CN101285373A - Protective covering method of pipe thread - Google Patents
Protective covering method of pipe thread Download PDFInfo
- Publication number
- CN101285373A CN101285373A CNA2008101128859A CN200810112885A CN101285373A CN 101285373 A CN101285373 A CN 101285373A CN A2008101128859 A CNA2008101128859 A CN A2008101128859A CN 200810112885 A CN200810112885 A CN 200810112885A CN 101285373 A CN101285373 A CN 101285373A
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- coating
- screw thread
- thread
- tubing
- protection
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Abstract
The invention relates to the petroleum pipe protection technical field, in particular to a method for protecting and coating pipe screw threads. The invention aims to solve the problem that the sealing and corrosion prevention of screw threads and sealed surface of dope oil pipes are conflictive in the prior art. The invention provides a method for protecting and coating pipe screw threads. Through the sand blasting treatment and the special coating protection to screw threads and sealed end faces of pipes, the method improves the life span of screw threads and sealed end faces of oil pipes by 3 to 5 times, ensures the tightness of the sealed areas of oil pipes, improves the surface activity of screw threads and the thread gluing preventing performance of oil casing pipes, and realizes the anti-corrosion protection to screw threads and sealed end faces at the same time.
Description
Technical field
The present invention relates to OCTG resist technology field, be specifically related to a kind of protective covering method of pipe thread.
Background technology
Present special button oil pipe screw thread protection does not have rational technical solution; exist the key contradiction problem of screw thread, sealing surface protection and pipe sealing; screw thread, sealing surface carry out can having a strong impact on behind the anti-corrosion protection tightness of pipe, guarantee that the tightness of pipe just can not effectively be protected screw thread, sealing surface.For a long time, ring the tightness of special button oil pipe and how effectively protection sealing and the minimizing of screw thread position corrode that to encroach on be the problem that vast oil field user is concerned about always after the special button Oil Tube Coating.
Summary of the invention
In order to solve the button oil pipe screw thread that exists in the prior art, the sealing and the anticorrosion conflicting problem of sealing surface, the invention provides a kind of protective covering method of pipe thread.
In order to achieve the above object, the technical solution used in the present invention is:
A kind of protective covering method of pipe thread, its processing step is as follows:
(1) protection tubing prevents to collide with: necessary 100% installation of male end thread protector and band are tight in a, the tubing handling process before cleaning; B, cleaning back male end screw thread end, to wear sectional area be 15 the high temperature resistant cushion rubber of anti-collision; Also note down in tubing screw thread and sealing position after c, 100% check are cleaned;
(2) wear the sandblasting protection thread protector,, avoided in the sandblast process damage screw thread and sealing surface to have realized protection to seal face;
(3) adopt body dead angle blasting treatment technology, the blasting treatment deficiency occurs on the cleaning tubing box cupling, these defectives can cause this zone-coating adhesion to descend, and guarantee the uniformity of coating antiseptic performance;
(4) spraying encapsulation process use special-purpose spraying thread protector to prevent that atomized coating particles from splashing or spray to the sealing area of tubing, thereby group of the coating after avoiding solidifying or particle influences the tightness of special button.
(5) blasting treatment in screw thread and seal face zone is carried out sand to oil pipe, sleeve pipe screw thread specially and is cut processing, with the activity that improves the screw thread surface, the anti-stick button performance that improves tubing and casing;
(6) screw thread, the special coating protection of sealing surface zone, the sealing surface zone is divided into coating reinforced region and light coating zone, and the screw thread protective coating thickness of coating reinforced region is at 150 microns, and the thickness in light coating zone is at 10～20 microns.
Thread protector described in above-mentioned steps (2) and the step (4) is made the mould one-step casting with the tubing box cupling and is formed.
The material of above-mentioned thread protector is a synthetic rubber.
It mainly is to adopt specific abrasive material and special-purpose jetting tool that the surface active blasting treatment is carried out at the screw thread position that sand described in the above-mentioned steps (5) is cut processing.
Coating reinforced region described in the above-mentioned steps (6) has formed the loculus protection system of the uniqueness in the corrosion protection theory between sealing surface and screw thread, thereby reaches the antiseptic effect that gets twice the result with half the effort, and has realized the anti-corrosion protection to sealing surface, screw thread effectively.
Compared with prior art, the beneficial effect of technical solution of the present invention generation is:
The invention solves the sealing of tubing screw thread and sealing surface, anticorrosion problem, make improve 3～5 times the application life of tubing screw thread and sealing surface.
The specific embodiment
Below in conjunction with specific embodiment, technical scheme of the present invention is done detailed description.
