›› 2018, Vol. 39 ›› Issue (2): 1-1.doi: 10.7657/XJPG20180216

   

Triassic Channel Sand Body Identification and Efficient Well Placement in Tahe Oilfield

CHEN Shuyang, ZHENG Haini, XIAN Wei, DENG Feng   

  1. (Research Institute of Exploration and Development, Northwest Oilfield Company, Sinopec, Urumqi, Xinjiang 830011, China)
  • Online:2019-01-01 Published:1905-07-15

Abstract: The channel sand body in the 4th member of Triassic Akekule formation in Tahe oil field is characterized by ultra deep burial, thin sand body and narrow river channel. With the guidance of the study on sedimentary microfacies, a set of channel sand body identification and description technologies have been established, which uses forward modeling technology to determine marker, seismic multi-attribute identification technology to determine boundary, stratigraphic slicing technology to determine period and pseudo-sonic well-log-constrained impedance inversion technology to determine thickness. Based on which, a set of efficient well placement technologies combining pilot evaluation and step-like horizontal well development has been formed regarding segment reservoir accumulation of channel sand body with wide distribution of interlayer and barrier, which can reduce the risk in reservoir evaluation and improve reserves producing degree of channel sand body reservoir. Good application effects have been gained and the technologies can be the references for similar lithological reservoir development

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