CN214944052U - Lining oil pipe with ultrahigh molecular weight - Google Patents
Lining oil pipe with ultrahigh molecular weight Download PDFInfo
- Publication number
- CN214944052U CN214944052U CN202120280179.6U CN202120280179U CN214944052U CN 214944052 U CN214944052 U CN 214944052U CN 202120280179 U CN202120280179 U CN 202120280179U CN 214944052 U CN214944052 U CN 214944052U
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- China
- Prior art keywords
- layer
- pipe
- coupling
- molecular weight
- oil pipe
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- 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.)
- Expired - Fee Related
Links
- 230000008878 coupling Effects 0.000 claims abstract description 23
- 238000010168 coupling process Methods 0.000 claims abstract description 23
- 238000005859 coupling reaction Methods 0.000 claims abstract description 23
- 238000004321 preservation Methods 0.000 claims abstract description 16
- 239000011248 coating agent Substances 0.000 claims abstract description 12
- 238000000576 coating method Methods 0.000 claims abstract description 12
- 238000005260 corrosion Methods 0.000 claims abstract description 11
- 230000007797 corrosion Effects 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 10
- 239000003365 glass fiber Substances 0.000 claims description 7
- 239000004744 fabric Substances 0.000 claims description 6
- 239000004677 Nylon Substances 0.000 claims description 3
- 239000004745 nonwoven fabric Substances 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 239000005060 rubber Substances 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 description 1
Images
Landscapes
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
Abstract
The utility model discloses an inside lining oil pipe with ultra-high molecular weight, including two parent tubes and the inside lining pipe of setting in the parent tube, two the surface of parent tube junction is connected with the coupling, the internal surface both ends of coupling are equipped with the internal thread, the surface of parent tube is equipped with the external screw thread that matches with the internal thread, the inside lining pipe includes anticorrosive coating, elastic layer and heat preservation, the heat preservation is connected with the surface of elastic layer, the elastic layer is connected with the surface of anticorrosive coating, the middle part of elastic layer is connected with the enhancement layer, the surface of heat preservation is connected with the wearing layer; the pressure resistance, the stretching resistance and the corrosion resistance of the lining oil pipe are realized.
Description
Technical Field
The utility model relates to a inside lining oil pipe technical field especially relates to an inside lining oil pipe with super high molecular weight.
Background
The oil pipe is used in the exploitation of oil and gas fields and comprises a base pipe and a lining oil pipe, wherein the lining oil pipe is a layer of ultra-high molecular weight polyethylene pipe lined in a common steel oil pipe, and the lining pipe and the steel oil pipe are tightly attached together by adopting a special technology to form a pipe-in-pipe structure. When the base pipe is installed, the base pipe and the lining oil pipe need to be connected through a coupling.
However, with the development of oil and gas fields, the well conditions are more and more complex, the proportion of inclined wells, highly-inclined wells, horizontal wells, small sleeves and sleeve deformation wells is increased, the phenomena of eccentric wear and corrosion of oil pipes or oil rods are more and more serious, and the phenomena of corrosion of H2S, CO2 and other gases are also frequently generated, so that the difficulty of eccentric wear corrosion treatment is increased, and therefore the lining oil pipe with the ultrahigh molecular weight is provided.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides a inside lining oil pipe with ultra-high molecular weight can bring inside lining oil pipe and have stronger resistance to compression, stretch-proofing and corrosion resistance's beneficial effect simultaneously.
In order to solve the technical problem, the utility model provides a following technical scheme: the utility model provides a inside lining oil pipe with ultra high molecular weight, includes two parent tubes and sets up the interior bushing pipe in the parent tube, two the surface of parent tube junction is connected with the coupling, the internal surface both ends of coupling are equipped with the internal thread, the surface of parent tube is equipped with the external screw thread that matches with the internal thread, interior bushing pipe includes anticorrosive coating, elastic layer and heat preservation, the heat preservation is connected with the surface of elastic layer, the elastic layer connect with the surface of anticorrosive coating, the middle part of elastic layer is connected with the enhancement layer, the surface connection of heat preservation has the wearing layer.
