气驱油藏开发效果评价新方法及其应用  

A New Method for Evaluating the Development Effect of Gas Drive Reservoir and Its Application

作　　者：孟智强 祝晓林 王永平 文佳涛 刘超 MENG Zhiqiang;ZHU Xiaolin;WANG Yongping;WEN Jiatao;LIU Chao(Tianjin Branch of CNOOC Ltd.,Tianjin 300459,China)

机构地区：[1]中海石油(中国)有限公司天津分公司,天津300459

出　　处：《重庆科技学院学报（自然科学版）》2022年第1期15-21,共7页Journal of Chongqing University of Science and Technology：Natural Sciences Edition

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：为了优选气驱油藏的开发措施,提高其开发效果,需要准确判断不同措施对油藏开发效果的影响。利用达西定律、物质平衡方程和油气两相渗流的幂函数关系将气油体积比与采出程度联系起来,推导出关于气油比、采出程度和采收率的数学模型。该模型揭示了稳定渗流条件下气油体积比随采出程度呈对数增长的客观规律,可通过气油体积比和采出程度的变化判断气驱油藏开发效果的变化趋势。数值模拟实验结果表明,根据气油体积比和采出程度关系图版可有效地评价气驱油藏的开发效果。通过矿场实践,对气驱油藏全寿命开发策略进行了评价,提出了适用于该类油藏的“控、卡、提、加密”全寿命生产管理策略。In order to select favorable development measures and improve the effect of gas drive reservoir development, it is necessary to accurately judge the impact of different measures on the development effect of the reservoir.Based on the analysis of the development characteristics of gas drive reservoirs, Darcy’s law, material balance equation, and the power function relationship of oil and gas two-phase seepage flow are used to link the gas-oil ratio and the mathematical model of gas oil ratio on recovery degree and recovery factor is deduced.This model reveals the objective law that the produced gas-oil ratio increases logarithmically with the degree of recovery under the condition of stable seepage, and it can use the change of the gas-oil ratio and the degree of recovery to judge the trend of the development effect of the gas drive reservoir.Numerical simulation test verification results show that it is more effective to determine the development effect of gas drive reservoirs based on the relationship between gas-oil ratio and recovery degree.Through field practice, the whole life development strategy of gas drive reservoirs is evaluated, and the whole life production management strategy of “controlling, trapping, lifting, and intensifying” of this type of oil reservoir is put forward.

关 键 词：气驱油藏 气油比 采出程度 开发效果 评价方法 

分 类 号：TE32[石油与天然气工程—油气田开发工程]