CN213574015U - Heat-insulating sealing compensation device for oil field steam injection well - Google Patents
Heat-insulating sealing compensation device for oil field steam injection well Download PDFInfo
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- CN213574015U CN213574015U CN202022333659.2U CN202022333659U CN213574015U CN 213574015 U CN213574015 U CN 213574015U CN 202022333659 U CN202022333659 U CN 202022333659U CN 213574015 U CN213574015 U CN 213574015U
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- 238000010793 Steam injection (oil industry) Methods 0.000 title claims abstract description 13
- 238000007789 sealing Methods 0.000 title claims abstract description 11
- 239000004065 semiconductor Substances 0.000 claims abstract description 68
- 239000004020 conductor Substances 0.000 claims abstract description 32
- 238000004321 preservation Methods 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 16
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 229910010293 ceramic material Inorganic materials 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 230000005679 Peltier effect Effects 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000005678 Seebeck effect Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000005619 thermoelectricity Effects 0.000 description 1
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Abstract
The utility model discloses a heat preservation sealing compensation device for an oil field steam injection well, which relates to the field of oil exploitation and comprises an oil delivery pipe, a positioning ring, a fixing device and a compensation device; the outer surface of the connecting position of two adjacent single-section oil pipe columns is provided with a fixing device, the fixing device comprises a first heat conduction layer and a second heat conduction layer, and the compensation device is positioned in the fixing device and fixedly installed; the compensation device comprises a first semiconductor, a second semiconductor, a third heat conduction layer, a first conductor and a second conductor; the first semiconductor, the second semiconductor and the third semiconductor are all columnar and are sequentially arranged in a shape like a Chinese character 'three'. The compensation device can accelerate the heat in the second heat conduction layer to be transferred to the first heat conduction layer, so that the second heat conduction layer can be guaranteed to be shrunk in preference to the single-section oil pipe column, the inner surface of the second heat conduction layer can be further guaranteed to be capable of pressing the outer surface of the single-section oil pipe column, the generation of gaps is avoided, and the sealing performance is improved.
Description
Technical Field
The utility model relates to an oil development field specifically is a steam injection well heat preservation sealing compensation arrangement in oil field.
Background
High-temperature steam is conveyed into the well through the thermal recovery underground pipe column to recover oil in the process of thick oil field exploitation, and the pipe column in the well is extended due to expansion caused by heat and contraction caused by high temperature of the steam. Because the whole oil pipe adopts single-section tubular column to establish ties and forms, consequently for extrusion fracture when avoiding the tubular column thermal expansion, set up the length of surplus clearance to thermal expansion between adjacent single-section tubular column usually and compensate. After steam injection is finished, the temperature is reduced, the oil pipe is shrunk, and the allowance clearance is increased, so that the sealing performance of the oil pipe is reduced, and the risk of oil gas residue leakage loss is increased.
SUMMERY OF THE UTILITY MODEL
In order to overcome the shortcoming that the expend with heat and contract with cold of defeated oil pipe of traditional oil field steam injection well has increased the risk of oil gas residue leakage loss among the above-mentioned background art, the utility model provides an oil field steam injection well keeps warm and seals compensation arrangement.
The technical scheme that the above-mentioned weak point of the utility model was adopted is: the heat-insulating sealing compensation device for the oil field steam injection well comprises an oil conveying pipe, wherein the oil conveying pipe comprises a plurality of single-section oil pipe columns which are sequentially communicated in series; and a margin gap is arranged between two adjacent single-section oil pipe columns.
The device also comprises a positioning ring, a fixing device and a compensating device; the outer surface of the connecting position of two adjacent single-section oil pipe columns is provided with a fixing device, and the fixing device is in compression joint with the outer surface of the single-section oil pipe column; the upper end and the lower end of the fixing device are respectively provided with a positioning ring which is in non-pressure contact with the fixing device; the positioning ring is in a hoop shape and is fixedly connected with the outer surface of the single-section oil pipe column; the fixing device comprises a first heat conduction layer and a second heat conduction layer, the first heat conduction layer and the second heat conduction layer are both in an annular column shape, and the outer surface of the second heat conduction layer is connected with the inner surface of the first heat conduction layer; the compensation device is positioned in the fixing device and fixedly installed; the compensation device comprises a first semiconductor, a second semiconductor, a third heat conduction layer, a first conductor and a second conductor; the first semiconductor, the second semiconductor and the third semiconductor are all columnar and are sequentially arranged in a shape like a Chinese character 'three'; the first semiconductor is connected with the second semiconductor through the first conductor, and the second semiconductor is connected with the third semiconductor through the second conductor; the third heat conduction layer is strip-shaped, and the first semiconductor, the second semiconductor, the third semiconductor, the first conductor and the second conductor are all positioned in the third heat conduction layer and fixedly installed; the first semiconductor and the third semiconductor are connected with an oilfield power system through wires.
