CN1309228A - Insulating steel tube and its making technology - Google Patents
Insulating steel tube and its making technology Download PDFInfo
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- CN1309228A CN1309228A CN 01107917 CN01107917A CN1309228A CN 1309228 A CN1309228 A CN 1309228A CN 01107917 CN01107917 CN 01107917 CN 01107917 A CN01107917 A CN 01107917A CN 1309228 A CN1309228 A CN 1309228A
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- steel pipe
- insulating
- steel tube
- shop
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- Rigid Pipes And Flexible Pipes (AREA)
Abstract
An insulating steel pipe for the insulating delivery of petroleum or others is composed of steel pipe and jacket consisting of protecting layer and insulatinig layer. It is made through fixing steel pipe to winding machine, making it rotate for winding the glass fibre dipped with glass epoxy resin around it while spreading flyash and float beads on its surface, and natural solidification. Its advantages are low cost, high compression strength and high insulating effect.
Description
The present invention relates to the mining equipment of petroleum industry, particularly a kind of insulating steel tube and manufacturing process thereof, the various line transportation and the transmission place that are applicable to producing well and crude oil transmission station, oil pipeline and need heat preservation method.
At the oil recovery scene of petroleum industry,, often cooperate thermal recovery technology at present, oil well is carried out tertiary oil recovery for improving the recovery ratio of crude oil.Temperature for pipeline in the temperature that keeps pit shaft inner oil tube in the oil exploitation process and the Crude Oil Transportation process needs to use thermal insulation tubing.Common thermal insulation tubing and heat preservation method have following several: 1, anti-hydrogen evil instlated tubular and high vacuum insulation pipe are to prevent wellbore heat loss in a kind of steam injection process and the instlated tubular that adopts, and its structure is a double-decker, and internal diameter can reach 73mm, vacuumizes in the annular space.Its purpose is for reducing the heat waste of steam in pit shaft in the steam injection process, and the high vacuum insulation pipe is best steam injection tubing string so far, and heat insulation effect is fine.Defective: because anti-hydrogen evil instlated tubular and high vacuum insulation bore are less, be generally 62mm, be not suitable for the handling of extraordinary thickened-oil pump in the thickened oil recovery process, and its cost height, be generally 470 yuan/m, high vacuum insulation pipe price is generally 580 yuan/m, will improve cost for oil production greatly if be applied to the oil extraction of heavy oil wells, and present technique is not declared patent.2, double walled insulated tubing, the patent No.: 95193226.8, this patent is the inside and outside tubing string that is formed by the multistage tubing string.Heat insulation effect is bad, construction trouble, incompatible on-the-spot the needs.3, glass fiber reinforced plastic antiseepage composite thermal-insulating pipe, the patent No. 94213272.6, glass fiber reinforced plastic antiseepage composite thermal-insulating pipe is a kind of jacket structure, waterproof and heat insulation effect are better, but compressive strength is lower, is unsuitable for deep-well oil-extraction.4, direct buried formula is heat preservation pipe prefabricated, the patent No.: 99218385.5, and direct buried formula is heat preservation pipe prefabricated to have waterproof, anti-corrosion function, has increased the application life of steel pipe.Shortcoming is that compressive resistance is too low.5, the insulating tube of lamination layer structure, the patent No.: 94215778.8, this insulating tube is made up of interior pipe, insulation layer, outer tube, increases the composite bed that adopts composition silicate or magnesium silicate to make between interior pipe and insulation layer.That this insulating tube has is high temperature resistant, water proofing property is strong, corrosion-resistant, advantage such as manufacturing process is simple.Shortcoming is that composite bed thickness is too thick, is not suitable for shaft construction.
The objective of the invention is to make a kind of insulating steel tube, and provide manufacturing process, overcome the defective of above-mentioned prior art, make low, the high insulating effect of a kind of cost of production, the insulating steel tube that compressive strength is big, anticorrosion, waterproof, insulation reduce the wellbore heat loss of crude oil in recovery process, improve the temperature in wellbore of crude oil.Increase the internal diameter of insulating tube, make its internal diameter adapt to removing of extraordinary thickened-oil pump in down-hole or downhole tool, can fairly large at the scene use, reduce the crude oil production cost.Make insulating steel tube can not only satisfy the needs of deep-well oil-extraction simultaneously, also can be used for the conveying and the transport service of ground or underground pipeline.
The present technique solution can reach above-mentioned purpose: insulating steel tube of the present invention, form by steel pipe and shell, the shell of steel pipe is to be replaced by insulation layer and topping coatedly to constitute, with the steel pipe adhering and solidifying be one.
The manufacturing process of insulating steel tube of the present invention is steel pipe to be maked somebody a mere figurehead fix and make its energy self rotation on winding mechanism, drive is soaked with the glass wool cloth of glass flake resin and is sent by rotating synchronous speed with steel pipe by walking mechanism, after spilling fly ash float, the shop is wrapped in outside the steel pipe, isolate and make somebody a mere figurehead spontaneous curing.
The insulating steel tube that uses manufacturing process of the present invention to obtain adopts the multilayer composite heat insulating structure, and compressive strength improves greatly.Owing to adopt the glass flake resin solidification, has the performance of anticorrosion heatproof, simultaneously external diameter increase within reason again.This just provides condition for the internal diameter that increases steel pipe, makes the use of down-hole Special Pump or downhole tool become possibility, realizes on-the-spot large-scale application.The insulation corrosion resistance of insulating steel tube of the present invention is strong, can bear the abominable working environment of down-hole.Long service life can reach 3-5 work period, is equivalent to the down-hole service time in 1 to 2 year, has reduced the crude oil production cost.The manufacturing process of insulating steel tube of the present invention is simple, and one-time investment is low, and recovery of the capital is fast, remarkable in economical benefits.
