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Spiral double-stage compounding impacting device for drilling well speed raising and effect enhancing

A technology of helical type and impactor, which is applied to the drilling driving device, drilling equipment, impact drilling and other directions in the wellbore, can solve the problems of low rock breaking efficiency and unsatisfactory use effect of the drill bit.

Inactive Publication Date: 2016-08-31
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of the unsatisfactory use effect of the existing hydraulic impactor and the low rock-breaking efficiency of the drill bit, the present invention provides a spiral double-stage composite impactor for drilling speed and efficiency

Method used

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  • Spiral double-stage compounding impacting device for drilling well speed raising and effect enhancing
  • Spiral double-stage compounding impacting device for drilling well speed raising and effect enhancing
  • Spiral double-stage compounding impacting device for drilling well speed raising and effect enhancing

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with accompanying drawing:

[0017] See attached figure 1 , a spiral double-stage composite impactor for increasing drilling speed and increasing efficiency. 8. Movable floating plug 9, floating plug sealing ring 10, middle joint 11, lower casing 12, lower casing sealing ring 13, locking sleeve 14, upper sleeve 15, disc spring 16, lower sleeve 17, nozzle seal Ring 18, impact nozzle 19, lower joint 20, support sleeve 21 and lower joint sealing ring 22, characterized in that: upper joint 1, upper shell 4, middle joint 11, lower shell 12 and lower joint 20 pass through the thread in sequence After being fixed, a cavity is formed inside, and the cavity is followed by valve body 2, valve body spring 3, driving hammer 6, central tube 8, disc spring 16, impact bumper 20 from top to bottom; the upper end of valve body 2 is provided with a circumferential uniform The lower end of the three flowing water throu...

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PUM

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Abstract

The invention relates to a spiral double-stage compounding impacting device for drilling well speed raising and effect enhancing in the fields of oil drilling, geological drilling and the like. The pressure of slurry can be converted into spiral impact of a center pipe. The spiral double-stage compounding impacting device has the technical scheme that an upper joint, an upper casing, a middle joint, a lower casing and a lower joint are sequentially matched through screw threads; a cavity is formed after the fixation; a valve body, a valve body spring, a driving hammer, a center pipe, a disc spring and an impact spray nozzle are sequentially arranged in the cavity from top to bottom; the driving hammer and an inner tube realize the axial positioning through an inner tube spring; through holes are uniformly formed in the peripheral direction; and a spiral bearing groove is formed in the outer surface of the center pipe. According to the tool, the driving hammer is driven to move in the axial direction through slurry pressure; the center pipe is subjected to axial impact; under the joint effects of the driving hammer, the disc spring and a spiral bearing, the center pipe drives the impact spray nozzle to generate the periodic spiral impact on the lower joint, and the impact acts on a lower part drilling tool; the rock breaking efficiency of a drill bit can be effectively improved; the drilling cost is reduced; and meanwhile, the occurrence of a stick-slip phenomenon is reduced.

Description

technical field [0001] The invention relates to a helical double-stage composite impactor for increasing drilling speed and increasing efficiency, which is used in the fields of petroleum and natural gas drilling, geological drilling and the like. Background technique [0002] Conventional drilling mainly adopts the drilling method of using the rotator of the drilling rig or the bottom power drilling tool to rotate the drill bit to break the rock at the bottom of the hole, that is, the rotary drilling technology. When drilling into hard, broken rock formations and medium-hard coarse-grained heterogeneous rock formations, problems such as low rock-breaking efficiency of the drill bit and a decrease in the mechanical speed of penetration will occur. [0003] At present, impact rotary drilling is an effective method to solve the above problems. Usually, an impactor is added to the upper part of the ordinary rotary drilling tool to transmit continuous impact loads to the drill b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B1/00E21B4/02E21B4/06
CPCE21B1/00E21B4/02E21B4/06
Inventor 田家林杨志杨琳吴纯明刘刚袁长福吴波杨应林胡书辉杜凡周韬蔡旭东
Owner SOUTHWEST PETROLEUM UNIV
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