摘要
针对渤海南部垦利区域多层合采油藏层间干扰大,油田层间干扰定量表征困难,油田单井实际产能与ODP产能差异较大的问题,利用油田测井数据,建立比采油指数与电阻率相关数学模型,求取理想比采油指数。考虑不同含水引入无因次采油指数,从而求得全生命周期理论比采油指数,进一步建立层间干扰校正系数的数学模型。将研究成果应用于渤南垦利区域调整井,产能预测与实际数据误差仅为2%。指导油田细分层系开发,重新部署井网,日增油240 m^3/d。研究成果对渤南垦利区域产能评价、调整井研究、产液结构调整具有指导意义。
The interlayer interference of multi-layer commingled oil reservoirs in Kenli area in southern Bohai Sea is strong and can be hardly characterized quantitatively,and actual single well productivity is more different from ODP productivity.In order to solve these problems,a mathematical model for the correlation between productivity index and electric resistivity was established on the basis of oilfield logging data to calculate the ideal specific productivity index.Then,considering different water cuts,dimensionless productivity index was introduced to obtain specific productivity index of life-cycle theory and to establish the mathematical model for interlayer interference correction factor.The research results are applied to the adjustment wells in Kenli area in southern Bohai Sea.The error between the predicted productivity and the actual value is only 2%.They are used to guide the development of subdivided layers and the rearrangement of well patterns.As a result,daily incremental oil is 240 m 3/d.In conclusion,the research results can be used as the guidance for productivity evaluation,adjustment well investigation and liquid producing structure adjustment in Kenli area,southern Bohai Sea.
作者
蔡晖
阳晓燕
张占华
黄琴
程大勇
Cai Hui;Yang Xiaoyan;Zhang Zhanhua;Huang Qin;Cheng Dayong(CNOOC China Limited Tianjin Branch,Tianjin 300459,China)
出处
《特种油气藏》
CAS
CSCD
北大核心
2018年第4期91-94,共4页
Special Oil & Gas Reservoirs
基金
中海石油(中国)有限公司综合科研项目"渤海双高油田挖潜关键技术研究"(YXKY-2018-TJ-04)
关键词
层间干扰校正系数
电阻率
比采油指数
产液结构调整
渤南垦利区域
interlayer interference correction coefficient
electric resistivity
specific productivity index(SPI)
liquid producing structure adjustment
Kenli area in southern Bohai Sea
