Reciprocating and rotating two-way displacement device

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

Technical field: [0001] 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. Background technique: [0002] 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 length, certain ...

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.

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