CN107351344A - The nonmetallic oil pipe preparation method that a kind of oil gas field uses - Google Patents

The nonmetallic oil pipe preparation method that a kind of oil gas field uses Download PDF

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Publication number
CN107351344A
CN107351344A CN201710590329.1A CN201710590329A CN107351344A CN 107351344 A CN107351344 A CN 107351344A CN 201710590329 A CN201710590329 A CN 201710590329A CN 107351344 A CN107351344 A CN 107351344A
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China
Prior art keywords
pipe
box cupling
layer pipe
enhancement layer
finished product
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Application number
CN201710590329.1A
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CN107351344B (en
Inventor
王焕
许军
薛玉生
苟建升
张斌
胥掌世
李正宇
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Shaanxi Rewin Petroleum Technology Co Ltd
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Shaanxi Rewin Petroleum Technology Co Ltd
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Priority to CN201710590329.1A priority Critical patent/CN107351344B/en
Publication of CN107351344A publication Critical patent/CN107351344A/en
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Publication of CN107351344B publication Critical patent/CN107351344B/en
Expired - Fee Related legal-status Critical Current
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
    • B29C48/151—Coating hollow articles
    • B29C48/152—Coating hollow articles the inner surfaces thereof
    • B29C48/153—Coating both inner and outer surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/18—Polymers of hydrocarbons having four or more carbon atoms, e.g. polymers of butylene, e.g. PB, i.e. polybutylene

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

The nonmetallic oil pipe preparation method that a kind of oil gas field uses, including body and box cupling, body and box cupling include refractory layer pipe, middle enhancement layer pipe and anticorrosive coat pipe, refractory layer pipe be molecular weight 150~3,200,000 the heat-proof macromolecule polymer that is polymerized under rigid catalyst of polyethylene or butadiene, middle enhancement layer pipe by resistance to mesohigh glass fibre, enhanced polyester fiber, aramid fiber, polyethylene fibre and netted high-tensile steel wires collectively constitute, anticorrosive coat pipe is polyethylene of the molecular weight 250~4,200,000, the refractory layer bore of body is d and its anticorrosive coat pipe external diameter is D and its length is L, middle enhancement layer bore is equal to refractory layer pipe external diameter and its external diameter is equal to anticorrosive coat bore, L is provided with body anticorrosive coat pipe both ends1Outer cone boss, the L of the length of box cupling >=21And female cone boss is set in its refractory layer pipe, outer cone boss or female cone boss prepare taper pipe thread by screw thread compression molding.

Description

The nonmetallic oil pipe preparation method that a kind of oil gas field uses
Technical field
The invention belongs to exploitation of oil-gas field equipment technical field, prepared by the nonmetallic oil pipe that especially a kind of oil gas field uses Method.
Background technology
The oil pipe that oil gas field uses at present is processed into using seamless steel pipe, and oil pipe includes body and box cupling, each body Between mutually concatenation sealing implemented by the inner cone pipe screw thread at box cupling both ends, easily cause oil pipe abrasion, burn into use Phenomena such as tube wall incrustation and Taper Pipe screw thread damage, these phenomenons cause frequent well workover, and frequently well workover then reduces production of hydrocarbons Efficiency, cause the increase of oil-gas mining cost.
Oil pipe is easy to wear, use carries out coating treatment more in its inwall at present for corrosion and tube wall incrustation, due to inboard wall of tube body Derusting work be difficult to accomplish clean, thorough, cause inside coating adhesive force low, especially the low painting of adhesive force in use Layer can gradually be peeled off, departed from, and the coating impurity split away off even may also result in holddown, produce new well workover problem.
Also have and install polyethylene liner additional in inboard wall of tube body to solve to wear, corrode and tube wall incrustation, but due to liner material And install the reasons such as technique additional, liner and the bad factor of body abutment be present, easily produce inner liner and peel off, release, use The problems such as life-span is unstable.In addition installing liner additional needs and the requirement of processing clean to inner surface of tube body processing high, interior during installation Lining needs the cumbersome technique such as undergauge, poling, heating, flange, and the manufacturing cost for installing liner additional is high.
