| 摘要: |
| 针对四川盆地高磨地区碳酸盐岩储层非均质性强、渗透率差异大的特点,分别从酸液含量、储层温度、注酸排量、酸液用量等方面开展了不同类型转向酸导流能力研究。实验结果表明:在相同条件下的高酸含量黏弹性转向酸体系刻蚀岩板形成的酸蚀裂缝导流能力高于低酸含量黏弹性转向酸体系的导流能力；随着酸液含量、储层温度、注酸排量及酸液用量的增加,酸蚀裂缝导流能力增大,但当酸的体积分数大于20%以后,转向酸酸蚀裂缝导流能力增加有限。研究的转向酸导流能力成果在高磨地区开展了现场应用,实现了气井的高导流能力,测试产气量达80.01×104 m3/d。 |
| 关键词: 高磨地区 转向酸 导流能力 强非均质性 露头 |
| DOI：10.3969/j.issn.1007-3426.2021.04.014 |
| 分类号: |
| 基金项目:中国石油西南油气田公司科研项目“强非均质性储层改造转向酸液技术研究”(20180302-06) |
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| Study on diverting acid conductivity of heterogeneous reservoir in Gaomo area |
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Jiang Desheng1,2, Li Xiaoping1, Jiang Kaiwen3, Chen Bo4, Shun Chuan5
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1. Key State Laboratory of Reservoir Geology and Development Engineering, Southwest Petroleum University, Chengdu, Sichuan, China;2. PetroChina Southwest Oil & Gasfield Company, Chengdu, Sichuan, China;3. Materials Branch of PetroChina Southwest Oil & Gasfield Company, Chengdu, Sichuan, China;4. Chongqing Gas District of PetroChina Southwest Oil & Gasfield Company, Chongqing, China;5. Research Institute of Natural Gas Technology, PetroChina Southwest Oil & Gasfield Company, Chengdu, Sichuan, China
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| Abstract: |
| Aiming at the high heterogeneous carbonate reservoir of Gaomo area in Sichuan basin, different types of diverting acid conductivity are studied by acid concentration, reservoir temperature, acid injection displacement, acid consumption and so on. The experimental results show that:the conductivity of acid corrosion fracture formed by viscoelastic diverting acid system with high acid concentration is higher than that of viscoelastic diverting acid system with low acid concentration under the same conditions; with the increase of acid concentration, reservoir temperature, acid injection displacement and acid dosage, the conductivity of acid corrosion fracture increases continuously. But when the acid concentration is greater than 20%, the increase of conductivity of acid corrosion fracture is limited, which can effectively guide the acidizing construction design. The field application is carried out in Gaomo area by using the diversion ability of steering acid, and the high conductivity is realized. The test gas production is 80.01×104 m3/d. |
| Key words: Gaomo area diverting acid diversion capacity strong heterogeneity outcrop |
