利用注水替油资料计算塔河缝洞型油藏动态储量的方法  

Calculating method of the dynamic reserves by water injecting and oil flooding data for the fractured-vuggy oil reservoirs in Tahe Oilfield

作　　者：巫波[1] 杨文东 姜应兵 张晓[1] WU Bo;YANG Wendong;JIANG Yingbing;ZHANG Xiao(Petroleum Exploration&Production Research Institute,SINOPEC Northwest Oilfield Company,Urumqi 830011,China;Xii an Sinoline Petroleum Science&Technology Co Ltd,Xii an 710065,China)

机构地区：[1]中国石化西北油田分公司勘探开发研究院,新疆乌鲁木齐830011 [2]西安华线石油科技有限公司,陕西西安710065

出　　处：《大庆石油地质与开发》2022年第2期59-66,共8页Petroleum Geology & Oilfield Development in Daqing

基　　金：国家科技重大专项“塔里木盆地碳酸盐岩油气田提高采收率关键技术示范工程”(2016ZX05053)。

摘　　要：在塔河缝洞型碳酸盐岩油藏动态储量评价中,由于缝洞储层介质类型多样、尺度不一、分布复杂、非均质性较强,无法准确确定储层综合压缩系数,缝洞型油藏动态储量评价结果可靠性差。基于油井注水替油资料,对油井储层在弹性驱阶段和注水替油后替油阶段建立相应的物质平衡方程,建立2个阶段弹性产率公式,联立方程组求解储层动态储量和综合压缩系数,对比多轮次计算结果的稳定性来验证其可靠性。其中验证后的储层综合压缩系数可用于所在缝洞油藏的动态储量计算,相较常规的可靠性较差的经验取值方法,该方法可提高缝洞油藏动态储量计算结果的可信度和准确度。In the evaluation of the dynamic reserves of fractured-vuggy carbonate reservoirs in Tahe Oilfield, it is impossible to accurately determine the comprehensive compressibility coefficient of the reservoirs due to the diverse media types, different scales, complex distribution and strong heterogeneity of the fractured-vuggy reservoirs, and the results of the dynamic reserves evaluation of the reservoirs are rather unreliable. Based on the well data of water injection and oil production, the corresponding material balance equations are established for the producers in the reservoirs at elastic flooding stage and water injection-production stage, and the elastic productivity formulas in two stages are developed. With the help of the combined equation group, the dynamic reserves and comprehensive compression factor of the reservoirs are solved, and the reliability of the calculated results is verified by comparing the stability of the calculated results after multiple rounds. The verified comprehensive compression factor of the reservoirs can be used to calculate the dynamic reserves of fractured-vuggy reservoirs. Compared with the conventional empirical value-seeking method with lower reliability, this method can enhance the credibility and accuracy of the dynamic reserves calculated results of the fractured-vuggy reservoirs.

关 键 词：缝洞型油藏 注水替油 物质平衡法 弹性产率 动态储量 综合压缩系数 

分 类 号：TE155[石油与天然气工程—油气勘探]