CN108397617A - A kind of corrosion resistant lining tube Novel joint of oil and gas industry - Google Patents
A kind of corrosion resistant lining tube Novel joint of oil and gas industry Download PDFInfo
- Publication number
- CN108397617A CN108397617A CN201810216181.XA CN201810216181A CN108397617A CN 108397617 A CN108397617 A CN 108397617A CN 201810216181 A CN201810216181 A CN 201810216181A CN 108397617 A CN108397617 A CN 108397617A
- Authority
- CN
- China
- Prior art keywords
- screw thread
- pipe
- crossover sub
- carbon steel
- corrosion resistant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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
- F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
-
- 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
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
- F16L58/04—Coatings characterised by the materials used
- F16L58/08—Coatings characterised by the materials used by metal
-
- 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
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
- F16L58/04—Coatings characterised by the materials used
- F16L58/10—Coatings characterised by the materials used by rubber or plastics
- F16L58/1009—Coatings characterised by the materials used by rubber or plastics the coating being placed inside the pipe
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
A kind of corrosion resistant lining tube Novel joint of oil and gas industry, device include mainly：First screw thread, the second screw thread, left crossover sub, the shoulder that links closely, double female connectors, right crossover sub, third screw thread, the 4th screw thread, safe gap, wherein left crossover sub, double female connectors and right crossover sub material identical and be corrosion resistant alloy；Left crossover sub and left carbon steel pipe are threadedly coupled integrally by first, are then connect with double female connector left ends by the second screw thread；Right crossover sub and right carbon steel pipe are threadedly coupled integrally by the 4th, are then connect with double female connector right ends by third screw thread；First screw thread and the 4th screw thread also only play connection function, and the shoulder that links closely on the second screw thread, third screw thread and double female connectors plays sealing and connection function；The left and right internal lining pipe of protection is played in safe gap, avoids the left and right internal lining pipe of shoulder crush injury that links closely during button.The present invention is suitable for the defeated and long defeated field of engineering technology of petroleum gas collection.
Description
Technical field
This patent is related to that oil and gas collection is defeated, long defeated field of engineering technology, specifically a kind of oil and gas industry it is anti-
Rotten internal lining pipe Novel joint.
Background technology
Oil gas field conveys well liquid（Including oil, gas and water and Korrosionsmedium）The steel pipe of use, generally by about 10m
Long steel pipe is welded, and realizes the defeated purpose of the defeated sum aggregate of length of the Korrosionsmediums such as oil gas water.Due to the well of oil gas field
Often contain a large amount of Korrosionsmedium, such as CO in liquid2、H2S, chlorion, acetic acid cause the corrosion condition of pipeline very serious,
And with the increasingly increase of HTHP peracidity oil gas well exploration and development, corrosive pipeline is also on the rise.To prevent and administering
The corrosion of petroleum pipeline improves the service life of pipeline, and the anti-corrosion measure that each major oil companies use both at home and abroad mainly has following several
Kind：The chemical corrosion inhibiter of addition, plastics inner coating, using corrosion resistant alloy, multiple tube etc., wherein multiple tube include steel-plastics composite pipe and
Composite bimetal pipe and 3PE anti-corrosions.
In terms of corrosion inhibiter, basic principle is made by the physical absorption of polar group on inhibitor molecular or chemisorption
With making corrosion inhibiter be adsorbed on metal surface.Corrosion inhibiter is simple for process, and anti-corrosion effect is preferable, still, in certain offices of petroleum pipeline
Portion, corrosion inhibiter often fill not in place, and serious local flow is easily caused to be corroded, especially oil/gas well is relatively deep, temperature and pressure
In the case of higher high velocity stream, the use of corrosion inhibiter is considerably restricted.In terms of plastics inner coating, domestic and international common petroleum pipeline
Corrosion-inhibiting coating is epoxy novolac type coating, this is a kind of common polymer electrolyte corrosion-inhibiting coating, and high temperature resistant and corrosion resistance have
Limit, and it is not high in the reliability of corrosive environment long-term work.In terms of corrosion resistant alloy, for high temperature, high pressure, high gas rate well using resistance to
Lose alloy reliability highest, it should preferentially use corrosion resistant alloy oil pipe, but corrosion resistant alloy price is prohibitively expensive, use by
The restriction of the economic exploitation.
