天然气地球物理勘探

用常规及近、远道叠加剖面识别气层――以鄂尔多斯盆地苏里格庙气田盒8储层为例

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  • 中国石油勘探开发研究院廊坊分院; 中国石油大港油田油气勘探开发技术研究中心;

网络出版日期: 2003-08-20

TO IDENTIFY GAS LAYERS USING THE CONVENTIONAL STACKED PROFILES AND NEAR, FAR OFFSET TRACE STACKED PROFILES:AN EXAMPLE OF GAS RESERVOIR IN HE 8 SEGMENT IN SULIGE GASFIELD, ORDOS BASIN

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  • Research Institute of Petroleum Exploration and Development, Langfang Branch, Langfang 065007, China;Research Center of Petroleum Exploration & Development Technology, Dagang OilfieldCompany, PetroChina, Tianjin 300280, China

Online published: 2003-08-20

摘要

在以往对鄂尔多斯盆地上古生界碎屑岩气层的地震检测中,由于目的层埋藏深、气层厚度小、围岩与气层的波阻抗差小,“亮点”技术的应用受到较大的限制,即不能发现气藏内存在的明显物性或流体界面。为充分发挥地震迭前信息对检测天然气层的敏感性,我们以苏里格庙气田盒8储层为检测对象,首先将CMP道集的小角度部分道集及大角度部分道集分别迭加形成近、远道迭加剖面,然后分析常规迭加剖面和具有AVO特征的近、远道迭加剖面对气层的响应特征,最后证明,这种方法可用于气层的综合识别。

本文引用格式

欧阳永林;杨池银; . 用常规及近、远道叠加剖面识别气层――以鄂尔多斯盆地苏里格庙气田盒8储层为例[J]. 天然气地球科学, 2003 , 14(4) : 287 -290 . DOI: 10.11764/j.issn.1672-1926.2003.04.287

Abstract

The application of \"bright spot\" technique in seismic detection of upper Paleozoic clastic rock gas layers in Ordos basin is greatly restricted due to deep burial depth of target formations, small thickness of gas layers, small wave impedance differences between surrounding rock and gas layer, and no apparent physical property or fluid interfaces, etc. To bring into full play of the sensitivity of prestacked seismic information in detecting gas reservoir, the response characters of gas reservoirs are studied.

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