Characteristics and Genesis Analysis of Middle and Lower Ordovician Dolomite in the Southern Margin of the Ordos Basin, China
Available online 19 May 2025
The Middle-Lower Ordovician formations in the southern margin of the Ordos Basin host multiple sets of dolomites, which readily form high-quality reservoirs with promising exploration prospects. Understanding...
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Design and Analysis of Low-Density, High-Pressure-Resistant Epoxy Resins for Advanced Leakage Control: Insights from Experiments and Simulations
Available online 16 May 2025
Leakage control in deep oil and gas wells is challenging, often leading to increased costs. In this study, a low-density, high-pressure resistant and thermally stable epoxy resin (BEPD) was synthesized...
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Fast and accurate CO2 solubility predictions: a comparative study of machine learning models and the Duan and Sun models
Available online 14 May 2025
Accurately predicting CO2 solubility in brines is crucial for industrial processes such as Carbon Capture, Utilization, and Storage (CCUS), Enhanced Oil Recovery (EOR), and carbonate acidizing, since...
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An Experimental Study to Investigate the Role of Pyrolysis Reaction on In-Situ Hydrogen Generation from Sandstone Oil Reservoirs
Available online 13 May 2025
In-situ combustion gasification (ISCG) is a technology in the field pilot stage used for hydrogen generation from oil reservoirs. ISCG is implemented by injecting an oxidant (pure oxygen, air, …) into...
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A systematic investigation of drilling fluid bulk relaxation impact on NMR interpretation for formation evaluation
Available online 9 May 2025
During drilling, mud filtrate invasion alters near-wellbore properties which possibly impacts well logging measurements causing inaccuracies in formation evaluation. Given the shallow detection depth...
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Optimization design of natural gas differential pressure power generation under flow fluctuation
April 2025
“Double carbon” is a two-stage carbon emission reduction goal proposed by China, and differential pressure power generation, as a natural gas (NG) residual pressure energy power generation technology,...
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Micro- and macroscopic experiments on self-adaptive mobility control and displacement efficiency of carbon-based composite nanofluid for enhanced oil recovery
April 2025
Reservoir heterogeneity, unfavorable water–oil mobility ratio, and high oil-water interface energy are primary constraints impeding macroscopic sweep and microscopic oil displacement efficiencies of...
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Study on rapid construction of microemulsion system based on EACN of crude oil measured by the direct method
April 2025
The purpose of this study is to delineate the applicability of the direct method for determining the equivalent alkane carbon number (EACN), a crucial parameter in the hydrophilic-lipophilic deviation...
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A review of the critical conditions required for effective hole cleaning while horizontal drilling
April 2025
Horizontal drilling has become increasingly prevalent in the oil and gas industry due to its potential for enhanced reservoir recovery and reduced environmental impact. However, effective hole cleaning...
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Optimizing heavy crude oil conversion: Catalytic thermolysis with TiO2@α-Fe2O3 nanocomposite and surfactant dynamics
April 2025
Currently, as the production of light crude oil is reaching its peak, the focus of the petroleum industry is shifting towards significant amount of heavy oil to meet the increasing need for energy and...
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Development directions of formation damage evaluation and fracturing fluids in tight and shale oil reservoirs
April 2025
Tight and shale oil reservoirs are characterized by small pore throats, low porosity, and low permeability, which must be stimulated to increase production. Fluid flow experiences a multi-scale transport...
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Predicting water-based drilling fluid filtrate volume in close to real time from routine fluid property measurements
April 2025
Drilling operations depend on precisely controlling drilling fluid filtration volume (FV), which affects formation integrity, costs, and borehole stability. Maintaining optimal FV is essential to prevent...
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Rapid screening and optimization of CO2 enhanced oil recovery operations in unconventional reservoirs: A case study
April 2025
CO2 injection not only effectively enhances oil recovery (EOR) but also facilitates CO2 utilization and storage. Rapid screening and optimization of CO2-EOR operations is urgently needed for unconventional...
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An environmentally friendly and low-cost alginate-based gel for water management in petroleum reservoirs: Characterization and efficacy investigation
April 2025
Water production in petroleum reservoirs poses considerable challenges, such as lower production efficiency, higher operational costs, and severe environmental risks. This study investigates the effectiveness...
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Exploring hydrocarbon potential with 3D modeling techniques: Lower Cretaceous formations in Abu Sennan field, north Western Desert
April 2025
The northern portion of the Egyptian Western Desert is a very promising oil-producing province. The Abu Roash and Bahariya formations in Abu Sennan Field have a diverse lithological composition, leading...
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Architecture and differential hydrocarbon enrichment of basins under joint constraints of basement nature and regional stresses: A case study of the passive continental margin basins along the East Coast of Canada
Available online 24 April 2025
The East Coast of Canada presents multiple passive continental margin basins (PCMBs) characterized by significant architectural differences and limited oil and gas discoveries, establishing these basins...
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Numerical simulation of seismicity potential resulting from the injection of CO2 into depleted reservoir in Wilbarger County field, Texas
Available online 17 April 2025
Fluid injection in fractured rocks presents significant challenges requiring the integration of various elements to account for reservoir property heterogeneities. To understand magnitude of potential...
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Experimental evaluation method of density suitability between bridging lost circulation materials and drilling fluid
Available online 15 April 2025
Ultra-deep geological conditions are complex, often leading to leakage issues. As the depth increases during ultra-deep bridging lost-circulation operations, the varying settling velocities of different...
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Advancements in green materials for chemical enhanced oil recovery: A review
Available online 25 March 2025
Chemical enhanced oil recovery (CEOR) is well known for its success in recovering the trapped oil in reservoirs after waterflooding operations. In CEOR, synthetic chemicals are utilized to increase...
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Impact of Hydroxypropyl Guar Polymer on rheology and filtration properties of water-based drilling fluids
Available online 19 March 2025
Water-based drilling muds (WBM) are a very crucial component of the oil and gas industry; however, they often face challenges with inadequate rheological performance and excessive fluid loss. This paper...
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Criterion to foresee the affinity of various coatings/substrates to asphaltene deposition in oil wells
Available online 17 March 2025
Asphaltene deposition in oil wells has long been considered a severe problem. It can be treated using various chemical, mechanical, and thermal methods. However, these methods are often associated with...
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Experimental and modelling studies on static sag of solid weighting powders in Polysulfonate workover fluids at high temperature and high pressure
February 2025
The solid weighting material in a high-density workover fluid is prone to static sag. Existing experimental methods cannot predict the parameters of the settling stability of workover fluids at high...
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Synergistic enhancement of oil recovery: Integrating anionic-nonionic surfactant mixtures, SiO2 nanoparticles, and polymer solutions for optimized crude oil extraction
February 2025
Enhanced oil recovery (EOR) methods are essential for optimizing oil extraction from modern reservoirs. This research delved into the synergistic impact of combining anionic and nonionic surfactant...
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Dynamical counterfactual inference under time-series model for waterflooding oilfield
February 2025
The performances of numerical simulation and machine learning in production forecasting are severely dependent on precise geological modeling and high-quality history matching. To address these challenges,...
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Intelligent optimization of fracturing stage and cluster parameters for tight oil reservoir
February 2025
The Mahu oilfield in the Junggar Basin of Xinjiang has the characteristics of poor reservoir quality, large horizontal stress difference, and strong heterogeneity, which poses challenges in oil production...
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