川东嘉二~2层粒屑滩成滩方式及气藏分布规律  

GRAIN-CLASTIC BANKING OF T_1j_2~2 IN EAST SICHUAN BASIN AND GAS RESERVORING LAWS

作　　者：张奇[1] 秦成明[1] 张红梅[1] 

机构地区：[1]中国石油西南油气田分公司勘探开发研究院

出　　处：《天然气工业》2005年第S1期14-17,13,共5页Natural Gas Industry

摘　　要：川东嘉陵江组嘉二2层沉积环境是局限海台地蒸发相,沉积水体浅,水动力能量弱,其粒屑滩的成滩方式主要有两种,一是局限潮下变浅成滩,形成铁山、复兴场等气藏;二是潮坪膏盆边缘成滩,形成黄草峡、麦南等气藏。嘉一至嘉二期,川东地区继承了飞仙关末期的沉积构造格局,呈现北低南高的沉积环境(只是地势更加平缓),因而在川东地区的中北部,一般为局限潮下变浅成滩;而在川东中部及南部,则形成膏盆边缘滩。The sedimentary environment of T_1j_2~2 in Jialingjiang Formation in east Sichuan Basin is limitary sea platform evaporate facies, shallow deposition water body and feeble hydrodynamic energy, and its grain-clastic banking mainly is of tow types. One is limitary lowertidal shallowing and banking such as Tieshan and Fuxingchang gas reservoirs, the other is tidal flat gypsum basin edge banking as Huangcaoxia and Mainan reservoirs. T_1j1-T_1j2, being in the sedimentary environment of lower north and higher sou...

关 键 词：四川盆地 东 晚三叠世 粒屑滩 储集层 气藏形成 控制 

分 类 号：P618.13[天文地球—矿床学]