西南石油大学学报(自然科学版) ›› 2010, Vol. 32 ›› Issue (6): 29-32.DOI: 10.3863/j.issn.1674-5086.2010.06.007

• 地质勘探 • Previous Articles     Next Articles

GEOPHYSICAL RESPONSE CHARACTERISTICS OF THE GAS-BEARING RESERVOIR IN XUJIAHE FORMATION EASTERN，SICHUAN AREA

WANG Chang-cheng1,2   

  1. 1.College of Energy Resources，Chengdu University of Technology，Chengdu Sichuan 610059，China；2.State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation，Chengdu University of Technology，Chengdu，Sichuan 610059，China
  • Received:1900-01-01 Revised:1900-01-01 Online:2010-12-20 Published:2010-12-20

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Abstract: Appliying synthetic seismogram，reservoir displacement to Xujiahe Formation reservoir in eastern Sichuan area，this paper explores the characteristics of geophysical response and Formation mechanism of gas-bearing reservoir in Xujiahe formation with T-Structure in eastern Sichuan area.The results show that gas-bearing reservoir is low in frequency and weak in amplitudes reflection.The reason relies in two aspects：1.The decreased velocity of gas-bearing reservoir results in weak amplitudes，and under the effect of superimposed effects of the thin layer，the bottom of gas-bearing reservoir appears as weak amplitudes；2.The absorption of gas-bearing reservoir to high-frequency results in the mixing of sand and shale layers，and appears as weak amplitudes.The comprehensive response of these two aspects can be used as an index of gas-bearing reservoir to high position of T- Structure.

Key words: eastern Sichuan area, Xujiahe Formation, gas-bearing reservoir, geophysical response, formation mechanism

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