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Roller-type drilling tool surface stabilizer

A drilling tool, roller-type technology, applied in the direction of drilling equipment, drill pipe, drill pipe, etc., can solve the problems of torsional deformation of the drill string, difficulty in stabilizing the drilling tool surface, etc., to prevent deviation, simple and reliable mechanical structure, and simple operation reliable effect

Inactive Publication Date: 2018-06-29
SOUTHWEST PETROLEUM UNIV
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a roller type drilling tool face stabilizer in order to solve the problem that the drill string is twisted and deformed during the drilling process and the drilling tool face is difficult to stabilize.

Method used

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  • Roller-type drilling tool surface stabilizer
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  • Roller-type drilling tool surface stabilizer

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Embodiment Construction

[0013] Such as figure 1 , figure 2 , image 3 , Figure 4 with Figure 5 As shown, a roller type drilling tool face stabilizer of the present invention is composed of upper joint 1, positioning pin 2, liner 3, main spring 4, central tube 5, roller 6, piston 7, piston spring 8, wheel shaft 9, The outer casing 10 and the lower joint 11 are composed; its structural features are: four centralizing wings are evenly arranged in the circumferential direction of the middle of the outer casing 10, two step holes are arranged on each centralizing wing to communicate with the inner and outer spaces, and a step is arranged on the upper part of the inner cavity of the outer casing 10. Two positioning holes are evenly arranged on the upper surface of the step surface; a ring of raised steps is arranged at the lower end of the piston 7, a ring of sealing grooves is arranged on the raised step, the upper end surface of the piston 7 is set as an arc surface, and a concave Groove, the pist...

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Abstract

The invention relates to a roller-type drilling tool surface stabilizer for preventing torsion deviation of a drill stem in drilling engineering of the oil and gas industry. The problems that the drill stem is torsionally deformed during the drilling process and the drilling tool surface is difficult to stabilize are solved. According to the technical scheme, rollers are installed in grooves in the upper parts of pistons, wheel shafts penetrate through holes in the centers of the rollers and through holes in the upper parts of the pistons, and piston springs are mounted on convex steps at thelower ends of the pistons; the pistons and the piston springs are arranged in stepped holes of centralizer wings of an outer casing, and the piston springs are in a compressed state; a liner tube is arranged in an inner cavity of the outer casing, and a main spring is mounted on the convex inner edge of the lower end of the liner tube; the upper end of the outer casing is in screwed connection with the lower end of an upper joint, and the lower end of the outer casing is in screwed connection with the upper end of a lower joint; and a central tube, the liner tube, the outer casing and the pistons form closed space filled with hydraulic oil. The roller-type drilling tool surface stabilizer can effectively stabilize the drilling tool surface, the deviation of the drilling tool surface due totorsion deformation of the drill stem is prevented, and the drilling quality of the rotary guiding technology is improved.

Description

technical field [0001] The invention relates to a roller-type drilling tool face stabilizer for preventing drill strings from torsional deviation in drilling engineering in the oil and gas industry. Background technique [0002] In drilling engineering in the oil and gas industry, rotary steerable drilling technology represents the highest level of drilling technology development in the world today. Rotary steerable drilling technology has become an essential technology for developing complex ultra-deep directional wells and extended-reach horizontal wells. Compared with the traditional sliding drilling technology, the rotary steerable drilling technology has a more powerful directional function, which has the characteristics of rotating while sliding, and the control ability of the wellbore trajectory is more precise. The wellbore drilled by it More smooth, large drilling limit displacement, low drilling cost and other advantages, widely used in horizontal wells, extended ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B17/10E21B19/24
CPCE21B17/10E21B19/24
Inventor 张梁李镕成周加伟杨静远梁政赵勇
Owner SOUTHWEST PETROLEUM UNIV
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