Common anti-corrosion measure is difficult to balance on reliability, economic index.In order to increase reliability, the drop of anti-corrosion measure
The cost of low corrosion resistant alloy pipeline, bimetallic and steel-plastics composite pipe come into being, and show wide application prospect.Anti-corrosion is used
Bimetallic and steel-plastics composite pipe are in common petroleum pipe liner last layer thin-walled corrosion resistant alloy or plastics（General 2mm）, multiple tube
Both ends be welded to connect using specific process.Corrosion resistant metal or plastics can be selected according to oil field corrosive environment, often be selected
The metals such as Super13Cr, 22Cr, nickel-base alloy often select poly- record ethylene, high density polyethylene (HDPE), polypropylene, polytetrafluoroethylene (PTFE).
Multiple tube is essentially identical with whole anti-corrosion steel pipe in terms of corrosion resisting property, and intensity is no less than ordinary carbon steel pipe, and price is more resistance to than whole
Steel pipe low 50% or more is lost, there is very wide application prospect, it will be in stones such as oil feed pipe, oil pipe, oil water injection pipes
Oily petrochemical field extensive use.
However, due to composite bimetal pipe or the special anticorrosion structure of steel-plastics composite pipe so that it is in corrosion such as oil gas water
Following two problems are susceptible in medium transportational process：First, the internal lining pipe of multiple tube is one layer of very thin corrosion resistant alloy
Or nonmetallic erosion resistant coating, for the multiple tube being welded, the high temperature that when welding generates is easy to burn out nonmetallic erosion resistant coating,
Commissure is easy to happen corrosion and Environmental Stress Cracking, and anti-corrosion reliability is low；Second, end is formed using flanging process
Multiple tube is restricted although the corrosion of joint location can be effectively prevent using the multiple tube tightening torque of flanging process,
Cause it to be susceptible to connector in use to loosen and fluid permeability phenomenon, especially in high temperature and pressure transmission process；The
Three, for not using flange and the multiple tube of welding procedure, it is easy to happen and is corroded through in the gap of internal lining pipe and joint
Hole, to corrode outer layer carbon steel pipe.It follows that up to now, the problem of oil gas pipeline is corroded by well liquid, still has,
The corrosion that multiple tube junction generates in transmission process increases dimension not only without improving the service life of entire pipeline
It repaiies with regard to replacement cost.
For this purpose, the present invention proposes a kind of corrosion resistant lining tube Novel joint of oil and gas industry, can not only efficiently solve
The etching problem of multiple tube junction, and flange processing need not be carried out to corrosion resistant lining tube, enormously simplify multiple tube
Production technology improves the bonding strength between multiple tube, it is therefore prevented that joint loosens and fluid（Such as CO2、CH4、H2S etc.）It oozes
Thoroughly, to ensure the safe operation under harsh Service Environment of composite bimetal pipe or steel-plastics composite pipe.
Invention content
The object of the present invention is to provide a kind of corrosion resistant lining tube Novel joints of oil and gas industry, to solve bimetallic or steel
Plastic composite junction is easy to happen burn into transmission process and loosens and the problem of fluid permeability, the device not only structure letter
It is single, easy to operate, and fully meet military service operating mode of the multiple tube in the corrosive mediums transmission process such as oil gas water.
