焉耆盆地博湖坳陷三工河组下段地震相—沉积相分析

doi:10.3969/j.issn.1673-8926.2012.02.003

Lithologic Reservoirs ›› 2012, Vol. 24 ›› Issue (2): 11-15.doi: 10.3969/j.issn.1673-8926.2012.02.003

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Seismic facies and sedimentary facies of the lower segment of Sangonghe Formation in Bohu Depression, Yanqi Basin

GUO Wei¹， LI Xiaogang¹， LIU Shangjun²， LIN Sheqing³， YAN Yongxin³

（1. College of Energy Resources， Chengdu University of Technology， Chengdu 610059， China； 2. Research Institute of Exploration and Development， Northwest Oilfield Company， Sinopec， Urumqi 830011， China； 3. Research Institute of Exploration and Development， Henan Oilfield Company，Sinopec， Nanyang 473132， China

Online:2012-04-20 Published:2012-04-20

Abstract

Abstract:

In order to study the favorable distribution area of lithologic traps in Bohu Depression ofYanqi Basin, based on seismic sequence division, the amplitude, frequency, continuity, internal structure and external formof seismic reflection wave were applied to analyze the seismic facies in the study area, and the seismic facies of the target zone can be divided into six types. The seismic facies is transformed into sedimentary facies bymeans of well-seismic combination. The result shows that six types of sedimentary facies are distinguished in the lower segment of Sangonghe Formation of Bohu Depression, including alluvial fan, braided river delta plain, delta front, shore-shallowlacustrine, turbidite fan and semideep lake facies. Meanwhile, there developed five types of larger sedimentary bodies, which corresponds to the three
provinces in the northwest, northeast and south of the study area. It is considered that lithologic traps are less developed in the lower segment ofSangonghe Formation, only formed in the locally developed mouth bar, shore-shallowlacustrine beach bar and turbidite fan.

Key words: adsorbed gas reservoir, isothermal adsorption, adsorbed layer density, material balance

GUO Wei， LI Xiaogang， LIU Shangjun， LIN Sheqing， YAN Yongxin. Seismic facies and sedimentary facies of the lower segment of Sangonghe Formation in Bohu Depression, Yanqi Basin[J].Lithologic Reservoirs, 2012, 24(2): 11-15.

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