The content of the invention
To solve the above problems, the invention provides the nonmetallic oil pipe preparation method that a kind of oil gas field uses, this method The nonmetallic oil pipe prepared has excellent mechanical property, antiseptic property, anti-wear performance, thermal property, can extensive use In oil gas field, production cost and maintenance cost are reduced, improves oil gas field production efficiency.
For achieving the above object, the present invention adopts the following technical scheme that：
The nonmetallic oil pipe preparation method that a kind of oil gas field uses, nonmetallic oil pipe include body and box cupling, body it is interior Footpath, external diameter and length dimension are performed by oil gas field standard used in connection with, and box cupling implements Butt sealing, preparation method to two bodys Using to screw extruder, screw thread moulding press, it is characterized in that：
Body and box cupling include refractory layer pipe, middle enhancement layer pipe and anticorrosive coat pipe, refractory layer pipe and existed by molecular weight The heat-proof macromolecule polymer composition that 150~3,200,000 polyethylene or butadiene is polymerized under rigid catalyst, Middle enhancement layer pipe is by the glass fibre of resistance to mesohigh, enhanced polyester fiber, aramid fiber, polyethylene fibre and netted high strength steel Silk is collectively constituted, and anticorrosive coat pipe is made up of molecular weight in 250~4,200,000 polyethylene；
The refractory layer bore of body is set as d and its anticorrosive coat pipe external diameter is set as D and its length is set as L, middle The internal diameter of enhancement layer pipe is equal to the external diameter of refractory layer pipe, and the external diameter of middle enhancement layer pipe is equal to the internal diameter of anticorrosive coat pipe, in body The both ends of anticorrosive coat pipe are L provided with length1Outer cone boss, L1Less than L, each outer cone boss is molded by screw thread Shaping preparation has outer taper pipe thread；Length >=2L of box cupling1, female cone boss is provided with the refractory layer pipe of box cupling, it is each described Female cone boss internal diameter is prepared by screw thread compression molding entire body inner cone pipe screw thread, and the nominal bore diameter of inner cone pipe screw thread is equal to outer The nominal outside diameter of taper pipe thread, by the outer taper pipe threads of adjacent two bodys of the entire body endosiphuncular tube thread connection of box cupling and with this Analogize；
When preparing body：
1. polyethylene or butadiene and rigid catalyst are placed in high speed agitator, high-speed stirred 3~30 minutes Discharging obtains heat-proof macromolecule polymer afterwards, is then dried for standby heat-proof macromolecule polymer；
2. middle enhancement layer pipe is cleaned up and preheated 5 minutes at 30~60 DEG C, then in middle enhancement layer pipe Surfaces externally and internally uniformly coat cool down after binding resin it is standby；
3. by middle enhancement layer pipe sleeve on the design attitude of screw extruder, by screw extruder by heat-proof macromolecule Polymer is squeezed in the endoporus of middle enhancement layer pipe, is cooled down in mould and is made the wall thickness control of inner tube in 0.6~3.5mm, cooling Semi-finished product body is prepared by more than L progress excision formings afterwards, the internal diameter of the semi-finished product body should meet the d；
4. the semi-finished product in 3. are enclosed on the design attitude of screw extruder, by screw extruder by polyethylene Squeeze middle enhancement layer pipe it is cylindrical in, cooling down in mould simultaneously makes the wall thickness control of inner tube press institute after 1.2~5.4mm, cooling State L progress excision formings and prepare finished product body, the external diameter of the finished product body should meet the D；
Possess it is above-mentioned 1.~2. under the conditions of prepare box cupling when：
5. by middle enhancement layer pipe sleeve on the design attitude of screw extruder, by screw extruder by heat-proof macromolecule Polymer is squeezed in the endoporus of middle enhancement layer pipe, is cooled down in mould and is made the wall thickness control of inner tube in 0.6~3.5mm, cooling Semi-finished product box cupling is prepared by more than L progress excision formings afterwards, the internal diameter of the semi-finished product box cupling should be less than the D；
6. the semi-finished product box cupling in 5. is enclosed on the design attitude of screw extruder, will be poly- by screw extruder Ethene squeeze middle enhancement layer pipe it is cylindrical in, cooling down in mould simultaneously makes the wall thickness control of inner tube after 1.2~5.4mm, cooling By >=2L1Carry out excision forming and prepare finished product box cupling；
It is L that the finished product body or the finished product box cupling, which are individually placed to prepare both ends on screw thread moulding press,1's Outer taper pipe thread body or >=2L1Endosiphuncular tube threaded collar joint, it is desirable to body and box cupling are provided with following technical performance：
Long-term hydrostatic strength >=15MPa of body and box cupling；
Tensile strength >=126MPa of body and box cupling and yield strength control at 105~134MPa [25 DEG C]；
The heatproof softening point of body and box cupling reaches 150 DEG C；
The density of texture of body and box cupling is controlled in 0.941~1.56g/cm3。
Above-mentioned rigid catalyst is the rigid polymer with binding function group and hole.