As an optimal technical scheme of the utility model, two the one end that the parent tube is close to mutually is equipped with the conical surface, be provided with sealed the pad between conical surface and the coupling, two the arc recess has all been seted up to the one end that interior bushing pipe is close to mutually, the inside of arc recess is equipped with the sealing washer rather than matching.
As an optimal technical scheme of the utility model, the both ends that sealed pad is close to coupling one side all are fixed with snap ring, the snap ring groove that matches with snap ring is seted up to the internal surface of coupling.
As an optimized technical scheme of the utility model, the material of snap ring and sealed pad is the same.
As an optimized technical scheme of the utility model, the material of sealed pad and sealing washer all has stronger anticorrosive performance.
As an optimal technical scheme of the utility model, the anticorrosive coating is the fine cloth layer of glass, and the material on the fine cloth layer of glass is formed by glass fiber, non-woven fabrics, nylon and rubber complex.
Compared with the prior art, the utility model discloses the beneficial effect that can reach is:
1. the lining pipe is composed of an anticorrosive layer, an elastic layer, a reinforcing layer and a heat preservation layer, wherein the anticorrosive layer has anticorrosive performance, when the anticorrosive layer and the heat preservation layer are used in a matched mode, the friction force generated when oil flows in the pipe is reduced, energy conservation and emission reduction are achieved, the loss of the oil pipe in the using process is reduced, the anticorrosive layer can be protected through the elastic effect of the elastic layer, the pressure resistance of the anticorrosive layer is improved, in addition, the tensile strength of the lining pipe can be improved through the matching of the reinforcing layer arranged in the elastic layer, the possibility of deformation of the lining pipe is reduced, and the pressure resistance and the tensile resistance of the oil pipe are improved;
2. adopt sealed pad and sealing washer sealing connection between two parent tubes and interior bushing pipe, improved oil pipe's leakproofness, isolated the steel material contact of well fluid with the parent tube tip, improved oil pipe's anticorrosive ability, increased the frictional force between parent tube and the coupling simultaneously, improve stability, reduced the easy not hard up problem of oil pipe connection.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the structure of the lining pipe of the present invention;
FIG. 3 is an enlarged view of a portion a of FIG. 1;
FIG. 4 is an enlarged view of the structure at b in FIG. 1;
in the figure: 1. a base pipe; 2. a liner tube; 3. a coupling; 4. a gasket; 5. a conical surface; 6. an elastic snap ring; 7. a snap ring groove; 8. an arc-shaped groove; 9. a seal ring; 10. an anticorrosive layer; 11. an elastic layer; 12. a reinforcing layer; 13. and (7) an insulating layer.
Detailed Description
In order to make the technical means, the creation features, the achievement purposes and the functions of the invention easy to understand, the invention is further explained below with reference to the specific embodiments, but the following embodiments are only the preferred embodiments of the invention, not all. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative work belong to the protection scope of the present invention. The experimental methods in the following examples are conventional methods unless otherwise specified, and materials, reagents and the like used in the following examples are commercially available unless otherwise specified.
Example (b):
as shown in fig. 1 and 2, the lining oil pipe with ultrahigh molecular weight comprises two base pipes 1 and a lining pipe 2 arranged in the base pipes 1, wherein the outer surface of the joint of the two base pipes 1 is connected with a coupling 3, two ends of the inner surface of the coupling 3 are provided with internal threads, the outer surface of the base pipe 1 is provided with external threads matched with the internal threads, the lining pipe 2 comprises an anticorrosive layer 10, an elastic layer 11 and a heat preservation layer 13, the heat preservation layer 13 is connected with the outer surface of the elastic layer 11, the elastic layer 11 is connected with the outer surface of the anticorrosive layer 10, the middle part of the elastic layer 11 is connected with a reinforcing layer 12, and the outer surface of the heat preservation layer 13 is connected with a wear-resistant layer;
In another embodiment, as shown in fig. 1, 3 and 4, this embodiment discloses that a conical surface 5 is provided at one end of each of the two base pipes 1, a sealing gasket 4 is provided between the conical surface 5 and the coupling 3, an arc-shaped groove 8 is provided at one end of each of the two lining pipes 2, and a sealing ring 9 matched with the arc-shaped groove 8 is provided inside the arc-shaped groove 8;
adopt sealed 4 and sealing washer 9 sealing connection in two parent tubes 1 and interior bushing pipe 2 between, improved oil pipe's leakproofness, isolated the steel material contact of well fluid with parent tube 1 tip, improved oil pipe's anticorrosive ability, increased the frictional force between parent tube 1 and the coupling 3 simultaneously, improve stability, reduced the easy not hard up problem of oil pipe connection.
