CN201687405U - Drilling oil pipe with hydrogen sulfide corrosion resistant coatings - Google Patents
Drilling oil pipe with hydrogen sulfide corrosion resistant coatings Download PDFInfo
- Publication number
- CN201687405U CN201687405U CN2010201706090U CN201020170609U CN201687405U CN 201687405 U CN201687405 U CN 201687405U CN 2010201706090 U CN2010201706090 U CN 2010201706090U CN 201020170609 U CN201020170609 U CN 201020170609U CN 201687405 U CN201687405 U CN 201687405U
- Authority
- CN
- China
- Prior art keywords
- oil pipe
- thickness
- hydrogen sulfide
- coat
- modified epoxy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The utility model discloses a drilling oil pipe with hydrogen sulfide corrosion resistant coatings. The oil pipe comprises a steel pipe (1), male threads (2), female threads (3), a modified phenolic aldehyde base coating (4), a modified epoxy finishing coating (5), a modified phenolic aldehyde base coating (6), and a modified epoxy finishing coating (7). The coatings have the advantages of excellent adhesion, tenacity and abrasion, heat and solvent resistant performances, as well as resistance to the corrosion of strong acids (the coatings are resistant to a mixed solution of 15% hydrochloric acid and 15% hydrofluoric acid under 93 DEG C); and particularly, with the resistance to hydrogen sulfide corrosion, the coatings can remain intact after being soaked in a solution with a total pressure of 32MPa, an H2S partial pressure of 3.2MPa, a CO2 partial pressure of 3.2MPa and a temperature of 90 DEG C for 168 hours.
Description
Technical field
The utility model relates to a kind of drilling well oil pipe of hydrogen sulfide corrosion resistant coating.
Background technology
Existing drilling well oil pipe does not have erosion shield at the negative thread and the pin thread place at oil pipe two ends, and the steel surface at screw thread place suffers the heavy corrosion of stratum essence; The internally coated drilling well oil pipe of existing epoxy, its hydrogen sulfide corrosion-resistant performance, anti-strong acid performance deficiency.
The utility model content
The technical problems to be solved in the utility model: avoid above-mentioned weak point of the prior art and a kind of drilling well oil pipe that the hydrogen sulfide corrosion resistant coating of anti-vitrification hydrogen-type corrosion and the corrosion of anti-strong acid is arranged at negative thread and pin thread place, at inside pipe wall is provided.
The technical solution adopted in the utility model has provided a kind of drilling well oil pipe of hydrogen sulfide corrosion resistant coating, described oil pipe steel pipe is formed, it is characterized in that: the end at described steel pipe has pin thread, the other end at steel pipe has negative thread, inner surface at steel pipe has modified phenolic scratch coat and modified epoxy finishing coat in turn, on the surface of pin thread and negative thread modified phenolic scratch coat and modified epoxy finishing coat are arranged in turn, the length of steel pipe is 9～24m, pipe thickness is 5～20mm, bore is 50-100mm, the length of pin thread 2 and negative thread respectively is 10-100mm, negative thread matches with pin thread, and the thickness of modified phenolic scratch coat is 0.2-0.5mm, the back degree of modified epoxy finishing coat is 0.2-0.5mm, the thickness of modified phenolic scratch coat is 0.06-0.15mm, the thickness of modified epoxy finishing coat is 0.06-0.15mm.
The drilling well oil pipe of more excellent hydrogen sulfide corrosion resistant coating, the long 9.5m of steel pipe, pipe thickness 6.5mm, bore 51mm, the length of pin thread and negative thread is that the thickness of 0.2mm, modified epoxy finishing coat is that the thickness of 0.2mm, modified phenolic scratch coat is that the thickness of 0.1mm, modified epoxy finishing coat is 0.1mm for the thickness of 10mm, modified phenolic scratch coat respectively.
The drilling well oil pipe manufacture process of hydrogen sulfide corrosion resistant coating: steel pipe 1 inner surface is applied modified phenolic scratch coat 4 and modified epoxy finishing coat 5 in turn, apply modified phenolic scratch coat 4 and modified epoxy finishing coat 5 in turn on the surface of pin thread 2 and negative thread 3.The negative thread of last oil pipe matches with the pin thread of a back oil pipe during construction.