Above-mentioned netted high-tensile steel wires are the Wrapping formed network structures of steel wire left-and-right spiral, or steel wire winding shaping Helicoidal structure.
Due to using technical scheme as described above, the present invention produces following good effect：
1st, the body of oil pipe of the present invention and box cupling its wearability are 4 times of ordinary steel body and box cupling, through measuring and calculating than common The transfer efficiency of steel tube body and box cupling can improve 20% or so.
2nd, the heat-proof macromolecule that refractory layer pipe is polymerized by polyethylene or butadiene under rigid catalyst gathers Compound, the heat resistance of body and box cupling can be significantly improved.
3rd, the body of oil pipe of the present invention and box cupling density are only 1/5th or so of ordinary steel body and box cupling density, but Coefficient of friction is only 1/6th or so of ordinary steel body and box cupling.
4th, the outer taper pipe thread of body and the inner cone pipe screw thread of box cupling meet relevant criterion, do not change the existing work of oil gas field Industry technique.
5th, preparation method of the invention is simple, easy to operate, equipment investment is small, is easy to large-scale production, can save big dimension Material, mitigate the manipulation strength of oil gas field worker, be useful in very much oil gas field and promote the use of.
Brief description of the drawings
Fig. 1 is the axial diagrammatic cross-sectional view of the present invention.
Fig. 2 is the radial direction diagrammatic cross-sectional view of body of the present invention.
In above-mentioned figure：1- bodys；1.1- refractory layer pipes；Enhancement layer pipe among 1.2-；1.3- anticorrosive coat pipes；2- box cuplings.
Embodiment
The present invention is the nonmetallic oil pipe preparation method that a kind of oil gas field uses, and the nonmetallic oil pipe that oil gas field uses includes Body and box cupling, body and box cupling are the inseparable entirety of oil pipe, and only nonmetallic body and nonmetallic box cupling could be formed Nonmetallic oil pipe, this is also that body and box cupling are combined into one one of the reasons why stating altogether by the present invention.
The preparation method of the present invention uses screw extruder, screw thread moulding press, and screw extruder and screw thread moulding press are equal For conventional equipment and commercially available.
With reference to Fig. 1-2, nonmetallic oil pipe of the invention includes body 1 and box cupling 2, internal diameter, external diameter and the length ruler of body 1 Very little to be performed by oil gas field standard used in connection with, box cupling 2 implements Butt sealing to two bodys.Body 1 and box cupling 2 include resistance to Thermosphere pipe 1.1, middle enhancement layer pipe 1.2 and anticorrosive coat pipe 1.3, refractory layer pipe 1.1 is by poly- second of the molecular weight 150~3,200,000 The heat-proof macromolecule polymer composition that alkene or butadiene are polymerized under rigid catalyst, the rigid catalyst are Rigid polymer with binding function group and hole.Glass fibre, enhanced polyester of the middle enhancement layer pipe 1.2 by resistance to mesohigh Fiber, aramid fiber, polyethylene fibre and netted high-tensile steel wires collectively constitute, and the netted high-tensile steel wires are steel wire left-and-right spirals Wrapping formed network structure, or the helicoidal structure of steel wire winding shaping.Anticorrosive coat pipe 1.3 is by molecular weight 250~420 Ten thousand polyethylene composition.Refractory layer pipe 1.1, middle enhancement layer pipe 1.2 and anticorrosive coat pipe 1.3 form integral structure, although its Intensity index is slightly below metal oil conduit, but it combines fine and close, firmly, is not in layering and peeling and in light weight, complete The use of full up sufficient oil gas field.
