胶凝酸与交联酸一体化耐高温缓速酸研究

穆代峰; 贾文峰; 姚奕明; 杨琛; 王程程; 贾金亚

doi:10.3969/j.issn.1001-5620.2019.05.019

胶凝酸与交联酸一体化耐高温缓速酸研究

doi: 10.3969/j.issn.1001-5620.2019.05.019

穆代峰^1,2,3,
贾文峰^1,2, ,,
姚奕明^1,2,
杨琛^1,2,3,
王程程^1,2,3,
贾金亚^1,2,3

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)石油工程学院, 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）；国家科技重大专项课题2"彭水地区高效钻井及压裂工程工艺技术优化技术"（2016ZX05061-010）；国家科技重大专项"海相碳酸盐岩超深油气井关键工程技术"（2017ZX05005-005）

详细信息

作者简介:
穆代峰,在读硕士研究生,研究方向为非常规油气。电话15611790981;E-mail:mudaifeng@163.com

通讯作者:
贾文峰,电话(010)84988618

中图分类号: TE357.12
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- 被引次数: 0
出版历程
- 收稿日期: 2019-06-07
- 刊出日期: 2019-10-30

Study on the Integration of Gelled Acid and Crosslinked Acid to Form High Temperature Retarded Acid

MU Daifeng^1,2,3,
JIA Wenfeng^{1,2
, ,},
YAO Yiming^1,2,
YANG Chen^1,2,3,
WANG Chengcheng^1,2,3,
JIA Jinya^1,2,3

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. School of Petroleum Engineering, China University of Petroleum, Beijing 102249

摘要

摘要: 胶凝酸和交联酸是高温碳酸盐岩酸压常用的缓速酸体系，该体系存在耐温能力不足、配伍差等问题，同时现场交联酸和胶凝酸为不同酸液体系，存在配制使用流程繁琐的问题。为解决上述问题，优化形成了一体化酸液体系，交联酸基液可作为胶凝酸使用，加入交联剂作为交联酸使用。交联酸配方为：20%盐酸+1%稠化剂SRAP-2+2.5%高温缓蚀剂主剂SRAI-1+0.5%增效剂+1%酸压用铁离子稳定剂SRAF-1+1%酸压用破乳剂SRAD-1+1%交联剂SRAC-2A和延迟交联剂SRAC-2B（2：12）。胶凝酸在160℃、170 s^-1下，恒温剪切120 min后黏度为20 mPa·s。交联酸体系交联时间为93 s，具有良好的延迟交联特性；在160℃、170 s^-1下恒温剪切90 min后黏度为55 mPa·s，一体化酸液体系室温可放置10 d以上，在140℃动态腐蚀速率为46.1021 g/（m²·h）。研究结果表明，该体系可满足高温储层对缓速酸的要求，实现酸液体系一体化，方便现场施工，具有较好的发展前景。
- 酸化压裂 /
- 碳酸盐岩储层 /
- 耐高温缓速酸 /
- 胶凝酸 /
- 交联酸 /
- 一体化
Abstract: Gelled acid and crosslinked acid are common retarded acids used in acidizing high temperature carbonate rock reservoirs. As different acids, gelled acid and crosslinked acid both have poor high temperature tolerance, poor compatibility with each other and complex formulating and working procedures. To resolve these problems, a retarded acid has been formulated through integration of gelled acid and crosslinked acid. The base fluid of the crosslinked acid can be used as a gelled acid which can be turned into crosslinked acid by adding crosslinking agents. The composition of the crosslinked acid is:20%HCl+1%SRAP-2 (thickening agent)+ 2.5%SRAI-1 (high temperature primary corrosion inhibitor)+0.5% extender+1%SRAF-1(ferric ion stabilizer for acid fracturing)+1% SRAD-1 (demulsifier for acid fracturing)+1% SRAC-2A (crosslinking agent) and SRAC-2B (delayed crosslinking agent) (SRAC-2A:SRAC-2B=2:12). After shearing at 160℃ and 170 s^-1 for 120 min, the viscosity of the gelled acid was 20 mPa·s. Time for the crosslinking of the crosslinked acid was 93 s, indicating that the crosslinked acid had excellent delayed crosslinking property. After shearing at 160℃ and 170 s^-1 for 90 min, the viscosity of the crosslinked acid was 55 mPa·s. This integrated acid can stand at room temperatures for more than 10 d, and the dynamic rate of corrosion at 140℃ was 46.1021 g/(m²·h). Research work shows that this integrated acid is able to satisfy the needs for retarded acid in acid fracturing high temperature reservoirs. Integration of gelled acid and crosslinked acid simplifies field operation, and should have good application prospects.
- Acid fracturing /
- Carbonate rock reservoir /
- High temperature retarded acid /
- Gelling acid /
- Crosslinked acid /
- Integration

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参考文献(9)

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