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Structure and Fluid Transportation Performance of Faults in the Changxing-Feixianguan Formation, Xuanhan County, Northeastern Sichuan Basin
投稿时间:2013-01-01  修订日期:2014-01-20  点此下载全文
引用本文:DU Chunguo, WANG Jianjun, ZHANG Jun, WANG Ping, XUE Mei and ZHOU Huayao.2014.Structure and Fluid Transportation Performance of Faults in the Changxing-Feixianguan Formation, Xuanhan County, Northeastern Sichuan Basin[J].ACTA GEOLOGICA SINICA(English edition),88(3):865~877
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DOI:
作者单位E-mail
DU Chunguo, WANG Jianjun, ZHANG Jun, WANG Ping, XUE Mei and ZHOU Huayao 1 Research Institute of Petroleum Exploration and Development, Beijing 100086, China 2 Weatherford (China) Energy Services Co., Ltd, Beijing 100027, China 3 PetroChina International Exploration and Development Company, Beijing 100034, China 4 China University of Petroleum, Beijing 102249, China duchunguo0304@163.com 
基金项目:We thank Zheng Rongcai (Chengdu University of Technology), Zhang Shulin and Cai Zhongxian (China University of Geoscience) for guidance and help with fieldwork, microscopic observation. Two anonymous reviewers offered valuable advice.
中文摘要:On the basis of field observations, microscopic thin-sections and laboratory data analysis of ten faults in Xuanhan County area, northeastern Sichuan Basin, central China, the internal and megascopic structures and tectonite development characteristics are mainly controlled by the geomechanical quality in brittle formation of the Changxing-Feixianguan Formation. The fluid transportation performance difference between the faults formed by different geomechanics or different structural parts of the same fault are controlled by the megascopic structure and tectonite development characteristics. For instance, the extension fault structure consists of a tectonite breccia zone and an extension fracture zone. Good fluid transportation performance zones are the extension fracture zone adjacent to the tectonite breccia zone and the breccia zone formed at the early evolutionary stage. The typical compression fault structure consists of a boulder-clay zone or zones of grinding gravel rock, compression foliation, tectonite lens, and dense fracture development. The dense fracture development zone is the best fluid transporting area at a certain scale of the compression fault, and then the lens, grinding gravel rock zone and compression foliation zones are the worst areas for hydrocarbon migration. The typical tensor-shear fault with a certain scale can be divided into boulder-clay or grinding gravel rock zones of the fault, as well as a pinnate fractures zone and a derivative fractures zone. The grinding gravel rock zone is the worst one for fluid transportation. Because of the fracture mesh connectivity and better penetration ability, the pinnate fractures zone provides the dominant pathway for hydrocarbon vertical migration along the tensor-shear fault.
中文关键词:Structural geology, fault tectonite, hydrocarbon migration, fluid transportation performance, Sichuan Basin
 
Author NameAffiliationE-mail
  duchunguo0304@163.com 
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版权所有:Acta Geologica Sinica (English Edition)
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