摘要
以胜坨油田二区东三段(D3)扇形断块为研究对象,以地质资料为基础,结合测井曲线、测井资料数字处理成果,从精细油藏描述的角度,对沉积微相砂体类型及特征进行了详细研究,建立测井相与沉积相的关系.得到了不同沉积期各相带的时空演化规律及展布特征,并建立了本区的沉积模式,定量讨论了沉积微相对剩余油分布的控制作用.结果表明:研究区内为辫状河和扇三角洲沉积,进一步分为4种亚相,9种微相.分流河道、河道侧缘、心滩、水下分流河道、河口砂坝是主要沉积微相类型,砂体沿北东—南西向呈扇形展布,且各时期形态具一定的继承性.纵向上正韵律层序剩余油富集于中、上部,反韵律层序剩余油分布差异小;平面上,剩余油主要分布在两条大断层附近以及大型河道砂体中.
The fan-shaped fault block in the third member of Dongyin g Formation i n the second block in Shengtuo Oilfield being taken as an example, the types and the characteristics of the sedimentary micro-facies are studied in detail base d on the geological data, log curves and the digital processing results of log da ta, and the relationship between log facies and sedimentary facies is set up. Th e distribution and the evolution of the sedimentary micro-facies are gained, an d the sedimentary model of this area is built. The controlling effect of sediment ary facies on the distribution of remaining oil is quantitatively discussed. The results show that there are fan-delta deposit and braided stream deposit in th i s area, they are further divided into 4 sub-facies and 9 micro-facies. Distrib ut ary channel, distributary channel edge, channel bar, submerged distributary chan nel, and debouch bar are the main micro-facies among them. The sedimentary sand b odies extend in the direction of northeast-southwest, and they show considerabl e inherited features in every periods. In profile, remaining oil mainly accumulat es in the middle and top of positive rhythms sequences, and it equably distribut es in the reverse rhythm sequences; in plane, remaining oil mainly distributes n ear two central faults and in great channel sandbodies.
出处
《西安石油大学学报（自然科学版）》
CAS
2005年第2期11-16,共6页
Journal of Xi’an Shiyou University（Natural Science Edition）
关键词
沉积微相
胜坨油田
剩余油分布
精细油藏描述
正韵律
辫状河
砂体
层序
展布
水下分流河道
Shengtuo Oilfield
sedimentary micro-facies
fine reserv oir description
remaining oil distribution FENG Jian-wei, YANG Shao-chun (College of Earth Resource and Inf ormation, Univer sity of Petroleum, Dongying 257061, Shandong, China) JXSYU 20
