钻井液与完井液2017，Vol.34Issue(4)：96-100,5.DOI:10.3969/j.issn.1001-5620.2017.04.018
高温携砂酸液体系及其性能评价
A High Temperature Sand Carrying Acid and its Performance Evaluation
摘要
Abstract
Acid fracturing with sand carrying acid has become one of the important measures in carbonate reservoir stimulation. The key to the success of acid fracturing with sand carrying acid is the selection of a high temperature sand carrying acid with good performance. To deal with problems encountered in fracturing, such as shear-breaking of the crosslinked acid by shearing, serious de-acidification, high crosslinking agent consumption and high job cost etc., a new hydrophobically associating thickener (used in acid) and a high performance crosslinking agent have been synthesized, and an optimum crosslinked acid formulation developed with the following composition: 20%HCl+0.8%SRAP-1 (thickener) + 0.8% SRACL(2:10, crosslinking agent) +2%SRAC-1 (high temperature corrosion inhibitor)+0.2%DF-1 (iron ion stabilizer) + 1.0% SRCU-1 (cleanup additive)+0.05% JSP-8 (capsule gel breaker). Laboratory evaluation showed that the crosslinking time of the acid formulation was about 89 s even after substantial decrease in the amount of crosslinking agent, indicating that the acid formulation has good delayed crosslinking ability. After shearing for 2 h at 140 ℃ and 170 s-1, the viscosity of the acid was still greater than 60 mPa·s, and the state of the crosslinking remained stable, no de-acidification was found of the acid. The acid formulation has satisfied the need of field operation, and is worth popularizing.关键词
碳酸盐岩储层/交联酸/酸压/携砂酸液Key words
Carbonate reservoir/Crosslinked acid/Acid fracturing/Sand carrying acid分类
能源科技引用本文复制引用
贾文峰,任倩倩,王旭,姚奕明,蒋廷学,陈作,赵传峰..高温携砂酸液体系及其性能评价[J].钻井液与完井液,2017,34(4):96-100,5.基金项目
中国石化石油工程技术服务有限公司重点项目"多重乳化酸体系研究"(SG16-38K) （SG16-38K）
国家重大科技专项课题 2"彭水地区高效钻井及压裂工程工艺技术优化技术"(2016ZX05061-010) （2016ZX05061-010）
国家自然科学基金重大项目"页岩地层动态随机裂缝控制机理与无水压裂理论"(51490653). （51490653）
