特种油气藏2012，Vol.19Issue(5)：128-130,3.DOI:10.3969/j.issn.1006-6535.2012.05.032
水力脉冲空化射流技术首次在煤层气井中的试验研究
First Experimental Study on Hydraulic Pulse Cavitating Jet in Coal Bed Gas
摘要
Abstract
In order to improve the rate of penetration ( ROP,in short) ,shorten the period of drilling and save drilling costs in coal bed gas well drilling,ROP is raised by improving flow field at well bottom,reducing the crushing strength of rock and the chip -hold - down effect based on the principle of hydraulic pulse cavitating jet drilling technology. The technology has undergone field test in Well Zhi 4. The results of the field test show that the technology in the experiments doesn' t need to change the original downhole assembly,there are no special requirements to bits and drilling parameters,can be effectively applied to coal bed gas well drilling and average ROP in this field test is increased by 100. 7% compared with drilling the same horizon of the adjacent wells under the same down hole assembly and similar parameters.关键词
水力脉冲/空化射流/煤层气井/机械钻速/现场试验Key words
hydraulic pulse/cavitating jet/coal bed gas well/ROP/field test分类
能源科技引用本文复制引用
王伟,李根生,史怀忠,辛建华..水力脉冲空化射流技术首次在煤层气井中的试验研究[J].特种油气藏,2012,19(5):128-130,3.基金项目
国家重点基础研究发展计划项目"973"计划子课题"深井复杂地层安全高效钻井基础研究"(2010CB226700) （2010CB226700）
中石化石油工程先导和推广项目"水力脉冲空化射流钻井技术应用跟踪"(SG1008) （SG1008）
