蜀南地区龙马溪组页岩气成藏基础分析  

Basic geologic analysis of shale gas accumulation in the Longmaxi formation in Shunan region

作　　者：方俊华[1] 朱炎铭[1] 魏伟 陈尚斌[1] 杜志立[1] 

机构地区：[1]煤层气资源与成藏过程教育部重点实验室中国矿业大学,江苏徐州221008 [2]中油勘探开发研究院廊坊分院,河北廊坊065000

出　　处：《特种油气藏》2010年第6期46-49,共4页Special Oil & Gas Reservoirs

基　　金：国家自然科学基金"煤中镜质组大分子结构演化与二次生烃动力学研究"(41072117)

摘　　要：蜀南地区早志留世处于较深水的陆棚沉积环境,广泛发育一套静水、缺氧环境下的黑色页岩,其中下志留统黑色笔石页岩十分发育。通过对以往研究资料分析处理、野外露头调查以及实验测试等手段,从页岩空间展布、埋藏与演化、有机地球化学等角度对龙马溪组黑色页岩进行了深入研究,结果表明:研究区龙马溪组黑色页岩有机质丰度高、成熟度较高、有机质类型好、演化程度高、厚度大、裂缝发育,具有形成页岩气藏的基础。该研究可加深对页岩气成藏基础条件认识,为其他有利区优选提供参考。The early Silurian in the Shunan region was in a sedimentary environment of deep water continental shelf,had widely developed a set of black shale under still water and anoxic environment,and especially developed was the black graptolite shale in the lower Silurian.The black shale in the Longmaxi formation has been studied intensively in respects of spatial distribution,burial and evolution,and organic geochemistry through analysis of previous research data,field outcrop survey and experiment test.The result shows that the Longmaxi black shale in the study area is characterized by high organic matter abundance,high maturity,good organic matter type,high evolution degree,thick,and developed fractures,which constitute favorable conditions of forming shale gas reservoir.This study is helpful to deepening understanding on shale gas accumulation conditions and provides reference for delineating other favorable zones.

关 键 词：龙马溪组 页岩气 资源前景 有机质丰度 非常规气藏 油藏规律 

分 类 号：TE122.3[石油与天然气工程—油气勘探]