抗剪切耐盐无机铝凝胶深部调剖剂研究  

Experimental study on shearing and salt tolerant deep profile control agents composed of inorganic aluminum gel

作　　者：王苹[1,2] 戴彩丽[1] 由庆[3] 赵光[1] 孟凡宾[4] 袁小华[4] 

机构地区：[1]中国石油大学(华东)重质油国家重点实验室,山东青岛266580 [2]中国石化胜利油田分公司滨南采油厂,山东滨州256600 [3]北京大学石油天然气研究中心,北京100871 [4]中国石油新疆油田分公司陆梁油田作业区,新疆克拉玛依834000

出　　处：《油气地质与采收率》2013年第6期100-103,118,共4页Petroleum Geology and Recovery Efficiency

基　　金：国家自然科学基金"锆冻胶分散体的制备;表征及其在多孔介质中的运移规律的研究"(51174221);山东省杰出青年基金"提高采收率与采油化学"(JQ201013)

摘　　要：针对有机凝胶抗剪切性和耐盐性差的问题,采用无水氯化铝与活化剂尿素制备了一种抗剪切、耐盐的无机铝凝胶深部调剖剂.室内实验考察了质量浓度、温度、矿化度对铝凝胶胶凝时间的影响,并采用物理模拟实验从注入性能、封堵性能和耐冲刷性能3个方面对无机铝凝胶的应用性能进行了评价.研究结果表明：无机铝凝胶的胶凝时间为16～824 h,且可调,温度对无机铝凝胶的胶凝时间的影响较大,当温度小于80℃时,无机铝凝胶的热稳定性较好;矿化度（包括Na＋,Mg2＋和Ca2＋）及剪切时间对无机铝凝胶的胶凝时间的影响较小,具有较高的耐盐、抗剪切能力;物理模拟实验结果表明,无机铝凝胶具有较好的注入性能、封堵性能和耐冲刷性能,封堵率在98％以上,能够满足80℃以下油藏深部调堵的需要.Aiming at the problem of poor shear performance and salt tolerance of organogel, the deep anti-shearing and salt tolerant profile control agent is composed using anhydrous aluminum chloride and urea. The gelling behavior of the deep profile control agents is studied in this paper. The effects of concentration, temperature, and salinity on the gelling law are investigated. The application performances of the profile control agents, including the injectivity, plugging ability, and flushing resistance are evaluated. The results show that both the concentration and the temperature have great influence on the gelation time, and the gelation time can be adjusted from 16 to 824 h by adjusting the concentration of anhydrous aluminum chloride and urea. The inorganic salts including Na+,Mg2+,and Ca2+have little effect on the gelation time. The salt tolerance, anti-shearing injectivity, plugging ability and flushing resistance of the gel system are very good, and the temperature limit is high as 80 ℃.

关 键 词：无机铝凝胶 耐盐 抗剪切 无水氯化铝 尿素 深部调剖 

分 类 号：TE341[石油与天然气工程—油气田开发工程]