永安镇油田永3断块沙二下河口坝储层结构单元划分及其意义  

Architectural elements division of debouch bar of Lower Es_2 submember in Yong 3 fault-block reservoir in Yong'an Zhen Oilfield and its significance

作　　者：陈清华 周宇成[1,2] 孙珂 王晶[3] 王玺[4] 刘岩 孙克兵 

机构地区：[1]中国石油大学地球科学与技术学院,山东青岛266580 [2]中石化江苏油田分公司,江苏扬州225200 [3]承德石油高等专科学校石油工程系,河北承德067000 [4]南京大学地球科学与工程学院,江苏南京210093

出　　处：《中国石油大学学报（自然科学版）》2014年第2期10-16,共7页Journal of China University of Petroleum(Edition of Natural Science)

基　　金：国家油气重大专项(2009ZX05042-001);海外油气新项目快速评价方法研究(2008ZX05028-005-01)

摘　　要：根据结构单元分析法,以永安镇油田永3断块沙二下亚段6砂层组61小层为例,对河口坝增生体不同级别的沉积界面进行划分;在此基础上对河口坝增生体沉积演化特点、增生体的顶面构造特征以及增生体油(气)水分布规律进行研究。结果表明:永3断块沙二下6砂层组61小层划分为6期增生体;永3断块61小层可分6期演化,6期增生体具有由西向东退积的特点;不同河口坝增生体的发育位置、范围及其顶面构造特征对增生体油(气)水分布具有重要的控制作用;大型三角洲河口坝增生体可作为独立的油气分布单元,其油气储量可以相当可观,以增生体为单元进行油(气)水分布规律研究非常必要。Based on architectural element analysis, the delta-front debouch bar in the first layer of Es2^6 of Yong 3 fault-block reservoir in Yong＇an Zhen Oilfield was divided into depositional interfaces of various levels. The characteristics of the sedimentary evolution,the depositional architecture and the oil （gas） and water distribution were studied. The result indicates that the accretion sandbody of debouch bar can be divided into six stages. The evolution of the first layer of Es2^6 of Yong 3 fault-block reservoir in Yong＇an Zhen Oilfield is summarized as six periods, which is characterized by west to east retrogradation. The location, the area and the top-surface structure of the accretion sandbody control the oil （gas） and water distribution. The accretion sandbody of large-scale delta debouch bar,which has substantial reserves of oil and gas, can be used as independent oil and gas distribution unit, and it is highly necessary to study the distribution of oil（gas） by taking the accretion sandbody as an unit.

关 键 词：结构单元 划分 增生体 顶面构造 油水分布 

分 类 号：TE122.2[石油与天然气工程—油气勘探]