To achieve the above object, the present invention takes following technical scheme：
The present invention proposes a kind of corrosion resistant lining tube Novel joint of oil and gas industry, includes mainly：Left carbon steel pipe, the first spiral shell
Line, the second screw thread, left crossover sub, the shoulder that links closely, double female connectors, right crossover sub, third screw thread, the 4th screw thread, right carbon steel
Pipe, right internal lining pipe, safe gap, left inside bushing pipe, wherein left crossover sub, double female connectors and right crossover sub material identical
And it is corrosion resistant alloy；Left crossover sub and left carbon steel pipe are threadedly coupled integral, the left crossover sub connected by first
It is connect with double female connector left ends by the second screw thread with left carbon steel pipe with the multiple tube that left inside bushing pipe forms；Right crossover sub and the right side
Carbon steel pipe is threadedly coupled integrally by the 4th, and right crossover sub and right carbon steel pipe and the right internal lining pipe connected forms compound
Pipe is connect by third screw thread with double female connector right ends；The first screw thread between left crossover sub and left carbon steel pipe only plays connection and makees
Also only play connection function with, the 4th screw thread between right crossover sub and right carbon steel pipe, and left crossover sub and double female connectors it
Between the second screw thread and double female connectors on link closely shoulder rise sealing and connection function, between right crossover sub and double female connectors
The shoulder that links closely on third screw thread and double female connectors plays sealing and connection function；Double female connectors and left inside bushing pipe and right internal lining pipe it
Between safe gap play a part of to protect left inside bushing pipe and right internal lining pipe, the shoulder crush injury that avoids linking closely during button is left,
Right internal lining pipe；Left inside bushing pipe and right internal lining pipe can be corrosion resistant alloys, can also be corrosion resistant non-metallic plastic, corrosion resistant alloy
Internal lining pipe and carbon steel pipe constitute composite bimetal pipe, and corrosion resistant non-metallic plastic and carbon steel pipe constitute steel-plastics composite pipe.
The present invention has the following advantages that：
Using the connection of the achievable bimetallic/steel-plastics composite pipe of the present invention, multiple tube junction appearance can be not only efficiently solved
Perishable problem, and flange processing need not be carried out to corrosion resistant lining tube, the production technology of multiple tube is enormously simplified, together
When improve bonding strength and sealing performance between multiple tube.
Description of the drawings
Fig. 1 is the schematic diagram of apparatus of the present invention structure.
Specific implementation mode
With reference to the accompanying drawings and embodiments, the present invention is described in detail.
Referring to attached drawing, the present invention proposes a kind of corrosion resistant lining tube Novel joint of oil and gas industry, includes mainly：Left carbon
Steel pipe 1, the first screw thread 2, the second screw thread 3, left crossover sub 4, the shoulder 5 that links closely, double female connectors 6, right crossover sub 7, third spiral shell
Line 8, the 4th screw thread 9, right carbon steel pipe 10, right internal lining pipe 11, safe gap 12, left inside bushing pipe 13, wherein left crossover sub 4, double
The material identical of female connector 6 and right crossover sub 7 and be corrosion resistant alloy；Left crossover sub 4 and left carbon steel pipe 1 pass through the first spiral shell
Line 2 links into an integrated entity, and the multiple tube that the left crossover sub 4 and left carbon steel pipe 1 connected is formed with left inside bushing pipe 13 is by second
Screw thread 3 is connect with double 6 left ends of female connector；Right crossover sub 7 and right carbon steel pipe 10 are linked into an integrated entity by the 4th screw thread 9, connection
The multiple tube that good right crossover sub 7 and right carbon steel pipe 10 is formed with right internal lining pipe 11 is right by third screw thread 8 and double female connectors 6
End connection；2, the first screw thread between left crossover sub 4 and left carbon steel pipe 1 plays connection function, right crossover sub 7 and right carbon steel
The 4th screw thread 9 between pipe 10 also only plays connection function, and the second screw thread 3 between left crossover sub 4 and double female connectors 6 and double
The shoulder 5 that links closely on female connector 6 plays sealing and connection function, third screw thread 8 between right crossover sub 7 and double female connectors 6 and
The shoulder 5 that links closely on double female connectors 6 also plays sealing and connection function；Double female connectors 6 and left inside bushing pipe 13 and right internal lining pipe 11 it
Between safe gap 12 play the left inside bushing pipe 13 of protection and right internal lining pipe 11, avoid the extruding of shoulder 5 of linking closely during button
Damage left inside bushing pipe 13 and right internal lining pipe 11；Left inside bushing pipe 13 and right internal lining pipe 11 can be corrosion resistant alloys, can also be corrosion resistant
The non-metallic plastic of erosion, corrosion resistant alloy internal lining pipe and carbon steel pipe constitute composite bimetal pipe, corrosion resistant non-metallic plastic and
Carbon steel pipe constitutes steel-plastics composite pipe.
