四川盆地西部侏罗系沙溪庙组气藏成藏条件  

RESERVOIR FORMING CONDITIONS OF JURASSIC SHAXIMIAO FORMATION, WEST SICHUAN BASIN

作　　者：唐大海[1] 陈洪斌[1] 谢继容[1] 罗远平[2] 曹世昌[2] 

机构地区：[1]中油西南油气田公司勘探开发研究院 [2]中油西南油气田公司重庆气矿

出　　处：《天然气勘探与开发》2005年第3期14-19,共6页Natural Gas Exploration and Development

摘　　要：四川盆地西部侏罗系沙溪庙组是河流—三角洲—滨浅湖沉积为主的红色砂泥岩系,天然气资源相当丰富。综合研究认为,沙溪庙组气藏成藏条件应具备以下条件,即充足的气源、发育的储集砂体和气源断裂、一定规模的圈闭条件和良好的保存条件。白垩纪—早第三纪是上三叠统烃源岩的主要生气期,沙溪庙组气藏分布受古构造的影响。进一步指出,大邑—蒲江—新津地区,江油—梓潼—苍溪地区是沙溪庙组气藏勘探的有利地区,勘探前景广阔。Abundant in natural gas sources, Jurassic Shaximiao Formation in west Sichuan Basin is a red sandstone and shale mainly deposited in fluvial, deltaic shoal faces. A comprehensive research shows that reservoir forming conditions of Shaximiao formation should include abundant gas sources,developed reservoir sandbody, gas resources rupture, trap conditions and good conservation. Main gas of Upper Triassic source rock occurred from Cretaceous to Early Tertiary.The palaeostructure has an influence on the gas reservoir distribution of Shaximiao Formation. Furthermore, it indicates that some areas such as Dayi-Pujiang-Xinjin zone and Jiangyou-Zitong-Cangxi zone are favorable and have a good exploration potential.

关 键 词：四川盆地 西部侏罗系沙溪庙组 气藏 成藏条件 天然气资源 圈闭条件 地质条件 

分 类 号：P618.13[天文地球—矿床学]