渝东北双家坝气田黄龙组沉积微相分析  

Sedimentary micro-facies analysis of Huanglong Formation in the Shuangjiaba gas field,northeast Chongqing

作　　者：周永生[1] 郑荣才[1] 汪莉彬[2] 罗韧[3] 文华国[1] 陈智雍 

机构地区：[1]“油气藏地质及开发工程国家重点实验室”,成都理工大学,四川成都610059 [2]中石油新疆油田公司勘探开发研究院,新疆克拉玛依834000 [3]中石油西南油气田分公司川东北气矿,四川达州635000 [4]中石油西南油气田分公司勘探开发研究院,四川成都610041

出　　处：《中国地质》2013年第2期508-516,共9页Geology in China

基　　金：国家自然科学基金项目(41002033);国家科技重大专项(NO.2011ZX05030-003-02)共同资助

摘　　要：上石炭统黄龙组是渝东北双家坝气田天然气藏的主力产层。依据钻井、岩心、薄片、测井资料,并结合岩石学及古生物等的综合研究,建立了研究区石炭系黄龙组沉积模式。认为双家坝气田黄龙组沉积发育有萨勃哈、海湾陆棚2个沉积相带,具水体逐渐加深和范围向陆上超与扩大的海侵序列。根据沉积相标志又可进一步划分出6个亚相带和8个微相带。依据单井的沉积相研究成果进一步编制了黄龙组一段(C2hl1)、黄龙组二段(C2hl2)、黄龙组三段(C2hl3)沉积微相展布图,其中黄龙组二段的复合颗粒滩、砂屑滩、生屑滩微相是本区的有利沉积相带,为双家坝气田石炭系主力产气相带。Abstract：The Upper Caxboniferous Huanglong Format/on in the Shuangjiaba gas field of northeast Chongqirtg is the principal producing formation of natural gas pool. Based on the drilling, cores, thin slice and logging information,, in combination with a comprehensive study of petrology, paleobiology and well logging, the authors established a sedimentary model of Huanglong Formation. Studies show that the Huanglong Formation consists of two types of sedimentary systems, i.e., sabkha and continental shelf. The water bodies of two sedimentary systems deepened gradually and expanded, forming a transgression sequence. Six subfacies and eight microfacies were recognized based on the signature of sedimentary facies. On the basis of sedimentary facies of each well, the plane distributive map of sedimentary micro-facies about the first Member （C2h/1）, the second Member （C2h/2） and the third Member （C2h/f3） of the Huanglong Formation was compiled. Composite particles beach, calcarenite beach and bioclast beach are the most favorable microfacies. The second section of Huanglong Formation was the main gas-producing area in the upper Carboniferousperiod.

关 键 词：石炭系黄龙组 沉积微相 有利储层预测 双家坝气田 渝东北地区 

分 类 号：P618.13[天文地球—矿床学]