作　　者： ; ; ; ; ;

机构地区： 陕西科技大学化学与化工学院教育部轻化工助剂化学与技术重点实验室

出　　处： 《油田化学》 2011年第3期314-317,322,共5页

摘　　要： 制备了一种针对酸性压裂液体系的高温延缓型有机锆交联剂ZOC-1,考察了合成工艺中不同因素对ZOC-1性能的影响,确定了ZOC-1的最佳合成工艺:氧氯化锆5%,配体20%,水、甘油质量比0.3,pH值2～3,反应温度50～55℃,反应时间4～5 h。将羧甲基瓜尔胶溶液与ZOC-1按质量比100∶0.3交联,交联时间为50～92 s,压裂液耐温性可达100℃。在100℃、170 1/s下连续剪切60 min,冻胶表观黏度可保持在80～90 mPa.s。携砂比为35%时,压裂液的沉降速度为0.285 cm/min。破胶液黏度最大值为4.8 mPa.s,且对储层伤害小,适用于100℃以下超低渗透油气田施工要求。 A type of zirconium-organic cross-linking agent,ZOC-1,with excellent temperature resistance and delaying performance was prepared for acid fracturing fluid system.The factors influencing on the synthetic process of ZOC-1 were investigated and the optimum condition was obtained as follows： 5% zirconium oxychloride,20% ligands,a combination of water and glycerin in mass ratio 0.3,2—3 pH value,50—55℃ reaction temperature,4—5 h reaction time.Carboxymethyl guar gum solution reacted with ZOC-1 in mass ratio 100∶ 0.3 with cross-linking time 50—92 s and the temperature resistance of the fracturing fluid reached to 100℃.The viscosity of gel fluid maintained in range 80—90 mPa · s at 100 ℃ and 170 1/s with shearing time 60 min.The static sand-carrying speed was of 0.285 cm/min when the sand-carrying ratio was of 35%.The biggest viscosity of broken fluid was of 4.8 mPa · s,which had low damage to the reservoir and could satisfy the fracturing operation requirement for the reservoirs below 100℃.

关 键 词： 酸性压裂液 有机锆交联剂 性能评价

领　　域： [石油与天然气工程] [石油与天然气工程]