CN104197113A - Three-layer composite oil pipe and manufacturing method - Google Patents
Three-layer composite oil pipe and manufacturing method Download PDFInfo
- Publication number
- CN104197113A CN104197113A CN201410423790.4A CN201410423790A CN104197113A CN 104197113 A CN104197113 A CN 104197113A CN 201410423790 A CN201410423790 A CN 201410423790A CN 104197113 A CN104197113 A CN 104197113A
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- Prior art keywords
- pipe
- layer
- oil pipe
- termination
- polyethylene
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- 239000002131 composite material Substances 0.000 title claims abstract description 19
- 238000004519 manufacturing process Methods 0.000 title abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 59
- 239000010959 steel Substances 0.000 claims abstract description 59
- 239000004698 Polyethylene Substances 0.000 claims abstract description 51
- 229920000573 polyethylene Polymers 0.000 claims abstract description 48
- -1 polyethylene Polymers 0.000 claims abstract description 47
- 238000000034 method Methods 0.000 claims abstract description 14
- 206010055018 Gingival cyst Diseases 0.000 claims description 23
- 210000004907 gland Anatomy 0.000 claims description 23
- 230000008878 coupling Effects 0.000 claims description 14
- 238000010168 coupling process Methods 0.000 claims description 14
- 238000005859 coupling reaction Methods 0.000 claims description 14
- 230000008719 thickening Effects 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 7
- 238000005516 engineering process Methods 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 6
- 229920003023 plastic Polymers 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 239000004809 Teflon Substances 0.000 claims description 4
- 229920006362 Teflon® Polymers 0.000 claims description 4
- 239000003365 glass fiber Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 claims description 3
- 230000007797 corrosion Effects 0.000 abstract description 5
- 238000005260 corrosion Methods 0.000 abstract description 5
- 238000005299 abrasion Methods 0.000 abstract description 2
- 238000010276 construction Methods 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 239000011521 glass Substances 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 47
- 239000000463 material Substances 0.000 description 5
- 239000003129 oil well Substances 0.000 description 4
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 description 4
- 230000003260 anti-sepsis Effects 0.000 description 3
- 239000009671 shengli Substances 0.000 description 3
- 239000008186 active pharmaceutical agent Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 229920001903 high density polyethylene Polymers 0.000 description 2
- 239000004700 high-density polyethylene Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- OFNHPGDEEMZPFG-UHFFFAOYSA-N phosphanylidynenickel Chemical compound [P].[Ni] OFNHPGDEEMZPFG-UHFFFAOYSA-N 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229920000965 Duroplast Polymers 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
- F16L9/147—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups comprising only layers of metal and plastics with or without reinforcement
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to a three-layer composite oil pipe and a manufacturing method. According to the technical scheme, the two ends of a steel tube layer are provided with thickened end sockets, the outer sides of the thickened end sockets are provided with taper pipe threads, and the inner sides of the thickened end sockets are provided with end socket inner conical teeth of a taper structure; an inner cavity of the steel tube layer is provided with a polyethylene liner tube which is in interference fit with the steel tube layer, the two ends of the polyethylene liner tube are of taper structures, inner expansion taper sleeves are pressed into the two taper structures respectively, and the middle of the outer side of the steel tube layer is a glass steel tube layer. The oil pipe has the advantages that the three-layer composite oil pipe is high in strength, self-weight is reduced, the oil pipe is resistant to inside and outside corrosion and abrasion, the lining polyethylene layer is thin but can be well combined with and fixed to a steel tube in a sealed mode, stress on a tubing joint is reduced, and the tubing joint is not prone to being damaged; besides, people do not need to worry that the two ends of the oil pipe are prone to colliding and being damaged during flanging in workover construction, oil pipe maintenance and repair cost in the workover process is greatly reduced, and operation cycle cost of pipelines is greatly reduced.
Description
Technical field
The present invention relates to a kind of composite oil pipe and making method, particularly a kind of three layers of composite oil pipe and making method.
Background technique
Because the most of oil fields of China have entered the tail period stage; oil well corrosion is day by day serious; field produces has been caused to adverse effect; the protection of oil well pipe has become the practical problem of being badly in need of solution; in recent ten years for to protecting in oil well pipe; there is multiple protection oil pipe, as nickel phosphor plating oil pipe, liner oil pipe, spraying oil pipe and nitrogenize antisepsis oil pipe etc.But because the corrosion factor of oil well is complicated, various forms of aseptic technics all exist narrow limitation, are necessary to improve for these problems.
