摘要
介绍了叠前地震反演技术在苏里格气田有效储层识别和含气性检测中的应用。通过岩石物理分析建立了弹性参数与储层参数之间的联系,指出了工区内岩性、物性和流体的最敏感弹性参数。通过叠前地震反演获取了各种弹性参数反演结果,并根据岩石物理分析的结论将叠前地震反演结果进行综合解释,从密度和速度比交会图获得了岩性剖面,对识别出的砂岩根据反演的纵波阻抗计算了孔隙度剖面,对孔隙度大于5%的砂岩,利用笔者提出的新方法得到了含水饱和度剖面,在此基础获得了孔隙度含气饱和度乘积剖面。
This paper presents an application of prestack seismic inversion technology to reservoir prediction and gas detection. By rock physical analysis, the relation between elastic parameters and reservoir properties is constructed. By pres-stack inversion, a number of various elastic parameters are obtained. The joint interpretation of these inverted parameters are then carried out in the guidance of the conclusions drawn from the rock physical analysis., lithology sections are obtained by cross-plotting density and Vp/Vs sections; porosity sections are transformed from P-impedance sections for the predicted sands, water saturation sections are obtained from several elastic inversions using the new method given in this paper; the product of porosity and water saturation are then derived.
出处
《天然气地球科学》
EI
CAS
CSCD
2008年第2期261-265,共5页
Natural Gas Geoscience
基金
中油股份公司科技风险创新项目(编号:050511-1-6)资助
关键词
叠前地震反演
弹性参数
岩石物理分析
含气性检测
Pre-stack seismic inversion
Elastic parameters
Rock physical analysis
Gas detection.
