Lithologic Reservoirs ›› 2018, Vol. 30 ›› Issue (5): 51-58.doi: 10.12108/yxyqc.20180506

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Recoverable coefficient calibration of shale gas in Yanchang Oilfield,Ordos Basin

LIU Gang, ZHAO Qianping, LIU Chao, SUN Jianbo, YIN Jintao   

  1. Research Institute of Shaanxi Yanchang Petroleum(Group) Co., Ltd, Xi'an 710075, China
  • Received:2017-09-27 Revised:2018-04-04 Online:2018-09-14 Published:2018-09-14

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Abstract: The recoverable coefficient calibration of shale gas is the preferred method of shale gas resources evaluation for the area of low exploration degree. To take the shale gas zone in Yanchang Oilfield as the target,three fitting methods(analogy method,parameter weighting method and isothermal adsorption method) were used to calibrate the shale gas recoverable coefficient. Delphi weighting method was used to get accurate result in the actual block. With the exploration achievements of shale gas in Yanchang Oilfield,the method in this paper was used to calibrate the shale gas recoverable coefficient. The results show that the value of Triassic Yancheng Formation is 0.132,and the value of Upper Paleozoic Shanxi Formation and Benxi Formation is 0.201. The result could be important guidance for further exploration and development of shale gas in Yanchang Oilfield,it can also provide associated technical reference for the shale gas evaluation research in the other basins.

Key words: shale gas, recoverable resources, recoverable coefficient, Yanchang Oilfield

CLC Number: 

  • TE155
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