CN201024908Y - An ultra-strong antiseptic oil well pipe and its connection hoop - Google Patents
An ultra-strong antiseptic oil well pipe and its connection hoop Download PDFInfo
- Publication number
- CN201024908Y CN201024908Y CNU200720021178XU CN200720021178U CN201024908Y CN 201024908 Y CN201024908 Y CN 201024908Y CN U200720021178X U CNU200720021178X U CN U200720021178XU CN 200720021178 U CN200720021178 U CN 200720021178U CN 201024908 Y CN201024908 Y CN 201024908Y
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- CN
- China
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- oil well
- well pipe
- oil pipe
- box cupling
- wear resistance
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Abstract
The utility model relates to a high intensity corrosion proof oil pipe and coupling, belonging to the filed of mechanical oil extracting device, comprising an oil pipe and an oil pipe coupling. A self-melting high intensity alloy corrosion proof wear resistance layer is respectively arranged on the external wall and the internal wall of the two outwards thickened tips of the oil pipe taking the welding gap as borderline, and the screw thread areas of the two ends. A plasticizing modified epoxy powder protective layer is arranged on the external wall and the internal wall of the oil pipe body between the two end welding gaps of the oil pipe, and the plasticizing modified epoxy powder protective layer is overlapped with the self-melting high intensity alloy corrosion proof wear resistance layer. A self fluxing high intensity alloy corrosion proof wear resistance layer is arranged on the external wall and the internal wall of the oil pipe coupling and the screw thread area. With the anticorrosive wear resistance layer, compared with the prior art, the utility model not only increases the anticorrosive wear resistance capability, but also increases the screw thread intensity of the oil pipe and the coupling, thereby prolonging the service life of the oil pipe and the coupling and decreasing the exploitation cost of the well.
Description
Affiliated technical field
A kind of super-high-strength anti-corrosion oil well pipe and box cupling thereof belong to petroleum machinery oil production equipment field.
Background technology
When oil and gas development, oil well pipe bears the synergy of multiple load and different corrosive mediums at work, well liquid contains salt solution, carbon dioxide, hydrogen sulfide or corrosion-causing bacteria in some oil well, the existence of these corrosive mediums or corrosion-causing bacteria, greatly reduce the application life of oil well pipe, especially the thread gluing problem of oil well pipe and oil well pipe box cupling is a difficult problem that exists in domestic each elephant well construction always.Existing oil well pipe and box cupling thereof all have antiseptic property usually, can sustain the long-term corrosion of corrosive medium in the oil well or corrosion-causing bacteria, but but can't improve the screw strength and the antiseptic property of oil well pipe and box cupling thereof simultaneously, the key that therefore prolongs oil well pipe and box cupling application life thereof is to improve the screw strength and the antiseptic property thereof of oil well pipe and box cupling thereof.
Summary of the invention
The purpose of this utility model is at the problem that exists in the background technology, a kind of super-high-strength anti-corrosion oil well pipe and box cupling thereof are provided, this oil well pipe adopts two kinds of technique subsections to handle anticorrosive coat, box cupling adopts a kind of PROCESS FOR TREATMENT anticorrosive coat, can improve the antiseptic property and the screw strength of oil well pipe and box cupling thereof simultaneously, prolong the application life of oil well pipe and box cupling thereof.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of super-high-strength anti-corrosion oil well pipe and box cupling thereof comprise oil well pipe and oil well pipe box cupling, at the outer wall and the inwall that with the weld seam are the external upset (EU) termination, oil well pipe two ends on boundary, two ends threaded portion spraying one deck is from molten high-strength alloy anticorrosion antiwear layer, the outer wall of oil well pipe body and inwall electrostatic coating solidify plasticizing modified epoxy powder overcoat between the weld seam of oil well pipe two ends, and with the overlapping covering of intersection of molten high-strength alloy anticorrosion antiwear layer certainly, the outer wall of oil well pipe box cupling, inwall and threaded portion spraying one deck thereof are from molten high-strength alloy anticorrosion antiwear layer.Can improve the screw strength and the antiseptic property of oil well pipe and box cupling thereof from molten high-strength alloy anticorrosion antiwear layer, plasticizing modified epoxy powder overcoat has that coating hardness is good and flexible, adhesive power is good, impact strength is big, the characteristics of anticorrosion antiwear.
The beneficial effects of the utility model are: a kind of super-high-strength anti-corrosion oil well pipe and box cupling thereof are because the existence of anticorrosion antiwear layer, compared with prior art, not only improved the anticorrosion antiwear performance of itself, and improved the screw strength of oil well pipe and box cupling thereof, thereby prolonged the application life of oil well pipe and box cupling thereof, reduced the cost of winning of oil gas well.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further specified.
Fig. 1 is the structural representation of first embodiment of the utility model.
Fig. 2 is the structural representation of second embodiment of the utility model.
1. oil well pipe box cuplings among the figure, 2. certainly molten high-strength alloy anticorrosion antiwear layer, 3. external upset (EU) termination, 4. weld seam, 5. plasticizing modified epoxy powder overcoat, 6. oil well pipe body.
