高邮凹陷真武油田转换式沉积演化模式  

Study on transformation style of sedimentary evolution model in Zhenwu oil-field, Gaoyou sag

作　　者：刘金华[1] 廖光明[1] 奥立德[1] 乔力[1] 葛政俊[1] 

机构地区：[1]中国石化江苏油田分公司地质科学研究院,江苏扬州225012

出　　处：《油气地质与采收率》2014年第1期6-9,111,共4页Petroleum Geology and Recovery Efficiency

基　　金：中国石化科研攻关项目"真武油田改善水驱提高采收率研究"(P11025)

摘　　要：沉积相及沉积体系是油气储层研究的重要组成部分。针对高邮凹陷真武油田戴南组和三垛组厚度大、沉积时间长、沉积类型多样等特点,通过对沉积背景和物源方向等分析,开展了沉积演化研究。结果表明,真武油田戴南组—三垛组发育辫状河、曲流河、三角洲、扇三角洲和陡坡带近岸水下扇5种沉积相,各种沉积相又可划分为多种沉积微相。通过对砂体厚度和粒度特征变化规律等进行分析可知,研究区具有双向三物源特征,即南、北双向均有物源,北部为1个物源,南部分为东南部和西南部2个物源。在研究区沉积相与物源研究的基础上,鉴于戴南组—三垛组沉积过程中双向三物源控制形成了多种沉积相发育的演化模式以及南、北物源转换控制的沉积特征,提出研究区发育转换式沉积演化模式,即在戴南组—三垛组沉积时期,研究区的物源由南向北发生转换。The study on sedimentary facies and sedimentary system are very important parts of the research of reservoir. In this paper,based on the reservoir in the Dainan-Sanduo formation of Zhenwu oilfield with high thickness and long sedimentary history, variablesedimentation type, and on the research of the depositional setting and provenance, we set up 5 kinds of sedimentary facies which arethe anastomosed stream, meandering river, delta, fan-delta and abrupt-fan. After the research of the thickness of the reservoir and therule of the size grade, the characteristic of provenance in the work area is in two directions and with three provenances. The south andnorth are both the direction of the provenance, and the south provenance has two parts, one is from the southeast, and the other is fromsouthwest. In the sedimentary evolution of the Dainan-Sanduo formation in Zhenwu oilfield, the south and north provenances controlledthe variable sedimentary facies and the sedimentary evolution model, and the transformation of the south and north provenances con-trolled the sedimentary characteristics, so we set up the transformation style sedimentary evolution model of the Zhenwu oilfield, and itsupplies the new method for the analysis of the reservoir origin and distribution.

关 键 词：沉积相 转换式沉积演化模式 双向三物源 戴南组-三垛组 真武油田 

分 类 号：TE111.3[石油与天然气工程—油气勘探]