自振空化射流改善油层特性实验研究及现场应用

doi:10.7623/syxb200601017

石油学报 ›› 2006, Vol. 27 ›› Issue (1): 81-84,88.DOI: 10.7623/syxb200601017

自振空化射流改善油层特性实验研究及现场应用

易灿^1,3, 李根生², 郭春阳¹, 张定国¹

1. 中国石油大学石油工程学院, 山东东营 257061;
2. 中国石油大学, 北京 102249;
3. 中国石油大学石油工程学院, 山东东营 257061

收稿日期:2005-01-20 修回日期:2005-03-30 出版日期:2006-01-25 发布日期:2010-05-21
作者简介:易灿,男,1973年11月生,2001年获石油大学(华东)油气井工程硕士学位,现为中国石油大学(华东)博士研究生,主要从事油气井流体力学方面的研究.E-mail:upcyican@yahoo.com.cn
基金资助:
国家杰出青年科学基金(50125413)和中国石油天然气集团公司中青年创新基金研究项目(04E7034)联合资助.

Laboratory investigation and field application of self-resonating cavitation jet for improving polluted rock permeability

Yi Can^1,3, Li Gensheng², Guo Chunyang¹, Zhang Dingguo¹

1. College of Petroleum Engineering, China University of Petroleum, Dongying 257061, China;
2. China University of Petroleum, Beijing 102249, China;
3. Drilling Technology Research Institute, Shengli Petroleum Administration, Sinopec, Dongying 257017, China

Received:2005-01-20 Revised:2005-03-30 Online:2006-01-25 Published:2010-05-21

摘要/Abstract

摘要： 自振空化射流是具有强烈压力振荡和高空化起始能力的新型射流,利用高压釜装置对围压下自振空化射流提高污染岩渗透率进行的实验研究结果表明,对中、低和高渗透率岩样,空化射流作用深度均超过250mm,渗透率提高率随射流压力的增大而增加,随喷距的增大而减小;当围压值为2MPa时,渗透率提高率达到最大值.同时,在相同条件下,自振空化喷嘴作用下渗透率提高率为锥形喷嘴作用的2倍以上.现场应用效果证明,自振空化射流对解除油层和水层堵塞有明显效果.

关键词: 自振空化射流; 围压; 渗透率; 射流压力; 解堵; 实验研究;

Abstract: Self-resonating cavitation jet is a new type jet with the characteristics of strong pressure oscillation and high-cavitation inception.The effects of working parameters on the improvement of permeability of polluted rock by self-resonating cavitation jets impingement in a high-pressure vessel were investigated.The result shows that the effective depth of cavitation jet on the polluted rocks with different permeability is more than 250 mm.The increasing rate of permeability could be improved with the jet pressure increasing and reduced with the nozzle stand-off distance increasing.Meanwhile,the increasing rate of permeability can reach the maximum at the ambient pressure of 2 MPa.Under the same conditions,the increasing rate resulted from the self-resonating cavitation jet nozzle is two times of that from a conical nozzle.Field applications also showed that the self-resonating cavitation jets have obvious effectiveness on the plug removal of oil and water injection wells.

Key words: self-resonating cavitation jet, ambient pressure, permeability, jet pressure, plug removal, experimental study

中图分类号:

TE355.9

易灿, 李根生, 郭春阳, 张定国. 自振空化射流改善油层特性实验研究及现场应用[J]. 石油学报, 2006, 27(1): 81-84,88.

Yi Can, Li Gensheng, Guo Chunyang, Zhang Dingguo. Laboratory investigation and field application of self-resonating cavitation jet for improving polluted rock permeability[J]. Editorial office of ACTA PETROLEI SINICA, 2006, 27(1): 81-84,88.

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自振空化射流改善油层特性实验研究及现场应用

Laboratory investigation and field application of self-resonating cavitation jet for improving polluted rock permeability

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