CN101153674A - Continuously reinforced plastic heat-preserving composite pipeline used for oil field ground and its manufacturing technique - Google Patents
Continuously reinforced plastic heat-preserving composite pipeline used for oil field ground and its manufacturing technique Download PDFInfo
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- CN101153674A CN101153674A CNA2007100561133A CN200710056113A CN101153674A CN 101153674 A CN101153674 A CN 101153674A CN A2007100561133 A CNA2007100561133 A CN A2007100561133A CN 200710056113 A CN200710056113 A CN 200710056113A CN 101153674 A CN101153674 A CN 101153674A
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Abstract
The present invention discloses a continuous reinforced plastic composite pipe and the production technique for buried heat insulation of oil field; the continuous reinforced plastic composite pipe consists of an anticorrosive coating, a reinforced layer and a coating layer; crosslinked polyethylene foamed material is continuously rolled on the continuous reinforced plastic composite pipe to form a continuous insulating course, and fluid sealant layers are respectively coated between the coating layer and the insulating layer, the insulating layer and the protective layer. The reinforced layer is weaved by metal steel wires; the anticorrosive coating and the coating layer are made of crosslinked polyethylene material; the protective layer is made of polyethylene; the insulating course is made of crosslinked polyethylene foam. The pipe of the present invention is a long-distance flexible continuous pipe; the insulating course is made of crosslinked polyethylene flexible material; the continuous reinforced plastic composite pipe has good memory, rebound resilience and concentricity inside and outside the pipeline and ensures that the continuous heat insulation pipeline prevents being squashed after being coiled and buried; thereby the thickness of the insulating course is consistent and achieving better heat insulation effect. The pipeline paved by the invention, even if the local part is damaged, water can be effectively prevented to seep into the insulating course in order to ensure the heat insulation effect.
Description
Technical field:
The present invention relates to the improvement of oil field insulation pipe material and structure, a kind of oil field ground insulation continuous reinforced plastic composite pipe is provided, be used to carry the continuous thermal insulation pipe of liquids and gases, the production technology of its pipeline also is provided simultaneously, belong to the composite metal-plastic pipes production technical field.
Background technique:
In view of northern field area winter climate cold, the soil high water level, salinity is big, factors such as soil structure complexity, the used buried pipeline in oil field gathering and transportation field must carry out corrosion-resistant thermal insulation to be handled, existing buried pipeline is that the compound thermal insulating pipe by every 3～12 meters fixed length is formed by connecting, outer main polyurethane foam or the common polythene foamed material of adopting of the corrosion-resistant thermal insulation of every compound thermal insulating pipe made, in actual process of deployment, because adopt the segmented interface to connect between each compound thermal insulating pipe of whole delivery line, pipeline and thermal insulation layer are discontinuous, therefore, compound thermal insulating pipe has following shortcoming: 1, whole delivery line interface is many, follow-up insulation intractability is big, easily causes outside moisture seepage, after the suction of polyurethane foam insulation material, can progressively permeate the thermal insulation layer of whole pipe, and make it to lose insulation effect.Concentricity was poor when 2, the segmented production technology was assembled, and is difficult concentric when transport pipe assembles with thermal insulation layer, causes the insulation layer thickness inequality, influences heat insulation effect.
Summary of the invention:
The invention provides a kind of oil field ground insulation and use continuous reinforced plastic composite pipe, thermal insulation layer has Memorability, and rebound elasticity is good, and is not yielding.
The invention also discloses the production technology of above-mentioned composite pipe, produce the pipeline of long distance continuously, solve existing compound thermal insulating pipe production technology, transport pipe is concentric poor with the thermal insulation layer assembling, the problem of insulation layer thickness inequality.And when the pipeline local damage, the infiltration of the thermal insulation layer that can effectively prevent to seep water and influence heat insulation effect.
