| 摘要: |
| 经济、环保、髙效的消泡技术是泡沫钻井液循环利用的基础，基于该认识，提出自激振荡脉冲消泡技术。将数 值模拟和忒验研究相结合，分析自激振荡脉冲消泡的机制，探索消泡器件能的优化方法。采用正交试验法,优选自 激振荡脉冲消泡器的结构参数。结果表明:自激振荡腔内能够形成显著的涡量扰动,激发局部负压和强烈湍流协同 作用,致使泡沫破裂；自激振荡脉冲腔室内最大负压的绝对值和最大湍流强度均与消泡效率呈显著的指数相关，证 实了自激振荡脉冲消泡机制;数值计算与试验结果吻合良好，提出的消泡技术可行。 |
| 关键词: A激振荡 脉冲射流 消泡 数值模拟 试验研究 |
| DOI：10.3969/j.issn.1673-5005.2012.02.020 |
| 分类号:TE 245 |
| 基金项目:国家自然科学基金项目(51174227);闰家“973”重点萃础研究发展计划课题<2010CB226703) |
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| Menchanism analysis and performance optimization on self-excited oscillation pulse foam breaking device |
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NI Hong-jian1,WANG Chuan-wei2,ANWAR3,WANG Rui-he1,WANG Jian-jun4
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(1. School of Petroleum Engineering in China University of Petroleum, Qingdao 266580, China;2. Shengli Drilling Engineering and Technology Company, Shengli Petroleum Administrative Bureau, Dongying 257064, China;3. Xiryiang Oilfield Downhole Operation Company, Karamay 834000, China;4. College of Chemical Engineering in China University of Petroleum, Qingdao 266580, China)
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| Abstract: |
| Economical，environmental and efficient anlifoaming technology is the basis for achievement of foam drilling fluid recycling. Self-excited oscillation pulse foam breaking technology was proposed based on this. By combination of simulation anti experiments, self-excited oscillation pulse foam breaking principle was analyzed, and defoaming optimization method was explored. According to orthogonal test, the structure parameters of stelf-excited ow:iUation pulse deformer were optimized. The results show that vorticity disturbance can obviously generate and stimulate local vacuum and strong turbulence in self-excited oscillation cavityt which can break foams. The maximum negative value (absolute value) and maximum turbulence intensity in self-excited oscillation cavity were significantly index correlated with defoaming efilciency. The consistence between numerical and experimental results demonstrates that the methods used to analyze self-excited oscillation pulse properties and to optimize deformer structure are feasible. |
| Key words: self-excited oscillation pul?e jet foam breaking numerical simulation experimental research |
