Reservoir Evaluation and Development ›› 2018, Vol. 8 ›› Issue (4): 68-72.

• Non-conventional Reservoir • Previous Articles     Next Articles

Geological features of Guanyinqiao member and its influence on the shale gas production: A case study of Nanchuan district

Li Jiaxin   

  1. Nanchuan Shale Gas Project Department, East China Oil and Gas Company, SINOPEC, Chongqing 408400, China
  • Received:2018-03-19 Online:2018-08-26 Published:2018-11-28


The guanyinqiao member in Southeast of Chongqing is a suit of argillaceous limestone formation formed in the Nantes period. The sea level and the control of ancient landform are the main factors affecting the strata. The strata overlying and underlying layer are both black shale formed in deep-water sedimentary environment. On the plane, Guanyinqiao member is distributed uniformly and missing in some parts. By analyzing the characteristics of Guanyinqiao member in Nanchuan area, and combined with the static evaluation indexes and single well productivity of the shale gas wells in this area, we analyzed that whether there was the relationship between the productivity of shale gas well and the existence of the member, thus affecting the shale gas production. The conclusion has geological guidance to the selected areas of shale gas in the Southeast of Chongqing, and great guiding significance on exploration strategy of shale gas.

Key words: Nanchuan district, Guanyinqiao member, shale gas, selected area

CLC Number: 

  • TE122