Continuously reinforced plastic heat-preserving composite pipeline used for oil field ground structure of the present invention is as follows: the composite pipe body is successively by 1 anticorrosive coat, 2 enhancement layers, 3 clads, 4 sealant layers, 5 thermal insulation layers, 6 sealant layers, 7 protective layers; it is characterized in that: form continuous reinforced plastic composite pipe by 1 anticorrosive coat, 2 enhancement layers, 3 clads; seam welding forms 5 continuous thermal insulation layers in the continuous winding crosslinked polyethylene foam material on continuous reinforced plastic composite pipe, respectively scribbles one deck (4,6) sealant layer simultaneously between 3 clads and 5 thermal insulation layers and 5 thermal insulation layers and 7 protective layers.
Described enhancement layer forms for the metal braided steel wire, and anticorrosive coat and coating layer material are crosslinked polyethylene, and protective layer material is a polyethylene, and the thermal insulation layer material is the crosslinked polyethylene foam.
Crosslinked polyethylene and polyethylene have good resistance to chemical corrosion, and the crosslinked polyethylene foam is an independent closed pore foaming foaming structure, have advantages such as excellent insulating, Memorability, rebound elasticity are good.
The concrete production technology of used for oil field ground continuous reinforced plastics heat-preserving composite pipe of the present invention is as follows;
With the polyethylene crosslinking grafting of 95～98 weight portions that mix, the polyethylene catalysts masterbatch of 5 weight portions and 1～2 part of polyvinyl hot melt adhesive be by co-extrusion die head, through vacuum sizing and cooling and shaping, and pipe anticorrosive coat 1 in forming;
Coextrusion processes
Machine barrel technology a: district: 60～80 ℃, two districts: 150～160 ℃, three districts: 16～170 ℃, four districts: 160～170 ℃, five districts: 165～170 ℃;
Die head technology: six districts: 165～170 ℃, seven districts: 150～160 ℃, eight districts: 150～160 ℃;
Engine speed: 40～70 rev/mins, hauling speed: 2～3 meters/minute, degree of vacuum: 0.02～0.03MPa;
On anticorrosive coat 1, weave one or more layers steel wire and constitute enhancement layer 2 by knitting machine; outside enhancement layer 2, coat polyethylene clad 3 again; coat very thin one deck sealant layer 4 uniformly at clad 3; vertically continuous winding crosslinked polyethylene foam heat-insulation layer 5 on sealant layer 4; coat very thin one deck sealant layer 6 simultaneously, very thin one deck sealant layer 6 outer compound again one deck 2mm～2.5mm polyethylene protective layers 7 and obtain the present invention.
Good effect of the present invention is: pipeline is that long-distance flexible is managed continuously, thermal insulation layer is the cross-linking polyethylene materials flexible material, has Memorability, rebound elasticity is good, the inside and outside good concentricity of pipeline, guarantee to prevent to flatten after ground is buried in the coiling of continuous insulation pipe, thereby make the thermal insulation layer thickness consistent and reach better heat preservation.Even when utilizing the pipeline local damage that the present invention lays, still can effectively prevent the thermal insulation layer that seeps water, guarantee the heat insulation effect of pipeline.
Insulation pipe reaches better waterproof, heat insulation effect in burying ground oil transportation, water process continuously, reaches the energy saving effect; Material is selected polyethylene and crosslinked polyethylene, has better resistance to chemical corrosion, prolongs pipeline working life, and applying unit reduces safeguards that comprehensive benefit is improved.
Description of drawings
Fig. 1 is a structure principle chart of the present invention.
Embodiment
Embodiment 1
The continuously reinforced plastic heat-preserving composite pipeline used for oil field ground structure as shown in Figure 1; the composite pipe body is followed successively by anticorrosive coat 1, enhancement layer 2, clad 3, sealant layer 4, thermal insulation layer 5, sealant layer 6, protective layer 7; form continuous reinforced plastic composite pipe by anticorrosive coat 1, enhancement layer 2, clad 3; winding crosslinked polyethylene foam material forms continuous thermal insulation layer 5 continuously on continuous reinforced plastic composite pipe, respectively scribbles one deck sealant layer 4,6 simultaneously between clad 3 and thermal insulation layer 5 and thermal insulation layer 5 and protective layer 7.
Described enhancement layer forms for the metal braided steel wire, and anticorrosive coat and coating layer material are crosslinked polyethylene, and protective coating and water-tight cover material are polyethylene, and the thermal insulation layer material is the crosslinked polyethylene foam.
