CN201041004Y - Water injection well oil pipe for resisting sulfate-reducing bacteria corrosion coating - Google Patents
Water injection well oil pipe for resisting sulfate-reducing bacteria corrosion coating Download PDFInfo
- Publication number
- CN201041004Y CN201041004Y CNU2007201040938U CN200720104093U CN201041004Y CN 201041004 Y CN201041004 Y CN 201041004Y CN U2007201040938 U CNU2007201040938 U CN U2007201040938U CN 200720104093 U CN200720104093 U CN 200720104093U CN 201041004 Y CN201041004 Y CN 201041004Y
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- CN
- China
- Prior art keywords
- reducing bacteria
- sulfate reducing
- coating
- bacteria resisting
- thickness
- 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 - Lifetime
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Abstract
The utility model relates to an anti sulfate reducing bacteria corrosion coating oil pipe of water injection well, comprising a steel pipe (1), male threads (2), female threads (3), an anti sulfate reducing bacteria corrosion bottom coating (4), an anti sulfate reducing bacteria corrosion surface coating (5), an anti sulfate reducing bacteria corrosion bottom coating (6) and an anti sulfate reducing bacteria corrosion surface coating (7). The coating has the advantages of good adhesion, toughness, wear resistance, heat resistance, solvent resistance, especially bactericidal property and anti sulfate reducing bacteria corrosion property of coating surface. In 60 ml sulfate reducing bacteria culture medium, the coating is inoculated with 1 ml bacteria liquid whose sulfate reducing bacteria number are 25 per ml, and after eight days, the sulfate reducing bacteria number is 0, but under the same situation, the sulfate reducing bacteria number of test piece without the coating can reach 6000 per ml.
Description
Technical field
The utility model relates to a kind of injection well tubing of sulfate reducing bacteria resisting corrosion resistant coating, is used to have the injection well tubing on sulfate reducing bacteria corrosion stratum.
Background technology
Existing injection well tubing is at moisture, the high sulfur-bearing hydrochlorate reduction of height bacterium area water injection well inside pipe wall seriously corroded; And negative thread and pin thread place at the oil pipe two ends do not have erosion shield, and the steel surface at screw thread place suffers the heavy corrosion of stratum water quality and sulfate reducing bacteria; The internally coated injection well tubing of existing epoxy, its anti-sulfate reducing bacteria corrosion, acid corrosion-resistant performance deficiency.
Summary of the invention
The technical problems to be solved in the utility model: avoid above-mentioned weak point of the prior art and a kind of injection well tubing that the sulfate reducing bacteria resisting corrosion resistant coating of sulfate reducing bacteria resisting corrosion and acid corrosion-resistant is arranged at negative thread and pin thread place, at inside pipe wall is provided.
The technical solution adopted in the utility model is as follows: the injection well tubing of sulfate reducing bacteria resisting corrosion resistant coating, form by steel pipe 1, it is characterized in that pin thread 2 being arranged at an end of steel pipe 1, the other end at steel pipe 1 has negative thread 3, inner surface at steel pipe 1 has sulfate reducing bacteria resisting corrosion scratch coat 4 and sulfate reducing bacteria resisting erosional surface coating 5 in turn, sulfate reducing bacteria resisting corrosion scratch coat 6 and sulfate reducing bacteria resisting erosional surface coating 7 are arranged in turn on the surface of pin thread 2 and negative thread 3, steel 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 matches with pin thread, and the thickness of sulfate reducing bacteria resisting corrosion scratch coat 4 is 0.1～0.5mm, the thickness of sulfate reducing bacteria resisting erosional surface coating 5 is 0.1～0.5mm, the thickness of sulfate reducing bacteria resisting corrosion scratch coat 6 is 0.06～0.15mm, the thickness of sulfate reducing bacteria resisting erosional surface coating 7 is 0.06～0.15mm.
