Evolution characteristics and exploration targets of Permian clastic rock reservoirs in Bohai Bay Basin, East China
October 2023
Based on core observation, thin section examination, fluid inclusions analysis, carbon and oxygen isotopic composition analysis, and other approaches, the structural and burial evolution histories were...
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Gulong shale oil enrichment mechanism and orderly distribution of conventional– unconventional oils in the Cretaceous Qingshankou Formation, Songliao Basin, NE China
October 2023
Through the study of organic matter enrichment, hydrocarbon generation and accumulation process of black shale of the Cretaceous Qingshankou Formation in the Songliao Basin, the enrichment mechanism...
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Dynamic modelling and engineering simulation of fluid mechanics in water injectors
October 2023
To study the fluid dynamic response mechanism under the working condition of water injection well borehole, based on the microelement analysis of fluid mechanics and the classical theory of hydrodynamics,...
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A high-temperature resistant and high-density polymeric saturated brine-based drilling fluid
October 2023
Three high-temperature resistant polymeric additives for water-based drilling fluids are designed and developed: weakly cross-linked zwitterionic polymer fluid loss reducer (WCZ), flexible polymer microsphere...
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Fine-grained gravity flow sedimentation and its influence on development of shale oil sweet sections in lacustrine basins in China
October 2023
The geological conditions and processes of fine-grained gravity flow sedimentation in continental lacustrine basins in China are analyzed to construct the model of fine-grained gravity flow sedimentation...
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Structural attributes, evolution and petroleum geological significances of the Tongnan negative structure in the central Sichuan Basin, SW China
October 2023
The Tongnan secondary negative structure in central Sichuan Basin has controls and influences on the structural framework and petroleum geological conditions in the Gaoshiti-Moxi area. To clarify the...
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Experimental study on flow heterogeneity of shale bedding fractures based on full-diameter cores
October 2023
A self-designed full-diameter core experimental facility was used to evaluate the flow heterogeneity of bedding fractures at four radial directions under different closure pressures and injection rates,...
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Trend of global carbon dioxide capture, utilization and storage industry and challenges and countermeasures in China
October 2023
This paper systematically reviews the trend of carbon dioxide capture, utilization and storage (CCUS) industry in the world and China, presents the CCUS projects, clusters, technologies and strategies/policies,...
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Global oil and gas development in 2022: Situation, trends and enlightenment
October 2023
Through analysis of four aspects, including the distribution and production of global oil and gas fields, the distribution and changes of remaining recoverable reserves, the differences in oil and gas...
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Performance evaluation of microemulsion acid for integrated acid fracturing in Middle Eastern carbonate reservoirs
October 2023
Considering the characteristics of carbonate reservoirs in the Middle East, a low-viscosity microemulsion acid that can be prepared on site and has an appropriate retardation ability was developed....
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An improved coupled flow-geomechanical model for cyclic steam stimulation
October 2023
Considering the pore deformation and permeability changes during dilation-recompaction in cyclic steam stimulation (CSS), an existing geomechanical model is improved and thermo-mechanically coupled...
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Analysis of the world deepwater oil and gas exploration situation
October 2023
The global trends in deepwater oil and gas exploration, characteristics of deepwater oil and gas discovery, and layout of deepwater oil and gas exploration business by seven major international oil...
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Impact frequency variation of self-excited oscillation pulsed supercritical carbon dioxide jets
October 2023
In order to obtain the impact frequency of resonant coal breaking by self-excited oscillation pulsed supercritical carbon dioxide (SC-CO2) jet, large eddy simulation was used to analyze the formation...
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Petroleum geology of marl in Triassic Leikoupo Formation and discovery significance of Well Chongtan1 in central Sichuan Basin, SW China
October 2023
In 2022, the risk exploration well Chongtan1 (CT1) in the Sichuan Basin revealed commercial oil and gas flow during test in a new zone – the marl of the second submember of the third member of Leikoupo...
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Characteristics and discovery significance of the Upper Triassic–Lower Jurassic marine shale oil in Qiangtang Basin, China
October 2023
Mesozoic marine shale oil was found in the Qiangtang Basin by a large number of hydrocarbon geological surveys and shallow drilling sampling. Based on systematic observation and experimental analysis...
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Tectonic features, genetic mechanisms and basin evolution of the eastern Doseo Basin, Chad
October 2023
The features of the unconformity, fault and tectonic inversion in the eastern Doseo Basin, Chad, were analyzed, and the genetic mechanisms and basin evolution were discussed using seismic and drilling...
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Fracture propagation, proppant transport and parameter optimization of multi-well pad fracturing treatment
October 2023
This paper establishes a 3D multi-well pad fracturing numerical model coupled with fracture propagation and proppant migration based on the displacement discontinuity method and Eulerian-Eulerian frameworks,...
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Quantitative evaluation model of shale oil adsorption: A case study of the first member of Cretaceous Qingshankou Formation in northern Songliao Basin, NE China
October 2023
A quantitative evaluation model that integrates kerogen adsorption and clay pore adsorption of shale oil was proposed, and the evaluation charts of adsorption-swelling capacity of kerogen (Mk) and adsorbed...
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Low organic matter abundance and highly efficient hydrocarbon generation of saline source rock in the Qaidam Basin, NW China
October 2023
The geochemical analysis and experimental simulation are comprehensively used to systematically study the hydrocarbon generation material, organic matter enrichment and hydrocarbon generation model...
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Evaluation of the coupled impact of silicon oxide nanoparticles and low-salinity water on the wettability alteration of Berea sandstones
August 2023
This study investigated experimentally the coupled effects of hydrophilic SiO2 nanoparticles (NPs) and low-salinity water (LSW) on the wettability of synthetic clay-free Berea sandstone. Capillary pressure,...
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Whole petroleum system and hydrocarbon accumulation model in shallow and medium strata in northern Songliao Basin, NE China
August 2023
Based on the oil and gas exploration practice in the Songliao Basin, combined with the latest exploration and development data such as seismic, well logging and geochemistry, the basic geological conditions,...
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Development, sand control mechanism and hydrocarbon accumulation of beach-bar sandstone in a saline lake basin: A case from the Neogene of southwestern Qaidam Basin, NW China
August 2023
Based on the data of field outcrops, drilling cores, casting thin sections, well logging interpretation, oil/gas shows during drilling, and oil/gas testing results, and combined with modern salt-lake...
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Distribution, evolution and structural properties of Wushenqi paleo-uplift in Ordos Basin, NW China
August 2023
This paper depicts the distribution of the Wushenqi paleo-uplift in the Ordos Basin by using the latest drilling and seismic data, and analyzes the tectonic evolution of the paleo-uplift with the support...
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Influencing factors and prevention measures of casing deformation in deep shale gas wells in Luzhou block, southern Sichuan Basin, SW China
August 2023
Based on structural distribution and fault characteristics of the Luzhou block, southern Sichuan Basin, as well as microseismic, well logging and in-situ stress data, the casing deformation behaviors...
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Shale oil and gas exploitation in China: Technical comparison with US and development suggestions
August 2023
The shale oil and gas exploitation in China is technically benchmarked with the United States in terms of development philosophy, reservoir stimulation treatment, fracturing parameters, fracturing equipment...
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