In another embodiment, as shown in fig. 3, in the embodiment, elastic snap rings 6 are fixed at both ends of the sealing gasket 4 close to one side of the coupling 3, and a snap ring groove 7 matched with the elastic snap rings 6 is formed on the inner surface of the coupling 3, so that the connection sealing performance and the connection stability between the oil pipe and the coupling 3 are further improved.
In another embodiment, as shown in fig. 3, in this embodiment, the elastic snap ring 6 and the gasket 4 are made of the same material, and the elastic snap ring 6 and the gasket 4 are integrally arranged, so as to further increase the connection sealing performance of the oil pipe.
In another embodiment, as shown in fig. 1 and 4, the embodiment discloses that the materials of the sealing gasket 4 and the sealing ring 9 have strong corrosion resistance, so that the corrosion resistance of the sealing gasket 4 and the sealing ring 9 is improved, the service lives of the sealing gasket 4 and the sealing ring 9 are prolonged, and the service life of the oil pipe is prolonged.
In another embodiment, as shown in fig. 2, the embodiment discloses that the corrosion-resistant layer 10 is a glass fiber cloth layer, and the glass fiber cloth layer is made of glass fiber, non-woven fabric, nylon and rubber, and the wear resistance, moisture resistance and corrosion resistance of the lining pipe 2 are improved.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a inside lining oil pipe with ultra high molecular weight, includes two parent tubes (1) and sets up inside lining pipe (2) in parent tube (1), two the surface of parent tube (1) junction is connected with coupling (3), its characterized in that: the utility model discloses a coupling, including base pipe (1), interior surface both ends of coupling (3) are equipped with the internal thread, the surface of base pipe (1) is equipped with the external screw thread that matches with the internal thread, interior bushing pipe (2) are including anticorrosive coating (10), elastic layer (11) and heat preservation (13), the surface of elastic layer (11) is connected in heat preservation (13), the surface of elastic layer (11) connection with anticorrosive coating (10), the middle part of elastic layer (11) is connected with enhancement layer (12), the surface of heat preservation (13) is connected with the wearing layer.
2. The ultra-high molecular weight, lined tubing of claim 1, wherein: two the one end that base tube (1) is close to mutually is equipped with conical surface (5), be provided with sealed pad (4) between conical surface (5) and coupling (3), two arc recess (8) have all been seted up to the one end that interior bushing pipe (2) are close to mutually, the inside of arc recess (8) is equipped with sealing washer (9) rather than the matching.
3. The ultra-high molecular weight lined oil pipe of claim 2, wherein: the both ends that sealed pad (4) are close to coupling (3) one side all are fixed with snap ring (6), snap ring groove (7) with snap ring (6) matching have been seted up to the internal surface of coupling (3).
4. The ultra-high molecular weight lined oil pipe of claim 3, wherein: the elastic snap ring (6) and the sealing gasket (4) are made of the same material.
5. The ultra-high molecular weight lined oil pipe of claim 4, wherein: the sealing gasket (4) and the sealing ring (9) are made of materials with strong corrosion resistance.
6. The ultra-high molecular weight, lined tubing of claim 1, wherein: the anti-corrosion layer (10) is a glass fiber cloth layer, and the glass fiber cloth layer is made of glass fibers, non-woven fabrics, nylon and rubber in a composite mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120280179.6U CN214944052U (en) | 2021-02-01 | 2021-02-01 | Lining oil pipe with ultrahigh molecular weight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120280179.6U CN214944052U (en) | 2021-02-01 | 2021-02-01 | Lining oil pipe with ultrahigh molecular weight |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214944052U true CN214944052U (en) | 2021-11-30 |
Family
ID=79101277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120280179.6U Expired - Fee Related CN214944052U (en) | 2021-02-01 | 2021-02-01 | Lining oil pipe with ultrahigh molecular weight |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214944052U (en) |
-
2021
- 2021-02-01 CN CN202120280179.6U patent/CN214944052U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211130 |