摘要
射流式液动锤由于其具有钻进效率高、钻进深度不受限制等优点被成功应用于油气钻井领域。然而由于射流元件在复杂受力条件下极易破损,严重制约了射流式液动锤的使用寿命。为解决此问题,对射流式液动锤射流元件受力情况进行了数值模拟分析,通过分析射流元件内部应力场分布情况,得出了射流元件破损机理,并设计了新型两体式射流元件。模拟分析研究表明,采用新型两体式射流元件可将元件内最大应力值降低一个数量级,使射流元件受力情况明显改善,可有效地提高其使用寿命。
Liquid-jet hammer have been successfully used in oil and gas drilling production for its high penetration rate and unlimited drilling depth. However,the damage of the bi-stable fluidic amplifier caused by complex stress has limited the working life of the liquid-jet hammer. In order to improving the performance of the liquid-jet hammer,the distribution of stresses in the bi-stable fluidic amplifier was studied by computation and the optimized structures of the bi-stable fluidic amplifier were proposed. Computational study results show that the optimized bi-stable fluidic amplifier can reduce the maximum stress one order of magnitude to improve stress situation obviously with longer service life.
出处
《探矿工程（岩土钻掘工程）》
2016年第6期52-55,共4页
Exploration Engineering:Rock & Soil Drilling and Tunneling
基金
国土资源部公益性行业科研专项"干热岩快速钻井用高压高能射流式液动锤研究"(编号:201311112)
关键词
射流式液动锤
射流元件
结构优化
liquid-jet hammer
bi-stable fluidic amplifier
structure optimization
