考虑相对渗透率变化的砂岩油藏产量劈分方法  

A Production Splitting Method of Sandstone Reservoir Considering the Change of Relative Permeability

作　　者：李源流 杨兆平[2,3] 潘多寿[4] 岳世俊 刘雄志[2,3] LI Yuanliu;YANG Zhaoping;PAN Duoshou4;YUE Shijun;LIU Xiongzhi(Hengshan Oil Production Plant,Yanchang Oilfield Co.,Ltd.,Yulin,Shaanxi 719100,China;Northwest Branch,PetroChina Research Institute of Petroleum Exploration & Development,Lanzhou,Gansu 730020,China;Key Laboratory of Reservoir Description,CNPC,Lanzhou,Gansu 730020,China;Research Institute of Drilling and Production Engineering,PetroChina Yumen Oilfield Company,Jiuquan,Gansu 735019,China)

机构地区：[1]延长油田股份有限公司横山采油厂,陕西榆林719100 [2]中国石油勘探开发研究院西北分院,甘肃兰州730020 [3]中国石油天然气集团公司油藏描述重点实验室,甘肃兰州730020 [4]中国石油玉门油田分公司钻采工程研究院,甘肃酒泉735019

出　　处：《西安石油大学学报（自然科学版）》2020年第3期72-76,85,共6页Journal of Xi’an Shiyou University（Natural Science Edition）

基　　金：国家重点研发计划“CO2驱油技术及地质封存安全监测”(2018YFB0605500)。

摘　　要：将传统地层系数(KH值)法与油藏的油、水相对渗透率变化相结合,并根据油井生产过程中含水率的变化分为无水采油期和见水采油期,见水采油期根据各小层变化的油、水相对渗透率来劈分多层合采的注水开发砂岩油藏产油量和产水量。研究结果表明:与未考虑动态变化的常规地层系数(KH值)法相比,考虑油水相对渗透率变化的产量劈分结果比KH值劈分的小层产量更加接近产液剖面测试结果,劈分结果和实际生产吻合更好,能够更真实地反映各小层的产出情况。According to the water content of the produced fluid,the production process of oil well can be divided into two stages:anhydrous production stage and water breakthrough production stage.Combining the traditional formation coefficient(KH)method with the change of relative permeability of oil and water in the reservoir,the oil production and water production of all the sublayers are obtained by splitting the oil production and water production of the multi-layer production water-flooding sandstone reservoir according to the change of relative permeability of oil and water in each sublayer in the water breakthrough production stage.The results show that:compared with the conventional formation coefficient(KH value)method which does not consider the dynamic change of oil and water relative permeability,the production split results of each sublayer considering the change of oil-water relative permeability are closer to the test results of the production profile,and can reflect the production of each sublayer more truly.

关 键 词：油井产量劈分 砂岩油藏 油水相对渗透率 地层系数 注水开发 多层合采 

分 类 号：TE328[石油与天然气工程—油气田开发工程]