A hydraulic pulsation percussion drilling device
A technology of pulsating impact and percussion drilling, which is applied to driving devices for drilling in wellbore, percussion drilling, drilling equipment, etc., can solve the problems of low drilling efficiency and rapid failure of drilling tools.
Active Publication Date: 2019-12-24
SOUTHWEST PETROLEUM UNIV
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Problems solved by technology
[0003] In view of the problems of fast failure of drilling tools and low drilling efficiency in deep formations, impact rock breaking is generally used in drilling sites
Method used
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Embodiment Construction
[0019] The present invention will be further described below in conjunction with the accompanying drawings.
[0020] Such as Figure 1-Figure 9 As shown, a hydraulic pulsation percussion drilling device is mainly composed of a base 1, a static valve 2, a dynamic valve 3, a casing 4, a mandrel 5, a drum 6, a turbine stator 7, a turbine rotor 8, a tie rod 9, and a support The cap 10, the support sleeve 11 and the bearing 12 are characterized in that: the base 1 and the housing 4, the support sleeve 11 and the housing 4, the support cap 10 and the pull rod 9, the pull rod 9 and the drum 6, and the mandrel 5 It is connected with the drum 6, the moving valve 3 and the mandrel 5, the static valve 2 and the base 1 through threads; The cylinder at the upper end of the base 1 is provided with a radial fan-shaped through hole; the static valve 2 is fixed on the inner wall of the base 1, and the center of the static valve 2 is provided with a through hole along the axial direction, and ...
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The invention discloses a hydraulic pulse percussion drilling device, which mainly comprises a base, a static valve, a moving valve, a shell, a mandrel, a rotating barrel, a turbine stator, a turbinerotor, a pull rod, a supporting cap, a supporting sleeve and a bearing. When drilling fluid flows into the percussion drilling device, the drilling fluid enters a turbine stage formed by the turbine stator and the turbine rotor through the supporting sleeve and flows into a cavity formed between the rotating barrel and the shell; the turbine rotor drives the rotating barrel to rotate, so that a radial sector-shaped through hole of a barrel body at the lower end of the rotating barrel and a radial sector-shaped through hole of the barrel body at the upper end of the base are periodically aligned or staggered, and pressure pulsation of the fluid entering the inner cavity at the upper end of the base is realized; when the rotating barrel rotates, the mandrel is driven to rotate, and due to the fact that the moving valve is fixed to the mandrel while the static valve is fixed to the base, rotation of the mandrel enables periodic alignment or staggering of an arc flow passage of the staticvalve and an arc flow passage of the moving valve, and the fluid with intrinsic pressure oscillation generates pressure oscillation again to accelerate rock breakage.
Description
technical field [0001] The invention relates to a drilling device, in particular to a device for generating hydraulic pulses to improve drilling efficiency, and belongs to the technical field of mechanical engineering or drilling engineering. Background technique [0002] Oil and gas resources are formed after hundreds of millions of years, during which the formations are constantly changing, resulting in different depths of underground oil and gas resources. The current oil and gas resource exploitation technology is relatively mature, and the supporting equipment is also constantly improving. However, the efficient exploitation of deep oil and gas resources is still a major problem facing the drilling industry. For deep formations or abrasive formations, because the rock strength and hardness increase with the increase of well depth, the drillability is poor, and the ROP is generally low. Therefore, how to improve the drilling efficiency in deep formations has always bee...
Claims
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IPC IPC(8): E21B1/00E21B4/02
CPCE21B1/00E21B4/02
Inventor 汤历平郭宝林祝效华
Owner SOUTHWEST PETROLEUM UNIV