Claims (1)
1. a kind of corrosion resistant lining tube Novel joint of oil and gas industry, which is characterized in that device includes mainly：Left carbon steel pipe (1),
First screw thread (2), the second screw thread (3), left crossover sub (4), the shoulder that links closely (5), double female connectors (6), right crossover sub (7),
Third screw thread (8), the 4th screw thread (9), right carbon steel pipe (10), right internal lining pipe (11), safe gap (12), left inside bushing pipe (13),
Wherein, the material identical of left crossover sub (4), double female connectors (6) and right crossover sub (7) and be corrosion resistant alloy；Left-hand rotation is changed
Connector (4) and left carbon steel pipe (1) are linked into an integrated entity by the first screw thread (2), the left crossover sub (4) connected and left carbon steel pipe
(1) it is connect with double female connector (6) left ends by the second screw thread (3) with the multiple tube of left inside bushing pipe (13) composition；Right crossover sub
(7) it is linked into an integrated entity by the 4th screw thread (9) with right carbon steel pipe (10), the right crossover sub (7) connected and right carbon steel pipe
(10) it is connect with double female connector (6) right ends by third screw thread (8) with the multiple tube of right internal lining pipe (11) composition；Left crossover sub
(4) the first screw thread (2) between left carbon steel pipe (1) only plays connection function, between right crossover sub (7) and right carbon steel pipe (10)
The 4th screw thread (9) also only play connection function, and the second screw thread (3) between left crossover sub (4) and double female connectors (6) and double
The shoulder that links closely (5) on female connector (6) plays sealing and connection function, the third between right crossover sub (7) and double female connectors (6)
The shoulder that links closely (5) on screw thread (8) and double female connectors (6) also plays sealing and connection function；Double female connectors (6) and left inside bushing pipe
(13) the safe gap (12) between right internal lining pipe (11) plays a part of to protect left inside bushing pipe (13) and right internal lining pipe (11), keeps away
Exempt from link closely during upper the button left inside bushing pipe of shoulder (5) crush injury (13) and right internal lining pipe (11)；In left inside bushing pipe (13) and the right side
Bushing pipe (11) can be corrosion resistant alloy, can also be corrosion resistant non-metallic plastic, corrosion resistant alloy liner and corrosion resistant non-gold
Composite bimetal pipe and steel-plastics composite pipe can be separately constituted by belonging to liner and carbon steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810216181.XA CN108397617A (en) | 2018-03-16 | 2018-03-16 | A kind of corrosion resistant lining tube Novel joint of oil and gas industry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810216181.XA CN108397617A (en) | 2018-03-16 | 2018-03-16 | A kind of corrosion resistant lining tube Novel joint of oil and gas industry |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108397617A true CN108397617A (en) | 2018-08-14 |
Family
ID=63092577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810216181.XA Pending CN108397617A (en) | 2018-03-16 | 2018-03-16 | A kind of corrosion resistant lining tube Novel joint of oil and gas industry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108397617A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109173041A (en) * | 2018-10-25 | 2019-01-11 | 天津市塑料研究所有限公司 | Rule male and female connector conversion connector |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201071686Y (en) * | 2007-08-22 | 2008-06-11 | 上海海隆石油管材研究所 | Anti-corrosion oil pipe and connecting mechanism |