Modified phenolic scratch coat 4 and modified phenolic scratch coat 6 are formed by phenol-formaldehyde resin modified, dimethylbenzene, ring ethyl ketone, polyacrylate EVA solution, poly-methyl alkyl siloxane moltenly roll, polyamide wax and pigment, filler are formed coating, modified epoxy finishing coat 5 and modified epoxy finishing coat 7 by modified epoxy, dimethylbenzene, DAA, phenolic resin, polytetrafluoroethylene (PTFE), polyacrylate EVA solution, gather the coating that methyl alkyl siloxane solution, polyamide wax and pigment, filler form and form.
The utility model beneficial effect compared with prior art:
1, the drilling well oil pipe of hydrogen sulfide corrosion resistant coating of the present utility model, can strengthen the anti-corrosion capability of the pin thread 2 and the negative thread 3 at oil pipe two ends effectively, modified phenolic scratch coat and modified epoxy finishing coat have good adhesive power, toughness, abrasion resistance, heat resistance, solvent resistance, especially hydrogen sulfide corrosion resistant is at stagnation pressure 32MPa, H
2S dividing potential drop 3.2MPa, CO
2Dividing potential drop 3.2Mpa, immersion 168h coating is intact in 90 ℃ of solution, also can corrode by anti-strong acid, can anti-15% hydrochloric acid and 15% hydrofluoric acid mixed solution under 93 ℃.
2, the drilling well oil pipe is when connecting construction, because negative thread and pin thread place do not have corrosion, it is reliable to connect construction safety, good airproof performance.
Description of drawings
Fig. 1 is the sectional view of the drilling well oil pipe of hydrogen sulfide corrosion resistant coating;
Fig. 2 is the schematic diagram of pin thread 2;
Fig. 3 is the schematic diagram of negative thread 3.
1, one steel pipe among the figure; 2, pin thread; 3, negative thread; 4, modified phenolic scratch coat; 5, modified epoxy finishing coat; 6, modified phenolic scratch coat; 7, modified epoxy finishing coat.
The specific embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present utility model is further described.Following examples only are used for the technical solution of the utility model more clearly is described, and can not limit protection domain of the present utility model with this.
See Fig. 1, Fig. 2, Fig. 3, in the utility model in the drilling well oil pipe of hydrogen sulfide corrosion resistant coating, the length of steel pipe 1 is that 9.5m, pipe thickness are that the internal diameter of 6.5mm, pipe is that the length of 51mm, pin thread 2 and negative thread 3 is that the thickness of 0.2mm, modified phenolic scratch coat 6 is that the thickness of 0.1mm, modified epoxy finishing coat 7 is 0.1mm for the thickness of the thickness 0.2mm of 10mm, modified phenolic scratch coat 4, modified epoxy finishing coat 5 respectively.
The drilling well oil pipe performance test of hydrogen sulfide corrosion resistant coating shows that it is safe and reliable that oil pipe connects construction operation; Oil pipe face coat strong adhesion has good toughness, abrasion resistance, heat resistance, solvent resistance, and hydrogen sulfide corrosion resistant especially is at stagnation pressure 32Mpa, H
2S dividing potential drop 3.2Mpa, CO
2Dividing potential drop 3.2Mpa, immersion 168h coating is intact in 90 ℃ of solution, also can corrode by anti-strong acid, down can anti-15% hydrochloric acid and the molten corrosion of rolling of 15% hydrofluoric acid mixing at 93 ℃.
The above only is a preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model know-why; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (2)
1. the drilling well oil pipe of a hydrogen sulfide corrosion resistant coating, described oil pipe steel pipe (1) is formed, it is characterized in that: the end at steel pipe (1) has pin thread (2), the other end at steel pipe (1) has negative thread (3), inner surface at copper pipe (1) has modified phenolic scratch coat (4) and modified epoxy finishing coat (5) in turn, on the surface of pin thread (2) and negative thread (3) modified phenolic scratch coat (6) and modified epoxy finishing coat (7) are arranged in turn, copper pipe (1) length 9-24m, pipe thickness 5-20mm, bore 50-100mm, the length of pin thread (2) and negative thread (3) respectively is 10-100mm, negative thread (2) matches with pin thread (3), and the thickness of modified phenolic scratch coat (4) is 0.2-0.5mm, the thickness of modified epoxy finishing coat (5) is 0.2-0.5mm, the thickness of modified phenolic scratch coat (6) is 0.06-0.15mm, the thickness of modified epoxy finishing coat (7) is 0.06-0.15mm.