Nickel phosphor plating oil pipe go into the well after anticorrosive coat easily occur that large size comes off, peels off; The inside and outside anti-eccentric wear ability of epoxy powder spraying oil pipe is poor, and the sprayfused coating obstruction pit shaft that easily comes off; Nitrogenize antisepsis oil pipe Plasticity Decreasing, impact resistance declines, and coating only has 0.01 ~ 0.015mm, not wear-resisting, and uniformity is also poor,
Frp lining oil pipe easily causes adhesive failure to come off in using; Stainless steel inner lining wall thickness 0.3 ~ 0.5mm, defect is not wear-resisting, can only be for water injection well, and also there is water injection technology liner scratch in lower instrument process.
2003, Karamay oilfield was introduced liner UHMW PE oil pipe from the U.S., the earliest use of Zhe Shi China to liner UHMW PE oil pipe.In the end of the year 2003, Machinery Factory of Shengli Petroleum Administration abroad company produces 60 tons of liner oil pipes, successively at 6 mouthfuls of eccentric wears of Dongxing oil fields in Shengli, use in the pumping well of seriously corroded.Machinery Factory of Shengli Petroleum Administration has introduced external advanced person's wear-resistant, the anti-rotten oil pipe undergauge of liner UHMW PE and port treatment technology and production line in 2004, in 2005, start to put into serial production and promote.At triumph, Jiangsu, Henan, Dagang Oilfield etc., promote the use of at present, rely on superior performance, this product has obtained user's abundant approval, is lining into oil pipe endoporus and recovers by elastic memory after high density polyethylene (HDPE) undergauge, is close to inwall, there is higher combination force, but thicker lining makes oil pipe endoporus undergauge, to have to replace minor diameter tubing with major diameter oil pipe, deadweight simultaneously increases, and jointing easily damages in well workover process, fluid can infiltrate interlayer and cause corrosion.
In sum, current various antisepsis oil pipes can play certain anticorrosive, wear-resistant effect both at home and abroad, but due to oil field corrosion and abrasion condition complexity, each technology all exposes the narrow limitation of use, from combination property, improve material and the used thickness of lined with polyethylene, improve the joint easy damage structure of constructing, the body quality that alleviates composite oil pipe is an optional direction of oil pipe development.
Summary of the invention
Object of the present invention is exactly in view of the foregoing defects the prior art has, a kind of three layers of composite oil pipe and making method are provided, make that three layers of composite oil pipe intensity is high, deadweight reduces, anti-inside and outside burn into is wear-resistant, lined with polyethylene layer is thinner but can be with steel pipe well in conjunction with fixing and sealing, make that oil tube buckle is stressed to be reduced, not fragile.
A kind of three layers of composite oil pipe, comprise ring cone gingival cyst of mucous gland in the newborn, intramedullary expansion tapered sleeve in Glass Steel Tube layer, steel pipe layer, polyethylene bushing pipe, taper pipe thread, termination, the two end part of described steel pipe layer are provided with thickening termination, and the outside of thickening termination is provided with taper pipe thread, inner side is provided with ring in the termination of cone structure and bores gingival cyst of mucous gland in the newborn; The inner chamber of described steel pipe layer is provided with polyethylene bushing pipe, and polyethylene bushing pipe and steel pipe layer interference fit, two ends of polyethylene bushing pipe are cone structure, and in two cone structures, be pressed into respectively intramedullary expansion tapered sleeve, in the termination of steel pipe, ring cone gingival cyst of mucous gland in the newborn matches polyethylene bushing pipe is fixed on the inwall of steel pipe layer with intramedullary expansion tapered sleeve; The outer middle side part of described steel pipe layer is Glass Steel Tube layer.
The outside of above-mentioned polyethylene bushing pipe is by intramedullary expansion tapered sleeve, makes in the termination of steel pipe layer ring bore gingival cyst of mucous gland in the newborn and stings into 0.5-1mm.
In above-mentioned termination, ring cone gingival cyst of mucous gland in the newborn is that annular groove and bulge clearance arranged, and convex portion is sharp-pointed structure.
