概率法在煤层气储量估算中的应用
投稿时间:2019-03-28  修订日期:2020-10-23  点此下载全文
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作者单位E-mail
徐晓燕 中海石油(中国)有限公司 xuxy13@cnooc.com.cn 
吴凡 中国海洋石油集团有限公司  
陆小霞 中联煤层气有限责任公司  
基金项目:国家重大专项66/Major national special projects 66
中文摘要:概率法储量估算以概率论为基础,视储量参数为在一定范围内变化的随机变量,并要求参数之间相互独立。估算结果为一条储量概率分布曲线( 或累计概率曲线),按规定概率值估算各类地质储量。国内煤层气储量计算一般采用体积法,煤层在平面上分布具有较强非均质性,本次研究用概率法分析煤层厚度、含气量、单点丰度分布形态,估算潘庄煤层气含气区不同风险值下煤层气地质储量。
中文关键词:概率法  煤层气  储量估算  风险值
 
Application of Probability Method in Coalbed Methane Reserve Estimation
Abstract:Probabilistic reserve estimation is based on probability theory, reserve parameters are regarded as random variables varying in a certain range,and parameters are Independent. The estimated result is a probability distribution curve of reserves(or a cumulative probability curve), estimate all kinds of geological reserves according to the prescribed probability value. Volume method is generally used to calculate coalbed methane reserves in China. Coal seam distribution in plane has strong heterogeneity, in this study, probability method is used to analyze the distribution pattern of coal seam thickness, gas content and single point abundance,estimate CBM geological reserves under different risk values in Panzhuang CBM gas-bearing area.
keywords:Probability method  Coalbed methane  Reserves estimation  Value at risk
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