CN101992424A - Treatment process for inner surface of tube for oil production - Google Patents
Treatment process for inner surface of tube for oil production Download PDFInfo
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- CN101992424A CN101992424A CN2009100562402A CN200910056240A CN101992424A CN 101992424 A CN101992424 A CN 101992424A CN 2009100562402 A CN2009100562402 A CN 2009100562402A CN 200910056240 A CN200910056240 A CN 200910056240A CN 101992424 A CN101992424 A CN 101992424A
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Abstract
The invention provides a treatment process for the inner surface of a tube for oil production, which comprises the steps of cleaning of sealing screw threads and treatment of oil stain on the inner surface at the early stage, primary sand blasting and secondary sand blasting. The treatment process for the inner surface of the tube for oil production of the invention adopts two-stage sand blasting, namely primary coarse blasting and secondary fine blasting, the cleanliness of the inner surface of the tube after treatment is greatly improved, the anchor pattern has even and uniform depth, the adhesion of an inner erosion resistant coating of the tube can be improved, the tube can be adaptable to a more severe underground environment, the service life is prolonged, and good economic benefit is obtained. Simultaneously, two sand blasting systems are provided with independent sand blasting bins and dust removing devices, are favorable for cycle use of sand, and are capable of effectively treating dust to protect the environment.
Description
Technical field
The present invention relates to a kind of process of surface treatment of tubing, relate in particular to the inner surface treatment process of a kind of oil exploitation with tubing.
Background technology
The tubing of anticorrosive coat is widely used in oilfield exploitation in the band.Because complicated geology, subsurface environment is abominable, general interior anticorrosive coat, except by extraneous fluid erosion, the wearing and tearing, greatly under arms after a period of time adhesive force will descend greatly, and even come off.Tubing after interior anticorrosive coat comes off, situation is lighter, tubing must be proposed reprocessing; Situation is comparatively serious, then causes the tubing heavy corrosion, makes tubing scrap.The adhesive force problem of anticorrosive coat must be started with from the inner surface treatment of improving tubing in solving, to obtain being fit to the anchor line degree and the cleannes of inner anticorrosioning coating.Traditional internal surface of pipe processing technology is to adopt a sandblast line to carry out the sandblast grinding process, for the bad tubing of single treatment, carries out reprocessing again, till qualified.Such process has been wasted raw material greatly, simultaneously, also is not easy to control for the formed precision of anchor line degree.
Summary of the invention
Purpose of the present invention exactly in order to address the above problem, provides the inner surface treatment process of a kind of oil exploitation with tubing.
In order to achieve the above object, the present invention has adopted following technical scheme: a kind of oil exploitation comprises that with the inner surface treatment process of tubing the sealing thread in early stage cleans and the processing of inner surface greasy dirt, is characterized in, and is further comprising the steps of:
(1) sealing thread of the tubing that will handle premenstruum (premenstrua) is loaded onto the thread protector cap, prevents to cause damage;
(2) tubing that will load onto the thread protector cap places in the sandblast storehouse of one-level sand blasting system, carries out the one-level blasting treatment with coarse sand, removes the oxide skin of internal surface of pipe;
(3) internal surface of pipe after the one-level blasting treatment is carried out sight check;
(4) sight check is qualified tubing places in the sandblast storehouse of secondary sand blasting system, carries out the secondary blasting treatment with fine sand, obtains being fit to anchor line degree, the cleannes of inner anticorrosioning coating;
(5) clean internal surface of pipe with pressure-air;
(6) with the roughness check meter pipe is tested.
The coarse sand that described one-level blasting treatment is used is 8 an orders palm fibre corundum.
The fine sand that described secondary blasting treatment is used is mixed by 16 orders palm fibre corundum and 35 orders palm fibre corundum and forms.
The proportioning of described 16 orders palm fibre corundum and 35 orders palm fibre corundum is 8～10: 1.
Described one-level sand blasting system and secondary sand blasting system are respectively equipped with independently sandblast storehouse and dust arrester, connect with stand between the sandblast storehouse of two systems.
