| 摘要: |
| 介绍了一种新型智能控制释放的固体酸SRA-1,该酸中固体盐酸GS-1的有效质量分数可达到85%以上。研究了携带液HCl浓度、矿化度、黏度、温度和时间对SRA-1释放性能的影响。结果 表明:NaCl对SRA-1的酸释放无明显影响；当携带液HCl的质量分数在12%以上、稠化剂质量分数为0.5‰时,135 ℃下稳定0.5 h后,SRA-1基本不释放；当携带液HCl的质量分数为10%、稠化剂质量分数为0.5‰时,135 ℃下稳定1 h后,SRA-1中GS-1保留率仍在50%以上。因此,SRA-1是一种非常具有潜力、可用于储层深度改造的酸材料。 |
| 关键词: 智能控制 延迟释放 储层改造 深度酸化 固体酸 |
| DOI：10.3969/j.issn.1007-3426.2019.01.015 |
| 分类号: |
| 基金项目:国家科技重大专项“缝洞型油藏堵调及靶向酸压工艺技术”(2016ZX05014-005) |
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| Study on release of smart controlled solid acid SRA-1 |
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Li Lan1, Luo Zhifeng2, Yan Yujie1, Liu Weidong3, Li Yongshou1, Wang Peng4
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1. Engineering Technology Research Institute of Sinopec Northwest Oil Field Branch, Urumqi, Xinjiang, China; 2.State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation of Southwest Petroleum University, Chengdu, Sichuan, China;3. Karamay Fucheng Energy Company, Karamay, Xinjiang, China;4. The First Oil Production Plant, PetroChina Xinjiang Oilfield Company, Karamay, Xinjiang, China
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| Abstract: |
| This paper introduces a new solid acid (SRA-1) which can be released through intelligent control. Over 85% content of the SRA-1 is solid hydrochloric acid (GS-1), which is measured by acid-base titration. The impacts of acid concentration, salinity, viscosity, temperature and time on SRA-1 release performance are studied. The results indicate that NaCl has no obvious influence on the SRA-1 release performance, and the SRA-1 can not release in half an hour with the conditions of over 12 wt% HCl, 0.5‰ thickener and 135 ℃. With the conditions of 10 wt% HCl, 0.5‰ thickener, and running for an hour at 135 ℃, the GS-1 retention rate of SRA-1 will maintain over 50%. So the SRA-1 is a potential material which can be used for reform in deep reservoir. |
| Key words: smart control delayed release reservoir reform deep acidification solid acid |