With the polyethylene catalysts masterbatch of the polyethylene crosslinking grafting of 98 weight portions that mix, 5 weight portions and 2 parts of polyvinyl hot melt adhesive by co-extrusion die head, through vacuum sizing and cooling and shaping, pipe anticorrosive coat 1 in forming;
Coextrusion processes
Machine barrel technology a: district: 60～80 ℃, two districts: 150～160 ℃, three districts: 160～170 ℃,
Four districts: 160～170 ℃, five districts: 165～170 ℃;
Die head technology: six districts: 165～170 ℃, seven districts: 150～160 ℃, eight districts: 150～60 ℃;
Engine speed: 40～70 rev/mins, hauling speed: 2～3 meters/minute, degree of vacuum: 0.02～0.03MPa;
On anticorrosive coat 1, weave one or more layers steel wire and constitute enhancement layer 2 by knitting machine; outside enhancement layer 2, coat polyethylene clad 3 again; coat very thin one deck sealant layer 4 uniformly at clad 3; vertically continuous winding crosslinked polyethylene foam heat-insulation layer 5 on sealant layer 4; coat very thin one deck sealant layer 6 simultaneously, very thin one deck sealant layer 6 outer compound again one deck 2mm～2.5mm polyethylene protective layers and obtain the present invention.
Claims (3)
1. an oil field ground is incubated and uses continuous reinforced plastic composite pipe; the composite pipe body is successively by anticorrosive coat (1); enhancement layer (2); clad (3); sealant layer (4); thermal insulation layer (5); sealant layer (6); protective layer (7); it is characterized in that: by anticorrosive coat (1); enhancement layer (2); clad (3) forms continuous reinforced plastic composite pipe; winding crosslinked polyethylene foam material constitutes continuous thermal insulation layer (5) continuously on continuous reinforced plastic composite pipe, respectively scribbles one deck sealant layer (4) simultaneously between clad (3) and thermal insulation layer (5) and thermal insulation layer (5) and protective layer (7); (6).
2. composite pipe according to claim 1 is characterized in that: enhancement layer (2) forms for the metal braided steel wire, and anticorrosive coat (1) and clad (3) are made for cross-linking polyethylene materials, and protective coating (7) is a polyethylene, and thermal insulation layer (5) is the crosslinked polyethylene foam.
3. claim 1 or 2 described technique of composite tube production mainly may further comprise the steps:
With the polyethylene catalysts masterbatch of the polyethylene crosslinking grafting of 95 ~ 98 weight portions that mix, 5 weight portions and 1 ~ 2 part of polyvinyl hot melt adhesive by co-extrusion die head, through vacuum sizing and cooling and shaping, pipe anticorrosive coat in forming;
Coextrusion processes
Machine barrel technology a: district: 60 ~ 80 ℃, two districts: 150 ~ 160 ℃, three districts: 160 ~ 170 ℃, four districts: 160 ~ 170 ℃, five districts: 165 ~ 170 ℃;
Die head technology: six districts: 165 ~ 170 ℃ of seven district: 150 ~ 160 ℃; Eight districts: 150 ~ 160 ℃;
Engine speed: 40 ~ 70 rev/mins, hauling speed: 2～3 meters/minute, degree of vacuum: 0.02～0.03MPa;
Upward weave one or more layers steel wire at anticorrosive coat (1) and constitute enhancement layer (2) by knitting machine; outside enhancement layer (2), coat polyethylene clad (3) again; coat very thin one deck sealant layer (4) uniformly at clad (3); go up vertically winding crosslinked polyethylene foam heat-insulation layer (5) continuously at sealant layer (4); coat very thin one deck sealant layer (4) simultaneously, the outer compound again layer of polyethylene protective layer (7) of very thin one deck sealant layer (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100561133A CN101153674A (en) | 2007-09-28 | 2007-09-28 | Continuously reinforced plastic heat-preserving composite pipeline used for oil field ground and its manufacturing technique |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2007100561133A CN101153674A (en) | 2007-09-28 | 2007-09-28 | Continuously reinforced plastic heat-preserving composite pipeline used for oil field ground and its manufacturing technique |