Utilize ultra-high molecular weight polyethylene or the butadiene material such as have good anti-corrosion, wear-resisting, self-lubricating, surface smooth Expect characteristic, can solve the problems such as abrasion, corrosion and scaling of nonmetallic oil pipe, improve resistance to compression and the pull resistance of nonmetallic oil pipe Energy.
The internal diameter of refractory layer pipe 1.1 of body 1 is set as d and its external diameter of anticorrosive coat pipe 1.3 is set as D and its length is set as L, preferable body refers to outer diameter D=φ 73mm and it refers to internal diameter d=φ 62mm.The internal diameter of middle enhancement layer pipe 1.2 is equal to The external diameter of refractory layer pipe 1.1, the external diameter of middle enhancement layer pipe 1.2 is equal to the internal diameter of anticorrosive coat pipe 1.3, in the anticorrosive coat pipe of body 1 1.3 both ends are L provided with length1Outer cone boss, L1Less than L, each outer cone boss passes through screw thread compression molding system Have outer taper pipe thread.
The length of box cupling is more than 2L1, female cone boss is provided with the refractory layer pipe 1.1 of box cupling 2, each female cone is convex Platform internal diameter is prepared by screw thread compression molding entire body inner cone pipe screw thread, and the nominal bore diameter of inner cone pipe screw thread is equal to outer taper pipe thread Nominal outside diameter, pass through outer taper pipe thread of entire body endosiphuncular tube two bodys of thread connection of box cupling and so on.Box cupling can Depending on above-mentioned preferable body size, the outside dimension of box cupling is defined by not interfered with existing sleeve pipe, oil well pump.
The present invention is when preparing body：
1. polyethylene and butadiene and rigid catalyst are placed in high speed agitator, high-speed stirred is after 3~30 minutes Discharging obtains heat-proof macromolecule polymer, is then dried for standby heat-proof macromolecule polymer.
2. middle enhancement layer pipe is cleaned up and preheated 5 minutes at 30~60 DEG C, then in middle enhancement layer pipe Surfaces externally and internally uniformly coat cool down after binding resin it is standby.
3. by middle enhancement layer pipe sleeve on the design attitude of screw extruder, by screw extruder by heat-proof macromolecule Polymer is squeezed in the endoporus of middle enhancement layer pipe, is cooled down in mould and is made the wall thickness control of inner tube in 0.6~3.5mm, cooling Semi-finished product body is prepared by more than L progress excision formings afterwards, the internal diameter of the semi-finished product body should meet the d.
4. the semi-finished product in 3. are enclosed on the design attitude of screw extruder, by screw extruder by polyethylene Squeeze middle enhancement layer pipe it is cylindrical in, cooling down in mould simultaneously makes the wall thickness control of inner tube press institute after 1.2~5.4mm, cooling State L progress excision formings and prepare finished product body, the external diameter of the finished product body should meet the D.Chilling temperature presses spiral shell in mould Bar extruder conventional arrangement.
Possess it is above-mentioned 1.~2. under the conditions of prepare box cupling when：
5. by middle enhancement layer pipe sleeve on the design attitude of screw extruder, by screw extruder by heat-proof macromolecule Polymer is squeezed in the endoporus of middle enhancement layer pipe, is cooled down in mould and is made the wall thickness control of inner tube in 0.6~3.5mm, cooling Semi-finished product box cupling is prepared by more than L progress excision formings afterwards, the internal diameter of the semi-finished product box cupling should be less than the D.
