二连盆地白音查干凹陷层序地层及其油气勘探意义
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摘要
基于测井和地震资料分析,识别了二连盆地白音查干凹陷的层序界面,建立了凹陷层序地层格架,研究凹陷内部沉积相类型及其平面展布特征,并建立了单断箕状断陷盆地沉积相模式。根据油气生、储、盖组合特征,预测腾格尔组(层序Ⅲ)和都红木组一段(层序Ⅳ)为油气有利成藏层位,南部缓坡河道砂体储集层和北部陡坡冲积扇储集层为油气有利储集相带,达尔其断块和桑合地区为油气有利成藏区块。
Based on an analysis of well-log data and seismic profiles,the authors have identified the main sequence boundaries in the Bayan Qagan subbasin of the Eren basin,established the sequence stratigraphic framework of the subbasin and described the types of sedimentary facies and their plan distribution and constructed a sedimentary facies model of this half graben.According to the features of the source-reservoir-cap rock assemblage,the authors predict that: the Tengger Formation(sequence Ⅲ) and the first member of the Duhongmu Formation(sequence Ⅳ) are the favorable target zones for petroleum exploration,the fluvial sand bodies along the southern gentle slope and alluvial fan deposits along the northern steep slope are the favorable reservoir zones for hydrocarbon accumulation and the Da'erqi fault-block and Sanghe district are favorable blocks for hydrocarbon accumulation.
Based on an analysis of well-log data and seismic profiles,the authors have identified the main sequence boundaries in the Bayan Qagan subbasin of the Eren basin,established the sequence stratigraphic framework of the subbasin and described the types of sedimentary facies and their plan distribution and constructed a sedimentary facies model of this half graben.According to the features of the source-reservoir-cap rock assemblage,the authors predict that: the Tengger Formation(sequence Ⅲ) and the first member of the Duhongmu Formation(sequence Ⅳ) are the favorable target zones for petroleum exploration,the fluvial sand bodies along the southern gentle slope and alluvial fan deposits along the northern steep slope are the favorable reservoir zones for hydrocarbon accumulation and the Da'erqi fault-block and Sanghe district are favorable blocks for hydrocarbon accumulation.
引文
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[8]祝玉衡,张文朝,王洪生,等.二连盆地下白垩统沉积相及含油性[M].北京:科学出版社,2000,65~189.
[9]Hamilton DS,Tadros NZ.Utility of coal seams as genetic stratigraphic sequence boundariesin nonmarine———An example fromtheGrunnedah basin,Australia[J].AAPG,1994,78(2).
[10]库国正,张放东,邓已寻,李西爱,王婧韫,柳金钟.白音查干凹陷变换构造与油气关系[J].石油与天然气地质,2005,26(2):257~262.
[11]王保才,王立志,李金平.白音查干凹陷西洼断裂控油特征[J].断块油气田,1999,6(2):11~12.
[2]张文华.层序地层学中的若干问题[J].石油勘探与开发,2000,27(2):18~21.
[3]朱筱敏.层序地层学原理及应用[M].北京:石油工业出版社,1998.
[4]池英柳,张万选,李潍连,唐文连.白音查干凹陷有利勘探目标预测[J].断块油气田,1997,6(4):5~9.
[5]张福顺,樊太亮,孙宜朴,库国正,张放东.二连盆地白音查干凹陷构造对沉积的控制作用[J].地质力学学报,2003,9(2):136~141.
[6]樊太亮,吕延仓,丁明华.层序地层体制中的陆相储层发育规律[J].地学前缘,2000,7(4):319~320.
[7]裘怿南,薛叔浩,应凤祥.中国陆相油气储集层[M].北京:石油工业出版社,1997,111~113.
[8]祝玉衡,张文朝,王洪生,等.二连盆地下白垩统沉积相及含油性[M].北京:科学出版社,2000,65~189.
[9]Hamilton DS,Tadros NZ.Utility of coal seams as genetic stratigraphic sequence boundariesin nonmarine———An example fromtheGrunnedah basin,Australia[J].AAPG,1994,78(2).
[10]库国正,张放东,邓已寻,李西爱,王婧韫,柳金钟.白音查干凹陷变换构造与油气关系[J].石油与天然气地质,2005,26(2):257~262.
[11]王保才,王立志,李金平.白音查干凹陷西洼断裂控油特征[J].断块油气田,1999,6(2):11~12.
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