CN210564385U - Detachable inner heat-insulating oil pipe in oil pipe - Google Patents
Detachable inner heat-insulating oil pipe in oil pipe Download PDFInfo
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- CN210564385U CN210564385U CN201920981262.9U CN201920981262U CN210564385U CN 210564385 U CN210564385 U CN 210564385U CN 201920981262 U CN201920981262 U CN 201920981262U CN 210564385 U CN210564385 U CN 210564385U
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Abstract
The utility model discloses an interior heat preservation oil pipe of detachable in oil pipe, including former steel oil pipe, coupling, pipe end gasket, heat preservation, interior bearing pipe and wear-resisting wax control pipe, former steel oil pipe inner wall has set gradually heat preservation, interior bearing pipe and wear-resisting wax control pipe, and former steel oil pipe's outer wall is equipped with the coupling, and former steel oil pipe's connection port department is provided with the sealing member. The utility model discloses a detachable inner heat-insulating oil pipe in an oil pipe, which can play a role in heat insulation; the heat insulation structure in the original steel oil pipe of the inner heat insulation oil pipe and the lining ultra-high molecular weight polyethylene pipe can be disassembled, so that the pipeline is convenient to maintain after being processed, and the materials are convenient to reuse; the sealing size and tightness of the first sealing assembly and the second sealing assembly are adjustable, and the problem that sealing is easy to leak due to machining deviation of inner diameters of different oil pipes is solved.
Description
Technical Field
The utility model relates to an oil development equipment field especially relates to an interior heat preservation oil pipe of detachable in oil pipe.
Background
The conventional oil extraction method is rod pumping, i.e. steel oil pipe is connected by hoop, and the oil pipe is connected with oil pump at bottom of well by steel sucker rod, the temperature gradient at bottom of well is raised by 3 deg.C every 100m, and the initial liquid temperature of 2000m oil well is 60-80 deg.C.
The underground liquid is lifted to the ground through the up-and-down reciprocating motion of the sucker rod. In the process, due to the heat dissipation effect of the steel pipe, the temperature of the liquid in the pipe is gradually reduced, wax in the liquid is gradually separated out, and the normal liquid outlet of the oil well is influenced to a certain degree. In order to prevent the wax deposition of the oil well, measures such as heating through a sucker rod, hot washing of the oil well, addition of chemical agents and the like are required, and the measures are energy consumption, material consumption, time consumption and manpower consumption.
Meanwhile, the sucker rod is drawn in the oil pipe, and the oil pipe or the sucker rod is easily abraded due to contact friction between the sucker rod and the oil pipe.
Therefore, there is a need to develop a detachable inner thermal insulation pipe in an oil pipe, which has good sealing performance between pipes, and is wear-resistant and detachable while achieving a thermal insulation effect.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the above-mentioned technical problem, a heat preservation oil pipe in detachable is provided in oil pipe.
The utility model adopts the technical proposal that:
an inner heat-insulating oil pipe which can be disassembled in the oil pipe comprises an original steel oil pipe, a coupling, a pipe end gasket, a heat-insulating layer, an inner pressure-bearing pipe and a wear-resistant wax-proof pipe,
the inner wall of the original steel oil pipe is sequentially provided with a heat preservation layer, an inner pressure bearing pipe and a wear-resistant wax-proof pipe, the outer wall of the original steel oil pipe is provided with a coupling, a sealing element is arranged at the connecting port of the original steel oil pipe,
the sealing member includes seal box one, seal assembly one, gland one, seal box two, seal assembly two and gland two, seal box one with gland box two all sets up between former steel oil pipe and interior pressure-bearing pipe, seal box one and interior pressure-bearing pipe welded connection, seal box two and interior pressure-bearing pipe welded connection, be provided with seal assembly one on the seal box one, be provided with seal assembly two on the seal box two, seal assembly compresses tightly gland one on the seal assembly one, seal assembly compresses tightly gland two on the seal assembly two, the ditch inslot of seal gland two is provided with the pipe end gasket.
Further, the wear-resistant wax-proof pipe is an ultra-high molecular weight polyethylene pipe.
Further, the heat-insulating layer is made of aerogel felt or polyurethane foam material.
Further, the thickness of the wear-resistant wax-proof pipe is 2.5mm-5.5 mm.
Furthermore, the thickness of the heat-insulating layer is 3mm-9 mm.
