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Telescopic type tool face stabilizer

A tool face, telescopic technology, used in directional drilling, drilling equipment, earth-moving drilling, etc., can solve the problems of torsional deformation of the drill string, difficulty in stabilizing the tool face, and easy deviation, so as to prevent deviation, and the operation is simple and reliable. , The effect of simple and reliable mechanical structure

Inactive Publication Date: 2017-07-11
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a telescopic tool face stabilizer in order to solve the problems that the drill string is twisted and deformed during the drilling process, the tool face is difficult to stabilize and easy to deviate.

Method used

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  • Telescopic type tool face stabilizer
  • Telescopic type tool face stabilizer
  • Telescopic type tool face stabilizer

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Embodiment Construction

[0015] Such as figure 1 , figure 2 , image 3 with Figure 4 As shown, a telescopic tool face stabilizer of the present invention is composed of an upper joint 1, a throttle nozzle 2, a mandrel 3, a roller seat 4, a roller cover 5, a roller 6, a steel ball 7, a return spring 8, a pressing plate 9, The connection plate 10, the mandrel spring 11, the stable housing 12 and the lower joint 13 are composed; its structural features are: a ring of sealing grooves is arranged on the lower part of the outer circle of the roller seat 4, a ring of grooves is arranged on the middle part of the outer circle, and the inner cavity of the roller seat 4 It is set as a blind hole, and the center of the lower end of the blind hole is provided with a hemispherical groove; the center of the roller cover 5 is provided with a rectangular through hole, and the two ends of the rectangular through hole are arranged as arc surfaces, and hemispherical grooves are respectively arranged on the two arc s...

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Abstract

The invention relates to a telescopic type tool face stabilizer which is used in drilling engineering to prevent off tracking of a drilling tool face due to torsional deformation of a drilling column, and solves the problems that the tool face is difficult to stabilize and easy to off track due to the torsional deformation of the drilling column. The technical scheme is that rollers are mounted in blind holes of roller seats and rectangular through holes of roller covers; three steel balls are arranged in arc-shaped grooves in the middle part of the outer side of each roller; the upper ends of the roller seats are in screwed connection with the roller covers; connection plates and the two overall roller seats form a group; five groups of the connection plates and the overall roller seats are arranged in step through holes and middle sunken slots of five straightening ribs of a stable shell; two reset springs are mounted on the connection plates; a pressure plate is connected with the stable shell through a screw; a closed cavity among a mandrel, the stable shell and the roller seats is filled with hydraulic oil. The telescopic type tool face stabilizer can effectively stabilize the drilling tool face and prevent the off tracking of the drilling tool face due to the torsional deformation of the drilling column, cannot interfere with axial feeding of the drilling column, and improves the precision of a rotatable guide technology.

Description

technical field [0001] The invention relates to a telescopic tool face stabilizer used in drilling engineering to prevent the deviation of the drilling tool face caused by the torsional deformation of the drill string. Background technique [0002] In the oil and gas industry, rotary steerable drilling technology has become an essential technology for developing complex ultra-deep directional wells and extended-reach horizontal wells. Rotary steerable drilling technology has the characteristics of sliding while rotating, and has a stronger ability to control the wellbore trajectory. The wellbore drilled by rotary steerable drilling technology is smoother, the drilling limit displacement is larger, and the drilling cost is lower. Therefore, it has been widely used in high-difficulty special process wells such as horizontal wells and extended-reach wells. One type of rotary steerable drilling technology is the use of non-rotating casing-type steering drilling tools. Under suc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B7/04E21B17/10
CPCE21B7/04E21B17/10
Inventor 张梁李镕成梁政邓雄赵勇
Owner SOUTHWEST PETROLEUM UNIV
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