Coiled tubing clamping device and injection head adopting the clamping device

A technology of tubing injection head and clamping device, which is applied in the direction of drill pipe, casing, earthwork drilling, etc., and can solve the problem of easy wear or damage of the clamping surface of the clamping block, damage or deformation of the coiled tubing surface, and easy stress concentration and other problems to achieve the effect of reducing work costs, saving maintenance time, and reducing damage

Active Publication Date: 2018-09-11
JIANGSU HEXIN PETROLEUM MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] During the operation of the injection head, the clamping block with the prismatic surface contacts the coiled tubing repeatedly, and the clamping surface of the clamping block is easily worn or damaged, and the prismatic clamping block is subjected to severe stress when clamping the coiled tubing. Small force area, easy stress concentration, repeated contact, local damage or deformation on the surface of the coiled tubing, especially when the coiled tubing is partially bent, the damage is more obvious

Method used

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  • Coiled tubing clamping device and injection head adopting the clamping device
  • Coiled tubing clamping device and injection head adopting the clamping device
  • Coiled tubing clamping device and injection head adopting the clamping device

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Embodiment Construction

[0023] The specific embodiment of the present invention will be described in detail below in conjunction with accompanying drawing:

[0024] Such as figure 1 As shown, an injection head clamping device includes a clamping block 1, a clamping seat 2 and a transmission chain 3, wherein the clamping block 1 is movably connected to the clamping seat 2, and the clamping seat 2 is fixedly connected to the transmission chain 3 , thereby forming the entire injection head clamping device;

[0025] Such as figure 2 As shown, the inner surface of the clamping block 1 is a trapezoidal clamping opening, the bottom of the clamping opening is arc-shaped, and there are clamping ribs and grooves 1-1 alternately distributed on both sides of the clamping opening. , wherein the clamping ribs include plastic clamping ribs 1-2 and hard clamping ribs 1-3, the plastic clamping ribs 1-2 and the hard clamping ribs 1-3 are alternately arranged;

[0026] Such as image 3 As shown, the height differe...

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Abstract

Disclosed are a coiled tubing clamping device and an injection head using the clamping device. An inner surface of a clamping block (1) of the clamping device is a trapezoid-shaped clamping opening; the bottom of the clamping opening is arc-shaped, and clamping ribs and grooves (1-1) are alternatingly distributed on both sides of the clamping opening, wherein the clamping ribs comprise plastic clamping ribs (1-2) and rigid clamping ribs (1-3) that are arranged apart from each other, and the plastic clamping ribs (1-2) and the rigid clamping ribs (1-3) are alternatingly arranged. The clamping device may reduce wear and tear of the inner surface of the clamping block and damage to a coiled tubing, and may also increase clamping force of the clamping block in clamping a tubing, thereby improving the operational effect and work efficiency of the device, and extending the service life of the device.

Description

technical field [0001] The invention belongs to the field of oil drilling and production equipment, in particular to a clamping device for a coiled tubing and an injection head using the clamping device. Background technique [0002] Coiled tubing (CT) technology can be traced back to the subsea pipeline "PLUTO" project during the Second World War. In 1962, California Petroleum Company and Bowen Tool Company developed a "light coiled tubing workover prototype" and installed it in the Gulf of Mexico, USA. Oil and gas wells are used for sand washing operations. In 1976, Canadian inventor Ben Gray developed the first set of real rigid tube coiled tubing drilling rigs. Since then, it has experienced rapid development. So far, coiled tubing technology has become the field of oil and gas exploration and development. Coiled tubing technology is known as "universal operation equipment" because of its wide application range and convenient use. Coiled tubing operation technology invol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B19/22
CPCE21B19/22
Inventor 胡郁乐刘志强赵钧羡赵秀和段隆臣胡新丽李波崔世明丁扬扬崔一洲丁跃翔姚林丽沈笑宇孙奉存王所根韩晶晶
Owner JIANGSU HEXIN PETROLEUM MACHINERY
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