CN204083546U - A kind of three layers of composite oil pipe - Google Patents
A kind of three layers of composite oil pipe Download PDFInfo
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- CN204083546U CN204083546U CN201420483749.1U CN201420483749U CN204083546U CN 204083546 U CN204083546 U CN 204083546U CN 201420483749 U CN201420483749 U CN 201420483749U CN 204083546 U CN204083546 U CN 204083546U
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- pipe
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- steel pipe
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- polyethylene
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- 239000002131 composite material Substances 0.000 title claims abstract description 18
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 50
- 239000010959 steel Substances 0.000 claims abstract description 50
- 239000004698 Polyethylene Substances 0.000 claims abstract description 45
- 229920000573 polyethylene Polymers 0.000 claims abstract description 42
- -1 polyethylene Polymers 0.000 claims abstract description 41
- 206010055018 Gingival cyst Diseases 0.000 claims abstract description 22
- 210000004907 gland Anatomy 0.000 claims abstract description 22
- 239000003365 glass fiber Substances 0.000 claims abstract description 14
- 229920002430 Fibre-reinforced plastic Polymers 0.000 claims abstract description 12
- 230000008719 thickening Effects 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 6
- 230000009467 reduction Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000010276 construction Methods 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000008439 repair process Effects 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 47
- 230000008878 coupling Effects 0.000 description 10
- 238000010168 coupling process Methods 0.000 description 10
- 238000005859 coupling reaction Methods 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 239000003129 oil well Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 description 4
- 239000004809 Teflon Substances 0.000 description 3
- 229920006362 Teflon® Polymers 0.000 description 3
- 230000003260 anti-sepsis Effects 0.000 description 3
- 238000007789 sealing Methods 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
- 238000010438 heat treatment Methods 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
- 238000002386 leaching Methods 0.000 description 2
- 238000004519 manufacturing process Methods 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
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000004804 winding Methods 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
- 238000005299 abrasion Methods 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
- 230000000903 blocking effect Effects 0.000 description 1
- 239000010962 carbon steel Substances 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
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
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Abstract
The utility model relates to a kind of three layers of composite oil pipe.Its technological scheme is: the two end part of steel pipe layer are provided with and thicken termination, and the outside thickening termination is provided with taper pipe thread, and inner side is provided with the termination inner ring cone gingival cyst of mucous gland in the newborn of cone structure; 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 are pressed into intramedullary expansion tapered sleeve respectively in two cone structures, and the outer middle side part of described steel pipe layer is glass fibre reinforced plastics tube layer.Beneficial effect is: the utility model 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 well be combined fixing with steel pipe and seal, and makes the stressed reduction of oil tube buckle, not fragile; And well workover construction in two ends no longer worry flange easily collide with damage problem, greatly reduce the oil pipe maintenance and repair expense in well workover process, the operation period cost of pipeline reduces greatly.
Description
Technical field
The utility model relates to a kind of composite oil pipe and making method, particularly a kind of three layers of composite oil pipe.
Background technique
Because the most of oil field of China enters the tail period stage; oil well corrosion is day by day serious; adverse effect is caused to field produces; the protection of oil well pipe has become the practical problem being badly in need of solving; in recent ten years in order to protect 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 technic all also exists narrow limitation, is 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, peel off; Inside and outside epoxy powder spraying oil pipe, anti-eccentric wear ability is poor, the blocking pit shaft and sprayfused coating easily comes off; Nitrogenize antisepsis oil pipe plasticity reduces, and 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 used for water injection well, and also occurs water injection technology liner scratch in lower instrument process.
2003, Karamay oilfield introduced liner UHMW PE oil pipe from the U.S., and this is the earliest use of 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 uses in the pumping well of 6 mouthfuls of eccentric wears of Dongxing oil fields in Shengli, seriously corroded.Machinery Factory of Shengli Petroleum Administration has introduced wear-resistant, the anti-rotten oil pipe undergauge of liner UHMW PE of external advanced person and port treatment technology and production line in 2004, started to put into serial production and promote in 2005.Promote the use of at triumph, Jiangsu, Henan, Dagang Oilfield etc. at present, by means of superior performance, this product obtains the abundant accreditation of user, is lining into oil pipe endoporus and is recovered by elastic memory, be close to inwall after high density polyethylene (HDPE) undergauge, there is higher combination force, but thicker lining makes oil pipe endoporus undergauge, have to replace minor diameter tubing with large diameter oil tube, increase of simultaneously conducting oneself with dignity, and jointing easily damages in well workover process, fluid can infiltrate interlayer and cause corrosion.
In sum, domestic and international current various antisepsis oil pipe can play certain anticorrosive, wear-resistant effect, but due to oil field corrosion and abrasion condition complexity, each technology all exposes the narrow limitation of use, from combination property, improve the material of lined with polyethylene and use thickness, improving joint and to construct easy damage structure, the body quality alleviating composite oil pipe is an optional direction of oil pipe development.
Model utility content
The purpose of this utility model is exactly in view of the foregoing defects the prior art has, a kind of three layers of composite oil pipe 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 well be combined fixing with steel pipe and seal, make the stressed reduction of oil tube buckle, not fragile.