6. the semi-finished product box cupling in 5. is enclosed on the design attitude of screw extruder, will be poly- by screw extruder Ethene squeeze middle enhancement layer pipe it is cylindrical in, cooling down in mould simultaneously makes the wall thickness control of inner tube after 1.2~5.4mm, cooling By >=2L1Carry out excision forming and prepare finished product box cupling.
Actually the preparation process of finished product box cupling is as indicated in finished product body, and only the inside/outside diameter size of finished product box cupling is big In the inside/outside diameter size of finished product body, other relative dimensions such as inner cone pipe screw thread are carried out in the following manner.
It is L that the finished product body or the finished product box cupling, which are individually placed to prepare both ends on screw thread moulding press,1's Outer taper pipe thread body or >=2L1Endosiphuncular tube threaded collar joint, it is desirable to body and box cupling are provided with following technical performance：
Long-term hydrostatic strength >=15MPa of body and box cupling；
Tensile strength >=126MPa of body and box cupling and yield strength control at 105~134MPa [25 DEG C]；
The heatproof softening point of body and box cupling reaches 150 DEG C；
The density of texture of body and box cupling is controlled in 0.941~1.56g/cm3。
The present invention is in preparation process：Ultrasonic scanning device, rice remeasurement control dress are provided with its each production line Put, the wall thickness monitoring full-automatic computer control system such as controller, and dynamic control carried out to body and box cupling in preparation process, To ensure the quality of production of nonmetallic oil pipe.

Claims (3)

1. the nonmetallic oil pipe preparation method that a kind of oil gas field uses, nonmetallic oil pipe includes body and box cupling, the internal diameter of body, External diameter and length dimension are performed by oil gas field standard used in connection with, and box cupling implements Butt sealing to two bodys, and preparation method makes Screw extruder, screw thread moulding press are used, it is characterized in that：
Body (1) and box cupling (2) include refractory layer pipe (1.1), middle enhancement layer pipe (1.2) and anticorrosive coat pipe (1.3), resistance to Thermosphere pipe by molecular weight 150~3,200,000 polyethylene or butadiene be polymerized under rigid catalyst it is heat-resisting High molecular polymer forms, and middle enhancement layer pipe is by the glass fibre of resistance to mesohigh, enhanced polyester fiber, aramid fiber, polyethylene Fiber and netted high-tensile steel wires are collectively constituted, and anticorrosive coat pipe is made up of molecular weight in 250~4,200,000 polyethylene；
The refractory layer bore of body is set as d and its anticorrosive coat pipe external diameter is set as D and its length is set as L, and centre is strengthened The internal diameter of layer pipe is equal to the external diameter of refractory layer pipe, and the external diameter of middle enhancement layer pipe is equal to the internal diameter of anticorrosive coat pipe, in body anti-corrosion The both ends of layer pipe are L provided with length1Outer cone boss, L1Less than L, each outer cone boss passes through screw thread compression molding Preparation has outer taper pipe thread；Length >=2L of box cupling1, female cone boss is provided with the refractory layer pipe of box cupling, each inner circle Cone boss internal diameter is prepared by screw thread compression molding entire body inner cone pipe screw thread, and the nominal bore diameter of inner cone pipe screw thread is equal to outer Taper Pipe The nominal outside diameter of screw thread, by the outer taper pipe threads of adjacent two bodys of the entire body endosiphuncular tube thread connection of box cupling and with such Push away；
When preparing body：
1. polyethylene or butadiene and rigid catalyst are placed in high speed agitator, high-speed stirred goes out after 3~30 minutes Material obtains heat-proof macromolecule polymer, is then dried for standby heat-proof macromolecule polymer；
2. middle enhancement layer pipe is cleaned up and preheated 5 minutes at 30~60 DEG C, then inside and outside middle enhancement layer pipe Surface uniformly coat cool down after binding resin it is standby；
