Reservoir Evaluation and Development ›› 2021, Vol. 11 ›› Issue (3): 281-290.doi: 10.13809/j.cnki.cn32-1825/te.2021.03.002

• Specialist Forum • Previous Articles     Next Articles

Exploration and development integration practice of subtle reservoir of 3rd member of Funing Formation in western slope of Qintong depression

LI Donghai1(),ZAN Ling1,HUANG Wenhuan1,2,YU Wenduan1,MA Xiaodong1,ZHENG Yongwang1,ZHOU Tao1,YIN Yanling1   

  1. 1. Sinopec East China Oil and Gas Company, Nanjing,Jiangsu 210019, China
    2. Sinopec Shengli Oilfield, Dongying, Shandong 257000, China
  • Received:2021-03-08 Online:2021-06-22 Published:2021-06-24


Aiming at the problems that the structural reservoir of the 3rd member of Funing Formation in the shallow layer of the western slope of Qintong depression is not developed and the benefit development of the deep low permeability reservoir is difficult, the sedimentary modeling technology and waveform inversion technology are adopted to deepen the study on the accumulation rule and evaluate the favorable area of the structural lithologic oil reservoir of the 3rsd member of the shallow Funing Formation. The spontaneous potential-waveform inversion technology can clearly describe the sand body of about five meters. Based on the established sedimentation and reservoir forming mode of shallow lake beach bar in the 3rd member of Funing Formation in the western slope of Qintong, Nanhua-Cangji ten-million-ton high quality reserve position has been found by the integrated research, deployment and implementation of exploration and development, and the exploration well success rate is 70 %. The construction and production mode of “decision-making and deployment, geological engineering, organization and operation integration” has been implemented to promote the structure-lithologic reservoir evaluation of the 3rd member of Funing Formation in the western slope of Qintong, and realize the available reserves of 1 003×104 t and the built the production capacity of 17.5×104 t. The break-even point for crude oil has been reduced from $81/bb1 to $46/bb1, enabling efficient exploration and development of concealed reservoirs.

Key words: exploration and development integration, subtle reservoir, thin sand layer, 3rd member of Funing Formation, west slope, Qintong depression

CLC Number: 

  • TE112