The invention provides a kind of protective covering method of pipe thread, its processing step is as follows:
(1) protection tubing prevents to collide with: necessary 100% installation of male end thread protector and band are tight in a, the tubing handling process before cleaning; B, cleaning back male end screw thread end, to wear sectional area be 15 the high temperature resistant cushion rubber of anti-collision; Also note down in tubing screw thread and sealing position after c, 100% check are cleaned;
(2) wear the sandblasting protection thread protector,, avoided in the sandblast process damage screw thread and sealing surface to have realized protection to seal face; Thread protector is made the mould one-step casting with the tubing box cupling and is formed, and its material is a synthetic rubber;
(3) adopt body dead angle blasting treatment technology, the blasting treatment deficiency occurs on the cleaning tubing box cupling, these defectives can cause this zone-coating adhesion to descend, and guarantee the uniformity of coating antiseptic performance;
(4) spraying encapsulation process use special-purpose spraying thread protector to prevent that atomized coating particles from splashing or spray to the sealing area of tubing, thereby group of the coating after avoiding solidifying or particle influences the tightness of special button; Thread protector is made the mould one-step casting with the tubing box cupling and is formed, and its material is a synthetic rubber;
(5) blasting treatment in screw thread and seal face zone is carried out sand to oil pipe, sleeve pipe screw thread specially and is cut processing, with the activity that improves the screw thread surface, the anti-stick button performance that improves tubing and casing; It mainly is to adopt specific abrasive material and special-purpose jetting tool that the surface active blasting treatment is carried out at the screw thread position that sand is cut processing;
(6) screw thread, the special coating protection of sealing surface zone, the sealing surface zone is divided into coating reinforced region and light coating zone, and the screw thread protective coating thickness of coating reinforced region is at 150 microns, and the thickness in light coating zone is at 10～20 microns; The coating reinforced region has formed the loculus protection system of the uniqueness in the corrosion protection theory between sealing surface and screw thread, thereby reaches the antiseptic effect that gets twice the result with half the effort, and has realized the anti-corrosion protection to sealing surface, screw thread effectively.
Claims (5)
1, a kind of protective covering method of pipe thread, it is characterized in that: processing step is as follows:
(1) protection tubing prevents to collide with: necessary 100% installation of male end thread protector and band are tight in a, the tubing handling process before cleaning; B, cleaning back male end screw thread end, to wear sectional area be 15 the high temperature resistant cushion rubber of anti-collision; Also note down in tubing screw thread and sealing position after c, 100% check are cleaned;
(2) wear the sandblasting protection thread protector,, avoided in the sandblast process damage screw thread and sealing surface to have realized protection to seal face;
(3) adopt body dead angle blasting treatment technology, the blasting treatment deficiency occurs on the cleaning tubing box cupling, these defectives can cause this zone-coating adhesion to descend, and guarantee the uniformity of coating antiseptic performance;
(4) spraying encapsulation process use special-purpose spraying thread protector to prevent that atomized coating particles from splashing or spray to the sealing area of tubing, thereby group of the coating after avoiding solidifying or particle influences the tightness of special button.
(5) blasting treatment in screw thread and seal face zone is carried out sand to oil pipe, sleeve pipe screw thread specially and is cut processing, with the activity that improves the screw thread surface, the anti-stick button performance that improves tubing and casing;
(6) screw thread, the special coating protection of sealing surface zone, the sealing surface zone is divided into coating reinforced region and light coating zone, and the screw thread protective coating thickness of coating reinforced region is at 150 microns, and the thickness in light coating zone is at 10～20 microns.
2, a kind of protective covering method of pipe thread according to claim 1 is characterized in that: the thread protector described in described step (2) and the step (4) is made the mould one-step casting with the tubing box cupling and is formed.
3, a kind of protective covering method of pipe thread according to claim 1 and 2 is characterized in that: the material of described thread protector is a synthetic rubber.
4, a kind of protective covering method of pipe thread according to claim 1 is characterized in that: it mainly is to adopt specific abrasive material and special-purpose jetting tool that the surface active blasting treatment is carried out at the screw thread position that the sand described in the described step (5) is cut processing.
5, a kind of protective covering method of pipe thread according to claim 1 is characterized in that: the coating reinforced region described in the described step (6) forms the loculus protection system between sealing surface and screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101128859A CN101285373A (en) | 2008-05-26 | 2008-05-26 | Protective covering method of pipe thread |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101128859A CN101285373A (en) | 2008-05-26 | 2008-05-26 | Protective covering method of pipe thread |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101285373A true CN101285373A (en) | 2008-10-15 |
Family
ID=40057757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101128859A Pending CN101285373A (en) | 2008-05-26 | 2008-05-26 | Protective covering method of pipe thread |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101285373A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108326749A (en) * | 2017-12-11 | 2018-07-27 | 安徽宝辰机电设备科技有限公司 | A kind of high-intensity welding chucking surface processing method |
| CN111283556A (en) * | 2020-03-22 | 2020-06-16 | 浙江宇达新材料有限公司 | Metal material surface treatment process |
-
2008
- 2008-05-26 CN CNA2008101128859A patent/CN101285373A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108326749A (en) * | 2017-12-11 | 2018-07-27 | 安徽宝辰机电设备科技有限公司 | A kind of high-intensity welding chucking surface processing method |
| CN111283556A (en) * | 2020-03-22 | 2020-06-16 | 浙江宇达新材料有限公司 | Metal material surface treatment process |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20081015 |