应用聚合物数值模拟方法评价井间动态连通性

Evaluation of inter-well dynamic connectivity based on polymer numerical simulation

喻秋兰¹ 刘斌¹ 刘春志² 张雪松¹ 张鑫¹

中海石油（中国）有限公司天津分公司，天津 300459 中海油能源发展股份有限公司工程技术分公司，天津 300459）

Tianjin Branch of CNOOC Ltd., Tianjin 300459, China Engineering Technology Company, Energy Resources Development Co. Ltd., CNOOC Ltd., Tianjin 300459, China)

 海上油田示踪剂测试成本高、测试资料少，应用示踪剂产出曲线评价井间动态连通性较为困难。根据现场监测获得的产出聚合物数据，结合数值模拟技术进行产出聚合物敏感性分析，并在此基础上对单井聚合物产出曲线拟合，利用CMG数值模拟软件的多组分定义功能实现了聚合物产出方向的识别及产出量的劈分。应用该方法评价了L油田A10注聚井组的井间动态连通性，并根据井间连通情况，提出了相应调整对策。应用结果表明：注水井A10与生产井A44井间见聚速度快、产出聚合物多，存在优势渗流通道，再结合生产井A44产液剖面测试结果，建议对A10井调剖、A44井卡水，预计措施实施后A44井产量翻番，增油降水效果明显。

 Due to the high cost and less test data for offshore oil field tracer test, evaluation of the dynamic connectivity between wells by using the tracer production curve is not feasible. Based on the polymer output data obtained by field monitoring, the polymer simulation technology is used to analyze polymer output sensitivity and develop the polymer output curve matching. The multi-component definition function of CMG simulation software is used to achieve the split of polymer output for more injection wells, by which the dynamic connectivity between wells of A10 polymer injection group of L Oilfield was evaluated using the simulation results. The results show that polymer breakthrough speed is faster and the polymer output is much between A10 and A44 wells, so there may be advantage seepage channel. Combined with the A44 well′s production profile test results, it is recommended that the A10 well′s injection profile should be adjusted and the A44 well′s high water cut zone is shut, which will double the A44 well′s production, obviously increase oil and decrease water.

10.6056/dkyqt201706020