The utility model has the advantages that:
the utility model discloses a detachable inner heat-preservation oil pipe in an oil pipe,
1. the inner heat-insulating oil pipe can play a heat-insulating role, so that underground geothermal heat can be utilized, the temperature of underground liquid is higher than a wax precipitation point when the underground liquid reaches a wellhead under the condition of not using an additional heating means and adding a chemical agent, and the condition that the normal production cannot be normally carried out due to crude oil wax precipitation in a pipe body, which is easy to happen in a common oil production well, is avoided;
2. the heat insulation structure in the original steel oil pipe of the inner heat insulation oil pipe and the lining ultra-high molecular weight polyethylene pipe can be disassembled, so that the pipeline is convenient to maintain after being processed, and the materials are convenient to reuse;
3. the sealing size and tightness of the first sealing assembly and the second sealing assembly are adjustable, and the problem that sealing is easy to leak due to machining deviation of inner diameters of different oil pipes is solved.
The present invention will be described in further detail with reference to the accompanying drawings.
Drawings
Fig. 1 is a sectional view of the detachable internal thermal insulation oil pipe in the oil pipe of the utility model.
In the figure, 1-original steel oil pipe 2-coupling 3-seal box one 4-seal assembly one 5-seal gland one 6-seal gland two 7-pipe end gasket 8-seal assembly two 9-seal box two 10-heat insulation layer 11-inner pressure bearing pipe 12-wear-resistant wax-proof pipe.
Detailed Description
In order to enhance the understanding of the present invention, the following detailed description of the present invention is made with reference to the accompanying drawings and examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in figure 1, the utility model relates to an inner heat-preservation oil pipe which can be disassembled in the oil pipe, which comprises an original steel oil pipe, a coupling, a pipe end gasket, a heat preservation layer, an inner pressure-bearing pipe and a wear-resistant wax-proof pipe,
the inner wall of the original steel oil pipe is sequentially provided with a heat preservation layer, an inner pressure-bearing pipe and a wear-resistant wax-proof pipe, the outer wall of the original steel oil pipe is provided with a coupling, the connecting port of the original steel oil pipe is provided with a sealing element,
the sealing element comprises a first sealing box, a first sealing assembly, a first sealing gland, a second sealing box, a second sealing assembly and a second sealing gland, wherein the first sealing box and the second sealing box are both arranged between an original steel oil pipe and an inner pressure-bearing pipe, the first sealing box is welded with the inner pressure-bearing pipe, the second sealing box is welded with the inner pressure-bearing pipe, the first sealing assembly is arranged on the first sealing box, the second sealing assembly is arranged on the second sealing box, the first sealing gland is compressed on the first sealing assembly, the second sealing gland is compressed on the second sealing assembly, and a pipe end gasket is arranged in a groove of the second sealing gland.
The utility model discloses in, seal assembly one, seal assembly two's sealed size and inseparable degree are the adjustable, have solved different oil pipe internal diameters and have leaded to the sealed condition emergence of easily leaking because of the processing deviation.
The utility model discloses in, wear-resisting wax control pipe is ultra high molecular weight polyethylene pipe. The characteristics of nonpolarity and smooth surface of the ultra-high molecular weight polyethylene pipe are utilized, so that the surface of the wear-resistant wax-proof pipe is not only corrosion-resistant but also is not easy to wax and scale, meanwhile, the wear-resistant wax-proof pipe has a certain heat preservation effect, the temperature of crude oil can be reduced to be lost outwards, and the first heat preservation effect is achieved. In addition, due to the super wear resistance of the ultra-high molecular weight polyethylene material, the wear consumption of the wear-resistant wax-proof pipe in the use process is reduced, the eccentric wear resistance of an oil pipe and an oil rod is improved, the corrosion resistance of the oil pipe is improved, and the service life is prolonged.
In the utility model, the heat-insulating layer is made of aerogel felt or polyurethane foam material. In this embodiment, the insulation layer is made of aerogel felt. The material has good thermal insulation performance, and through tests, the temperature of crude oil is higher than 45 ℃ when the crude oil is lifted to a wellhead and is higher than the temperature at which paraffin is precipitated and crystallized, so that the temperature of underground crude oil is higher than the precipitation temperature of paraffin when the crude oil is lifted to the wellhead, and the inner wall surface of the wear-resistant paraffin-resistant pipe is not easy to be waxed.
In the utility model, the thickness of the wear-resistant wax-proof pipe is 2.5mm-5.5 mm. In this embodiment, the thickness of the wear-resistant wax-proof pipe is 5 mm.
In the utility model, the thickness of the heat preservation layer is 3mm-9 mm. In this embodiment, the thickness of heat preservation is 9 mm.
The utility model discloses in, former steel oil pipe, its internal diameter can be 62mm, also can be 76 mm. Of course, other tube diameters are also suitable.
The utility model discloses in, connect the hoop to be used for connecting former steel oil pipe.
