Reservoir Evaluation and Development ›› 2022, Vol. 12 ›› Issue (1): 150-159.doi: 10.13809/j.cnki.cn32-1825/te.2022.01.013

• Shale Gas • Previous Articles     Next Articles

Characteristics of Tiansheng Outcrop in Wufeng Formation- 1st Member of Longmaxi Formation, Wulong, Chongqing

ZHAN Xiaohong1(),CHEN Xuehui1(),LIU Chao1,HE Wenbin2,ZHANG Zhiping3   

  1. 1. Research Institute of Exploration and Development, SINOPEC Jianghan Oilfield, Wuhan, Hubei 430233, China
    2. Sinopec Chongqing Fuling Shale Gas Exploration and Development Co. Ltd., Chongqing 408000, China
    3. Chongqing Institute of Geology and Mineral Resources, Chongqing 401120, China
  • Received:2022-01-01 Online:2022-02-26 Published:2022-03-24
  • Contact: CHEN Xuehui E-mail:zhanxh.jhyt@sinopec.com;chenxh.jhyt@sinopec.com

Abstract:

Taking the shale reservoir as the starting point, Tiansheng standard section is selected as the research object by the survey and optimization of the areas with simple structure, well-developed outcrops, fully developed strata and convenient transportation in Fuling, Nanchuan and Wulong areas. The shale heterogeneity of the outcrop is characterized in the aspect of stratigraphy, mineralogy, petrography, organic geochemistry and storage space, combined with pre-existing seismic, drilling,logging, and laboratory petrophysical and geochemical analyses. The research results show that this section is located in an area of relative stable structure has good horizontal comparability, of which each small layer has typical development characteristics and the thickness changes little. It is a representative and typical observation and research section, which can be used as a reference base for shale scientific research and teaching in Sichuan and Chongqing Region. Meanwhile, it is pointed out that the development of bentonite interlayer has a certain influence on shale quality and shale gas well fracturing. This method of the surface indicating the underground provides a certain guiding significance for the efficient development of shale gas wells.

Key words: shale reservoir, efficient development, Wufeng Formation-1st member of Longmaxi Formation, Tiansheng standard outcrop, Wulong area

CLC Number: 

  • TE132