准噶尔盆地彩南地区头屯河期河流变迁与砂体展布  

Fluvial Changes and Sandbody Distribution of Toutunhe Formation in Cainan Area,Junggar Basin

作　　者：李胜利[1] 于兴河[1] 杨志浩[1] 董雪梅 章彤 周越[1] 李莹[1] 

机构地区：[1]中国地质大学能源学院,北京100083 [2]中国石油新疆油田分公司彩南油田作业区,新疆阜康831500

出　　处：《新疆石油地质》2015年第6期660-667,共8页Xinjiang Petroleum Geology

基　　金：国家自然科学基金(41272132;41572080);国家科技重大专项(2011ZX05010-001)

摘　　要：准噶尔盆地白家海凸起头屯河组为典型的河流—泛滥平原沉积,由于其河流变迁与砂体展布规律一直缺乏深入研究,直接制约着彩南地区头屯河组的油气勘探与开发。通过野外露头观察与实测,明确了头屯河期的古河流类型与沉积序列,并建立了相应的沉积模式;结合测井、地震属性的综合分析,研究了彩南地区彩9—彩10井区古河流的识别特征、沉积演化及砂体展布规律。研究区头屯河期的古河流分布与演化主要受控于地形坡度和物源供给2大因素,在横切物源方向,河流沉积主要受控于地形坡度,在顺物源方向,物源供给则为主要的控制因素,砂体在研究区东西两侧集中发育,优势砂体展布方向以南北向为主。The Toutunhe formation in Baijiahai swell in Junggar basin is a typical fluvial-flood plain deposit. Its fluvial changes and sand- body distribution have been lack of in-depth studies, which restricts the oil and gas exploration and development of it. This paper clarifies the paleo-fluvial types and sedimentary sequences of Toutunhe formation by observation of the outcrops, presents corresponding sedimentary model; integrating with the well logging data and seismic attributes, it studies the identification characteristics, sedimentary evolution and sandbody distribution regularity of this fluvial deposit. The results show that such a distribution and evolution is mainly controlled by topographic slope and sediment supply. In the lateral expansion direction of the channels, the fluvial deposit is mainly controlled by topo- graphic slope; while along the provenance direction, the sediment supply becomes major controlling factor, The fluvial sand bodies are pre- dominately distributed in the east and west parts of the study area and major distribution of sandbody direction is from north to south.

关 键 词：准噶尔盆地 白家海凸起 头屯河组 河流变迁 砂体展布 

分 类 号：TE112.24[石油与天然气工程—油气勘探]