绿色交联可动凝胶在油田调剖堵水中的应用  

APPLICATION OF GREEN CROSS-LINKED MOVABLE GEL IN OILFIELD PROFILE MODIFICATION AND WATER PLUGGING

作　　者：赖南君[1,2] 梅雪[1] 郭方元[3] 杨海恩[3] 黎晓茸[3] 陈洪涛[3] 

机构地区：[1]西南石油大学化学化工学院 [2]油气藏地质及开发工程国家重点实验室.西南石油大学 [3]长庆油田油气工艺研究院

出　　处：《钻采工艺》2012年第3期36-39,8-9,共4页Drilling & Production Technology

基　　金：国家科技重大专项"低渗透油藏中高含水期综合调整技术(2008ZX05013-005)";西南石油大学课外开放实验项目"可动凝胶绿色交联剂研制与应用(KSZ1009)";长庆油田油气工艺研究院科技项目"王窑区长6油层孔隙-裂缝型油藏调剖潜力研究(10CY1-KF-002)"联合资助

摘　　要：通过室内实验,研制出了一种绿色交联可动凝胶,用于油藏调剖堵水。凝胶主剂为疏水缔合聚合物,浓度为3000mg/L;交联剂是铝离子与柠檬酸根络合而成的柠檬酸铝,络合反应中铝离子与柠檬酸根的最佳摩尔比为1.5:1,加量为140mg/L;缓凝剂为150mg/L的酒石酸钠;稳定剂为800mg/L的硫脲。该绿色交联可动凝胶强度3.12×104mPa·s,成胶时间36h,稳定时间可达160d;适合于中低温油藏调剖堵水,抗盐性较好。室内实验表明,绿色交联可动凝胶具有很强的封堵能力和剖面改善能力。Through laboratory experiments,a green cross-linked movable gel has been developed,which has been used for reservoir profile modification and plugging.The main agent of gel is hydrophobic associating polymer,concentration is 3000mg/L;the cross-linking agent is aluminum citrate from complex of aluminum ion and citric acid root ion.The best molar ratio of aluminum ions and citrate ions is 1.5:1 in complex reaction,the amount is 140mg/L;the retarder is tartaric acid sodium,the amount is 150mg/L;The stabilizer is thiourea,the amount is 800mg/L;The strength of the green cross-linked movable gel is 3.12×104mPa.s,gelling time 36h,Stable time 160d.It is suitable for low-temperature reservoir profile modification,and salt resistance is good.Laboratory experiments showed that the green cross-linked movable gel have strong plugging capacity and improving profile ability.The green cross-linked movable gel has strong three dimensional network structure,which been observed through the environmental scanning electron microscopy.

关 键 词：绿色交联 环境保护 柠檬酸铝 可动凝胶 调剖堵水 封堵 

分 类 号：TE358.3[石油与天然气工程—油气田开发工程]