A systematic investigation of drilling fluid bulk relaxation impact on NMR interpretation for formation evaluation
June 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...
An experimental study to investigate the role of pyrolysis reaction on in-situ hydrogen generation from sandstone oil reservoirs
June 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...
Design and analysis of low-density, high-pressure-resistant epoxy resins for advanced leakage control: Insights from experiments and simulations
June 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...
Characteristics and genesis analysis of middle and lower Ordovician dolomite in the southern margin of the Ordos Basin, China
June 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...
Fast tracking of safe CO2 trapping indices using machine learning for smarter reservoir management
Available online 3 June 2025
Predicting trapping indices is crucial for assessing the viability of carbon dioxide (CO2) storage sites, particularly in mitigating risks associated with cap-rock failure. Accurate prediction of trapping...
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 reservoir stimulation, since...
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,...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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,...
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...
Discussion of the feasibility of spontaneous ignition, oil requirement, and air requirement for air injection in shale and tight reservoirs
February 2025
Because of the nature of low permeability of shale and tight reservoirs, a gas injection method has the advantage of enhancing oil recovery. Among gases, air has its vast and free resources. And one...
Effect of potential determining ions on sulfonated polyacrylamide behavior during smart water-polymer injection into carbonate reservoirs
February 2025
In low salinity polymer flooding (LSPF), an advanced hybrid method for enhanced oil recovery (EOR), less attention has been given to the impacts of potential determining ions on polymer behavior in...
Untreatment reutilization of high-salinity flowback fluid and produced water to prepare fracturing fluid by using associative thickener
February 2025
Reutilizing flowback fluid and produced water to prepare fracturing fluid is still an urgent problem that needs to be solved and is not well solved. In this work, an anti-salt associative thickener...
Low-temperature oxidation characteristics and reaction pathways of crude oil within tight shale during air injection
February 2025
The investigation of low-temperature oxidation (LTO) of crude oil within tight shale holds significant importance due to its implications for subsequent oxidation reactions and enhanced oil recovery...
Evolution law of stress induced by pressure depletion in fractured shale reservoirs: Implications for subsequent refracturing and infill well development
February 2025
Stress changes associated with reservoir depletion have been frequently observed. Stress evolution within and around the drainage areas can affect the completion of infill wells and refracturing considerably....