3. by middle enhancement layer pipe sleeve on the design attitude of screw extruder, heat-proof macromolecule is polymerize by screw extruder Thing is squeezed in the endoporus of middle enhancement layer pipe, is cooled down in mould and the wall thickness control of inner tube is pressed after 0.6~3.5mm, cooling Excision forming is carried out more than the L and prepares semi-finished product body, and the internal diameter of the semi-finished product body should meet the d；
4. the semi-finished product in 3. are enclosed on the design attitude of screw extruder, polyethylene is squeezed by screw extruder Middle enhancement layer pipe it is cylindrical in, cooling down in mould simultaneously makes the wall thickness control of inner tube enter after 1.2~5.4mm, cooling by the L Row excision forming prepares finished product body, and the external diameter of the finished product body should meet the D；
Possess it is above-mentioned 1.~2. under the conditions of prepare box cupling when：
5. by middle enhancement layer pipe sleeve on the design attitude of screw extruder, heat-proof macromolecule is polymerize by screw extruder Thing is squeezed in the endoporus of middle enhancement layer pipe, is cooled down in mould and the wall thickness control of inner tube is pressed after 0.6~3.5mm, cooling Excision forming is carried out more than the L and prepares semi-finished product box cupling, and the internal diameter of the semi-finished product box cupling should be less than the D；
6. the semi-finished product box cupling in 5. is enclosed on the design attitude of screw extruder, by screw extruder by polyethylene Squeeze middle enhancement layer pipe it is cylindrical in, cool down in mould and make the wall thickness control of inner tube after 1.2~5.4mm, cooling by >= 2L1Carry out excision forming and prepare finished product box cupling；
It is L that the finished product body or the finished product box cupling, which are individually placed to prepare both ends on screw thread moulding press,1Outer Taper Pipe Screw-thread pipe body or >=2L1Endosiphuncular tube threaded collar joint, it is desirable to body and box cupling are provided with following technical performance：
Long-term hydrostatic strength >=15MPa of body and box cupling；
Tensile strength >=126MPa of body and box cupling and yield strength control at 105~134MPa [25 DEG C]；
The heatproof softening point of body and box cupling reaches 150 DEG C；
The density of texture of body and box cupling is controlled in 0.941~1.56g/cm3。
2. the nonmetallic oil pipe preparation method that a kind of oil gas field uses according to claim 1, it is characterized in that：Rigid catalyst It is the rigid polymer with binding function group and hole.
3. the nonmetallic oil pipe preparation method that a kind of oil gas field uses according to claim 1, it is characterized in that：Netted high intensity Steel wire is the Wrapping formed network structure of steel wire left-and-right spiral, or the helicoidal structure of steel wire winding shaping.
CN201710590329.1A 2017-07-20 2017-07-20 A kind of nonmetallic oil pipe preparation method that oil gas field uses Expired - Fee Related CN107351344B (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1562623A (en) * 2004-03-23 2005-01-12 孙建宁 Flame retardant antistatic high intension and tough composite tube made from polyvinyl chloride and preparation method
CN101992555A (en) * 2010-11-05 2011-03-30 赵树辉 Processing method of net framework enhanced plastic composite pipe and manufactured composite pipe
WO2014070034A1 (en) * 2012-11-01 2014-05-08 Alyavdin Dmitry Vyaceslavovich Method of manufacturing of the multilayered intellectual heat expand sleeve from thermoplastic polymer
CN104334950A (en) * 2012-03-14 2015-02-04 皮派克控股有限公司 Multilayer pipeline in a polymer material, device for manufacture of the multilayer pipeline and a method for manufacturing the multilayer pipeline

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1562623A (en) * 2004-03-23 2005-01-12 孙建宁 Flame retardant antistatic high intension and tough composite tube made from polyvinyl chloride and preparation method
CN101992555A (en) * 2010-11-05 2011-03-30 赵树辉 Processing method of net framework enhanced plastic composite pipe and manufactured composite pipe
CN104334950A (en) * 2012-03-14 2015-02-04 皮派克控股有限公司 Multilayer pipeline in a polymer material, device for manufacture of the multilayer pipeline and a method for manufacturing the multilayer pipeline
WO2014070034A1 (en) * 2012-11-01 2014-05-08 Alyavdin Dmitry Vyaceslavovich Method of manufacturing of the multilayered intellectual heat expand sleeve from thermoplastic polymer

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