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Hydraulic type anti-skidding bit feed tool

A drilling tool and anti-skid technology, which is applied to rotary drilling rigs, drilling equipment and methods, construction, etc., can solve problems such as difficulty in feeding a horizontal well drill string, and achieve the effects of reducing friction and simple control methods.

Inactive Publication Date: 2015-09-16
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a hydraulic anti-slip drilling tool in order to solve the problem of difficulty in feeding the drill string in horizontal wells.

Method used

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  • Hydraulic type anti-skidding bit feed tool
  • Hydraulic type anti-skidding bit feed tool
  • Hydraulic type anti-skidding bit feed tool

Examples

Experimental program
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Embodiment Construction

[0013] Such as figure 1 and figure 2 As shown, a kind of hydraulic anti-slip drilling tool of the present invention is composed of sleeve 1, half ring 2, slider 3, central tube 4, slip seat 5, slip 6, spring 7, upper cylinder 8, The lower cylinder body 9, the throttle tube 10, the output shaft 11 and the anti-drop housing 12 are composed; its structural features are: three "T" shaped grooves are evenly arranged in the circumferential direction of the lower end of the slip seat 5, and the upper ends of the three slips 6 The "T"-shaped hooks of the upper cylinder are installed in the three "T"-shaped grooves at the lower end of the slip seat 5, and the raised outer edges on both sides of the lower end are installed in the grooves on both sides of the three slopes of the upper cylinder body 8, and the slip seat 5. The upper end is connected with the lower end of the sleeve 1 with a screw thread; the spring 7 is installed on the step of the inner hole of the upper cylinder 8, th...

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Abstract

The invention relates to a hydraulic type anti-skidding bit feed tool used for bit feed of a drill column of a horizontal section of a horizontal well with the purpose of solving the problem that the drill column of the horizontal well has difficulty in bit feed. The technical scheme is described in that screwed connection is realized between the upper end of a slip bowl and the lower end of a sleeve; a spring is installed into an inner hole step of an upper cylindrical shell; a central pipe is mounted into an inner hole of the upper cylindrical shell; an excircle step at the lower portion of the central pipe compresses the spring; three sliding blocks penetrate through three through grooves in the middle of the upper cylindrical shell; the inside of the upper cylindrical shell is embedded with a middle groove of the central pipe; two half rings internally provided with grooves sleeve outsides of the sliding blocks; screwed connection is realized between the upper end of an output shaft and a throttle pipe; screwed connection is realized between the lower end of the output shaft and a drill column at the lower portion; the throttle pipe and the output shaft are integrally disposed into an inner cavity of a lower cylindrical shell; screwed connection is realized between the upper portion of the lower cylindrical shell and the upper cylindrical shell; and screwed connection is realized between the lower portion of the lower cylindrical shell and an anti-dropping housing. The hydraulic type anti-skidding bit feed tool has following beneficial effects: drilling fluid is utilized for pushing the throttle pipe and the output shaft to perform axial motion; bit pressure is provided to the drill column at the lower portion; and the drill column is fed in.

Description

technical field [0001] The invention relates to a hydraulic anti-slip drilling tool for feeding a drill string in a horizontal section of a horizontal well. Background technique [0002] In drilling engineering, horizontal wells have superior economics, but the technical difficulty of horizontal wells is also greater. Drill string decompression in the horizontal section is a phenomenon that often occurs during the drilling of horizontal wells. The decompression phenomenon is mainly due to the excessive friction between the drill string in the horizontal section and the bottom of the wellbore, which eliminates the drilling pressure provided by the upper drill string. The pressure effect directly leads to the failure of the drill string in the horizontal section, which seriously restricts the development of horizontal well drilling technology. [0003] Existing tools for reducing friction and drag in horizontal wells are few, mainly composed of anti-friction shorts with rolle...

Claims

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Application Information

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IPC IPC(8): E21B19/08
Inventor 叶哲伟梁政赵勇
Owner SOUTHWEST PETROLEUM UNIV
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