石油物探2012，Vol.51Issue(2)：151-155,5.DOI:10.3969/j.issn.1000-1441.2012.02.007
应用三分量地震数据提高Langmuir法计算煤层气含量的精度——以淮南顾桥煤矿为例
摘要
Abstract
Calculating coal-bed methane by using Langmuir equation on the basis of obtained absorption parameters in the laboratory is one of the mainly used methods to predict coal-bed methane content. This method needs given crustal stress and bulk density, which have lower accuracy with less bore holes. With borehole and logging data,coal-bed density,P-wave and S-wave velocity can be obtained by joint inversion combining three-component seismic datawith logging data. Then the Possion's ratio can be directly calculated. Furthermore, the crustal stress and bulk density can be obtained precisely. By this means, we can improve the accuracy of Langmuir method in predicting coal-bed methane content. At Guqiao Coalfield in Huainan by applying this workflow to 3D3C seismic data and logging data, the density, Possion's ratio and hydrostatic pressure of the coal-bed with different depth were calculated. As a result, the computation accuracy of coal-bed methane content is enhanced.关键词
煤层气/三分量地震勘探/地应力/泊松比/Langmuir公式Key words
coal-bed methane/three-component seismic explora-tion/crustal stress/Possion's ratio/Langmuir formula分类
天文与地球科学引用本文复制引用
杨维,王赟,芦俊,赵海珍..应用三分量地震数据提高Langmuir法计算煤层气含量的精度——以淮南顾桥煤矿为例[J].石油物探,2012,51(2):151-155,5.基金项目
国家科技重大专项(2011ZX05035-001-006HZ,2011ZX05035-002-003HZ,2011ZX05008-006-22,2011ZX05049-01-02,2011ZX05019-003)项目共同资助. （2011ZX05035-001-006HZ,2011ZX05035-002-003HZ,2011ZX05008-006-22,2011ZX05049-01-02,2011ZX05019-003）
