引用本文:韩易龙,纪文娟,赵光,沈建新,张志武,秦涛,等. 粘土在高温高盐油藏封堵大孔道的应用研究[J]. 石油与天然气化工, 2011, 40(2): 170-174,100.
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粘土在高温高盐油藏封堵大孔道的应用研究
韩易龙1, 纪文娟2, 赵光2, 沈建新, 张志武, 秦涛, 戴彩丽
1.新疆塔里木油田公司开发事业部;2.中国石油大学重质油国家重点实验室
摘要:
针对高温、高盐油藏地层条件,选用耐温耐盐的粘土体系封堵大孔道。激光粒度仪分析了稳定化钠土的粒径,析水指数法考察了稳定化钠土的分散能力。研究表明,稳定化钠土分散性能好,其粒径不均匀,适合的渗透率范围在3μm2~20μm2,注入性试验验证了此结果。同时,研究了四种稳定化钠土的封堵体系的封堵能力,主要包括粘土分散体系、粘土-超细水泥固化体系、粘土-AM-AMPS共聚物、粘土-酚醛树脂冻胶体系,稳定化钠土-超细水泥固化体系于2009年在孤岛油田现场应用2井次,取得了较好的增油效果。
关键词:  高温高盐  大孔道  调剖  稳定化钠土
DOI：
分类号:TE358
基金项目:山东省杰出青年基金(项目编号JQ201013);中国石油大学(华东)研究生创新基金资助项目(S10-05)
Application Study on Clay Plugging Large Pore Paths in High Temperature and High Salinity Reservoir
Han Yilong1, Ji Wenjuan2, Zhao Guang2
1.Tarim Oilfield Development Department,Kuerle 841000, China;2.State Key Laboratory of Heavy Oil Processing, China University of Petroleum,Qingdao 266555 ,China
Abstract:
Aiming at high temperature and high salinity reservoir, clay is optimized to plug large pore paths. Particle size distribution of stabilizing Na—bentonite is characterized by laser particle analyzer and dispersity by the method of bleeding index. The results show that stabilizing Na—bentonite has good behavior of dispersity.However, it is nonuniform in size, and the adaptive permeability is in a range from 3 to 20tum2, which is proved by injectivity test. Plugging ability and plugging mechanism of clay plugging system are studied, including clay dispersion system, curing system of clay and super—fine cement, floeculation system of clay—AM—AMPS and clay—phenolicresin gel. Curing system of stabilizing Na—bentonite and super—fine cement was successfully applied to two wells in Gudao oilfield in 2009 and achieved good effects.
Key words:  high temperature and high salinity  large pore paths  profile control  stabilizing Na—bentonite