Accompanying drawing 1 is the cross-sectional structure schematic diagram of insulating steel tube of the present invention.
Accompanying drawing 2 is the manufacturing process flow diagram of insulating steel tube of the present invention.
Below in conjunction with embodiment the present invention is done further detailed description: referring to accompanying drawing 1; insulating steel tube; form by steel pipe 3 and shell; the outer shells of steel pipe 3 are to be replaced by insulation layer and topping coatedly to constitute; with steel pipe 3 adhering and solidifying be one; steel pipe 3 among the present invention also can be used other material instead according to actual needs, as iron pipe, plastic pipe etc.Insulation layer is a material by fly ash float, and topping is made up of glass wool cloth dip-coating glass flake resin.The insulation layer shop spreads on the topping; be followed successively by fly ash float, be soaked with the glass wool cloth of glass flake resin; coated layer by layer being bonded in outside the steel pipe 3; can be coated 2,3,4,5 layers until 12 layers; if be applied to ground, be embedded in underground or built on stilts use, also can be coated as required more multi-layered.The manufacturing process of this insulating steel tube is simple, and technological process as shown in Figure 2.Steel pipe 3 is built on stilts fixing and make it can self rotation on winding mechanism, drive is soaked with the glass wool cloth of glass flake resin and is sent by rotating synchronous speed with steel pipe 3 by walking mechanism 4, be wrapped in outside the steel pipe 3 after fly ash float is spilt in the shop, isolate and make somebody a mere figurehead, spontaneous curing.Winding mechanism is made of running roller 1, tube pulling unit 2 and fastening devices, and running roller 1 is by driven by motor, and steel pipe 3 is delivered to tube pulling unit 2 by running roller 1, is pushed by tube pulling unit 2 on the fixed mount of fastening devices, fixes at two ends.Walking mechanism 4 is made up of workbench and movable motor etc., workbench and movable motor are controlled the speed of travel of walking mechanism 4 jointly, immersion liquid groove and shop are housed on the workbench spill case, glass wool cloth is coated with the glass flake resin through the immersion liquid drill traverse earlier, spill the case shop through the shop again and spill fly ash float, deliver to winding mechanism then, She Ji the coated number of plies is twined coated as required.It is built on stilts that coated finishing, insulating steel tube are sent to 5 isolation of curing frame, spontaneous curing.The insulating steel tube that is cured is sent to termination processing frame 6 successively and surfacing frame 7 carries out artificial deburring and repairs processing.Check warehouse-in 8 is last procedures of manufacturing process of the present invention.The insulating steel tube internal diameter made from the present invention is big, compressive strength and high insulating effect, and applied range, manufacturing process is simple, is fit to produce in enormous quantities, and cost is low.
Claims (5)
1, a kind of insulating steel tube comprises steel pipe (3) and shell, it is characterized in that, the shell of steel pipe (3) is to be replaced by insulation layer and topping coatedly to constitute, with steel pipe (3) adhering and solidifying be one.
2, insulating steel tube according to claim 1; it is characterized in that insulation layer is a material by fly ash float; topping is made up of glass wool cloth dip-coating glass flake resin; the insulation layer shop spreads on the topping; be followed successively by fly ash float, be soaked with the glass wool cloth of glass flake resin; coated layer by layer being bonded in outside the steel pipe (3) can the coated bonding number of plies be wherein random layer of 2-12 layer or more multi-layered, and steel pipe (3) also can be used other material substitution.
3, a kind of manufacturing process of making the described insulating steel tube of claim 1, when it is characterized in that making this insulating steel tube, steel pipe (3) is built on stilts fixing and make it can self rotation on winding mechanism, drive is soaked with the glass wool cloth of glass flake resin and is sent by rotating synchronous speed with steel pipe (3) by walking mechanism (4), is wrapped in outside the steel pipe (3) after fly ash float is spilt in the shop.
4, the manufacturing process of insulating steel tube according to claim 3, it is characterized in that winding mechanism is by formations such as running roller (1), tube pulling unit (2) and fastening devicess, running roller (1) is by driven by motor, steel pipe (3) is delivered to tube pulling unit (2) by running roller (1), push on the fixed mount of fastening devices by tube pulling unit (2), fix at two ends.
5, the manufacturing process of insulating steel tube according to claim 3, it is characterized in that walking mechanism (4) is made up of workbench and movable motor etc., workbench and movable motor are controlled the speed of travel of walking mechanism (4) jointly, immersion liquid groove and shop are housed on the workbench spill case, glass wool cloth is coated with the glass flake resin through the immersion liquid drill traverse earlier, spill after case shop spills fly ash float through the shop again, deliver to winding mechanism and twine coated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01107917 CN1309228A (en) | 2001-03-24 | 2001-03-24 | Insulating steel tube and its making technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01107917 CN1309228A (en) | 2001-03-24 | 2001-03-24 | Insulating steel tube and its making technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1309228A true CN1309228A (en) | 2001-08-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01107917 Pending CN1309228A (en) | 2001-03-24 | 2001-03-24 | Insulating steel tube and its making technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1309228A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1303352C (en) * | 2003-03-21 | 2007-03-07 | 上海久通塑胶制品有限公司 | Metal pipe convered with foamed plastic for thermal insulation and its mfg. method |
-
2001
- 2001-03-24 CN CN 01107917 patent/CN1309228A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1303352C (en) * | 2003-03-21 | 2007-03-07 | 上海久通塑胶制品有限公司 | Metal pipe convered with foamed plastic for thermal insulation and its mfg. method |
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| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |