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Continuous axial impact rock breaking hammer

An axial impact and rock-breaking technology, which is applied in the direction of drilling equipment, earthwork drilling, and rotary combined drilling drive devices, can solve the problems of short service life, long structure, small impact force, etc., and achieve short overall length, The effect of high life and reasonable structure

Active Publication Date: 2021-04-09
盘锦卓汇钻井技术开发有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It overcomes the shortcomings of the existing impact tool structure that is too long, which affects the control of the wellbore trajectory, the impact force is small, and the service life is short

Method used

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  • Continuous axial impact rock breaking hammer
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  • Continuous axial impact rock breaking hammer

Examples

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Embodiment Construction

[0044] Such as figure 1 , figure 2As shown, a continuous axial impact rock breaking hammer includes a casing 1, the upper end of the casing 1 is designed with a male joint; the upper end of the casing 1 is provided with a bearing shaft 16, and the upper end of the bearing shaft 16 is fitted with a stator top ring 7, and the stator top top The ring 7 is fixed on the inner wall of the housing 1, the rotor lock nut 3 is set in the middle of the bearing shaft 16 and is sealed with the bearing shaft 16, the bearing string 18 is placed at the lower end of the rotor lock nut 3 and is set on the bearing shaft 16, and the inside of the rotor The sleeve 4 is set on the outer side of the bearing string 18, and the outer wall of the rotor inner sleeve 4 is axially and sequentially equipped with a plurality of turbine rotors 6, and the rotor lock nut 3 is threaded on the upper end of the rotor inner sleeve 4 and compresses the turbine rotor 6. The turbine stator 5 is installed on the out...

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Abstract

The invention relates to the technical field of oil field drilling development, and particularly relates to a continuous axial impact rock breaking hammer. A bearing shaft is arranged in the upper end of a shell of the device; the upper end of the bearing shaft is sleeved with a stator upper top ring; the stator upper top ring is fixed to the inner wall of the shell; the middle of the bearing shaft is sleeved with a rotor locking nut; the rotor locking nut and the bearing shaft are sealed; and a bearing is arranged at the lower end of the rotor locking nut in series and arranged on the bearing shaft in a sleeving manner. On the premise that borehole track control is not affected, the rock breaking efficiency of various drill bits can be improved, the structure is reasonable, the overall length is small, borehole track control is not affected, controllable pressure pulse waves can be generated, the frequency is high, high-frequency impact on the drill bits can be achieved, the hammer is directly connected with the drill bits, impact force directly acts on drill bit bodies, no energy loss exists in the middle, the impact force can be adjusted, the service life of the whole hammer is long, no quick-wear part exists, the continuous work time is long, reliability is high, and installation is convenient.

Description

Technical field: [0001] The invention relates to the technical field of oil field drilling and development, in particular to a continuous axial impact rock breaking hammer. Background technique: [0002] Since the mid-1980s, using the method of "impact rock breaking" to improve the drilling speed of oil and gas has become a research hotspot of drilling speed. Several "hydraulic rotary tools" with similar principles have been born successively. The core technical connotation is to use a set of special "cross-reversing mechanism" or "self-excited pulse generator" to let the drilling fluid flow in the water of the drill pipe. In the hole, continuous pressure fluctuations are generated, thereby forming a continuous vibration force above the drill bit, so that the drill bit impacts the formation while rotating, achieving the purpose of efficiently breaking rocks. However, since the key components of these tools are subjected to the high-speed erosion of drilling fluid, the servi...

Claims

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Application Information

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IPC IPC(8): E21B6/00E21B10/36E21B10/43
CPCE21B6/00E21B10/36E21B10/43
Inventor 李永和
Owner 盘锦卓汇钻井技术开发有限责任公司
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