冀中坳陷北部天然气类型、成藏模式及成藏条件研究  

Study on Natural Gas Type, Reservoir Forming Models and Conditions in North Jizhong Depression

作　　者：梁宏斌[1] 降栓奇[1] 杨桂茹[1] 淡伟宁[1] 王文英[1] 

机构地区：[1]华北油田勘探开发研究院,河北省任丘市062552

出　　处：《中国石油勘探》2002年第1期17-33,共17页China Petroleum Exploration

摘　　要：从天然气的地球化学特征入手,结合天然气藏的地质环境,划分出生物成因气、生物改造气、生物—热催化过渡带气、热解气、煤成气和煤层气等6种成因类型的天然气。以此为线索,深入剖析了各类天然气的形成条件及形成机制,总结了持续沉降高演化气、二次生气、浅层运移、生物—热催化作用和浅层(后期式)生物作用等5种成藏模式,发现了煤成气和以第三系为源岩的天然气两种成藏序列,对天然气勘探具有重要的指导意义。The second peak of natural gas exploration came in the later period of the 'Ninth Five Year Plan' in Jizhong depression after it had no news for more than ten years. Certain progress had been made on the study of reservoir forming conditions. In this paper, six genetic types of natural gas have been classified on the basis of their geochemical features and the geological settings of gas reservoirs. Therefore, formation conditions and mechanism for all types of natural gas in Jizhong depression have been thoroughly analyzed and five kinds of reservoir forming models have been summarized. The discovered two kinds of natural gas reservoir forming sequence from coal-formed gas and Tertiary source rock have significant instructive sense to natural gas exploration. The study results have gained well exploration effect in practical application.

关 键 词：冀中坳陷 天然气类型 成藏模式 成藏条件 研究 成藏序列 

分 类 号：P618.130.2[天文地球—矿床学] TE12[天文地球—地质学]