Brake nipple for horizontal well conveying tractor perforating tool

A tractor and horizontal well technology, which is applied in the field of brake short joints, can solve the problems such as cannot be changed, cannot prevent accidents, cannot change the size of resistance, etc., and achieves the effect of improving safety and reliability

Pending Publication Date: 2019-01-11
SINOPEC JIANGHAN OILFIELD SERVICE CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Brake nipple for horizontal well conveying tractor perforating tool

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Embodiment Construction

[0009] The present invention will be described in detail below with reference to the accompanying drawings.

[0010] refer to figure 1 , The brake upper joint of the present invention is connected with the upper centralizer through threads. The brake control mechanism 2 is screwed between the brake upper joint 1 and the brake lower joint 8 . The brake pawl 9 of the brake control mechanism is located in the middle of one end of the two support arms 6 and is connected and fixed with a steel pin 7. There is a spring 5, and the push rod is connected with the motor assembly 3. The motor components adopt common motor components.

[0011] When the brake claw 9 is stretched, the motor assembly 3 drives the push rod 4 to move laterally, and the compression spring 5 pushes the push block 10 to move, thereby driving the brake claw to stretch upwards. Size, the maximum friction force is not less than 400kg, to realize the control of the movement state of the tractor perforating tool i...

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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...

Claims

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Application Information

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IPC IPC(8): E21B43/11E21B23/00
CPCE21B23/00E21B43/11
Inventor 廖勇杨国圣张志华朱江陈四平饶海涛冯亦江石元会顾培文卢超
Owner SINOPEC JIANGHAN OILFIELD SERVICE CORP
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