渤海N油田低温油藏复合调驱技术研究与应用  

Research and Application of Compound Profile Control and Flooding Technology in Low Temperature Reservoir at Ultra-high Water Cut Stage of N Oilfield in Bohai

作　　者：苏毅 杨劲舟 鞠野[2] 李建晔 徐国瑞[2] 刘光普[2] SU Yi;YANG Jin-zhou;JU Ye;LI Jian-ye;XV Guo-rui;LIU Guang-pu(CNOOC Tianjin Branch,Tianjin 300452,China;COSL Production Optimization Branch,Tianjin 300450,China)

机构地区：[1]中海石油(中国)有限公司天津分公司,天津300452 [2]中海油田服务股份有限公司油田生产事业部,天津300450

出　　处：《辽宁化工》2021年第7期1001-1004,共4页Liaoning Chemical Industry

摘　　要：低温油藏稳油控水体系种类少、技术不成熟、措施数量少、应用效果差,无法满足油田的实际需求。对目标油藏展开分析,明确主要矛盾,确定通过复合调驱技术,提高体系运移距离及封堵强度,可有效抑制水窜通道,实现深部液流转向,提高水驱开发效果。针对常规凝胶体系在低温下无法成胶的问题,系统地开展了一系列凝胶体系筛选评价实验,重点研究了温度对凝胶成胶反应的影响,最终获得了新型低温延缓交联凝胶体系。优选深部液流转向体系,研发出具有空间网状结构、胶结强度更高的超分子非连续调控剂体系。新型复合调驱技术在N油田完成首次应用,措施后,井组呈现出良好的降水增油效果,日增油70 m^(3),平均含水下降6%,累净增油超过5000 m^(3)并持续有效。Stabilizing oil production and controlling water cut technologies for low temperature reservoirs are immature, measure quantity is small and application effect is poor, which cannot meet the actual needs of oilfield. Through the analysis of the target reservoir, the main contradiction was clarified, and the compound profile and flooding control technology can effectively restrain the water channeling channel, realize the deep liquid flow diversion, and improve the water drive development effect. Aiming at the problem that conventional gel system cannot be glued at low temperature, a series of gel system screening and evaluation experiments were carried out systematically. The effect of temperature on gel gelling reaction was systematically studied. Finally, a new low-temperature delayed crosslinking gel system was obtained. The deep fluid diversion system was optimized to develop a super molecular discontinuous regulator with spatial network structure and higher cementation strength. The new compound profile and flooding control technology has been applied for the first time in oilfield N. After the measure, the well group showed good effect of oil increase. The daily oil production increased by 70 m^(3), the average water cut decreasesd by 6%, and the cumulative oil increase was more than 5 000 m^(3).

关 键 词：低温油藏 稳油控水 复合调驱 室内实验 矿场应用 

分 类 号：TE357[石油与天然气工程—油气田开发工程]