Drilling tool achieving axial impacting through vortex-induced vibration
A technology of axial impact and drilling tools, applied in the direction of vibration drilling, etc., can solve the problems of limited service life and high pressure loss, and achieve the effects of prolonging service life, low tool pressure loss and simplifying the mechanical structure
Active Publication Date: 2017-01-11
广西北部湾粮油技术研究有限公司
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Problems solved by technology
However, traditional percussion tools have high pressure loss and limited service life during normal operation. Therefore, reducing tool pressure loss and improving drilling tool service life are the key technologies for developing new percussion drilling tools.
Method used
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[0016] The present invention will be further described below in conjunction with accompanying drawing:
[0017] See attached figure 1 , a drilling tool that uses vortex-induced vibration to achieve axial impact. The axial impactor is fixedly installed on the upper part of the drill bit through a threaded connection. The front end of the oscillator is connected to the impact joint, and the rear end is connected to the shock absorber; the shock absorber includes a spline shaft 1, a sealing ring a2, a wear-resistant ring 3, a spline shell 4, an upper shell 5, a disc spring 6, and an anti-drop short Section 7, oil plug 8, rectangular sealing ring a9, retaining ring 10, sealing ring b11, sealing ring c12, anti-drop cap 13, and sequentially install the sealing ring a2 and wear-resistant ring 3 on the inner circumference of the rear end of the spline housing 4 , and then install the spline shell 4 on the spline shaft 1, install the disc spring 6 on the front end of the spline shaft ...
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The invention relates to a drilling tool achieving axial impacting through vortex-induced vibration. The drilling tool comprises a vibration reducer, a vortex-induced vibration device and an impacting joint. The front end of the vortex-induced vibration device is connected with the impacting joint, the back end of the vortex-induced vibration device is connected with the vibration reducer, the impacting effect between a drill bit and the tool is relaxed through the impacting joint installed at the front end, and the service life of the tool is prolonged; as vibration generated when the tool works is absorbed through the vibration reducer, it is avoided that vibration is transferred upwards, and normal working of an upper drilling tool is influenced; when slurry flows through a variable resistance short section, vortex-induced vibration is generated, the vortex-induced vibration device generates axial impacting accordingly, and drill bit rock breaking is accelerated. According to the drilling tool achieving axial impacting through vortex-induced vibration, the axial force with the certain frequency is generated through slurry pressure change, other driving devices do not exist, drilling energy can be effectively saved, and efficient rock breaking is achieved.
Description
technical field [0001] The invention relates to a drilling tool used in the field of drilling engineering to realize axial impact by using vortex induced vibration, which is mainly used in oil and gas drilling engineering. Background technique [0002] With the depletion of traditional oil and gas resources, new oil and gas resources such as shale gas and coalbed methane have entered the stage of exploration and production, which makes drilling engineering face a more complex stratum working environment. Strata are also prevalent. On the basis of the existing drilling technology, extended-reach directional well, horizontal well, and branch well technology have also been rapidly developed and applied. Therefore, it is inevitable to develop supporting drilling speed-increasing tools. [0003] When the rock in the drilling formation is hard and the grinding limit is high, it is easy to lead to the situation that a single drill bit has less footage, the life of the drill bit is...
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CPCE21B7/24
Inventor 田家林杨应林杨琳胡书辉蔡旭东杜凡周韬
Owner 广西北部湾粮油技术研究有限公司