高温高盐油藏环氧树脂/酚醛树脂复合堵水调剖剂的性能研究  

Study on Property of Epoxy Resin/Phenolic Resin Compound Water Plugging Profile Modification Agent of High Temperature and High Salt Content Oil Reservoir

作　　者：邓英江[1] 陈大钧[1] 李文涛[1] 万伟[2] 张谦[3] 尧艳[4] 

机构地区：[1]西南石油大学化学化工学院,成都610500 [2]川庆钻探工程有限公司川西钻探公司,成都610000 [3]川庆钻探工程有限公司川东钻探公司,重庆410012 [4]川庆钻探工程有限公司井下作业处,广汉618300

出　　处：《精细石油化工进展》2010年第10期19-22,共4页Advances in Fine Petrochemicals

摘　　要：针对国内高温高盐油藏,使用环氧树脂胶黏剂和酚醛树脂,选择合适的固化剂、增韧剂,制备环氧树脂/酚醛树脂复合调剖体系,确定了复合调剖剂最佳配方:100 g环氧树脂和酚醛树脂混合物(环氧树脂与酚醛树脂质量比为6:4),稀释剂40 mL,固化剂六次甲基四胺0.1%,中试纤维2.0%。对复合调剖体系进行了性能评价,试验结果表明,堵水调剖体系在145℃下养护30 d,抗压强度仍达7.76 MPa;在矿化度160 g/L中养护24 h,7 d后封堵率在96%以上;在145℃下养护时间在2.5 h内,黏度均在1 000 mPa·s内;4 000 min^(-1)搅拌30 min后,黏度下降8.33%,24 h后抗压强度为2.36 MPa;后续水驱中注水量达30 PV时,堵水率基本不变。此复合调剖体系能满足高温高盐油藏堵水调剖的要求。In view of the exploitation of domestic high temperature and high salt content oil reservoir, an epoxy resin/phenolic resin compound water plugging profile modification system was prepared with epoxy resin adhesive and phenolic resin as well as suitable hardener and toughner. The optimum formulation of the com- pound plugging profile modification agent is identified as follows： mixture of epoxy resin and phenolic resin （with the mass ratio of epoxy resin to phenolic resin of 6：4） 100 g, thinner 40 mL, Hexamethylenetetramine hardener 0.1%, pilot test fiber 2.0%. The performance of the compound profile modification system was evaluated. The test results have shown that the compression strength of the water plugging profile modification system was as high as 7.76 MPa after cured for 30 d at 145 ~C. The plugging rate was more than 96% seven days after the curing of the water plugging profile modification system which lasted for 24 h at the salinity of 160 g/L. The viscosity of the system was less than 1 000 mPa. s all the time when the system is cured at 145℃ for 2.5 h. The viscosity of the system dropped by 8.33% after agitated for 30 min at the speed of 4 000 min-I, and the compression strength was 2.36 MPa 24 h later. The water plugging rate remained the same on the whole when water injection volume reached 30 PV in subsequent water flooding operation. This compound water plugging profile modification system can meet the requirements of water shutoff and profile modification for the exploitation of high temperature and high salt content oil reservoir.

关 键 词：环氧树脂 酚醛树脂 调剖 高温高盐 性能评价 

分 类 号：TE39[石油与天然气工程—油气田开发工程]