四川磨溪—高石梯地区龙王庙组层序划分及储层预测SEQUENCE STRATA AND RESERVOIR PREDICTION FOR LONGWANGMIAO FORMATION IN SICHUAN MOXI-GAOSHITI AREA
刘泠杉,胡明毅,高达,王頔,汪涛,邢梦妍
LIU Lingshan,HU Mingyi,GAO Da,WANG Di,WANG Tao,XING Mengyan
摘要(Abstract)：
四川盆地中部磨溪—高石梯地区下寒武统龙王庙组为碳酸盐岩地层。根据岩心、测井等资料,在层序划分、沉积相分析基础上,对龙王庙组储层进行了预测。研究认为:龙王庙组可划分2个层序,储层主要发育在高水位体系域中,层序2的储层类型和连通性相对较好、分布面积较大;龙王庙组为局限台地沉积,可划分为云坪、台内滩、滩间洼地、澙湖等4个亚相,储层主要发育于台内滩亚相;储层按物性可划分为3类,Ⅰ类储层主要分布在磨溪井区的台内滩发育区、西北部的剥蚀区边部,东部、南部主要为Ⅱ、Ⅲ类储层。
Lower Cambrian Longwangmiao Formation in Moxi-Gaoshiti area of Central Sichuan Basin is the carbonate stratum. According to the core,well logging data and so on,on the bases of the sequence division and sedimentary analysis,Longwangmiao Formation reservoirs were predicted. The achievements show that there are two sequences in the formation,the reservoirs are mainly developed in the highstand system tract,Sequence-2 is characterized by the relative better reservoir type and connectivity and moreover larger distribution area; Longwangmiao Formation is the restricted platform,which can be divided into four subfacieses: platform flat,intra-platform shoal,interbank flat and lagoon,the reservoirs are generally developed in the second subfacies; according to the physical properties of the reservoirs,Type-Ⅰreservoir is principally distributed in the developed block of the intra-platform shoal of Moxi Well Block and the denuded margin in the northwest,Type-Ⅱand Ⅲ reservoirs are mainly distributed in the east and south.
关键词(KeyWords)：
龙王庙组;层序;储层;碳酸盐岩;台内滩
Longwangmiao Formation;stratigraphic sequence;reservoir;carbonate;intra-platform shoal
基金项目(Foundation): 国家自然科学基金“碳酸盐岩台缘礁滩储层精细地质建模研究”(41372126);; 湖北省创新群体基金“碳酸盐岩岩溶储层成因机理及分布预测研究”(2015CFA024)资助
作者(Author):
刘泠杉,胡明毅,高达,王頔,汪涛,邢梦妍
LIU Lingshan,HU Mingyi,GAO Da,WANG Di,WANG Tao,XING Mengyan
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