2020 Vol. 26, No. 6

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2020, 26(6): .
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Inside Cover
2020, 26(6): 封三-封三.
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Inside Cover
2020, 26(6): 封二-封二.
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Cover Page
2020, 26(6): .
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Chief Editor’s Address
2020, 26(6): 1-2.
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Deformation characteristics of Early Paleozoic marine shale and their influence on the shale gas preservation in the eastern Sichuan-Wulingshan tectonic belt
LI Chunlin, LI Xiaoshi, WANG Zongxiu, LIANG Mingliang, ZHANG Kaixun, TAN Yuanlong, TAO Tao, GAO Li
2020, 26(6): 819-829. doi: 10.12090/j.issn.1006-6616.2020.26.06.064
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Two sets of marine shale systems (the Lower Cambrian Niutitang Formation and the Upper Ordovician Wufeng-Lower Silurian Longmaxi Formations) developed in the Lower Paleozoic of the eastern Sichuan-Wuling tectonic belt are not only significant decollement zones,but also key strata for shale gas explo...
Effect of shear on the development and adsorption capacity of organic pores in shale
YU Yuxi, WANG Zongxiu, FENG Xingqiang, ZHANG Kaixun, ZHANG Linyan
2020, 26(6): 830-839. doi: 10.12090/j.issn.1006-6616.2020.26.06.065
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Organic pore is the most important type of storage space for adsorbed gas and free gas in highly mature shale reservoirs. The marine shale formations in South China experienced complex structural deformations and the detachment structures widely developed. To investigate the effect of shear-induced ...
Effect of structural deformation on permeability evolution of marine shale reservoirs
LIANG Mingliang, WANG Zongxiu, LI Chunlin, LI Huijun, ZHANG Linyan, FENG Xingqiang, ZHANG Kaixun
2020, 26(6): 840-851. doi: 10.12090/j.issn.1006-6616.2020.26.06.066
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Compared to North America,the geological conditions of marine shale reservoirs in South China are highly diversified and complicated due to the multi-tectonic movement,which transformed the structure of shale seams and resulted in structural deformed shale with unique reservoir properties. To invest...
New progress and breakthrough difficulties on shale gas geological survey in the lower Yangtze area
ZHENG Hongjun, ZHOU Daorong, YIN Qichun, XIONG Qiangqing, WANG Zhongpeng, FANG Chaogang, TENG Long, SHAO Wei, WANG Yuanjun
2020, 26(6): 852-871. doi: 10.12090/j.issn.1006-6616.2020.26.06.067
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Shale gas breakthroughs are in urgent need in the construction of clean energy system in the Yangtze River Economic Belt. The previous geological and geophysical data in the lower Yangtze area were fully integrated,and a 1:250000 shale gas geological survey was systematically carried out in the lowe...
The characteristics and geological significance of highdensity methane-bearing inclusions in the Permian Gufeng Formation shale, southern Anhui
DONG Min, WANG Zongxiu, DONG Hui, ZHANG Linyan, SONG Wei, GUO Yingchun, LI Xiaoshi, FENG Xingqiang, MA Licheng, JI Changjun
2020, 26(6): 872-880. doi: 10.12090/j.issn.1006-6616.2020.26.06.068
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Samples of quartz veins were collected from the Permian Gufeng Formation siliceous shale fractures along the Changqiao profile,Jingxian County in southern Anhui. Inclusion composition analysis,thermodynamic temperature measurement,and laser Raman spectroscopy were carried out on the samples,and high...
Target window spatial distribution prediction based on network fracability: A case study of shale gas reservoirs in the Changning Block, southern Sichuan Basin
SHEN Cheng, ZHAO Jinzhou, XIE Jun, FAN Yu, SONG Yi
2020, 26(6): 881-891. doi: 10.12090/j.issn.1006-6616.2020.26.06.069
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Target window optimization has significance for marine shale gas reservoir stimulation. Taking the marine shale gas reservoir in the Longmaxi Formation of the Changning Block in the southern Sichuan Basin as the research object,argon ion polishing scanning electron microscope,Brazilian disk experime...
Simulation of oil-gas accumulation of clastic rocks and potential areas in the Tahe Oilfield
FENG Xingqiang, SONG Haiming
2020, 26(6): 892-900. doi: 10.12090/j.issn.1006-6616.2020.26.06.070
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To systematically study the oil-gas migration and accumulation of clastic rocks in the Tahe Oilfield,we carried out the simulation of oil-gas migration and accumulation using the comprehensive method of flow routing and percolation on the basis of the geologic character in the study area. The simula...
