CAJ | 학술논문

　　松辽盆地梨树断陷苏家屯地区营城组具有形成油气藏的良好条件，且研究程度低。为了研究其沉积微相与砂体储集条件，以指明有利储集相带，应用沉积学与高分辨率层序地层序理论方法，通过分析岩心、录井、测井、地震资料、古地貌特征，认为研究区主要发育湖泊相和辫状河三角洲相，并进一步识别出了分流河道、水下分流河道、水下分流间湾、河口坝、远砂坝、席状砂、泥坪、滩坝等8种沉积微相，并描述了主要沉积微相砂体特征。同时，将营城组划分为4段、6个四级层序和7个砂组，阐明了各砂组沉积相分布特征和时空演化规律。研究认为，营一段末期（ SG2）湖侵至最大湖泛面，沉积于其上的SG3砂组进积体系是最有利的油气储集层。沉积微相平面展布与储层分析表明，该区存在两支主辫状水道，分流河道砂体叠置且储层物性好，其与后期鼻状构造相组合是构造－岩性圈闭与岩性圈闭发育的最有利区。
　　송료분지리수단함소가둔지구영성조구유형성유기장적량호조건，차연구정도저。위료연구기침적미상여사체저집조건，이지명유리저집상대，응용침적학여고분변솔층서지층서이론방법，통과분석암심、록정、측정、지진자료、고지모특정，인위연구구주요발육호박상화변상하삼각주상，병진일보식별출료분류하도、수하분류하도、수하분류간만、하구패、원사패、석상사、니평、탄패등8충침적미상，병묘술료주요침적미상사체특정。동시，장영성조화분위4단、6개사급층서화7개사조，천명료각사조침적상분포특정화시공연화규률。연구인위，영일단말기（ SG2）호침지최대호범면，침적우기상적SG3사조진적체계시최유리적유기저집층。침적미상평면전포여저층분석표명，해구존재량지주변상수도，분류하도사체첩치차저층물성호，기여후기비상구조상조합시구조－암성권폐여암성권폐발육적최유리구。
The Yingcheng Formation in Sujiatun area ,Lishu Rift in Songliao Basin ,has good conditions for the formation of petroleum reservoirs .However,the level of research is low in this area .The paper is to identify favorable reservoir faci-es belt through study of sedimentary microfacies and sandstone reservoir conditions .The theories of sedimentoloy and high-resolution sequence stratigraphy were applied and the cores ,mud logging ,well logging ,seismic data and palaeogeo-morphology data were integrated .The study revealed that lacustrine and braided river delta sedimentary facies are pre-dominant in the study area .Furthermore,eight sedimentary microfacies were identified ,including distributary channel ,un-derwater distributary channel ,underwater interdistributary ,month bar ,distal bar ,sheet-like sand ,mudflats and bank bars . And the main characteristics of sandstones of sedimentary microfacies are described .The Yingcheng Formation was divided into 4 Members,6 fourth-order sequences and 7 sand groups .The sedimentary facies distribution and their temporal and spatial evolution of each sand group ( SG) were discussed .The transgressive surface to maximum lake flooding surface occurred at the end of deposition of the Ying-1 Member (SG2),and the overlying SG3 is the most favorable reservoir. Analyses of plain distribution of sedimentary facies and reservoir reveal two main braided channels with good stacked distributary channel sand bodies and reservoir properties .The main braided channels in combination with late nose struc-ture are the most favorable areas for the development of structural-lithologic traps and lithology traps .