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Reciprocating rotating bidirectional replacement device

A reciprocating and bidirectional technology, applied in directional drilling, wellbore/well components, drilling equipment and methods, etc., can solve problems such as deformation and fracture of soft drilling pipes, bit shedding, difficulty in taking out, etc.

Active Publication Date: 2017-05-24
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It overcomes the difficulty of passing the existing soft drilling pipe at the opening position of the casing and the difficulty of taking it out in the formation, which is prone to deformation and fracture of the soft drilling pipe, loss of the drill bit, and sticking of the drill.

Method used

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  • Reciprocating rotating bidirectional replacement device
  • Reciprocating rotating bidirectional replacement device
  • Reciprocating rotating bidirectional replacement device

Examples

Experimental program
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Effect test

Embodiment Construction

[0019] Such as figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown, a reciprocating and rotating two-way replacement device includes a motor joint 1, an outer cylinder I4, a conversion joint I6 and an outer cylinder II13; the upper end of the motor joint 1 is connected to a downhole power motor, and the outer wall of the motor joint 1 is welded and fixed with a limited locking block 3, The outer wall of the motor joint 1 is provided with a spiral guide groove Ⅰ19, the outer side of the motor joint 1 is covered with an outer cylinder Ⅰ4 and is sealed by a sealing ring Ⅰ8, and a plurality of limit locking grooves 2 are evenly distributed on the inner wall of the upper end of the outer cylinder Ⅰ4, and the limit locking block 3 and The limit lock groove 2 matches and can be moved down along the limit lock groove 2 to unlock. The inner diameter of the inner wall of the outer cylinder I4 where the limit lock groove 2 is located is smaller t...

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Abstract

The invention relates to the technical field of a radial horizontal rotating drilling work, and particularly relates to a reciprocating rotating bidirectional replacement device. The upper end of a motor joint of the device is connected with an underground power motor, a limiting locking block is welded and fixed to the outer wall of a motor joint, and a spiral guide groove I is arranged on the outer wall of the motor joint; the outside of the motor joint is sleeved with an outer cylinder I and sealed through a sealing ring I; multiple limiting locking grooves are evenly distributed on the circumference on the inner wall of the upper end of the outer cylinder I, the limiting locking blocks and the limiting locking grooves are matched to each other and can move downwards and unlock along the limiting locking groove. A soft drilling pipe can pass through a sleeve window opening position in radial horizontal rotary drilling work and spirally move and pass when taking out from a stratum, thereby avoiding blockage of the soft drilling pipe in the stratum, preventing the soft drilling pipe from deformation rupture, drill bit dropping, and jamming by excessive upwards lifting force, effectively prevent underground complex condition in the radial horizontal rotary drilling work, reduce the working risk and working cost, and improve the working efficiency.

Description

[0001] Technical field: [0002] The invention relates to the technical field of radial and horizontal rotary drilling operations, in particular to a reciprocating and rotating two-way displacement device. [0003] Background technique: [0004] The radial horizontal rotary drilling technology drills radially and horizontally from the existing main wellbore into the formation with a very small radius of curvature. This technology combines the mechanism of high-pressure water jet rock breaking and the cutting or grinding action of the drill bit to comprehensively break the rock formation, which can effectively Long-distance drilling into the formation to achieve the purpose of rapidly increasing the oil drainage area, improving the degree of reservoir production and ultimate recovery. An economical means to restore or increase the productivity of a single well. However, the soft drilling pipe, the core component of the process, has the characteristics of small diameter, large l...

Claims

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Application Information

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IPC IPC(8): E21B23/00E21B7/04
CPCE21B7/046E21B23/00
Inventor 施连海赵敏杨帆徐涛韩龙黄志强刘平全李磊兵
Owner BC P INC CHINA NAT PETROLEUM CORP
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