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| 超临界二氧化碳粒子射流破岩性能分析 |
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杜玉昆1,2,陈晓红2,3,王瑞和1,岳伟民4,杜强5,白殿刚5,郝国亮6,周艳7
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(1.中国石油大学(华东)石油工程学院,山东青岛 266580;2.海洋国家实验室海洋矿产资源评价与探测技术功能实验室,山东青岛 266071;3.中国石油大学(华东)地球科学与技术学院,山东青岛 266580;4.北京探矿工程研究所,北京100083;5.大港油田滩海开发公司,天津 300280;6.辽河油田欢喜岭采油厂,辽宁盘锦124114;7.辽河油田勘探开发研究院,辽宁盘锦 124010)
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| 摘要: |
| 由于页岩和致密砂岩等非常规储层岩石的破岩门限压力大,为充分发挥超临界二氧化碳在开发非常规资源方面的技术优势,提出引入粒子后形成超临界二氧化碳粒子射流,提高射流的破岩效率。在优化超临界二氧化碳射流破岩实验流程的基础上,研制超临界二氧化碳粒子射流破岩实验装置,分析超临界二氧化碳粒子射流的破岩性能。结果表明:相对于纯超临界二氧化碳射流,加入石英砂30 s后超临界二氧化碳粒子射流的破岩性能得到大幅度增强,破岩体积提高了66.67％;超临界二氧化碳粒子射流的破岩性能随着喷嘴直径和喷距的增大先增强后减弱;本试验条件下最优喷嘴直径为3 mm、喷距为6 mm,粒径为0.3～0.5 mm;压力和温度越高,射流的破岩性能越强,但增强的趋势逐渐变缓。 |
| 关键词: 超临界二氧化碳 粒子 射流 破岩 |
| DOI：10.3969/j.issn.1673-5005.2019.02.010 |
| 分类号::TE 248 |
| 文献标识码:A |
| 基金项目:山东省自然科学基金项目(ZR201807080220)；中央高校基本科研业务费专项(18CX02072A)；国家自然科学基金项目(51404287) |
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| Analysis on rock-breaking property of supercritical carbon dioxide particles jet |
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DU Yukun1,2, CHEN Xiaohong2,3, WANG Ruihe1, YUE Weimin4, DU Qiang5, BAI Diangang5, HAO Guoliang6, ZHOU Yan7
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(1.School of Petroleum Engineering in China University of Petroleum(East China), Qingdao 266580, China;2.Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Scienceand Technology, Qingdao 266071, China;3.School of Geosciences in China University of Petroleum(East China), Qingdao 266580, China;4.Beijing Institute of Exploration Engineering, Beijing 100083, China;5.Seabeach Development Company, Dagang Oilfield, Tianjin 300280, China;6.Huanxiling Oil Production Plant, Liaohe Oilfield, Panjin 124114, China;7.Exploration and Development Research Institute, Liaohe Oilfield, Panjin 124010, China)
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| Abstract: |
| Because the rock-breaking threshold pressure of most unconventional reservoir rocks such as shale and tight sandstone are very high, the supercritical carbon dioxide particles jet are formed by adding the particles into jet in order to improve the rock-breaking efficiency and take full advantage of supercritical carbon dioxide. On the basis of the optimization of the supercritical carbon dioxide jet rock-breaking experimental process, a supercritical carbon dioxide particles jet rock-breaking experimental device was built, and the rock-breaking property of the supercritical carbon dioxide particles jet was analyzed. It is found that the rock-breaking property of the supercritical carbon dioxide particles jet is greatly enhanced by 66.67％ after adding quartz particles in 30 s compared with the pure supercritical carbon dioxide jet. Also, the rock-breaking property of supercritical carbon dioxide particles jet first enhances and then weakens with the increase of nozzle diameter and standoff distance. It is determined that the optimal nozzle diameter is 3 mm, standoff distance is 6 mm and quartz sand with particle size is 0.3-0.5 mm, which are determined under the experimental condition. The higher the jet pressure and temperature is, the stronger the rock-breaking property of the jet will be obtained. However, the increasing trend slows down gradually. |
| Key words: supercritical carbon dioxide particles jet rock-breaking |