The injection well tubing of more excellent sulfate reducing bacteria resisting corrosion resistant coating, the long 9.5m of steel pipe, pipe thickness 6.5mm, bore 51mm, the length of pin thread 2 and negative thread 3 is that the thickness of 0.1mm, sulfate reducing bacteria resisting erosional surface coating 5 is that the thickness of 0.1mm, sulfate reducing bacteria resisting corrosion scratch coat 6 is that the thickness of 0.1mm, sulfate reducing bacteria resisting erosional surface coating 7 is 0.1mm for the thickness of 10mm, sulfate reducing bacteria resisting corrosion scratch coat 4 respectively.
The utility model beneficial effect compared with prior art
1, the injection well tubing of sulfate reducing bacteria resisting 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 tube inner wall and two ends effectively, sulfate reducing bacteria resisting corrosion scratch coat and sulfate reducing bacteria resisting erosional surface coating have good adhesive power, toughness, abrasion resistance, heat resistance, solvent resistance, especially the bactericidal properties of coating surface and sulfate reducing bacteria resisting corrosive nature, this coating sulfate reducing bacteria bacterium number after the bacterium liquid 1ml of the several 25/ml of 60ml sulfate reducing bacteria inoculation of medium sulfate reducing bacteria bacterium cultivates 8 days is 0, does not reach 6000/ml and be coated with this coating test piece sulfate reducing bacteria bacterium number under the same case.
2, injection well tubing 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 injection well tubing of sulfate reducing bacteria resisting corrosion resistant coating;
Fig. 2 is the schematic diagram of pin thread 2;
Fig. 3 is the schematic diagram of negative thread 3.
The specific embodiment
Shown in accompanying drawing 1,2,3, among the figure: the 1-steel pipe; The 2-pin thread; The 3-negative thread; 4-sulfate reducing bacteria resisting corrosion scratch coat; 5-sulfate reducing bacteria resisting erosional surface coating; 6-sulfate reducing bacteria resisting corrosion scratch coat; 7-sulfate reducing bacteria resisting erosional surface coating.
The injection well tubing of sulfate reducing bacteria resisting corrosion resistant coating, the length of the long 9.5m of steel pipe, pipe thickness 6.5mm, bore 51mm, pin thread 2 and negative thread 3 are that the thickness of 0.1mm, sulfate reducing bacteria resisting erosional surface coating 5 is that the thickness of 0.1mm, sulfate reducing bacteria resisting corrosion scratch coat 6 is that the thickness of 0.1mm, sulfate reducing bacteria resisting erosional surface coating 7 is 0.1mm for the thickness of 10mm, sulfate reducing bacteria resisting corrosion scratch coat 4 respectively.
The injection well tubing manufacture process of sulfate reducing bacteria resisting corrosion resistant coating: steel pipe 1 inner surface is applied sulfate reducing bacteria resisting corrosion scratch coat 4 and sulfate reducing bacteria resisting erosional surface coating 5 in turn, apply sulfate reducing bacteria resisting corrosion scratch coat 6 and sulfate reducing bacteria resisting erosional surface coating 7 on the surface of pin thread 2 and negative thread 3 in turn.The negative thread 3 of last oil pipe matches with the pin thread 2 of a back oil pipe during construction.
Sulfate reducing bacteria resisting corrosion scratch coat 4 and sulfate reducing bacteria resisting corrosion scratch coat 6 are by sulfate reducing bacteria resisting corrosion resin, dimethylbenzene, cyclohexanone, polyacrylate EVA solution, poly-methyl alkyl siloxane solution, polyamide wax and pigment, the coating that filler is formed and forming, sulfate reducing bacteria resisting erosional surface coating 5 and sulfate reducing bacteria resisting erosional surface coating 7 are by sulfate reducing bacteria resisting corrosion resin, dimethylbenzene, DAA, cyclohexanone, the mixed solvent of carboxylic acid dibasic ester, modified phenol phenol aldehyde type epoxy resin and bisphenol A type epoxy resin, polytetrafluoroethylene (PTFE), polyacrylate EVA solution, poly-methyl alkyl siloxane solution, polyamide wax, many zephirans mixture, cetyl pyridinium, many thiocyanogens methane and pigment, the coating that filler is formed and forming.
