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通过在柴油中加入两性高聚物、交联剂、O/W型表面活性剂、增稠剂等组成油基凝胶选堵剂，遇地层水或注入水形成强度很高的凝胶，该凝胶遇水愈加粘稠，强度增大；遇油愈加稀释，强度降低，实践证明可以对油井地层产生分层选择性堵水作用。本文给出了对于不同含水率地层堵剂的作用情况、堵剂中交联剂和表面活性剂的筛选、不同温度对堵剂性能的影响、堵剂的岩心封堵性能及该堵水技术在吉林油田的现场应用效果等。
By adding amphoteric polymer, cross-linking agent, O / W type surfactant and thickener into the diesel oil to form the oil-based gel plugging agent, it forms gels with high strength in formation water or water injection, Gel with water more viscous, increased strength; met more dilute the oil, the strength decreases, the practice proved that the formation of oil well stratified selective water blocking effect. In this paper, the effect of plugging agent in formation with different water content, the screening of crosslinking agent and surfactant in plugging agent, the influence of different temperature on plugging agent, plugging performance of core plug, Jilin Oil Field application effects and so on.