Gas hydrate saturation model and equation for logging interpretation
December 2022
Since gas hydrate exists in three different forms at the same time such as pore filling, particle support and separate stratification, the calculation method of hydrate saturation using traditional...
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Experimental characterization and mechanism of hydraulic pulsation waves driving microscopic residual oil
December 2022
To clarify microscopic mechanisms of residual oil displacement by hydraulic pulsation wave, microscopic visualization experiments of hydraulic pulsation wave driving residual oil were carried out by...
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An intelligent prediction method of fractures in tight carbonate reservoirs
December 2022
An intelligent prediction method for fractures in tight carbonate reservoir has been established by upgrading single-well fracture identification and interwell fracture trend prediction with artificial...
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North slope transition zone of Songnan-Baodao sag in Qiongdongnan Basin and its control on medium and large gas fields, South China Sea
December 2022
Based on analysis of newly collected 3D seismic and drilled well data, the geological structure and fault system of Baodao sag have been systematically examined to figure out characteristics of the...
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Imbibition mechanisms of high temperature resistant microemulsion system in ultra-low permeability and tight reservoirs
December 2022
Lower-phase microemulsions with core-shell structure were prepared by microemulsion dilution method. The high temperature resistant systems were screened and the performance evaluation experiments were...
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Surface treatment technology of downhole water cut sensor
December 2022
Based on the structure, working principle, and working conditions of conductance water cut sensor, it is revealed that the early failure of the metal electrode of the sensor is due to the comprehensive...
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Simulation of pore space production law and capacity expansion mechanism of underground gas storage
December 2022
One-dimensional gas injection storage building and one-cycle injection-production modeling experiment, and two-dimensional flat core storage building and multi-cycle injection-production modeling experiment...
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Origin and diagenetic evolution of dolomites in Paleogene Shahejie Formation lacustrine organic shale of Jiyang Depression, Bohai Bay Basin, East China
December 2022
The origin of dolomite in Shahejie Formation shale of Jiyang Depression in eastern China were studied by means of petrologic identification, compositional analysis by X-ray diffraction, stable carbon...
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Gas expansion caused by formation uplifting and its effects on tight gas accumulation: A case study of Sulige gas field in Ordos Basin, NW China
December 2022
Gas expansion caused by significant exhumation in the Sulige gas field in the Ordos Basin since Late Cretaceous and its effects on hydrocarbon accumulation have been investigated systematically based...
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Sedimentary characteristics and model of gravity flow channel - lobe complex in a depression lake basin: A case study of Chang 7 Member of Triassic Yanchang Formation in southwestern Ordos Basin, NW China
December 2022
To reveal the development characteristics and distribution of gravity flow sedimentary system under micro-paleogeomorphologic units of the Chang 7 Member of Triassic Yanchang Formation in the southwestern...
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Discussion on the limit recovery factor of carbon dioxide flooding in a permanent sequestration scenario
December 2022
Based on practices of CO2 flooding tests in China and abroad, the recovery factor of carbon dioxide capture, utilization in displacing oil and storage (CCUS-EOR) in permanent sequestration scenario...
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Division and identification of vertical reservoir units in Archaeozoic metamorphic buried hill of Bozhong Sag, Bohai Bay Basin, East China
December 2022
Based on the data associated with cores, sidewall cores, casting thin sections, reservoir physical properties, conventional logging and imaging logging, the classification schemes of vertical reservoir...
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Geological structure and dynamic mechanism of the Termit rift basin in West African rift system
December 2022
Based on seismic and drilling data in the study area, the geological structure and kinematic process of the Termit rift basin were studied using seismic profile interpretation and balanced restoration...
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“Extreme utilization” development of deep shale gas in southern Sichuan Basin, SW China
December 2022
To efficiently develop deep shale gas in southern Sichuan Basin, under the guidance of “extreme utilization” theory, a basic idea and solutions for deep shale gas development are put forward and applied...
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Simulation of petroleum phase behavior in injection and production process of underground gas storage in a gas reservoir
December 2022
On the basis of analyzing the fluid phase behavior during the transformation from gas reservoir to gas storage, a mathematical model and an experimental simulation method are established to describe...
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Calculation of oil saturation in clay-rich shale reservoirs: A case study of Qing 1 Member of Cretaceous Qingshankou Formation in Gulong Sag, Songliao Basin, NE China
December 2022
The targeted reservoir, which is referred as the first member of Cretaceous Qingshankou Formation in Gulong Sag, Songliao Basin, NE China, is characterized by the enrichment of clay and lamellation...
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Lithofacies and pore features of marine-continental transitional shale and gas enrichment conditions of favorable lithofacies: A case study of Permian Longtan Formation in the Lintanchang area, southeast of Sichuan Basin, SW China
December 2022
In this work, the Permian Longtan marine-continental transitional shale in the southeast of Sichuan Basin was taken as study object. Through petrology and geochemical analysis, lithofacies types of...
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Micro/nano structured oleophobic agent improving the wellbore stability of shale gas wells
December 2022
Through embedding modified nano-silica particles on the surface of polystyrene using the method of Pickering emulsion polymerization, a kind of nano/micro oleophobic agent named OL-1 was developed....
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Sequence-lithofacies paleogeographic characteristics and petroleum geological significance of Lower Permian Qixia Stage in Sichuan Basin and its adjacent areas, SW China
December 2022
Through the analysis of logging, field outcrops, cores and geochemical data, and based on the study of the relationships between sea level changes, sequence filling, paleo-geomorphy and lithofacies,...
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Synthesizing CNT-TiO2 nanocomposite and experimental pore-scale displacement of crude oil during nanofluid flooding
December 2022
Metallic nanoparticles and carbon nanomaterials have been extensively studied in enhanced oil recovery. Carbon nanotube (CNT)/TiO2 nanocomposite is synthesized and investigated in terms of contact angle,...
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Hydraulic fracture geometry and proppant distribution in thin interbedded shale oil reservoirs
October 2022
Small-scale true triaxial sand fracturing experiments are conducted on thin interbedded shale samples made from cores of Permian Lucaogou Formation shale oil reservoir in Jimsar sag, Junggar Basin,...
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A method for identifying coalbed methane co-production interference based on production characteristic curves: A case study of the Zhijin block, western Guizhou, China
October 2022
Efficient detection of coalbed methane (CBM) co-production interference is the key to timely adjusting the development plan and improving the co-production efficiency. Based on production data of six...
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Techniques for improving fracture-controlled stimulated reservoir volume in ultra-deep fractured tight reservoirs: A case study of Kuqa piedmont clastic reservoirs, Tarim Basin, NW China
October 2022
Based on analysis of the reasons for low efficiency and low production after fracturing of some wells in the ultra-deep fractured tight reservoirs of the Kuqa piedmont zone, Tarim Basin and the matching...
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Analysis of the world oil and gas exploration situation in 2021
October 2022
The global exploration investment, new oil and gas discoveries, exploration business adjustment strategies of oil companies in 2021, and future favorable exploration domains are systematically analyzed...
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Status, trends and enlightenment of global oil and gas development in 2021
October 2022
By analyzing the distribution of global oil and gas fields and the reasons why some oil and gas fields are not in production, the distribution characteristics of oil and gas remaining recoverable reserves...
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