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Apr 23, 2024Open Access
Conventional natural gas reservoirs are the main force of natural gas production and the “ballast stone”. In order to promote the continuous improvement of the development level of conventional gas fields, the gas reservoir recovery evaluation model and the main influencing factors are surveyed and analyzed. Then the difference between improving gas and oil reservoir recovery and the core concept of gas reservoir are compared and analyzed. And two core problems of unbalanced gas utilization and ...
Apr 03, 2024Open Access
Low permeability reservoirs are the main object of future oil and gas exploration and development in China. To achieve the efficient development of low-permeability reservoirs, the classification, geological and development characteristics and main exploitation technology are systematically analyzed by comparing and analyzing the development characteristics of 68 low-permeability sandstone oil fields at home and abroad. At the same time, starting from the analysis of reservoir damage caused by m...
Dec 29, 2023Open Access
In order to improve the development efficiency of low permeability and medium-high permeability medium-light reservoir, the research status, existing problems and development trends of air-foam enhanced recovery technology are summarized. The low temperature oxidation kinetics of air injection and the mechanism of foam micro flooding have been studied, but there are few studies of air-foam injection technology to improve oil recovery. Based on the previous studies, this paper systematically anal...
May 18, 2023Open Access
Hydrological conditions play a key role in the occurrence and accumulation of coalbed methane. In order to further study the hydrogeology and deep coalbed methane enrichment law, the analysis of hydrogeological conditions, formation water type, mineralization degree and groundwater parameters shows that: 1) High formation water metamorphic coefficient, low sodium chloride coefficient, low desulfurization coefficient and low magnesium calcium coefficient of common formation water in coalbed metha...
May 18, 2023Open Access
Block X is a new area of tight gas in the eastern part of the Ordos Basin, and the research on natural gas enrichment law in this area is relatively few. Therefore, it is of great significance to study the hydrocarbon generation history of Upper Paleozoic hydrocarbon source rocks in the study area. This paper starts with the hydrocarbon generation characteristics of the Upper Paleozoic, evaluates the coal, mudstone and carbonaceous mudstone of the Upper Paleozoic, and determines the hydrocarbon ...
May 08, 2023Open Access
Schlumberger Petrel seismic visualization interpretation system integrates geology and reservoir engineering, quickly realizes seismic data profile interpretation and three-dimensional interpretation, solid modeling, superstack processing and attribute extraction of seismic data, velocity analysis and time-deep relationship conversion, structural analysis and fault data extraction, transient attribute plane mapping, etc., and establishes seismic entity models through seismic data network resampl...
Apr 20, 2023Open Access
In order to serve the research of shale gas reservoir gas content and improve the prediction effect of shale gas reservoir gas content, this paper compares the factors influencing the gas content of shale gas reservoir and general prediction methods, and carries out the analysis of the factors influencing the gas content of shale gas and the response of sensitive logs in M1 well area, determines the main controlling factors of shale gas content, and establishes the prediction model of shale gas ...
Mar 30, 2023Open Access
In order to reveal the enrichment characteristics of shale oil in the southeastern Ordos Basin, the shale samples in Yan’an exploration area were taken as the research object, combined with drilling and logging data, geochemical tests such as organic carbon, rock pyrolysis and vitrinite reflectance were carried out, and the shale gas enrichment and main controlling factors of Yanchang Formation in the study area were discussed in detail. The results show that: 1) The organic carbon (TOC) content...
Mar 30, 2023Open Access
In the past, the research on tight oil accumulation in the eastern part of Shanbei slope of Ordos basin is relatively weak, mainly because the effective source rock is not developed in this area, and the crude oil is migrated from Chang 7 source rock in the center of the lake basin. Taking Qilicun Oilfield in Yan’an area as an example, this paper studies the reservoir-forming conditions of Chang 7 tight oil according to the methods and means of well logging, thin section identification, reservoi...
Mar 30, 2023Open Access
In this paper, in order to study the microscopic pore structure characteristics and influencing factors of its dense reservoir, the lithological characteristics and pore characteristics of the Chang 4 5 reservoir in Heijiabao area were studied by using casting thin section, scanning electron microscope, high pressure mercury compression and other testing techniques, and the reservoir distribution characteristics were also studied.
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