曲流河沉积非均质性研究——以北一区断东“二三结合”试验区葡Ⅰ2沉积单元为例  

The Heterogeneity Description of Meandering River:A Case from PⅠ2 Unit of "2(Class 2 Reservoir)-3(Class 3 Reservoir) Combination" Pilot Area in North 1th Fault Block

作　　者：姚子修[1] 郝银全[1] 常毓文[1] 宋本彪[1] 

机构地区：[1]中国石油勘探开发研究院,北京100083

出　　处：《内蒙古石油化工》2008年第21期90-93,共4页Inner Mongolia Petrochemical Industry

摘　　要：大庆油田曲流河沉积厚油层聚合物驱油后进一步提高采收率面临着含水高、剩余油高度分散等难点。为了准确描述剩余油分布特征,需要精细刻画曲流河沉积厚油层非均质性。本文以北一区断东"二三结合"试验区葡Ⅰ2沉积单元为例,按照平面非均质性、层内非均质性两个方面对葡Ⅰ2单元非均质性进行了精细刻画。提出聚驱后厚油层非均质性的主要研究内容,即:平面上开展单砂体分布特征研究;层内开展对曲流河侧积夹层的定量描述。该研究成果不仅增加了储层非均质性研究的深度和精度,而且为精细刻画聚驱后剩余油分布特征奠定了地质基础。In the process of enhance oil ratio in meandering river deposits thick oil layers after polymer flooding in Da qing oil field, there are many difficulties,such as high water cut and highly scattered remaining oil. In order to further make precise description of remaining oil, we have to do detailed hetero-geneity description of thick oil layer in meandering river. Taking P I 2 unit of “2 （class 2 reservoir）-3 （class 3 reservoir） combination” pilot area in North lth fault block as an example, we have done hetero- geneity analysis according to plane heterogeneity and intra-layer heterogeneity. We have put forward the main points of thick oil layer heterogeneity study after polymer flooding; that are, description of single sand body in plane and description of lateral accretion-interbeds in intra-layer. Through the study, we not only deepen reservoir heterogeneity study and make the results more precise, but also lay the foundation of detailed description of remaining oil after polymer flooding.

关 键 词：曲流河 平面非均质性 单砂体 层内非均质性 侧积夹层 

分 类 号：TE34[石油与天然气工程—油气田开发工程] P618.130.2[天文地球—矿床学]