Key parameters and evaluation methods for large-scale production of lacustrine shale oil
August 2025
Based on the analysis of typical lacustrine shale oil zones in China and their geological characteristics, this study elucidates the fundamental differences between the enrichment patterns of shale...
Fracture propagation and fatigue damage mechanisms in pulse hydraulic fracturing of deep coal
August 2025
By integrating laboratory physical modeling experiments with machine learning-based analysis of dominant factors, this study explored the feasibility of pulse hydraulic fracturing (PHF) in deep coal...
Natural gas types and coal-rock gas classification in the whole petroleum system of coal measures
August 2025
There are various types of natural gas resources in coal measures, making them major targets for natural gas exploration and development in China. In view of the particularity of the whole petroleum...
Tectonic deformation and its petroleum geological significance of continental margin necking zone in deepwater area of Pearl River Mouth Basin, South China Sea
August 2025
Based on a set of high-resolution 3D seismic data from the northern continental margin of the South China Sea, the lithospheric structure, thinning mechanisms and related syn-rift tectonic deformation...
Scope, nature, and exploration significance of Ordos Basin during geological historical periods, NW China
August 2025
Based on the analysis of surface geological survey, exploratory well, gravity-magnetic-electric and seismic data, and through mapping the sedimentary basin and its peripheral orogenic belts together,...
Impact rock-breaking mechanisms and energy transfer laws of conical tooth bits in hot dry rocks
August 2025
Based on the finite-discrete element method, a three-dimensional numerical model for axial impact rock breaking was established and validated. A computational method for energy conversion during impact...
A simulation study of biogeochemical interactions in cyclic underground bio-methanation of carbon dioxide and hydrogen
August 2025
A coupled PHREEQC-MATLAB simulation approach is proposed to investigate the dynamic changes in rock porosity, gas storage capacity, formation water salinity, and reservoir temperature driven by biogeochemical...
Numerical simulation of fracture propagation in deflagration-hydraulic composite fracturing of unconventional reservoirs
August 2025
Based on continuum-discontinuum element method, the numerical simulation of fracture propagation during deflagration-hydraulic composite fracturing was constructed by considering deflagration stress...
Orderliness of hydrocarbon distribution and main controlling factors of hydrocarbon accumulation in the Persian Gulf Basin
August 2025
Based on the achievements and research advances in oil and gas exploration in the Persian Gulf Basin, this study analyzes the orderliness of oil and gas distribution and main controlling factors of...
Controlling effects of the Mid-Permian multistage slope-break zones on paleogeomorphology and large-scale shoals in the Sichuan Basin, SW China
August 2025
This study reconstructed the paleo-uplift and depression pattern within the sequence stratigraphic framework of the Mid-Permian Maokou Formation, Sichuan Basin, investigated its tectono-sedimentary...
Progress in CO2 flooding and storage techniques for lacustrine oil reservoirs and development directions of their large-scale application in China
August 2025
Based on the technological demands for significantly enhancing oil recovery and long-term CO2 sequestration in the lacustrine oil reservoirs of China, this study systematically reviews the progress...
Characteristics, genetic mechanism and hydrocarbon accumulation of inverted structures in the Doseo Basin, Chad
August 2025
Based on two-dimensional/three-dimensional seismic and logging data, combined with the analysis of low-temperature thermochronology data, the unconformity surface characteristics and the patterns and...
Micromechanical damage and proppant embedment patterns of fracture surfaces in lacustrine shale CO2 pre-pad energized fracturing
August 2025
To elucidate the mechanism by which supercritical CO2 (SCCO2)-water-shale interactions during CO2 energized fracturing influence proppant embedment in lacustrine shale, shale samples from the Bohai...
Sequence stratigraphy analysis and lithofacies paleogeography reconstruction of isolated platform in a rift lake basin: Implications for deepwater hydrocarbon exploration in the subsalt of Santos Basin, Brazil
August 2025
By integrating core observations, logging data and seismic interpretation, this study takes the massive Cretaceous carbonates in the M block of the Santos Basin, Brazil, as an example to establish the...
A Transformer-based approach for anomaly detection in intelligent well completions
August 2025
This study introduces a novel methodology and makes case studies for anomaly detection in multivariate oil production time-series data, utilizing a supervised Transformer algorithm to identify spurious...
Fracture propagation of deflagration fracturing in deep shale multi-branch wells
August 2025
Based on the finite element-discrete element numerical method, a numerical model of fracture propagation in deflagration fracturing was established by considering the impact of stress wave, quasi-static...
Differential accumulation characteristics and production of coalbed methane/coal-rock gas: A case study of the No. 8 coal seam of the Carboniferous Benxi Formation in the Daji block, Ordos Basin, NW China
August 2025
Based on the coalbed methane (CBM)/coal-rock gas (CRG) geological, geophysical, and experimental testing data from the Daji block in the Ordos Basin, the coal-forming and hydrocarbon generation & accumulation...
Accumulation mechanism and enrichment model of deep tight sandstone gas in second member of Upper Triassic Xujiahe Formation, Xinchang structural belt, Sichuan Basin, SW China
August 2025
Taking the second member of the Xujiahe Formation of the Upper Triassic in the Xinchang structural belt as an example, based on data such as logging, production, seismic interpretation and test, a systematic...
Isotopic fractionation and identification of abiogenic alkane gases in China
August 2025
Based on geochemical data from natural gas samples across spring water systems and sedimentary basins, including Songliao, Bohai Bay, Sanshui, Sichuan, Ordos, Tarim and Ying-Qiong, this paper systematically...
An intelligent integrated production optimization technique for waterflooding reservoirs
June 2025
The production optimization in the closed-loop reservoir management is generally empirical, and challenged by the issues such as low precision, low efficiency, and difficulty in solving constrained...
Geological characteristics and hydrocarbon accumulation model of the whole petroleum system in Paleogene of Jiyang Depression, Bohai Bay Basin, China
June 2025
Based on a large amount of basic research and experimental analysis data from Shengli Oilfield, Bohai Bay Basin, guided by the theory of whole petroleum system, the distribution of sedimentary systems,...
Effects of hydration on the mechanical properties of deep shale under true triaxial stress: A case study of Fuling shale gas in Sichuan Basin, SW China
June 2025
This study takes shale samples from the Jiaoshiba block in the Fuling shale gas field of the Sichuan Basin, and uses the true triaxial testing system to conduct a series of mechanical experiments under...
Impact of clay coating on sandstone reservoir quality: A multiphase-field investigation by numerical simulation
June 2025
The presence of clay coatings on the surfaces of quartz grains can play a pivotal role in determining the porosity and permeability of sandstone reservoirs, thus directly impacting their reservoir quality....
Intelligent optimization method of fracturing parameters for shale oil reservoirs in Jimsar Sag, Junggar Basin, NW China
June 2025
For shale oil reservoirs in the Jimsar Sag of Junggar Basin, the fracturing treatments are challenged by poor prediction accuracy and difficulty in parameter optimization. This paper presents a fracturing...
Artificial intelligence large model for logging curve reconstruction
June 2025
To improve the accuracy and generalization of well logging curve reconstruction, this paper proposes an artificial intelligence large language model “Gaia” and conducts model evaluation experiments....