A kind of three layers of composite oil pipe, comprise glass fibre reinforced plastics tube layer, steel pipe layer, polyethylene bushing pipe, taper pipe thread, termination inner ring cone gingival cyst of mucous gland in the newborn, intramedullary expansion tapered sleeve, the two end part of described steel pipe layer are provided with and thicken termination, and the outside thickening termination is provided with taper pipe thread, inner side is provided with the termination inner ring cone gingival cyst of mucous gland in the newborn of cone structure; 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 being pressed into intramedullary expansion tapered sleeve respectively in two cone structures, the termination inner ring cone gingival cyst of mucous gland in the newborn of steel pipe matches with intramedullary expansion tapered sleeve and is fixed on the inwall of steel pipe layer by polyethylene bushing pipe; The outer middle side part of described steel pipe layer is glass fibre reinforced plastics tube layer.
The outside of above-mentioned polyethylene bushing pipe, by intramedullary expansion tapered sleeve, makes the termination inner ring cone gingival cyst of mucous gland in the newborn of steel pipe layer sting into 0.5-1mm.
Above-mentioned termination inner ring cone gingival cyst of mucous gland in the newborn is that annular groove and bulge clearance arrange, and convex portion is pointed structures.
The making method of a kind of three layers of composite oil pipe that the utility model is mentioned, comprises the following steps:
A) first thickeied needing at the two ends of the steel pipe layer of oil pipe, thickening the male cone (strobilus masculinus) processing taper pipe thread of termination, screw thread adopts API buttress thread tooth form, for ensureing threaded engagement part interchangeability, and interior inverted cone surface processing termination inner ring cone gingival cyst of mucous gland in the newborn;
B) adopt size reducing machine and pulling equipment 1 to 2.5mm is thick, external diameter draws in steel pipe layer after being a bit larger tham the polyethylene pipe undergauge of the super high molecular weight of the steel pipe layer internal diameter of oil pipe, and reserves suitable length at two ends; Produce polyethylene bushing pipe by undergauge equipment and technology, in employing, temperature heating makes polyethylene bushing pipe and steel pipe layer be close together, and forms tube-in-tube structure;
C) put down with two end-grain cutting of plastic pipe cutting machine by polyethylene bushing pipe, by intramedullary expansion tapered sleeve press-in polyethylene bushing pipe, make to be stung into 0.5-1mm by the termination ring cone gingival cyst of mucous gland in the newborn of steel pipe outside polyethylene bushing pipe;
D) two steel tubing couplings are tightened on the steel pipe layer two ends of oil pipe, are placed in numerical control winding machine, the glass fibre uniform crossover of leaching fat is wrapped in steel oil pipe surface, forms glass fibre reinforced plastics tube layer;
E) teflon seal ring of prefabricated 20-30mm, its internal diameter is equal with the internal diameter of polyethylene bushing pipe, external diameter and tubing coupling intermediate section internal diameter interference fit, is placed in the middle of tubing coupling and forms sealing, prevent tubing coupling from corroding and prevent eddy current when installing oil pipe.
The beneficial effects of the utility model are: the utility model 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 well be combined fixing with steel pipe and seal, make the stressed reduction of oil tube buckle, not fragile; And well workover construction in two ends no longer worry flange easily collide with damage problem, greatly reduce 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 utility model;
In upper figure: glass fibre reinforced plastics tube layer 1, steel pipe layer 2, polyethylene bushing pipe 3, taper pipe thread 4, termination inner ring cone gingival cyst of mucous gland in the newborn 5, intramedullary expansion tapered sleeve 6, thicken termination 2.1.
Embodiment
By reference to the accompanying drawings 1, the utility model will be further described:
A kind of three layers of composite oil pipe, comprise glass fibre reinforced plastics tube layer 1, steel pipe layer 2, polyethylene bushing pipe 3, taper pipe thread 4, termination inner ring cone gingival cyst of mucous gland in the newborn 5, intramedullary expansion tapered sleeve 6, the two end part of described steel pipe layer 2 are provided with and thicken termination 2.1, and the outside thickening termination 2.1 is provided with taper pipe thread 4, inner side is provided with the termination inner ring cone gingival cyst of mucous gland in the newborn 5 of cone structure; 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 intramedullary expansion tapered sleeve 6 respectively in two cone structures, the outer middle side part of described steel pipe layer 2 is glass fibre reinforced plastics tube layer 1, and the termination inner ring cone gingival cyst of mucous gland in the newborn 5 of steel pipe matches with intramedullary expansion tapered sleeve 6 and to be fixed on the inwall of steel pipe layer 2 by polyethylene bushing pipe 3.
Wherein, the outside of polyethylene bushing pipe 3, by intramedullary expansion tapered sleeve 6, makes the termination inner ring cone gingival cyst of mucous gland in the newborn 5 of steel pipe layer sting into 0.5-1mm.Above-mentioned termination inner ring cone gingival cyst of mucous gland in the newborn 5 is that annular groove and bulge clearance arrange, and convex portion is pointed structures, and the height of gingival cyst of mucous gland in the newborn and tapering depend on material and the thickness of polyethylene tube 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, also can be other plastics or composite rubber-plastic material.