The making method of a kind of three layers of composite oil pipe that the present invention mentions, comprises the following steps:
A) first need to be by the two ends thickening of the steel pipe layer of oil pipe, at the male cone (strobilus masculinus) processing taper pipe thread of thickening termination, screw thread adopts API buttress thread tooth form, for guaranteeing that screw thread screws part interchangeability, ring cone gingival cyst of mucous gland in the newborn in interior inverted cone surface processing termination;
B) adopt size reducing machine and pulling equipment thick by 1 to 2.5mm, external diameter draws in steel pipe layer after being a bit larger tham the polyethylene pipe undergauge of super high molecular weight of steel pipe layer internal diameter of oil pipe, and reserves suitable length at two ends; By undergauge equipment and technology, produce polyethylene bushing pipe, in employing, temperature heating is close together polyethylene bushing pipe and steel pipe layer, forms tube-in-tube structure;
C) with plastic pipe cutting machine, two end-grain cutting of polyethylene bushing pipe are flat, intramedullary expansion tapered sleeve is pressed in polyethylene bushing pipe, polyethylene bushing pipe outside is stung into 0.5-1mm by the termination of steel pipe ring cone gingival cyst of mucous gland in the newborn;
D) two steel tubing couplings are tightened on to the steel pipe layer two ends of oil pipe, are placed in numerical control winding machine, the even cross winding of the glass fibre that soaks fat, on steel oil pipe surface, is formed to Glass Steel Tube layer;
E) teflon seal ring of prefabricated 20-30mm, its internal diameter equates with the internal diameter of polyethylene bushing pipe, external diameter and tubing coupling intermediate section internal diameter interference fit form sealing in the middle of being placed on tubing coupling when oil pipe is installed, and prevent that tubing coupling from corroding and preventing eddy current.
The invention has the beneficial effects as follows: the present invention makes that three layers of composite oil pipe intensity is high, deadweight reduces, anti-inside and outside burn into is wear-resistant, lined with polyethylene layer is thinner but can be with steel pipe well in conjunction with fixing and sealing, make that oil tube buckle is stressed to be reduced, not fragile; And in well workover construction, the problem that flange easily collides with and damages is no longer worried at two ends, has greatly reduced the oil pipe maintenance and repair expense in well workover process, the operation period cost of pipeline reduces greatly.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present invention;
In upper figure: ring cone gingival cyst of mucous gland in the newborn 5, intramedullary expansion tapered sleeve 6 in Glass Steel Tube layer 1, steel pipe layer 2, polyethylene bushing pipe 3, taper pipe thread 4, termination, thickening termination 2.1.
Embodiment
By reference to the accompanying drawings 1, the invention will be further described:
A kind of three layers of composite oil pipe, comprise ring cone gingival cyst of mucous gland in the newborn 5, intramedullary expansion tapered sleeve 6 in Glass Steel Tube layer 1, steel pipe layer 2, polyethylene bushing pipe 3, taper pipe thread 4, termination, the two end part of described steel pipe layer 2 are provided with thickening termination 2.1, and the outside of thickening termination 2.1 is provided with taper pipe thread 4, inner side is provided with ring in the termination of cone structure and bores gingival cyst of mucous gland in the newborn 5; The inner chamber of described steel pipe layer 2 is provided with polyethylene bushing pipe 3, and polyethylene bushing pipe 3 and steel pipe layer 2 interference fit, two ends of polyethylene bushing pipe 3 are cone structure, and be pressed into respectively intramedullary expansion tapered sleeve 6 in two cone structures, the outer middle side part of described steel pipe layer 2 is Glass Steel Tube layer 1, and in the termination of steel pipe, ring cone gingival cyst of mucous gland in the newborn 5 matches polyethylene bushing pipe 3 is fixed on the inwall of steel pipe layer 2 with intramedullary expansion tapered sleeve 6.
Wherein, the outside of polyethylene bushing pipe 3 is by intramedullary expansion tapered sleeve 6, makes in the termination of steel pipe layer ring bore gingival cyst of mucous gland in the newborn 5 and stings into 0.5-1mm.In above-mentioned termination, ring cone gingival cyst of mucous gland in the newborn 5 be annular groove and bulge clearance arrangement, and convex portion is sharp-pointed structure, and the height of gingival cyst of mucous gland in the newborn and tapering depend on material and the thickness of polyethylene pipe layer.Intramedullary expansion tapered sleeve material can be stainless steel, carbon steel degree titanium or duroplasts etc.Polyethylene pipe layer material is ultra-high molecular weight polyethylene, but is not limited only to therewith, can be also other plastics or composite rubber-plastic material.
