叠前地震反演技术在苏里格地区的应用  

Application of Pre-stack Seismic Inversion in Sulige Area

作　　者：郭晓龙[1] 欧阳永林[1] 陈海东[1] 耿晶[1] 代春萌[1] 

机构地区：[1]中国石油勘探开发研究院廊坊分院,河北廊坊065007

出　　处：《天然气地球科学》2008年第6期840-843,共4页Natural Gas Geoscience

摘　　要：苏里格气田主要储集层为盒8段辫状河河道砂岩,其砂体横向变化快,含气层与围岩的纵波阻抗差小,预测困难。岩石物理分析表明,纵横波速度比(vp/vs)、泊松比(σ)和λρ等3个弹性参数能够反映地层的含油气性信息。在横波预测的基础上,对苏里格地区进行了叠前地震反演,取得了很好的应用效果,为该区含油气性预测提供了依据。The main reservoir in the Sulige gas field lies in the sandstone of the Segment He8 braided river channel. The sand body varies quickly in lateral direction, and it is difficult to predict for little difference of impedance between gas-bearing bed and surrounding rocks. According to petrophysical analysis, some elastic parameters such as P-S velocity ratio, Poisson ratio, Xp could reflect the informations about hydrocarbons in the formation. Based on the S-wave prediction, we carried out pre-stack seismic inversion in the Sulige district and gained good results which provides an important method for the hydrocarbon-bearing prediction in this area.

关 键 词：叠前地震反演 横波速度预测 岩石物理分析 弹性参数 

分 类 号：TE132.14[石油与天然气工程—油气勘探]