抗盐型滑溜水减阻剂的性能评价

发布时间：2018-01-16 08:24

本文关键词：抗盐型滑溜水减阻剂的性能评价　出处：《油田化学》2017年03期 　论文类型：期刊论文

【摘要】：目前使用的大多数减阻剂抗盐能力无法满足滑溜水高矿化度配液用水的要求。为了获得可用高矿化度水配制的减阻剂,开展了疏水缔合聚合物抗盐型减阻剂GAF-RP的研究,评价了GAF-RP的溶解性、减阻性和抗盐能力等,研究了采用GAF-RP与增效辅剂GAF-2D和黏土稳定剂GAF-16配制的滑溜水体系的减阻性能、防膨性能及对岩心的伤害等,并在吉林某油田进行了现场应用。结果表明,GAF-RP减阻和抗盐效果均好于聚丙烯酰胺类减阻剂,GAF-RP溶解时间短,能在120 s内达到最大减阻率80%;抗盐达25×10~4mg/L,抗氯化钙1000 mg/L;GAF-RP配制的滑溜水体系具有较低的表面张力(27.1 mN/m)以及较高的防膨性能(防膨率大于80%),对岩心基质渗透率损害率小(小于5%);该滑溜水返排液可重复配液,返排液配制体系的减阻性能较好,减阻率为78.2%,压后返排率49.6%,日产油4.3 t,增产效果较好。
[Abstract]:Most of the resistive agents used at present can not meet the requirement of slippery water with high salinity. In order to obtain the drag-reducing agent which can be prepared with high salinity water. The study of hydrophobically associating polymer salt-resistant drag reducing agent (GAF-RP) was carried out, and the solubility, drag reduction and salt resistance of GAF-RP were evaluated. The drag reduction property, anti-swelling property and damage to core of slippery water system made of GAF-RP, synergist GAF-2D and clay stabilizer GAF-16 were studied. The results show that the resistance reduction and salt tolerance of GAF-RP are better than that of polyacrylamide resistive reducer GAF-RP. The results show that the dissolution time of GAF-RP is shorter than that of polyacrylamide. Can reach the maximum drag reduction rate of 80 in 120 s; Salt tolerance was 25 脳 10 ~ (-1) mg / L and calcium chloride resistance was 1000 mg / L; The slippery water system prepared by GAF-RP has lower surface tension (27.1 mn / m) and higher anti-swelling performance (the anti-swelling rate is more than 80%). The permeability damage rate to core matrix is small (less than 5%); The system has good drag reduction rate of 78.2%, 49.6% of back discharge rate after pressure, 4.3 t of oil per day, and better effect of increasing yield.
【作者单位】：四川光亚聚合物化工有限公司;四川丰益油田技术服务有限公司;油气藏地质及开发工程国家重点实验室(西南石油大学);
【基金】：中石油集团公司“重大工程关键技术装备研究与应用”项目“储层改造工作液与关键工具研发”课题(项目编号2013E-3807) 四川省科技厅重点研发项目“多功能环保型页岩气压裂液体系的开发、生产及应用技术研究”(项目编号2017GZ0131)
【分类号】：TE357.12
【正文快照】： 随着非常规油气资源勘探开发的不断发展,大型体积压裂逐渐成为该类油气藏增产改造的主要措施。滑溜水是大型体积压裂过程中主要的压裂液体系。大型体积压裂具有排量大、液量大的特点,要求滑溜水具有低摩阻、低伤害和低成本的特性[1-8]。以往多采用清水配制滑溜水,但随着非常规

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