Oil exploitation of the present invention is adopted the two-stage blasting treatment with the inner surface treatment process of tubing, promptly carrying out one-level slightly sprays, the smart spray of secondary, the cleannes of internal surface of pipe have after treatment been improved greatly, depth of abrasion pattern is evenly unified, thereby can improve the adhesive force of anticorrosive coat in the tubing, makes it can adapt to more abominable underground environment, prolong service life, had good economic benefit.Two cover sand blasting systems are equipped with independently sandblast storehouse and dust arrester simultaneously, help recycling of sand, and can effectively handle dust, the protection environment.
Description of drawings
Fig. 1 is the basic structure schematic diagram of oil exploitation of the present invention with the treatment facility that inner surface treatment process adopted of tubing.
The specific embodiment
Referring to Fig. 1, oil exploitation of the present invention with the inner surface treatment process of tubing is, earlier tubing is carried out that sealing thread cleans and by the thermal cleaning stove inner surface of tubing is carried out greasy dirt and handle, after handling totally the sealing thread of tubing is loaded onto the thread protector cap, push the sandblast storehouse 11 of one-level sand blasting system 1, polish with 8 orders palm fibre corundum coarse sand, to remove the oxide skin of internal surface of pipe, after sight check is qualified, again tubing is pushed the sandblast storehouse 21 of secondary sand blasting system 2, use by 8～10 part of 16 order palm fibre corundum and the 1 part of 35 order palm fibre corundum fine sand that forms that is mixed and polish, to obtain the anchor line degree of suitable inner anticorrosioning coating, cleannes; Clean internal surface of pipe with pressure-air at last, and pipe is tested with the roughness check meter.Internal surface of pipe cleannes after the two-stage blasting treatment reach the Sa2.5 level, and anchor line degree control accuracy is 50 ± 5 microns, is higher than 25～75 microns of prior art.
One-level sand blasting system 1 among the present invention and secondary sand blasting system 2 are respectively equipped with between the sandblast storehouse in independently sandblast storehouse 11,21 and dust arrester 12,22, two sand blasting systems and connect with stand 3.Shown in Fig. 1,13,23 is sand blasting unit.
It below is the several application example that adopts oil exploitation of the present invention to construct with the inner surface treatment process of tubing.
Example 1:
Tubing is 5 cun new drilling rods, after the one-level blasting treatment 1 time, is pushed into the secondary blasting treatment 1 time, and cleannes reach the Sa2.5 level, and anchor line degree is 25～75 microns.Behind the spraying inner anticorrosioning coating, product adhesive force is the A level in the tubing.
Example 2:
Tubing is 3 and 1/2 cun new oil pipes, one-level blasting treatment 1 time, secondary blasting treatment 1 time.After the interior anticorrosion processing, meet the every index of petroleum industry oil pipe standard SY/T6717-2008, each elephant is longer service life at home.
Example 3:
Tubing is 5 and 1/2 cun old oil pipes, one-level blasting treatment 2 times, and secondary blasting treatment 1 time, internal surface of pipe reaches the every index of petroleum industry drilling rod standard SY/T0544-2004, and old oil pipe can be on active service in the oil field again, has saved cost of oil production greatly.
Claims (5)
1. the inner surface treatment process of an oil exploitation usefulness tubing comprises that the sealing thread in early stage cleans and the processing of inner surface greasy dirt, it is characterized in that, and is further comprising the steps of:
(1) sealing thread of the tubing that will handle premenstruum (premenstrua) is loaded onto the thread protector cap, prevents to cause damage;
(2) tubing that will load onto the thread protector cap places in the sandblast storehouse of one-level sand blasting system, carries out the one-level blasting treatment with coarse sand, removes the oxide skin of internal surface of pipe;
(3) internal surface of pipe after the one-level blasting treatment is carried out sight check;
(4) sight check is qualified tubing places in the sandblast storehouse of secondary sand blasting system, carries out the secondary blasting treatment with fine sand, obtains being fit to anchor line degree, the cleannes of inner anticorrosioning coating;
(5) clean internal surface of pipe with pressure-air;
(6) with the roughness check meter pipe is tested.
