特低渗透油藏聚合物微球2.0驱油技术研究与应用  

Research and application of polymer microsphere 2.0 oil displacement technology in ultra-low permeability reservoirs

作　　者：杨金峰 卢富强 张道法 李曼平 辛萌 杨飞涛 赵艳艳 YANG Jinfeng;LU Fuqiang;ZHANG Daofa;LI Manping;XIN Meng;YANG Feitao;ZHAO Yanyan(Oil Production Plant 5 of PetroChina Changqing Oilfield Company,Xi'an Shaanxi 710200,China)

机构地区：[1]中国石油长庆油田分公司第五采油厂,陕西西安710200

出　　处：《石油化工应用》2024年第6期39-42,共4页Petrochemical Industry Application

摘　　要：随着水驱开发的不断深入,优势窜流通道、剩余油分布日渐复杂,聚合物微球长周期注入后持续深部移动、进一步扩大波及体积作用有限,继续提升调驱效果难度大,需要尽快优化升级现有聚合物微球。本文在聚合物微球Ⅰ代产品的基础上进行优化升级,设计出具有延迟溶胀性的聚合物微球2.0,通过开展室内评价和5个井组现场应用,成功实现了聚合物微球结构的时序性演化,开发出具有延迟膨胀功能的聚合物微球2.0。该体系耐温性达到80℃以上、抗盐性达100000 mg/L以上,相比Ⅰ代体系,延迟膨胀时间提升3倍左右,有效解决了微孔细喉条件下持续深部运移的技术难题。With the deepening of the development of water flooding,the distribution of dominant channeling channels and residual oil is becoming more and more complex,and the polymer microsphere continues to move deep after long-term injection and further expands the affected volume,which makes it difficult to continue to improve the flooding effect,and it is necessary to optimize and upgrade the existing polymer microsphere as soon as possible.In this paper,the polymer microsphere 2.0 with delayed swelling was designed on the basis of the polymer microsphereⅠgeneration product,and the temporal evolution of the polymer microsphere structure was successfully realized through laboratory evaluation and field application in five well groups,and the polymer microsphere 2.0 with delayed expansion function was developed.The temperature resistance of the system reaches more than 80℃and the salt resistance reaches more than 100000 mg/L,which is about 3 times higher than that of theⅠgeneration system,which effectively solves the technical problem of continuous deep migration under the condition of microporous fine throat.

关 键 词：聚合物微球 延迟膨胀 驱油技术 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程]