Brake nipple for horizontal well conveying tractor perforating tool

Abstract

The invention relates to a brake pipe nipple for a horizontal well conveying tractor perforating tool. A brake control mechanism is connected by screwing between an upper brake joint and a lower brakejoint. A brake claw of the brake control mechanism is located in the middle of one end of two supporting arms, and is connected and fixed by a steel pin. The other end of the two supporting arms is fixed to a backup block by a steel pin. A spring is arranged between the backup block and a pushing rod. The pushing rod is connected with a motor assembly. In the perforation construction of horizontal wells, the brake pipe nipple forms a horizontal well conveying tractor perforating tool together with a release pipe nipple, a rotating pipe nipple, an upper centralizer, a magnetic positioning pipenipple, a tractor, a lower centralizer, a flexible pipe nipple, a safety power supply pipe nipple, a shock absorber, a perforator and a ball gun tail, and the tool can adapt to work under the perforation condition of an up-warping horizontal well. Reasonable friction resistance can be provided. A well entering tool can be kept stationary or move at uniform speed in an up-warping horizontal well.The motion state of the tractor perforating tool can be controlled. The safety and reliability of construction can be greatly improved.

Description

technical field [0001] The invention belongs to the technical field of petroleum engineering perforation, in particular to a brake sub-joint used for the perforation tool of the horizontal well transporting tractor, which is suitable for the horizontal well perforation operation. Background technique [0002] When the angle of inclination of upturned horizontal wells is greater than 98°, the perforating tool of the tractor will be difficult to control the running speed under the action of its own weight or the impact force generated by the perforation effect, and it cannot be used in a specific position. The position can be kept static or moving at a constant speed. This situation is likely to cause stretching and compression of the perforation depth, and the perforation depth cannot be accurately controlled, which affects the construction quality. In severe cases, the tool will pass over the cable, causing the cable to be twisted and damaged or broken. Engineering accidents...

AI Technical Summary

Problems solved by technology

[0003] At present, the resistance-increasing centralizer is usually used to relieve the downward sliding of the equipment, but the resistance produced by this method is small and cannot be changed, and the resistance cannot be changed according to the different inclinations of the upturned horizontal well. The tractor perforating tool will still be in the state of accelerated downward movement, which cannot prevent accidents

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