray is using its unique X-ray technology to improve downhole imaging. A company is selling a new well testing tool designed to be a cheaper, simpler way to do fiber optic sensing, and then it fades away. BP has seen enormous payoff from a program to intervene in underperforming subsea wells in the Gulf of Mexico. 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. Development of a new polymer composite that degrades via hydrolysis in hot water or brine holds potential for use in structural applications for intervention-less downhole tools.
Petrobras and Shell have brought online the Lula field’s seventh FPSO as the firms continue to ramp up production from the pre-salt Santos Basin. The French major is racking up barrels of deepwater production as part of its large-scale West African push. This paper describes how a technique known as applied-surface-backpressure managed-pressure drilling (ASBP-MPD) can alleviate the limitations of conventional deepwater well control. Majors BP and Chevron have overcome development challenges and delays to launch their respective Clair Ridge and Big Foot projects. The unit is flowing oil and gas from the Lula Extremo Sul area, 290 km off Rio de Janeiro state in 2150 m of water.
Researchers at two California universities are studying the fiery flares that pock-mark drilling sites in the Eagle Ford Shale of south Texas. Among the most consequential provisions is the permanent reauthorization of the Land and Water Conservation Fund, a federal program established in the 1960s that uses fees and royalties paid by oil and gas companies drilling in federal waters to pay for onshore conservation programs. Global climate concerns, amplified in the public consciousness by a steady stream of violent weather events such as hurricanes and California wildfires, are generating a new set of realities for the energy industry. A Florida appeals court has approved exploratory oil drilling in the Everglades, prompting worries about Miami’s water supply and risks to the wetland ecosystem. Kentucky lawmakers have introduced House Bill 199 to plug orphaned oil and gas wells and abandoned storage tanks that threaten health, safety, and the environment. A bipartisan group of House lawmakers introduced legislation that would ban oil and natural gas drilling in Alaska’s Arctic National Wildlife Refuge. Chevron plans to set greenhouse gas emissions targets and tie executive compensation and rank-and-file bonuses to the reductions, the oil major said in its latest climate report.
McDermott will provide EPC, hookup, and commissioning of the Cassia C topsides, a jacket, and a bridge to link Cassia C with the existing Cassia B platform. The specification and selection of equipment is the responsibility of the static equipment engineer, based on requirements specified by other disciplines, including process, materials, and plant layout. These guidelines contain cost-effective recommendations for design, materials, and fabrication. The EPC engineering workflow is synopsized as a one-page view. A new paper from ADI Analytics examines the circumstances in which natural gas could become an attractive method for fueling oilfield equipment.