耐高温栲胶堵剂的研制及油藏适应性评价  

Development and reservoir adaptability evaluation of a high temperature resistant plugging agent:tannin extract

作　　者：刘刚[1] 王俊衡 王丹翎 颜永何[1] 蒋雪峰[1] 王倩[1] LIU Gang;WANG Junheng;WANG Danling;YAN Yonghe;JIANG Xuefeng;WANG Qian(Exploration and Development Research Institute of PetroChina Xinjiang Oilfield Company,Karamay,Xinjiang 834000,China;Southwest Petroleum University,Chengdu,Sichuan 610500,China;Shenzhen Branch of CNOOC(China)Co.,Ltd.,Shenzhen,Guangdong 518054,China)

机构地区：[1]中国石油新疆油田分公司勘探开发研究院,新疆克拉玛依834000 [2]西南石油大学,四川成都610500 [3]中海石油(中国)有限公司深圳分公司,广东深圳518054

出　　处：《油气藏评价与开发》2021年第3期452-458,共7页Petroleum Reservoir Evaluation and Development

基　　金：国家科技重大专项“稠油多介质蒸汽驱技术研究与应用”(2016ZX05012-001);中国石油重大专项“新疆油田浅层稠油稳产提效技术研究与应用”(2017E-04-08)。

摘　　要：稠油油藏蒸汽驱控制汽窜使用的耐高温堵剂存在强度低、老化稳定性差等问题,急需研发新型耐高温堵剂,推进现场应用。针对新疆油田九6区齐古组稠油油藏层间非均质性强导致的蒸汽驱汽窜严重、泡沫驱效果差等生产技术难题,研制出了由磺化栲胶、交联剂和促进剂组成的适用于高温油藏的磺化栲胶堵剂体系。通过静态评价实验,优化出堵剂配方为:0.6%磺化栲胶+(2.0%~2.5%)醛类交联剂Ⅰ+(1.0%~2.0%)酚类交联剂Ⅱ+(0.05%~0.06%)促进剂。油藏适应性评价结果表明:在油藏温度下老化30 d后堵剂强度保持H级以上,堵剂的封堵效率在94%以上,研究成果为克拉玛依油田九6区齐古组稠油油藏控制蒸汽窜技术的现场应用奠定了基础。There are several problems in the high temperature resistant plugging agent used in steam flooding of heavy oil reservoirs to control steam channeling,such as low strength and poor long-term stability.So,it is urgent to develop a new type of high temperature resistant plugging agent to promote on-site application.In order to solve the technical problems caused by strong interlayer heterogeneity of the heavy oil reservoirs in District 9-6 of Qigu Formation in Xinjiang Oilfield,including severe steam channeling and poor foam flooding effects,a plugging agent system suitable for high temperature reservoirs and composed of sulfonated tannin extract,cross-linking agent and accelerant has been developed.By the static evaluation experiment,it is found that the optimized formula of the plugging agent is as follows:0.6%sulfonated tannin extract+(2.0%~2.5%)aldehyde crosslinking agentⅠ+(1.0%~2.0%)phenol cross-linking agentⅡ+(0.05%~0.06%)accelerant.The evaluation of reservoir adaptability shows that the strength of the plugging agent remains above level H after 30 days of aging at the reservoir temperature,and the plugging efficiency is above 94%.It has laid a foundation for the field application of steam channeling control technologies in the heavy oil reservoirs of District 9-6 of Qigu Formation in Karamay Oilfield.

关 键 词：稠油油藏 汽窜 耐高温堵剂 磺化栲胶 油藏适应性评价 

分 类 号：TE39[石油与天然气工程—油气田开发工程]