CAJ | 학술논문

自1964年四川盆地在威远构造上震旦统灯影组地层中钻获威远气田以来，后经近半个世纪的勘探，至今尚无明显突破。本文以川东南地区上震旦统灯影组实测剖面和钻井岩芯观察为基础，结合岩石学、沉积学和构造地质等方法，对该地区沉积相、沉积微相和其碳酸盐台地沉积体系特征进行了综合分析，并进一步分析了沉积相平面展布及演化过程。研究区灯影组的亚相以局限台地相潮坪-泻湖相为主，夹台内滩相，微相则发育潮上带、潮间带、潮下带、泻湖、鲕粒滩和砂屑滩的沉积类型。通过单井相划分和联井剖面查明沉积微相在纵向上的变化，利用沉积微相平面分布图分析了研究区各沉积微相的平面分布特征。微相是控制储层发育的主要因素之一，各微相物性分析结果表明台内滩相储集物性最好，潮坪相次之，为今后寻找油气藏的优选部位。
자1964년사천분지재위원구조상진단통등영조지층중찬획위원기전이래，후경근반개세기적감탐，지금상무명현돌파。본문이천동남지구상진단통등영조실측부면화찬정암심관찰위기출，결합암석학、침적학화구조지질등방법，대해지구침적상、침적미상화기탄산염태지침적체계특정진행료종합분석，병진일보분석료침적상평면전포급연화과정。연구구등영조적아상이국한태지상조평-사호상위주，협태내탄상，미상칙발육조상대、조간대、조하대、사호、이립탄화사설탄적침적류형。통과단정상화분화련정부면사명침적미상재종향상적변화，이용침적미상평면분포도분석료연구구각침적미상적평면분포특정。미상시공제저층발육적주요인소지일，각미상물성분석결과표명태내탄상저집물성최호，조평상차지，위금후심조유기장적우선부위。
Since weiyuan gas field was found in Upper Sinian dengying formation which is in weiyuan structure of Sichuan basin in 1964, it hasn't been apparent breakthrough after exploration in semicentury .The article is based on measured sections and drilling cores observation of Upper Sinian dengying formation, combined with methods of petrology, sedimentary and structure geology, to analyse facies, microfacies and other carbonate platform sedimentary system comprehensively, and analyses facies distribution pattern with evolution process further. The primary subfacies of dengying formation in study area is restricted platform facies and tidal-lagoon facies, with intra-platform shoal. Sedimentary type like Supratidal zone, intertidal zone, subtidal zone, lagoon, oolitic beach and sandy beach is developed in microfacies. Longitudinal changes in microfacies can be observed in single well and united well sections. The distribution characteristic of every microfacies is analysed by using microfacies distribution pattern. The analysis in property of microfacies show that the reservoir property of intra- platform shoal is the best, and the tidal zone takes the second place. These will be the prior position in reservoir.