Fluid trigger-based infinite loop well washing tool and use method thereof

Abstract

The invention discloses a fluid trigger-based infinite loop well washing tool and a use method thereof. The fluid trigger-based infinite loop well washing tool includes a main cylinder, an upper jolt,a lower jolt, an upper core shaft, a lower core shaft, a piston, a conversion spring, a conversion element, and a limit element. A through hole and a bypass hole of the upper core shaft are arrangedon the upper core shaft, and a blind hole and a bypass hole of the lower core shaft are arranged on the lower core shaft, a conversion slot and a bypass hole of the piston are arranged on the piston,a water hole is arranged on the main cylinder, the piston can realize the switch of the circumferential position by matching the conversion slot with the conversion element, and the piston can realizethe switch of the axial direction of the piston by matching with the limit element, so that the infinite circulation conversion of a fluid passage is realized, reaction speed is fast, the effect by awell inclination angle is small, structure is impact, installation position is flexible, and a plurality of inclination methods can be adopted. By using stop-start pump control tools on the ground, the problem of limiting the opening times of the existing circulation valve and repeatedly drilling and resetting the valve is solved; and drilling efficiency is improved and drilling time is shortened.

Description

technical field [0001] The invention belongs to the technical field of downhole tools for oil and natural gas drilling engineering, and in particular relates to an infinite circulation well cleaning tool which can be controlled by fluid pressure during drilling, completion and well repairing and cleaning operations. Background technique [0002] Lost circulation and overflow are common complex situations in wells during drilling. During conventional plugging and well killing operations, large-particle plugging materials are likely to cause damage to downhole instruments. It is necessary to quickly establish bypass circulation to prevent complex accidents; during the drilling of extended-reach deep wells and ultra-deep wells, a large number of cuttings beds are often deposited in the stabilizing section and horizontal section, and it is difficult to clean them in time by conventional small-size drilling tool circulation methods. It may jam the drilling tool or affect the comp...

AI Technical Summary

Problems solved by technology

The fluid-activated circulation switch valve has a fast response speed and is less affected by the inclination angle of the well. By adjusting the displacement, the transposition piston produces different axial displacements under the action of the displacement, which solves the limitation of the opening times of the existing circulation valve and the need to repeat The problem of tripping and resetting the valve; the structure is compact, the installation position is flexible, and a variety of inclinometer methods can be used

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