The making method of a kind of three layers of composite oil pipe that the present invention mentions, comprises the following steps:
A) first need to be by the two ends thickening of the steel pipe layer 2 of oil pipe, at the male cone (strobilus masculinus) processing taper pipe thread 4 of thickening termination 2.1, screw thread adopts API buttress thread tooth form, for guaranteeing that screw thread screws part interchangeability, ring cone gingival cyst of mucous gland in the newborn 5 in interior inverted cone surface processing termination;
B) adopt size reducing machine and pulling equipment thick by 1 to 2.5mm, external diameter draws in steel pipe layer 2 after being a bit larger tham the polyethylene pipe undergauge of super high molecular weight of steel pipe layer 2 internal diameter of oil pipe, and reserves suitable length at two ends; By undergauge equipment and technology, produce polyethylene bushing pipe 3, in employing, temperature heating is close together polyethylene bushing pipe 3 and steel pipe layer 2, forms tube-in-tube structure;
C) with plastic pipe cutting machine, two end-grain cutting of polyethylene bushing pipe 3 are flat, intramedullary expansion tapered sleeve 6 is pressed in polyethylene bushing pipe 3, polyethylene bushing pipe outside is stung into 0.5-1mm by the termination of steel pipe ring cone gingival cyst of mucous gland in the newborn;
D) two steel tubing couplings are tightened on to steel pipe layer 2 two ends of oil pipe, are placed in numerical control winding machine, the even cross winding of the glass fibre that soaks fat, on steel oil pipe surface, is formed to Glass Steel Tube layer 1;
E) teflon seal ring of prefabricated 20-30mm, its internal diameter equates with the internal diameter of polyethylene bushing pipe 3, external diameter and tubing coupling intermediate section internal diameter interference fit, form sealing in the middle of being placed on tubing coupling when oil pipe is installed, and prevents that tubing coupling from corroding and preventing eddy current.
The invention solves the fixing and sealing of thin lining and steel pipe, make oil pipe endoporus undergauge little, needn't replace minor diameter tubing with major diameter oil pipe; Glass Steel Tube layer has been strengthened the withstand voltage tensile strength of oil pipe, thereby thickness that can attenuate steel pipe, Glass Steel Tube layer density is little, intensity is large, deadweight reduces, make in the process of going into the well and well workover process coupling pipe screw thread not fragile, the sealing means of teflon seal ring has prevented that fluid from infiltrating box cupling screw thread, has avoided tubing coupling to corrode and has prevented eddy current.
Claims (4)
1. three layers of composite oil pipe, it is characterized in that: comprise ring cone gingival cyst of mucous gland in the newborn (5), intramedullary expansion tapered sleeve (6) in Glass Steel Tube layer (1), steel pipe layer (2), polyethylene bushing pipe (3), taper pipe thread (4), termination, the two end part of described steel pipe layer (2) are provided with thickening termination (2.1), and the outside of thickening termination (2.1) is provided with taper pipe thread (4), inner side is provided with ring in the termination of cone structure and bores gingival cyst of mucous gland in the newborn (5); The inner chamber of described steel pipe layer (2) is provided with polyethylene bushing pipe (3), and polyethylene bushing pipe (3) and steel pipe layer (2) interference fit, two ends of polyethylene bushing pipe (3) are cone structure, and in two cone structures, be pressed into respectively intramedullary expansion tapered sleeve (6), in the termination of steel pipe, ring cone gingival cyst of mucous gland in the newborn (5) matches polyethylene bushing pipe (3) is fixed on the inwall of steel pipe layer (2) with intramedullary expansion tapered sleeve (6); The outer middle side part of described steel pipe layer (2) is Glass Steel Tube layer (1).
2. three layers of composite oil pipe according to claim 1, is characterized in that: the outside of described polyethylene bushing pipe (3) is by intramedullary expansion tapered sleeve (6), make in the termination of steel pipe layer ring bore gingival cyst of mucous gland in the newborn (5) and sting into 0.5-1mm.
3. three layers of composite oil pipe according to claim 1, is characterized in that: in described termination, ring cone gingival cyst of mucous gland in the newborn (5) is annular groove and bulge clearance arrangement, and convex portion is sharp-pointed structure.
