改质水驱砂岩油藏生产动态预测方法  

Prediction method of production performance of modified water drive in sandstone reservoirs

作　　者：王高峰[1] 张志升[2] 杨承伟[3] 陈振波[3] 王敬瑶[1] 张金良[2] WANG Gaofeng;ZHANG Zhisheng;YANG Chengwei;CHEN Zhenbo;WANG Jingyao;ZHANG Jinliang(State Key Laboratory for Enhancing Oil Recovery(China Petroleum Exploration&Development Research Institute),Beijing 100083,China;Yanchang Oilfield Co.,Ltd.,Ansai,Shaanxi 717400,China;Changqing Oilfield Company,PetroChina,Xi'an,Shaanxi 710018,China)

机构地区：[1]提高石油采收率国家重点实验室(中国石油勘探开发研究院),北京100083 [2]延长油田股份有限公司,陕西安塞717400 [3]中国石油长庆油田公司,陕西西安710018

出　　处：《石油地质与工程》2020年第2期66-70,共5页Petroleum Geology and Engineering

基　　金：国家科技重大专项“化学驱提高采收率技术”(2016ZX05010-004)。

摘　　要：为增加改质水驱开发方案的可靠性,从油藏工程的基本原理入手,建立了改质水驱采收率计算的普适方法;并借助微分思想进行油藏剖分,在剖分网格采收率和油藏采出程度、采油速度之间建立联系,推导出了改质水驱产量、产量递减率指标的变化规律,以及改质水驱油藏含水率的预测方法;提出了改质水驱增产倍数的定义及其工程算法,明确了改质水驱增产倍数由改质水和常规水的初始驱油效率之比及转驱时的广义可采储量采出程度来决定。研究成果为改质水驱生产动态预测提供了必要的油藏工程依据,对改质水驱开发方案的编制和生产效果的评价具有指导意义。In order to increase the reliability of the modified water drive development plan,a general method for calculating the recovery factor of modified water drive is established based on the basic principles of reservoir engineering.Reservoir subdivision is carried out with the aid of the differential thought,and in some grids the relationship among the recovery factor,the recovery degree and the recovery speed of the reservoir is established.The change law of the production rate and the production decline rate index of modified water drive and the reservoir of modified water drive are derived.The definition and engineering algorithm of production increase multiple of modified water drive are put forward.It is clear that the production increase multiple of modified water drive is determined by the ratio of the initial displacement efficiency of modified water and conventional water and the recovery degree of generalized recoverable reserves when driving.The research results provide the necessary reservoir engineering basis for the prediction of the production performance of the modified water drive,and have a guiding significance for the formulation of the development plan of the modified water drive and the evaluation of the production effect.

关 键 词：砂岩油藏 改质水驱 生产动态预测 增产倍数 

分 类 号：TE331.3[石油与天然气工程—油气田开发工程]