The utility model discloses heat preservation oil pipe's equipment process in detachable in oil pipe:
1. an inner pressure-bearing pipe 11 receives the internal pressure therein. The two ends of the sealing box are respectively welded with a first sealing box 3 and a second sealing box 9, then the wax-proof, corrosion-proof, scale-proof and eccentric wear-proof ultra-high molecular weight polyethylene pipes, namely the wear-resistant wax-proof pipes 12, are lined in the inner pressure-bearing pipes through the diameter reducing technology, and the wear-resistant wax-proof pipes 12 are respectively embedded in cavities formed by the inner pressure-bearing pipes 11 and the first sealing box 3, and the inner pressure-bearing pipes 11 and the second sealing box 9 by adopting the port processing technology to prevent the pipes from being mixed. The outer surface of the inner pressure bearing pipe 11 is coated with an insulating layer 10. The components are combined into a combined inner core of the inner heat-insulating pipe.
2. The combined inner core is placed into the original steel oil pipe 1, the first sealing assembly 4 and the second sealing assembly 8 are placed in due time, then the second sealing gland 6 is firstly pressed and positioned, and then the first sealing gland 5 is pressed.
3. And a pipe end gasket 7 is placed in the groove of the second sealing gland 6.
4. At the factory, the hoop 2 is installed at the second 6 end of the sealing gland and screwed down.
5. When the product leaves the factory, protection measures are needed to be taken at both ends of the pipe.
It should be noted that the above-mentioned embodiments are illustrative and not restrictive of the technical solutions of the present invention, and equivalents of those skilled in the art or other modifications made according to the prior art are intended to be included within the scope of the claims of the present invention as long as they do not exceed the spirit and scope of the technical solutions of the present invention.
Claims (5)
1. The utility model provides an interior heat preservation oil pipe of detachable in oil pipe which characterized in that: comprises an original steel oil pipe, a coupling, a pipe end gasket, a heat-insulating layer, an inner pressure-bearing pipe and a wear-resistant paraffin-proof pipe,
the inner wall of the original steel oil pipe is sequentially provided with a heat preservation layer, an inner pressure bearing pipe and a wear-resistant wax-proof pipe, the outer wall of the original steel oil pipe is provided with a coupling, a sealing element is arranged at the connecting port of the original steel oil pipe,
the sealing member includes seal box one, seal assembly one, gland one, seal box two, seal assembly two and gland two, seal box one with gland box two all sets up between former steel oil pipe and interior pressure-bearing pipe, seal box one and interior pressure-bearing pipe welded connection, seal box two and interior pressure-bearing pipe welded connection, be provided with seal assembly one on the seal box one, be provided with seal assembly two on the seal box two, seal assembly compresses tightly gland one on the seal assembly one, seal assembly compresses tightly gland two on the seal assembly two, the ditch inslot of seal gland two is provided with the pipe end gasket.
2. The inner thermal insulation oil pipe detachable in an oil pipe according to claim 1, wherein: the wear-resistant wax-proof pipe is an ultra-high molecular weight polyethylene pipe.
3. The inner thermal insulation oil pipe detachable in an oil pipe according to claim 1, wherein: the heat-insulating layer is made of aerogel felt or polyurethane foaming material.
4. An inner insulated oil pipe detachable in an oil pipe according to claim 1 or 2, characterized in that: the thickness of the wear-resistant wax-proof pipe is 2.5mm-5.5 mm.
5. An inner insulated oil pipe detachable in an oil pipe according to claim 1 or 3, characterized in that: the thickness of the heat-insulating layer is 3mm-9 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920981262.9U CN210564385U (en) | 2019-06-26 | 2019-06-26 | Detachable inner heat-insulating oil pipe in oil pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920981262.9U CN210564385U (en) | 2019-06-26 | 2019-06-26 | Detachable inner heat-insulating oil pipe in oil pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210564385U true CN210564385U (en) | 2020-05-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920981262.9U Expired - Fee Related CN210564385U (en) | 2019-06-26 | 2019-06-26 | Detachable inner heat-insulating oil pipe in oil pipe |
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| CN (1) | CN210564385U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110331947A (en) * | 2019-06-26 | 2019-10-15 | 江苏联冠兆星石化科技有限公司 | One kind dismountable inside holding oil pipe in oil pipe |
-
2019
- 2019-06-26 CN CN201920981262.9U patent/CN210564385U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110331947A (en) * | 2019-06-26 | 2019-10-15 | 江苏联冠兆星石化科技有限公司 | One kind dismountable inside holding oil pipe in oil pipe |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200519 Termination date: 20210626 |
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| CF01 | Termination of patent right due to non-payment of annual fee |