4. a making method for three layers of composite oil pipe as described in any one in claim 1-3, is characterized in that comprising the following steps:
A) first need to be by the two ends thickening of the steel pipe layer (2) of oil pipe, male cone (strobilus masculinus) processing taper pipe thread (4) in thickening termination (2.1), screw thread adopts API buttress thread tooth form, for guaranteeing that screw thread screws part interchangeability, and ring cone gingival cyst of mucous gland in the newborn (5) in interior inverted cone surface processing termination;
B) adopt size reducing machine and pulling equipment thick by 1 to 2.5mm, external diameter draws in steel pipe layer (2) after being a bit larger tham the polyethylene pipe undergauge of super high molecular weight of steel pipe layer (2) internal diameter of oil pipe, and at two ends, reserves suitable length; By undergauge equipment and technology, produce polyethylene bushing pipe (3), in employing, temperature heating is close together polyethylene bushing pipe (3) and steel pipe layer (2), forms tube-in-tube structure;
C) with plastic pipe cutting machine, two end-grain cutting of polyethylene bushing pipe (3) are flat, intramedullary expansion tapered sleeve (6) is pressed in polyethylene bushing pipe (3), polyethylene bushing pipe outside is stung into 0.5-1mm by the termination of steel pipe ring cone gingival cyst of mucous gland in the newborn;
D) two steel tubing couplings are tightened on to steel pipe layer (2) two ends of oil pipe, are placed in numerical control winding machine, the even cross winding of the glass fibre that soaks fat, on steel oil pipe surface, is formed to Glass Steel Tube layer (1);
E) teflon seal ring of prefabricated 20-30mm, its internal diameter equates with the internal diameter of polyethylene bushing pipe (3), external diameter and tubing coupling intermediate section internal diameter interference fit, form sealing in the middle of being placed on tubing coupling when oil pipe is installed, and prevents that tubing coupling from corroding and preventing eddy current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410423790.4A CN104197113A (en) | 2014-08-26 | 2014-08-26 | Three-layer composite oil pipe and manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410423790.4A CN104197113A (en) | 2014-08-26 | 2014-08-26 | Three-layer composite oil pipe and manufacturing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104197113A true CN104197113A (en) | 2014-12-10 |
Family
ID=52082451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410423790.4A Pending CN104197113A (en) | 2014-08-26 | 2014-08-26 | Three-layer composite oil pipe and manufacturing method |
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| Country | Link |
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| CN (1) | CN104197113A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105172175A (en) * | 2015-08-25 | 2015-12-23 | 胜利油田北方实业集团有限责任公司 | Preparation technology of epoxy glass fiber reinforced plastic composite oil pipe |
| GB2560732A (en) * | 2017-03-22 | 2018-09-26 | Radius Systems Ltd | High pressure fitting |
| CN108890235A (en) * | 2018-08-22 | 2018-11-27 | 江苏众信绿色管业科技有限公司 | A kind of steel lining stainless steel channel member and its manufacturing method |
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| CN2409406Y (en) * | 1999-09-06 | 2000-12-06 | 郎丰生 | Sealer of high-density polyethylene pipe joint as lining of steel pipe |
| CN201069021Y (en) * | 2007-08-20 | 2008-06-04 | 张志民 | PE-PPPE-PP enhanced anti-corrosion abrasion-proof composite oil conduit |
| CN102601991A (en) * | 2012-04-01 | 2012-07-25 | 山东胜利职业学院 | Method for manufacturing steel, plastic, glass-fiber three-layer composite pipe |
| CN103395210A (en) * | 2013-07-25 | 2013-11-20 | 周立超 | Production method for rubber-plastic subsea pipeline and connection structure for same |
| CN204083546U (en) * | 2014-08-26 | 2015-01-07 | 东营方宇科技有限责任公司 | A kind of three layers of composite oil pipe |
-
2014
- 2014-08-26 CN CN201410423790.4A patent/CN104197113A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2409406Y (en) * | 1999-09-06 | 2000-12-06 | 郎丰生 | Sealer of high-density polyethylene pipe joint as lining of steel pipe |
| CN201069021Y (en) * | 2007-08-20 | 2008-06-04 | 张志民 | PE-PPPE-PP enhanced anti-corrosion abrasion-proof composite oil conduit |
| CN102601991A (en) * | 2012-04-01 | 2012-07-25 | 山东胜利职业学院 | Method for manufacturing steel, plastic, glass-fiber three-layer composite pipe |
| CN103395210A (en) * | 2013-07-25 | 2013-11-20 | 周立超 | Production method for rubber-plastic subsea pipeline and connection structure for same |
| CN204083546U (en) * | 2014-08-26 | 2015-01-07 | 东营方宇科技有限责任公司 | A kind of three layers of composite oil pipe |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105172175A (en) * | 2015-08-25 | 2015-12-23 | 胜利油田北方实业集团有限责任公司 | Preparation technology of epoxy glass fiber reinforced plastic composite oil pipe |
| GB2560732A (en) * | 2017-03-22 | 2018-09-26 | Radius Systems Ltd | High pressure fitting |
| GB2560732B (en) * | 2017-03-22 | 2021-07-21 | Radius Systems Ltd | High pressure fitting |
| CN108890235A (en) * | 2018-08-22 | 2018-11-27 | 江苏众信绿色管业科技有限公司 | A kind of steel lining stainless steel channel member and its manufacturing method |
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Application publication date: 20141210 |