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Positive and negative integrated slips

An integrated, slip technology, applied in drilling equipment, earthwork drilling, drill pipe, etc., can solve the problems of the large number of components in the overall structure, the limitation of equipment miniaturization design, and the small openness of the peripheral space. Compact structure, reduced weight, and the effect of reducing intermediate links

Inactive Publication Date: 2016-03-16
XIAN QIN SEN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of this structure are: 1. The overall size is large, taking up too much space for the equipment, which limits the miniaturization design of the equipment; 2. There are several columns on the slip basket structure, and the peripheral space is less open, which brings great inconvenience to installation and maintenance. Inconvenient; 3. There are many parts in the overall structure, and the processing cost is high

Method used

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  • Positive and negative integrated slips
  • Positive and negative integrated slips

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Experimental program
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Effect test

Embodiment 1

[0020] A front and back integrated slips, including a central axis tube, a plurality of inner vertebral bodies, a plurality of outer One of the vertebral bodies corresponds to multiple groups of external oil cylinders connected, and multiple internal vertebral bodies and multiple external vertebral bodies are arranged on the periphery of the central axis tube. The outer oil cylinders are symmetrical about a middle connecting plate, multiple inner vertebral bodies are connected to the lower surface of the middle connecting plate through multiple sets of inner oil cylinders, and multiple outer vertebral bodies are connected to the upper surface of the middle connecting plate through multiple sets of outer oil cylinders. One end surface of the inner vertebral body is respectively set corresponding to a chassis, and one end surface of a plurality of outer vertebral bodies is respectively set corresponding to the top plate, and the chassis and the top plate are connected and fixed b...

Embodiment 2

[0024] A plurality of inner vertebral bodies, a plurality of outer vertebral bodies, a plurality of groups of inner oil cylinders, and a plurality of groups of outer oil cylinders in Embodiment 1 can be respectively set as two inner vertebral bodies, two outer vertebral bodies, two groups of inner oil cylinders, and two groups of inner vertebral bodies. Outer cylinder.

[0025] figure 2 Shown is a small volume, simple structure, and convenient installation and maintenance integrated slip structure, including two inner vertebral bodies 1, 2, two outer vertebral bodies 3, 4 and two inner vertebral bodies respectively One of 1 and 2 corresponds to two sets of inner oil cylinders 5, 6 connected to two sets of outer oil cylinders 7, 8 respectively connected to one of the two outer vertebral bodies 3, 4, which are combined with the existing combined slip mechanism The difference is: two inner vertebral bodies 1, 2, two sets of inner oil cylinders 5, 6 and two outer vertebral bodies...

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Abstract

The invention provides positive and negative integrated slips, comprising a central axle tube, a plurality of inner vertebral bodies, a plurality of outer vertebral bodies, and a plurality of groups of inner oil cylinders respectively correspondingly connected with one of the plurality of inner vertebral bodies, and plurality of groups of outer oil cylinders respectively correspondingly connected with one of the plurality of outer vertebral bodies. The plurality of inner vertebral bodies and the plurality of outer vertebral bodies are arranged on the periphery of the central axle tube. The plurality of inner vertebral bodies and the plurality of groups of inner oil cylinders are symmetrical with the plurality of outer vertebral bodies and the plurality of groups of outer oil cylinders relative to an intermediate connecting disk. The plurality of inner vertebral bodies are connected with the lower surface of the intermediate connecting disk through the plurality of groups of inner oil cylinders. The plurality of outer vertebral bodies are connected with the upper surface of the intermediate connecting disk through the plurality of groups of outer oil cylinders. One end face of the plurality of inner vertebral bodies is arranged corresponding to a chassis, and one end face of the plurality of outer vertebral bodies is arranged corresponding to a top plate. The chassis and the top plate are connected and fixed through a plurality of vertical connecting rod. The installation position of the vertical connecting rod is corresponding to the position of a connecting position of a blowout preventer, so the vertical connecting rod is directly connected and fixed with the blowout preventer. The positive and negative integrated slips are compact in structure and convenient in maintenance, and device applicability is improved. Compared with original slips, volume and weight of the slips are reduced, and manufacturing cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of oil and natural gas drilling equipment, and in particular relates to a front and back integrated slips of a pressurized workover technique. Background technique [0002] Compared with the old-fashioned well killing and workover technology, the snubbing workover technology has great advantages in economy, construction speed, environmental protection and many other aspects, and it has been paid more and more attention to and applied in oil and gas fields. [0003] When the snubbing operation workover rig is working on the pipe string, the size and direction of the resultant force of the pipe string weight and well pressure on the pipe string’s jacking force are variable, so it is usually equipped with two cones, one for forward installation and one for reverse installation. shaped slips to hold the pipe string. The two slips are usually fixed on the slip basket, and then connected to the blowout preventer ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B19/10
CPCE21B19/10
Inventor 李小社戎卫平
Owner XIAN QIN SEN TECH