页岩气勘探的地球化学指标及测井分析方法初探  

Geochemical Parameters for Shale Gas Exploration and Basic Methods for Well Logging Analysis

作　　者：潘仁芳[1,2] 伍媛[2] 宋争[2] 

机构地区：[1]油气资源与勘探技术教育部重点实验室(长江大学),湖北省荆州市434023 [2]长江大学地球科学学院,湖北省荆州市434023

出　　处：《中国石油勘探》2009年第3期6-9,28,共5页China Petroleum Exploration

摘　　要：页岩气有别于已经大量开采的常规天然气,在成藏机理及赋存特征方面都有其独特的特点,识别页岩气的方法也有别于以往对常规天然气气藏的判别模式。总有机碳含量、成熟度是其重要的判别指标。通过对这些地球化学指标的认识,作为对可用地化分析样品的补充,利用测井资料计算这两个参数将有助于对页岩气藏的识别。总有机碳含量代表了页岩气源岩的生气潜力,成熟度则表现干酪根的演化程度,两者综合指示页岩储层中可能存在的天然气量。Shale gas is different from conventional gas that most developed, it shows uniqueness in generation and accumulations, and the method to discriminate shale gas also differs from those for conventional natural gas. Total organic content and maturity level are key parameters used for shale gas evaluation. By the knowledge of these geochemical parameters, in addition to the loss of available samples for geochemical analysis, well logging data could be used for calculating these two parameters and be a great benefit to shale gas recognition. Total organic content represents the potential of shale gas generation and maturity level represents kerogen's thermal maturity, both are combined to indicate the amount of gas stored in shale reservoirs.

关 键 词：页岩气 总有机碳含量 成熟度 测井分析 

分 类 号：TE122.3[石油与天然气工程—油气勘探]