节点文献
煤层气储层参数多信息综合定量预测方法
The qualitative prediction of the coalbed gas reservoir parameters
【摘要】 提出了以地震属性和钻孔测井参数为基础 ,以数学地质为桥梁 ,实现煤层气储层参数定量预测的科学方法。薄煤层厚与反射波振幅之间为单调增减关系公式 ;孔隙度与地震反射瞬时频率成正比关系 ,可采含气量与地震反射瞬时振幅成反比关系 ,且相关程度高。最后应用该成果对山西沁水煤层气地震勘探工程实际预测 ,对储层厚度、孔隙度、含气量做出定量预测。该成果有利于提高煤矿采煤安全性和降低煤层气开采的风险性 ,同时也将开拓地震勘探技术新的应用领域
【Abstract】 A new methodology is presented to predict coalbed gas reservoir parameters at relationship of seismic attribute and geological information.The basic methodology is to build a mathematic model through the regression analysis of the mathematic geology.Two achievements have been acquired. The first is that the equation of thin bed coal seam thickness to the reflecting amplitude; the second is that setting up the regression equation: one is the porosity-to-instantaneous frequency; the other is the gas-product percentage to the reflection amplitude. At the end, application of the research results to the Shanxi Qinshui coalbed gas seismic exploration project shows a satisfaction results and produce great economic interests.The study results are useful for inereasing the mining safety and decreasing the mining risk,as well as developing a new application field.
【Key words】 seismic interpretation; coalbed gas; quantitative prediction; methodology;
- 【文献出处】 煤田地质与勘探 ,Coal Geology & Exploration , 编辑部邮箱 ,2005年01期
- 【分类号】P618.11
- 【被引频次】18
- 【下载频次】439