高温携砂酸液体系及其性能评价

贾文峰; 任倩倩; 王旭; 姚奕明; 蒋廷学; 陈作; 赵传峰

doi:10.3969/j.issn.1001-5620.2017.04.018

高温携砂酸液体系及其性能评价

doi: 10.3969/j.issn.1001-5620.2017.04.018

贾文峰^1,2,
任倩倩^1,2,3,
王旭^1,2,3,
姚奕明^1,2,
蒋廷学^1,2,
陈作^1,2,
赵传峰³

1. 页岩油气富集机理与有效开发国家重点实验室, 北京 100101;
2. 中国石化石油工程技术研究院, 北京 100101;
3. 中国石油大学北京(北京), 北京 102249

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）；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）；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）。

详细信息

作者简介:
贾文峰,副研究员,现在主要从事油田化学助剂研发。电话13426238183;E-mail:jiawf@iccas.ac.cn。

中图分类号: TE357.12
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出版历程
- 收稿日期: 2017-04-13
- 刊出日期: 2017-07-31

A High Temperature Sand Carrying Acid and its Performance Evaluation

1. State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development, Beijing 100101;
2. Sinopec Research Institute of Petroleum Engineering, Beijing 100101;
3. China University of Petroleum, Beijing 102249

摘要

摘要: 携砂酸压已经成为碳酸盐岩地层储层改造的重要措施之一，而实现携砂酸压的关键问题是选择性能良好的耐高温可携砂酸液体系。针对目前国内外交联酸液体系剪切变碎、脱酸严重、交联剂用量大、成本高等问题，通过设计合成了新型酸用疏水缔合稠化剂和高效交联剂，优选出了最佳交联酸体系配方，并对该体系进行综合性能评价室内实验。具体配方为20%盐酸+0.8%稠化剂SRAP-1+0.8%交联剂SRACL（2：10）+2%高温缓蚀剂SRAC-1+0.2%铁离子稳定剂DF-1+1.0%助排剂SRCU-1+0.05%胶囊破胶剂JSP-8。综合性能评价结果表明，在大幅度降低交联剂用量的同时，该体系交联时间为89 s左右，具有良好的延迟交联特性；在140℃、170 s^-1条件下恒温剪切2 h后黏度仍大于60 mPa·s，且交联状态仍然良好，无脱酸现象，完全满足现场施工要求，有很好的推广意义。
- 碳酸盐岩储层 /
- 交联酸 /
- 酸压 /
- 携砂酸液
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 deacidification, 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.
- Carbonate reservoir /
- Crosslinked acid /
- Acid fracturing /
- Sand carrying acid

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参考文献(12)

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