The making method of a kind of three layers of composite oil pipe that the utility model is mentioned, comprises the following steps:
A) first thickeied needing at the two ends of the steel pipe layer 2 of oil pipe, thickening the male cone (strobilus masculinus) processing taper pipe thread 4 of termination 2.1, screw thread adopts API buttress thread tooth form, for ensureing threaded engagement part interchangeability, and interior inverted cone surface processing termination inner ring cone gingival cyst of mucous gland in the newborn 5;
B) adopt size reducing machine and pulling equipment 1 to 2.5mm is thick, external diameter draws in steel pipe layer 2 after being a bit larger tham the polyethylene pipe undergauge of the super high molecular weight of steel pipe layer 2 internal diameter of oil pipe, and reserves suitable length at two ends; Produce polyethylene bushing pipe 3 by undergauge equipment and technology, in employing, temperature heating makes polyethylene bushing pipe 3 and steel pipe layer 2 be close together, and forms tube-in-tube structure;
C) put down with two end-grain cutting of plastic pipe cutting machine by polyethylene bushing pipe 3, intramedullary expansion tapered sleeve 6 is pressed in polyethylene bushing pipe 3, make to be stung into 0.5-1mm by the termination ring cone gingival cyst of mucous gland in the newborn of steel pipe outside polyethylene bushing pipe;
D) two steel tubing couplings are tightened on steel pipe layer 2 two ends of oil pipe, are placed in numerical control winding machine, the glass fibre uniform crossover of leaching fat is wrapped in steel oil pipe surface, forms glass fibre reinforced plastics tube layer 1;
E) teflon seal ring of prefabricated 20-30mm, its internal diameter is equal with the internal diameter of polyethylene bushing pipe 3, external diameter and tubing coupling intermediate section internal diameter interference fit, be placed on when installing oil pipe in the middle of tubing coupling and form sealing, prevent tubing coupling from corroding and prevent eddy current.
The utility model solves the fixing of thin lining and steel pipe and seal, makes oil pipe endoporus undergauge not quite, need not replace minor diameter tubing with large diameter oil tube; Glass fibre reinforced plastics tube layer strengthens the withstand voltage tensile strength of oil pipe, thus can the thickness of thinning steel pipe, glass fibre reinforced plastics tube layer density is little, intensity is large, deadweight reduces, make coupling pipe screw thread in the process of going into the well and well workover process not fragile, the sealing means of teflon seal ring prevents fluid to infiltrate box cupling screw thread, avoids tubing coupling and corrodes and prevent eddy current.
Claims (3)
1. three layers of composite oil pipe, it is characterized in that: comprise glass fibre reinforced plastics tube layer (1), steel pipe layer (2), polyethylene bushing pipe (3), taper pipe thread (4), termination inner ring cone gingival cyst of mucous gland in the newborn (5), intramedullary expansion tapered sleeve (6), the two end part of described steel pipe layer (2) are provided with and thicken termination (2.1), and the outside thickening termination (2.1) is provided with taper pipe thread (4), inner side is provided with termination inner ring cone gingival cyst of mucous gland in the newborn (5) of cone structure; 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 being pressed into intramedullary expansion tapered sleeve (6) respectively in two cone structures, match with intramedullary expansion tapered sleeve (6) and be fixed on the inwall of steel pipe layer (2) by polyethylene bushing pipe (3) in termination inner ring cone gingival cyst of mucous gland in the newborn (5) of steel pipe; The outer middle side part of described steel pipe layer (2) is glass fibre reinforced plastics 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), by intramedullary expansion tapered sleeve (6), makes termination inner ring cone gingival cyst of mucous gland in the newborn (5) of steel pipe layer sting into 0.5-1mm.
3. three layers of composite oil pipe according to claim 1, is characterized in that: described termination inner ring cone gingival cyst of mucous gland in the newborn (5) is that annular groove and bulge clearance arrange, and convex portion is pointed structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420483749.1U CN204083546U (en) | 2014-08-26 | 2014-08-26 | A kind of three layers of composite oil pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420483749.1U CN204083546U (en) | 2014-08-26 | 2014-08-26 | A kind of three layers of composite oil pipe |
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| Publication Number | Publication Date |
|---|---|
| CN204083546U true CN204083546U (en) | 2015-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420483749.1U Expired - Fee Related CN204083546U (en) | 2014-08-26 | 2014-08-26 | A kind of three layers of composite oil pipe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104197113A (en) * | 2014-08-26 | 2014-12-10 | 东营方宇科技有限责任公司 | Three-layer composite oil pipe and manufacturing method |
-
2014
- 2014-08-26 CN CN201420483749.1U patent/CN204083546U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104197113A (en) * | 2014-08-26 | 2014-12-10 | 东营方宇科技有限责任公司 | Three-layer composite oil pipe and manufacturing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150107 |