Antifouling clamping block of continuous tube injection head and manufacturing method thereof

A clamping block and injection head technology, which is applied in the direction of drill pipe, casing, earthwork drilling and mining, etc., can solve the problems of clamping block clamping performance degradation, etc., to reduce the loss of clamping performance and reduce the clamping contact area , Guarantee the effect of clamping performance stability

Inactive Publication Date: 2014-03-26
BC P INC CHINA NAT PETROLEUM CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of the prior art, the embodiment of the present invention provides an anti-pollution clamping block of the coiled

Method used

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  • Antifouling clamping block of continuous tube injection head and manufacturing method thereof
  • Antifouling clamping block of continuous tube injection head and manufacturing method thereof
  • Antifouling clamping block of continuous tube injection head and manufacturing method thereof

Examples

Experimental program
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Example Embodiment

[0023] Example one

[0024] This embodiment provides an anti-fouling clamping block for a continuous tube injection head, see figure 1 , figure 2 with image 3 , The anti-fouling clamping block includes: a clamping block body 1, the clamping block body 1 has a concave circular arc clamping surface 11, the concave circular arc clamping surface 11 and another concave circular arc clamping surface 11 or anti-fouling The other parts of the clamping block cooperate to clamp the coiled tube injection head.

[0025] Transverse grooves 12 are processed on the concave circular arc clamping surface 11, that is, the horizontal grooves 12 are arranged along the radial direction of the concave circular arc clamping surface 11, and multiple horizontal grooves 12 are spaced on the concave circular arc clamping surface 11. It is arranged that the distance between every two horizontal grooves 12 is 5mm-10mm. Preferably, the depth of the lateral groove 12 is 1.5mm ~ 2.5mm, and the width is 3.0mm ...

Example Embodiment

[0027] Example two

[0028] The embodiment of the present invention provides a method for manufacturing an anti-fouling clamping block of a continuous tube injection head. The method is mainly a method of providing a friction coating 2 and a corrosion-resistant anti-fouling coating 3 on the anti-fouling clamping block. See figure 1 , figure 2 with image 3 , The friction coating 2 is sprayed on the concave arc clamping surface 11 and the bottom surface and side walls of the transverse groove 12, including:

[0029] In S701, the concave arc clamping surface 11 is first cleaned, degreasing and sandblasted to roughen, and the degree of roughening is Ral2.5. This can effectively remove oil stains and oxide scale on the surface of the concave arc clamping surface, so that the friction coating has better adhesion on the concave arc clamping surface.

[0030] S702, using 325 mesh ~ 500 mesh WC-Co alloy powder for supersonic spraying, the process parameters during spraying: O 2 : 2000SCFH...

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Abstract

The invention discloses an antifouling clamping block of a continuous tube injection head. The antifouling clamping block comprises a clamping block body (1) which is provided with a concave arc clamping face (11), a transverse groove (12) is formed in the concave arc clamping face (11), and a friction coating layer (2) and an anticorrosion and antifouling coating layer (3) are arranged on the concave arc clamping face (11) in sequence. The invention further discloses a manufacturing method of the antifouling clamping block of the continuous tube injection head, and belongs to the field of well drilling device corollary equipment. Due to the fact that the transverse groove is formed in the concave arc clamping face, the clamping contact area is reduced, unit pressure on the contact face is increased, the continuous lubrication film layer formed by underground media on the clamping surface can be effectively blocked and damaged, and stability of clamping performance is improved.

Description

technical field [0001] The invention relates to the field of supporting equipment for drilling equipment, in particular to an anti-pollution clamping block of a coiled tubing injection head, which is especially suitable for a chain clamping system of a winding connecting pipe. The invention also relates to a method for manufacturing the anti-fouling clamping block of the injection head of the coiled tubing. Background technique [0002] The coiled tubing injection head system is an important basic component for leading the drum-wound coiled tubing into the operation well or exporting it from the operation well to the drum for winding. The injection head clamping block mainly plays the role of clamping and leading in and out of the coiled tubing, preventing relative sliding between the coiled tube and the clamping block. With the popularization and application of coiled tubing technology in oil and gas fields, the wall of downhole coiled tubing is relatively clean in natural...

Claims

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Application Information

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IPC IPC(8): E21B19/22C23C4/12C23C4/06B05D7/24B05D5/00
Inventor 袁文才贺会群石成刚熊革谭文锋罗刚任武
Owner BC P INC CHINA NAT PETROLEUM CORP
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