表征储层动用程度的方法探讨  

Study on new method to characterize the reservoir utilization degree

作　　者：王永平 梁爽[2] 韩雪芳 文佳涛 王欣然 WANG Yongping;LIANG Shuang;HAN Xuefang;WEN Jiatao;WANG Xinran(Tianjin Branch of CNOOC Ltd.,Tianjin,300459,China;EOR Key Lab in the Ministry of Education in Northeast Petroleum University,Daqing,Heilongjiang,163318,China)

机构地区：[1]中海石油(中国)有限公司天津分公司,天津300459 [2]东北石油大学提高油气采收率教育部重点实验室,黑龙江大庆163318

出　　处：《天然气与石油》2021年第1期61-66,共6页Natural Gas and Oil

基　　金：“十三五”国家科技重大专项“渤海油田加密调整及提高采收率油藏工程技术示范”(2016ZX05058001)。

摘　　要：目前关于沉积相对储层的动用程度的影响研究一般只是从定性的角度说明,如储层物性好的沉积相的动用程度一般较高,但是并没有一种方法能有效表征沉积相变和动用程度的关系。从某油田M区块一个典型区域出发,利用吸水剖面资料计算油层动用程度,根据油层沉积相的分布情况,将沉积相分布方式分为表内非主体-表外型、表外-尖灭型、大片的表内非主体或大片的表内主体型三种类型。研究表明:沉积相变与小层动用程度之间存在关系,引入相变系数的概念,通过分析相变系数和动用程度的关系,得出相变系数是一种能较客观实际地反映储层动用程度的新方法。该研究可为油田后续挖潜提供一定指导。At present,the studies on the influence of sedimentary facies on the reservoir utilization degree are generally described from a qualitative perspective only.For example,the utilization degree of sedimentary facies with good reservoir properties is generally higher,but there is no method to effectively characterize the relationship between sedimentary facies changes and the degree of utilization.Based on a typical area in Block M of an oil field,the utilization degree of oil formation is calculated using the water absorption profile.According to the distribution of the sedimentary facies of the oil formation,the distribution of the sedimentary facies is divided into three types:intra-surface non-main body-extra-surface type,extra-surface-pitching out type,and large intra-surface non main body or large intra-surface main body type.The study shows that sedimentary facies change and the utilization degree are correlated.With the introduction of the concept of sedimentary facies change coefficient,it is concluded that by analyzing the relationship between the facies change coefficient and the utilization degree,facies change coefficient is a new method that can reflect the reservoir utilization degree in a more objective and practical way.The study provides guidance for the development of oil field in the future.

关 键 词：沉积相 灰色关联 相变系数 动用程度 

分 类 号：TE328[石油与天然气工程—油气田开发工程]