2. the oil exploitation as claimed in claim 1 inner surface treatment process of tubing is characterized in that: the coarse sand that described one-level blasting treatment is used is 8 orders palm fibre corundum.
3. the oil exploitation as claimed in claim 1 inner surface treatment process of tubing is characterized in that: the fine sand that described secondary blasting treatment is used is mixed by 16 orders palm fibre corundum and 35 orders palm fibre corundum and forms.
4. the oil exploitation as claimed in claim 3 inner surface treatment process of tubing is characterized in that: the proportioning of described 16 orders palm fibre corundum and 35 orders palm fibre corundum is 8～10: 1.
5. the oil exploitation as claimed in claim 1 inner surface treatment process of tubing, it is characterized in that: described one-level sand blasting system and secondary sand blasting system are respectively equipped with independently sandblast storehouse and dust arrester, connect with stand between the sandblast storehouse of two systems.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100562402A CN101992424A (en) | 2009-08-11 | 2009-08-11 | Treatment process for inner surface of tube for oil production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100562402A CN101992424A (en) | 2009-08-11 | 2009-08-11 | Treatment process for inner surface of tube for oil production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101992424A true CN101992424A (en) | 2011-03-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100562402A Pending CN101992424A (en) | 2009-08-11 | 2009-08-11 | Treatment process for inner surface of tube for oil production |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103084324A (en) * | 2011-11-08 | 2013-05-08 | 上海图博可特石油管道涂层有限公司 | Internal coating anticorrosion process of pipe for oil exploitation |
| CN104138830A (en) * | 2013-05-10 | 2014-11-12 | 上海图博可特石油管道涂层有限公司 | Internal coating process for drill collar for well drilling |
| CN107363307A (en) * | 2017-08-16 | 2017-11-21 | 上海航天化工应用研究所 | A kind of engine heat insulation layer surface treatment process method |
| CN108818318A (en) * | 2018-05-25 | 2018-11-16 | 盐城工学院 | Intelligent automatic sand blasting system |
| CN109390115A (en) * | 2018-10-19 | 2019-02-26 | 平高集团有限公司 | A kind of surface treatment method of the metal insert for resin-cast insulator, resin-cast insulator and preparation method thereof |
| CN117300913A (en) * | 2023-11-30 | 2023-12-29 | 江苏龙跃不锈钢管业有限公司 | Stainless steel pipe inner and outer surface abrasive spraying device |
-
2009
- 2009-08-11 CN CN2009100562402A patent/CN101992424A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103084324A (en) * | 2011-11-08 | 2013-05-08 | 上海图博可特石油管道涂层有限公司 | Internal coating anticorrosion process of pipe for oil exploitation |
| CN104138830A (en) * | 2013-05-10 | 2014-11-12 | 上海图博可特石油管道涂层有限公司 | Internal coating process for drill collar for well drilling |
| CN107363307A (en) * | 2017-08-16 | 2017-11-21 | 上海航天化工应用研究所 | A kind of engine heat insulation layer surface treatment process method |
| CN108818318A (en) * | 2018-05-25 | 2018-11-16 | 盐城工学院 | Intelligent automatic sand blasting system |
| CN109390115A (en) * | 2018-10-19 | 2019-02-26 | 平高集团有限公司 | A kind of surface treatment method of the metal insert for resin-cast insulator, resin-cast insulator and preparation method thereof |
| CN109390115B (en) * | 2018-10-19 | 2020-07-31 | 平高集团有限公司 | Surface treatment method for metal insert of resin-cast insulator, resin-cast insulator and preparation method thereof |
| CN117300913A (en) * | 2023-11-30 | 2023-12-29 | 江苏龙跃不锈钢管业有限公司 | Stainless steel pipe inner and outer surface abrasive spraying device |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110330 |