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| CN101153674A true CN101153674A (en) | 2008-04-02 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101586708B (en) * | 2009-06-25 | 2012-06-27 | 上海交通大学 | Deep-sea oil gas conveying composition pipe and method for producing the same |
| CN102943934A (en) * | 2012-11-09 | 2013-02-27 | 盘锦中际特种管材制造有限公司 | Composite nanometer aerogel anti-corrosion insulation oil tube |
| CN104197116A (en) * | 2014-09-26 | 2014-12-10 | 安徽正石新型建材有限公司 | Steel-plastic composite pipe |
| CN104482328A (en) * | 2014-12-09 | 2015-04-01 | 上海海隆石油化工研究所 | Anticorrosion insulation multilayer system for deep-sea steel delivery pipes |
| CN104708839A (en) * | 2013-12-12 | 2015-06-17 | 南宁市磁汇科技有限公司 | Manufacturing method and equipment for prefabricated polyethylene foamed heat-insulating pipe |
| CN107631130A (en) * | 2017-08-02 | 2018-01-26 | 酷泰克保温科技江苏有限公司 | A kind of deep cooling pipeline cold insulation pipe carrier and conduit saddle construction technology |
| CN109323083A (en) * | 2018-10-30 | 2019-02-12 | 中投（天津）热力股份有限公司 | A kind of efficient, durable heat-insulation pipe manufacturing process |
| CN112113066A (en) * | 2020-09-21 | 2020-12-22 | 徐州中捷环保科技有限公司 | Pipeline outer wall anticorrosion and heat insulation layer and preparation method thereof |
| CN113915423A (en) * | 2020-07-10 | 2022-01-11 | 国家能源投资集团有限责任公司 | Corrosion-resistant pipeline and application |
-
2007
- 2007-09-28 CN CNA2007100561133A patent/CN101153674A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101586708B (en) * | 2009-06-25 | 2012-06-27 | 上海交通大学 | Deep-sea oil gas conveying composition pipe and method for producing the same |
| CN102943934A (en) * | 2012-11-09 | 2013-02-27 | 盘锦中际特种管材制造有限公司 | Composite nanometer aerogel anti-corrosion insulation oil tube |
| CN104708839A (en) * | 2013-12-12 | 2015-06-17 | 南宁市磁汇科技有限公司 | Manufacturing method and equipment for prefabricated polyethylene foamed heat-insulating pipe |
| CN104197116A (en) * | 2014-09-26 | 2014-12-10 | 安徽正石新型建材有限公司 | Steel-plastic composite pipe |
| CN104482328A (en) * | 2014-12-09 | 2015-04-01 | 上海海隆石油化工研究所 | Anticorrosion insulation multilayer system for deep-sea steel delivery pipes |
| CN107631130A (en) * | 2017-08-02 | 2018-01-26 | 酷泰克保温科技江苏有限公司 | A kind of deep cooling pipeline cold insulation pipe carrier and conduit saddle construction technology |
| CN109323083A (en) * | 2018-10-30 | 2019-02-12 | 中投（天津）热力股份有限公司 | A kind of efficient, durable heat-insulation pipe manufacturing process |
| CN113915423A (en) * | 2020-07-10 | 2022-01-11 | 国家能源投资集团有限责任公司 | Corrosion-resistant pipeline and application |
| CN112113066A (en) * | 2020-09-21 | 2020-12-22 | 徐州中捷环保科技有限公司 | Pipeline outer wall anticorrosion and heat insulation layer and preparation method thereof |
| CN112113066B (en) * | 2020-09-21 | 2022-04-08 | 徐州中捷环保科技有限公司 | Pipeline outer wall anticorrosion and heat insulation layer and preparation method thereof |
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Effective date of registration: 20081205 Address after: Jilin province Changchun high tech Zone all hang Road No. 66 post encoding: 130021 Applicant after: Changchun Golsun Special Pipe Co., Ltd. Address before: Jilin province Changchun high-tech development zone all hang Road No. 66 high Cheung special pipeline company limited post encoding: 130021 Applicant before: Li Shichun |
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Owner name: CHANGCHUN GAOXIANG SPECIAL TUBES CO., LTD. Free format text: FORMER OWNER: LI SHICHUN Effective date: 20081205 |
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