STUDY OF GEOLOGICAL MODEL OF GAS RESERVOIRS IN CHUANXI DEPRESSION OF SICHUAN BASIN
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摘要: 川西坳陷位于四川盆地西部龙门山推覆带东侧前陆坳陷—斜坡部位。在坳陷中已发现的天然气田主要分布在上三叠统至下白垩统陆相碎屑岩地层之中。在气田的勘探开发中,地震反射波属性分析和联井反演储层标定、地震波属性提取分析、储层三维可视化雕刻及约束稀疏脉冲反演、储层参数建模反演、地质随机建模反演等方法的应用对气田的发现和气藏的描述起到了至关重要的作用。Abstract: The Chuanxi Depression is located in the eastern slope of Longmen mountain nappe belt, the west of Sichuan Basin.Gas reservoirs were mainly developed in Upper Triassic to Lower Cretaceous clastic sequences.Aanalysis of attributes of seismic reflection, correlated well interpretation, 3D reservoir visualization, constrained sparse spike inversion and stadmod inversion played an important role in reservoir characterization.Application of above technologies gained good result in construction of geological model of gas reservoirs in Chuanxi Depression.
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Key words:
- attribute of seismic reflectance /
- cross analysis /
- inversion /
- modelling /
- Chuaxi Depression
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[1] 叶军.川西新场气田上沙溪庙组(J2s)气藏储集体特征及形成机理研究[J].石油实验地质,1998,20(4):332-339. [2] 曹伟.川西侏罗系致密砂岩气藏裂缝特征[J].石油实验地质,1999,21(1):12-17. [3] 吕正祥.川西新场气田下沙溪庙组气藏预测评价研究[J].石油实验地质,2001,23(4):400-402.
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