Test shows that it is safe and reliable that oil pipe connects construction operation; Oil pipe face coat strong adhesion, have good toughness, abrasion resistance, heat resistance, solvent resistance, especially the bactericidal properties of coating surface and sulfate reducing bacteria resisting corrosive nature, this coating sulfate reducing bacteria bacterium number after the bacterium liquid 1ml of the several 25/ml of 60ml sulfate reducing bacteria inoculation of medium sulfate reducing bacteria bacterium cultivates 8 days is 0, does not reach 6000/ml and be coated with this coating test piece sulfate reducing bacteria bacterium number under the same case.
Claims (2)
1. the injection well tubing of a sulfate reducing bacteria resisting corrosion resistant coating, form by steel pipe (1), it is characterized in that pin thread (2) being arranged at an end of steel pipe (1), the other end at steel pipe (1) has negative thread (3), inner surface at steel pipe (1) has sulfate reducing bacteria resisting corrosion scratch coat (4) and sulfate reducing bacteria resisting erosional surface coating (5) in turn, sulfate reducing bacteria resisting corrosion scratch coat (6) and sulfate reducing bacteria resisting erosional surface coating (7) are arranged in turn on the surface of pin thread (2) and negative thread (3), steel 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 (3) matches with pin thread (2), and the thickness of sulfate reducing bacteria resisting corrosion scratch coat (4) is 0.1～0.5mm, the thickness of sulfate reducing bacteria resisting erosional surface coating (5) is 0.1～0.5mm, the thickness of sulfate reducing bacteria resisting corrosion scratch coat (6) is 0.06～0.15mm, the thickness of sulfate reducing bacteria resisting erosional surface coating (7) is 0.06～0.15mm.
2. the injection well tubing of sulfate reducing bacteria resisting corrosion resistant coating according to claim 1, the length that it is characterized in that the long 9.5m of steel pipe, pipe thickness 6.5mm, bore 51mm, pin thread (2) and negative thread (3) are that the thickness of 0.1mm, sulfate reducing bacteria resisting erosional surface coating (5) is that the thickness of 0.1mm, sulfate reducing bacteria resisting corrosion scratch coat (6) is that the thickness of 0.1mm, sulfate reducing bacteria resisting erosional surface coating (7) is 0.1mm for the thickness of 10mm, sulfate reducing bacteria resisting corrosion scratch coat (4) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201040938U CN201041004Y (en) | 2007-04-03 | 2007-04-03 | Water injection well oil pipe for resisting sulfate-reducing bacteria corrosion coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201040938U CN201041004Y (en) | 2007-04-03 | 2007-04-03 | Water injection well oil pipe for resisting sulfate-reducing bacteria corrosion coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201041004Y true CN201041004Y (en) | 2008-03-26 |
Family
ID=39252710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201040938U Expired - Lifetime CN201041004Y (en) | 2007-04-03 | 2007-04-03 | Water injection well oil pipe for resisting sulfate-reducing bacteria corrosion coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201041004Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113462215A (en) * | 2021-07-23 | 2021-10-01 | 中国科学院海洋研究所 | Sulfate reducing bacteria metabolism microenvironment response type composite coating and preparation method thereof |
-
2007
- 2007-04-03 CN CNU2007201040938U patent/CN201041004Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113462215A (en) * | 2021-07-23 | 2021-10-01 | 中国科学院海洋研究所 | Sulfate reducing bacteria metabolism microenvironment response type composite coating and preparation method thereof |
| CN113462215B (en) * | 2021-07-23 | 2022-06-28 | 中国科学院海洋研究所 | Sulfate reducing bacteria metabolism microenvironment response type composite coating and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080326 |