四川盆地北部雷口坡组四段储集层研究  

Study on Reservoir of Lei-4 Member of Leikoupo Formation in Northern Sichuan Basin

作　　者：胡杨 王兴志[2] 曾德铭[2] 杜洋 黄易[2] 屈强[3] 

机构地区：[1]中国石油川庆钻探公司地质勘探开发研究院,成都610000 [2]西南石油大学油气藏地质及开发工程国家重点实验室,成都610500 [3]中国石油新疆油田分公司彩南油田作业区,新疆阜康831511

出　　处：《新疆石油地质》2012年第5期547-549,共3页Xinjiang Petroleum Geology

摘　　要：根据四川盆地北部中三叠统雷口坡组雷四段野外剖面及岩心的宏观及微观特征,结合常规物性资料,对其储集层的储集空间类型、岩性与物性、空间分布等基本特征以及主要控制因素进行了较为深入的研究。研究认为储集层集中分布于雷四段顶部的雷四3亚段,主要的储集岩类为颗粒白云岩,其次是晶粒白云岩;储集空间以粒间溶孔、粒内溶孔和晶间溶孔常见,裂缝为主要的渗透空间。储集层的形成与演化主要受到沉积相和成岩作用的影响,其中台内点滩是最有利储集层发育的相带,表生期岩溶作用和埋藏溶解作用导致主要储集空间的形成。Based on macroscopic and microscnpic features of outcrop sections and drilling cores of the Let-4 member of Leiknupo formation of Middle Triassic in northern Sichuan basin, combined with the conventional petrophysical data, this paper studies in detail the basic features of the reservoir space types, lithologie and petrnphysical properties, space distribution, as well as the main controlling factors. The reservoir is mainly distributed in Let-4（3） sub-member of the Leikoupo formation, with lithology of grain dolostone, next to crystalline dolostone. The intergranular, intragranular and intercrystal dissolved pores are mainly reservoir space, cracks as the main space of percolation. The reservoir formatinn and evolution are mainly affected hv sedimentary tholes and diagenesis, among which intra-platform patch beach is the most faworable facies for developing reservoirs, and supergene karstification anti burial dissolution give rise to the main storage spaces.

关 键 词：四川盆地 北部地区 雷口坡组 雷四段 储集层 

分 类 号：TE112.221[石油与天然气工程—油气勘探]