2. the drilling well oil pipe of hydrogen sulfide corrosion resistant coating according to claim 1 is characterized in that: the length of the long 9.5m of steel pipe, pipe thickness 6.5mm, bore 51mm, pin thread (2) and negative thread (3) is that the thickness of 0.2mm, modified epoxy finishing coat (5) is that the thickness of 0.2mm, modified phenolic scratch coat (6) is that the thickness of 0.1mm, modified epoxy finishing coat (7) is 0.1mm for the thickness of 10mm, modified phenolic scratch coat (4) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201706090U CN201687405U (en) | 2010-04-27 | 2010-04-27 | Drilling oil pipe with hydrogen sulfide corrosion resistant coatings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201706090U CN201687405U (en) | 2010-04-27 | 2010-04-27 | Drilling oil pipe with hydrogen sulfide corrosion resistant coatings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201687405U true CN201687405U (en) | 2010-12-29 |
Family
ID=43375689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201706090U Expired - Fee Related CN201687405U (en) | 2010-04-27 | 2010-04-27 | Drilling oil pipe with hydrogen sulfide corrosion resistant coatings |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201687405U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305027A (en) * | 2011-08-12 | 2012-01-04 | 西南石油大学 | Anti-corrosion thermal-proof oil pipe with thermal barrier coating on surface for thermal recovery of thick oil |
-
2010
- 2010-04-27 CN CN2010201706090U patent/CN201687405U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305027A (en) * | 2011-08-12 | 2012-01-04 | 西南石油大学 | Anti-corrosion thermal-proof oil pipe with thermal barrier coating on surface for thermal recovery of thick oil |
| CN102305027B (en) * | 2011-08-12 | 2013-12-11 | 西南石油大学 | Anti-corrosion thermal-proof oil pipe with thermal barrier coating on surface for thermal recovery of thick oil |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103194146B (en) | Metal pipe internal wall thermoplasticity is high temperature resistant antisticking corrosion-proof paint and preparation method thereof | |
| CN102953688A (en) | Heat insulation oil tube with vacuum coating | |
| CN202990889U (en) | Coating vacuum heat-insulating oil pipe | |
| CN201687405U (en) | Drilling oil pipe with hydrogen sulfide corrosion resistant coatings | |
| CN2926482Y (en) | Well-drilling oil pipe of hydrogen-sulfide-resisting corrosive coating | |
| CN201883952U (en) | High-molecular composite sucker rod | |
| CN212454282U (en) | Novel sucker rod | |
| CN204153333U (en) | A kind of anticorrosion seamless steel pipe for boats and ships | |
| CN202561371U (en) | Anti-corrosion oil pipe | |
| CN201810219U (en) | Corrosion-resistant and wear-resistant sucker rod | |
| CN205938216U (en) | Acid and alkali corrosion resistance steel pipe | |
| CN204827255U (en) | Take sleeve pipe of epoxy coating and anodize in pit | |
| CN201149136Y (en) | Oxyammonia rubber modified asphalt corrosion-proof pipe | |
| CN201041004Y (en) | Water injection well oil pipe for resisting sulfate-reducing bacteria corrosion coating | |
| CN202090849U (en) | Antiseptic thread-gluing-preventing oil casing pipe coupling | |
| CN103600214A (en) | Processing technology for reproducing column head threaded holes of hydraulic support upright column | |
| CN202990887U (en) | Anti-corrosion, anti-scale and wear resistant sucker rod | |
| CN202370441U (en) | Anticorrosive and wear-resistant sucker rod | |
| CN205172459U (en) | Oily casing coupling of antiseized knot anticorrosives | |
| CN202990895U (en) | Oil pipe with dissolution coating modification high polymer materials for entire corrosion resistance | |
| CN203809878U (en) | Corrosion-resistant steel pipe | |
| CN203703391U (en) | Seamless steel pipe for high-pressure boiler | |
| CN104676130A (en) | Anti-corrosion steel pipe | |
| CN212900213U (en) | PPR loose joint | |
| CN202990894U (en) | Oil pipe with dissolution coating modification high polymer materials for inner corrosion resistance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101229 Termination date: 20130427 |