川东大天池气田龙门区块石炭系黄龙组沉积相研究  

SEDIMENTARY FACIES OF HUANGLONG FORMATION OF CARBONIFEROUS IN LONGMEN BLOCK OF DATIANCHI GAS FIELD IN EASTERN SICHUAN

作　　者：张成富[1] 徐国盛[1] 龚德瑜 曹竣锋[1] 杨运会[1] 

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

出　　处：《物探化探计算技术》2010年第4期371-379,336,共9页Computing Techniques For Geophysical and Geochemical Exploration

基　　金：中国石油西南油气田分公司项目(20050305-01-03)

摘　　要：龙门区块为四川盆地川东大天池构造带中段东南翼下盘的次一级潜伏背斜,从南到北依次分布有以鞍部相连的明达、龙门、任市三个次一级高点。这里依据川东大天池气田龙门区块石炭系黄龙组的钻井、岩芯、薄片、测井资料,结合区域地质背景,建立了研究区石炭系黄龙组(膏湖～咸化泻湖～陆表海)沉积环境变迁模式。将龙门区块石炭系黄龙组划分为三个亚相带,八个微相带。其中黄龙组二段的泻湖内浅滩是本区有利的沉积相带,主要分布在龙门-明达二高点处,为龙门区块石炭系主力产气相带。The Longmen block is a sub-grade concealed anticline of down wall of the southeast in the middle of the Datianchi structural belt in the east of Sichuan basin.From south to north,there are three sub-grade high points,Mingda,Longmen,and Renshi orderly joined in the block by saddle-linking.According to the drilling,cores,thin slice and logging information,and combining with the analysis of the regional geology background,the paper sets up the changes of the sedimentary environment pattern(gypsum lake-saline lagoon-epicontinental sea) of Huanglong formation,upper Carboniferous.The paper classifies the Huanglong formation,the upper Carboniferous of Longmen block into three subfacies and eight microfacies.Shallow of lagoon is the most favorable facies belt which mainly distributes two highs such as Longmen,Mingda.The second section of Huanglong formation is the mainly gas-producing area in the upper Carboniferous.

关 键 词：川东地区 大天池气田 龙门区块 石炭系 黄龙组 沉积微相 

分 类 号：P534.45[天文地球—古生物学与地层学]