Classification of sedimentary basins and distribution patterns of oil and gas resources in the Arctic
ZHANG Kaixun, HAN Shuqin, MENG Qiuhan, HU Jingjing, YAN Chunfeng
2020, 26(6): 901-910. doi: 10.12090/j.issn.1006-6616.2020.26.06.071
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The Arctic has great potential for oil and gas resources, and the exploration and development of oil and gas are still in the early stage. It is an important strategic region for the future petroleum exploration. On the basis of up to date data from IHS and USGS as well as investigation results of o...
Distribution characteristics and genetic analysis of the abnormal fluid pressure in the middle Permian in the northern fault-fold zone of the western Sichuan Depression
LIU Wen, QIU Nansheng, MA Yinsheng, XU Qiuchen
2020, 26(6): 911-922. doi: 10.12090/j.issn.1006-6616.2020.26.06.072
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The temperature and pressure field is the key point for studying on the mechanism of hydrocarbon accumulation in the petroliferous basin, and the reconstruction of paleo-pressure particularly plays an important role in the study of hydrocarbon migration and accumulation, and even diagenesis in reser...
Logging characterization of Carboniferous fracturedvuggy karst reservoirs in the eastern Qaidam Basin
PENG Bo, ZHANG Hao, YANG Shenghao, WANG Shuai, YANG Yuanyuan, SHI Hui, HU Junjie, FANG Xinxin
2020, 26(6): 923-931. doi: 10.12090/j.issn.1006-6616.2020.26.06.073
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Since the Carboniferous reservoirs are characterized by low porosity and permeability in the Qaidam Basin, the later diagenetic transformation is particularly important for oil and gas exploration. Karstification of different scales, such as pores, fractures, and dissolution residual mounds, have be...
Characteristics and origin of crude oils in the Wulanhua sag
FENG Weiping, WANG Feiyu, WANG Zongxiu, SHI Yulei, JIANG Tao, WANG Yufan, ZHOU Hongfeng
2020, 26(6): 932-940. doi: 10.12090/j.issn.1006-6616.2020.26.06.074
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The Wulanhua sag is a newly discovered oil-rich sag in the Erlian basin. The physical and geochemical properties of crude oils in the Wulanhua sag were systematically analyzed to reveal the characteristics and origins. The physical properties of crude oils suggest that the API gravities range from 2...
Comparison and exploration of hydrocarbon expulsion patterns of different types of source rocks
HU Jinjie, TANG Youjun, HE Daxiang, FU Ning, LI Meijun
2020, 26(6): 941-951. doi: 10.12090/j.issn.1006-6616.2020.26.06.075
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Hydrocarbon expulsion from source rocks is a very important part in the accurate prediction of oil and gas resources in petroliferous basins. In order to obtain the hydrocarbon expulsion efficiency and mechanism, the source rocks of different organic matter types were selected for the gold tube simu...
Organic geochemistry and geological significance of oil seepage from the Devonian of Luquan area, Yunnan Province
MA Zhongliang, TAN Jingqiang, ZHAO Han, ZHENG Jiaxi, ZHAO Zhongxi
2020, 26(6): 952-960. doi: 10.12090/j.issn.1006-6616.2020.26.06.076
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With the successful exploration and development of marine conventional natural gas and shale gas in the Sichuan Basin, the oil and gas explorations in new areas and new strata are gradually put on the agenda. Devonian shales in Yunnan are widely distributed in local areas with high abundance of orga...
Discussion on the depositional timing of the Zhabusagaxiu formation in the eastern Qaidam Basin, China
MA Licheng, JIANG Wan, XIAO Zhouxuan, LI Zongxing, PENG Bo, HU Junjie, DONG Min
2020, 26(6): 961-972. doi: 10.12090/j.issn.1006-6616.2020.26.06.077
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The Carboniferous hydrocarbon exploration in the Qaidam Basin, Qinghai province in northern China, is the focus in the investigation of newly developed area and new series of strata. The Carboniferous sedimentary strata are fully exposed in the eastern part of the Qaidam Basin, and it has been assum...
Contents
2020, 26(6): 973-976.
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