| CN201284624Y (en) * | 2008-09-01 | 2009-08-05 | 赵建军 | Stainless steel inner lining pipe and coupling assembly |
| CN201496004U (en) * | 2009-08-20 | 2010-06-02 | 四川华工石油钢管有限责任公司 | Joint for composite oil pipes or casings |
| CN105276336A (en) * | 2014-12-08 | 2016-01-27 | 中国石油天然气股份有限公司 | Welding pipeline internal corrosion prevention method and pipeline used for method |
| CN105350925A (en) * | 2015-12-02 | 2016-02-24 | 天津钢管集团股份有限公司 | Anti-corrosion high-temperature-resistant lining structure for TP-JC oil well pipe with special thread |
| CN206072588U (en) * | 2016-07-15 | 2017-04-05 | 中石油煤层气有限责任公司陕西技术服务分公司 | The pipe box cupling that a kind of oil liner oil pipe is used |
-
2018
- 2018-03-16 CN CN201810216181.XA patent/CN108397617A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201071686Y (en) * | 2007-08-22 | 2008-06-11 | 上海海隆石油管材研究所 | Anti-corrosion oil pipe and connecting mechanism |
| CN201284624Y (en) * | 2008-09-01 | 2009-08-05 | 赵建军 | Stainless steel inner lining pipe and coupling assembly |
| CN201496004U (en) * | 2009-08-20 | 2010-06-02 | 四川华工石油钢管有限责任公司 | Joint for composite oil pipes or casings |
| CN105276336A (en) * | 2014-12-08 | 2016-01-27 | 中国石油天然气股份有限公司 | Welding pipeline internal corrosion prevention method and pipeline used for method |
| CN105350925A (en) * | 2015-12-02 | 2016-02-24 | 天津钢管集团股份有限公司 | Anti-corrosion high-temperature-resistant lining structure for TP-JC oil well pipe with special thread |
| CN206072588U (en) * | 2016-07-15 | 2017-04-05 | 中石油煤层气有限责任公司陕西技术服务分公司 | The pipe box cupling that a kind of oil liner oil pipe is used |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109173041A (en) * | 2018-10-25 | 2019-01-11 | 天津市塑料研究所有限公司 | Rule male and female connector conversion connector |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7819439B2 (en) | Fishtail bore seal | |
| CN201218372Y (en) | Screw connector of bi-metal composite pipe | |
| CN100458259C (en) | Polymer composite corrugated expansion joint | |
| CN101915064B (en) | Bimetal compound pipe | |
| CN108397617A (en) | A kind of corrosion resistant lining tube Novel joint of oil and gas industry | |
| CN101749505A (en) | Self-compensating direct quick-connection pipeline | |
| CN104214439B (en) | Different metal submarine pipeline seal | |
| CN201779363U (en) | Bi-metal composite delivery pipe | |
| CN204922390U (en) | Compound oil pipe or compound oil sleeve pipe | |
| CN202580332U (en) | Bimetal composite pipe fitting with instrument joint | |
| CN206617670U (en) | A kind of UHMWPE steel skeletons composite oil pipeline | |
| CN201835756U (en) | Bimetal composited tube | |
| CN212317880U (en) | Double-metal coupling | |
| CN2354005Y (en) | Safety directly-buried type expansion section of metal corrugated pipe | |
| CN201137793Y (en) | Steel pipe welding interface anti-corrosive protection joint | |
| CN210564386U (en) | Take anticorrosive sucker rod of full cladding of stainless steel joint | |
| CN115111444A (en) | Plastic-lined pipeline branch pipe connecting structure | |
| CN211550924U (en) | Corrosion-resistant petroleum pipeline | |
| CN206816972U (en) | A kind of low-pressure fluid conveyance conduit steel pipe | |
| CN204153389U (en) | A kind of no-welding-seam composite anti-corrosive pipeline repaired mouth | |
| CN212564773U (en) | Stainless steel pipeline | |
| CN216110579U (en) | Composite oil pipe or casing pipe and coupling connecting structure | |
| CN217502859U (en) | Fluid pipe for oil development | |
| CN107842668A (en) | Joint uses internal lining pipe preserving method during a kind of oil field pipe welding | |
| CN220566754U (en) | Spiral bimetal welded pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180814 |