The specific embodiment
The purpose of this utility model can reach in the following manner:
Fig. 1 is first embodiment of the utility model: oil well pipe and oil well pipe box cupling (1) are split-type structural, with weld seam (4) outer wall and the inwall of the external upset (EU) termination, oil well pipe two ends (3) on boundary, two ends threaded portion spraying one deck is from molten high-strength alloy anticorrosion antiwear layer (2), the outer wall of oil well pipe body (6) and inwall electrostatic coating solidify plasticizing modified epoxy powder overcoat (5) between oil well pipe two ends weld seams (4), and with the overlapping covering of intersection of molten high-strength alloy anticorrosion antiwear layer (2) certainly, the outer wall of oil well pipe box cupling (1), inwall and threaded portion spraying one deck thereof are from molten high-strength alloy anticorrosion antiwear layer (2).
Fig. 2 is second embodiment of the utility model: oil well pipe and oil well pipe box cupling (1) are integral structure, at the outer wall and the inwall that with weld seam (4) are the oil well pipe one end external upset (EU) termination (3) on boundary, threaded portion spraying one deck is from molten high-strength alloy anticorrosion antiwear layer (2), the outer wall of one end oil well pipe box cupling (1), inwall and threaded portion spraying one deck thereof are from molten high-strength alloy anticorrosion antiwear layer (2), the outer wall of oil well pipe body (6) and inwall electrostatic coating solidify plasticizing modified epoxy powder overcoat (5) between oil well pipe two ends weld seams (4), and with the overlapping covering of intersection of molten high-strength alloy anticorrosion antiwear layer (2) certainly.
Is 0.02～0.30mm from molten high-strength alloy anticorrosion antiwear layer (2) with the thickness that plastifies modified epoxy powder overcoat (5).
Claims (3)
1. super-high-strength anti-corrosion oil well pipe and box cupling thereof, comprise oil well pipe and oil well pipe box cupling (1), it is characterized in that: be the outer wall and the inwall of the external upset (EU) termination, oil well pipe two ends (3) in boundary line with weld seam (4), the two ends threaded portion has one deck from molten high-strength alloy anticorrosion antiwear layer (2), the outer wall of oil well pipe body (6) and inwall have one deck plasticizing modified epoxy powder overcoat (5) between oil well pipe two ends weld seams (4), and with the overlapping covering of intersection of molten high-strength alloy anticorrosion antiwear layer (2) certainly, the outer wall of oil well pipe box cupling (1), inwall and threaded portion have one deck from molten high-strength alloy anticorrosion antiwear layer (2).
2. a kind of super-high-strength anti-corrosion oil well pipe according to claim 1 and box cupling thereof, its feature also is: molten certainly high-strength alloy anticorrosion antiwear layer (2) is 0.02～0.30mm with the thickness of plasticizing modified epoxy powder overcoat (5).
3. a kind of super-high-strength anti-corrosion oil well pipe according to claim 1 and box cupling thereof, its feature also is: oil well pipe and oil well pipe box cupling (1) can be split-type structural, also can be integral structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720021178XU CN201024908Y (en) | 2007-04-27 | 2007-04-27 | An ultra-strong antiseptic oil well pipe and its connection hoop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720021178XU CN201024908Y (en) | 2007-04-27 | 2007-04-27 | An ultra-strong antiseptic oil well pipe and its connection hoop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201024908Y true CN201024908Y (en) | 2008-02-20 |
Family
ID=39098765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720021178XU Expired - Lifetime CN201024908Y (en) | 2007-04-27 | 2007-04-27 | An ultra-strong antiseptic oil well pipe and its connection hoop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201024908Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102174878A (en) * | 2011-02-22 | 2011-09-07 | 梅河口市弘业无缝钢管有限公司 | Special type oil well pipe with changed materials and structural layers at two ends and manufacturing method thereof |
-
2007
- 2007-04-27 CN CNU200720021178XU patent/CN201024908Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102174878A (en) * | 2011-02-22 | 2011-09-07 | 梅河口市弘业无缝钢管有限公司 | Special type oil well pipe with changed materials and structural layers at two ends and manufacturing method thereof |
| CN102174878B (en) * | 2011-02-22 | 2013-04-24 | 梅河口市弘业无缝钢管有限公司 | Manufacturing method of special type oil well pipe with changed materials and structural layers at two ends |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20090306 Address after: 560, No. two, the Yellow River Road, Binzhou, Shandong Province, 256600 Patentee after: Jiuhuan Petroleum Machinery Co., Ltd., Shandong Address before: Zhuzhou Road, Laoshan District of Shandong city of Qingdao province No. 151 high tech park in building 3, Room 301, zip code: 266000 Patentee before: Jiuhuan Machinery Corp. |
|
| ASS | Succession or assignment of patent right |
Owner name: SHANDONG JIUHUAN PETROLEUM MACHINE CO., LTD. Free format text: FORMER OWNER: JIUHUAN MACHINE CO., LTD. Effective date: 20090306 |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080220 |