Lithologic Reservoirs ›› 2014, Vol. 26 ›› Issue (5): 40-46.doi: 10.3969/j.issn.1673-8926.2014.05.008

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Igneous reservoir identification technique in eastern sag of Liaohe

CHEN Xingzhou， TONG Hengmao，LI Bing， YANG Shuo
  

  1. College of Geosciences， China University of Petroleum， Beijing 102249， China
  • Online:2014-10-20 Published:2014-10-20

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Abstract:

The igneous reservoir in eastern sag of Liaohe is characterized by complex geological environment and seismic reflection character, variable lithology and reservoir properties. The systematic research on structure features of igneous reservoir shows that igneous rocks are mainly controlled by Jiazhangshi-Jiexi slip faults system, symmetrically distributed fromsouth to north along the major fault, and mainly developed multicycle extrusive igneous rock and layered intrusive igneous rock. We used techniques of igneous rock seismic reflection identification, impedance inversion and time slice to identify Hongxing extrusive igneous body and Yulou intrusive igneous body, applied techniques of cycle classification, waveform clustering attributes and favorable reservoir inversion of igneous rocks to predict facies belt and favorable reservoir distribution of igneous bodies, and finally formed a set of identification and evaluation technique series of igneous rock. This set of technique series guided the exploration of igneous bodies in eastern sag of Liaohe and Lujiabao Sag, and it also provides technical support for igneous reservoir exploration in other area.

Key words: abnormal pressure, stress sensitivity, pulsation effect, water producing of gas well, trinomial deliverability equation

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