湖北及周缘五峰组—龙马溪组页岩气资源潜力  

Shale Gas Resource Potential of Wufeng- Longmaxi Formationsin Hubei and Its Periphery

作　　者：石创 徐思煌[1] 拜文华[3] 吴娟[1,4] 

机构地区：[1]构造与油气资源教育部重点实验室中国地质大学,湖北武汉430074 [2]中海石油(中国)有限公司深圳分公司,广东广州510240 [3]中国石油勘探开发研究院廊坊分院,河北廊坊065007 [4]中海石油(中国)有限公司湛江分公司,广东湛江524057

出　　处：《特种油气藏》2015年第6期65-69,144,共5页Special Oil & Gas Reservoirs

基　　金：国家科技重大专项"页岩气勘探开发关键技术"(2011ZX05018)

摘　　要：奥陶世五峰期—志留世龙马溪期湖北地区处于浅海陆棚环境中,以泥页岩沉积为主。类比分析认为,该套泥页岩层与北美页岩气高产层具有相似的构造演化和地质条件,具备形成页岩气聚集的有利条件。分析研究区页岩气成藏条件,提出页岩气勘探有利区的优选原则,结合TOC、镜质体反射率、有效厚度与埋深等值线图交集结果以及沉积相平面展布,优选勘探有利区块。采用体积丰度类比法计算有利区资源量,初步估算五峰组—龙马溪组页岩气资源量为2.48×1012m3,显示出该区巨大的资源潜力。Ordovician Wufeng- Silurian Longmaxi formations in Hubei were developed in shallow shelf environment with shale as its dominant deposition. Analogy analysis presents that the tectonic evolution and geology of this shale set is similar to that of the high- production shale sets in North America,and it is favorable to shale gas accumulation. The shale gas accumulation conditions of this area were analyzed and the selection principles of favorable zones were proposed. Favorable zones were selected by using TOC content,vitrinite reflectance,crossplot between contours of net thickness and buried depth and plane distribution of sedimentary facies. Volume abundance analogy was used to calculate the resources of favorable zones. According to the preliminary estimation,the shale gas resources of Wufeng- Longmaxi formations are 2. 48 × 10^(12)m^3,which indicates huge resource potential in this area.

关 键 词：页岩气 成藏条件 资源潜力 五峰组—龙马溪组 湖北及其周缘 

分 类 号：TE122.2[石油与天然气工程—油气勘探]