As a further optimization scheme of the present invention, the first semiconductor and the third semiconductor are both P-type semiconductor materials, preferably Bi2Te 3-Sb 2Te3 materials; the second semiconductor is an N-type semiconductor material, preferably Bi2Te 3-Bi 2Se3 material; the first conductor and the second conductor are both made of conductive materials, and preferably made of copper or copper alloy materials.
As a further optimization scheme of the utility model, the first heat conduction layer is made of steel material, and the second heat conduction layer is made of steel material, so as to ensure good wear resistance; the third heat conduction layer is made of ceramic materials so as to ensure the insulativity and the heat conductivity at the same time.
The utility model discloses an useful part lies in: after oil and steam stop being introduced, the single-section oil pipe column and the first heat conduction layer are in direct contact with air and are shrunk at first, the second heat conduction layer is not in contact with the air and is shrunk at last, and the time difference of shrinking causes the gap between the single-section oil pipe column and the second heat conduction layer to be enlarged, so that the risk of leakage exists. Therefore, the utility model discloses introduced compensation arrangement, based on the Peltier effect, the heat flows to the right end from the compensation arrangement left end, consequently compensation arrangement can transmit the intraformational heat of second heat conduction to first heat-conducting layer with higher speed, in order to guarantee that the second heat-conducting layer can be prior to single section oil pipe post and carry out shrinkage, further guarantee that second heat-conducting layer internal surface can compress tightly single section oil pipe post surface, avoid the production in clearance, increase the leakproofness, the shortcoming of the expend with heat and contract with cold that traditional oil field steam injection well oil pipeline has been solved and the risk of oil gas residue leakage loss has been increased.
Drawings
The present application is further described below with reference to the accompanying drawings:
fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the fixing device;
FIG. 3 is a schematic view of a compensation device;
FIG. 4 is a schematic view of the vertical cut structure of the present invention;
in the figure: 1-single section tubing string, 11-margin clearance, 2-positioning ring, 3-fixing device, 31-first heat conduction layer, 32-second heat conduction layer, 4-compensating device, 41-first semiconductor, 42-second semiconductor, 43-third semiconductor, 44-third heat conduction layer, 45-first conductor and 46-second conductor.
Detailed Description
According to the above structural features of the present application, the embodiments of the present application will be further explained:
referring to fig. 1-4, the embodiment provides a heat-insulating sealing compensation device for an oil field steam injection well, which comprises an oil delivery pipe, wherein the oil delivery pipe comprises a plurality of single-section oil pipe columns 1, and the single-section oil pipe columns 1 are sequentially communicated in series; a margin gap 11 is arranged between every two adjacent single-section oil pipe columns 1; the device also comprises a positioning ring 2, a fixing device 3 and a compensating device 4; the outer surface of the connecting position of two adjacent single-section oil pipe columns 1 is provided with a fixing device 3, and the fixing device 3 is in compression joint with the outer surface of the single-section oil pipe column 1; the upper end and the lower end of the fixing device 3 are respectively provided with a positioning ring 2, and the positioning rings 2 are in no-pressure touch connection with the fixing device 3; the positioning ring 2 is in a hoop shape, and the positioning ring 2 is fixedly connected with the outer surface of the single-section oil pipe column 1; the fixing device 3 comprises a first heat conduction layer 31 and a second heat conduction layer 32, the first heat conduction layer 31 and the second heat conduction layer 32 are both in an annular column shape, and the outer surface of the second heat conduction layer 32 is connected with the inner surface of the first heat conduction layer 31; the compensation device 4 is positioned inside the fixing device 3 and is fixedly installed; the compensation device 4 comprises a first semiconductor 41, a second semiconductor 42, a third semiconductor 43, a third heat conduction layer 44, a first conductor 45 and a second conductor 46; the first semiconductor 41, the second semiconductor 42, and the third semiconductor 43 are all columnar and sequentially arranged in a shape of a "three"; the first semiconductor 41 and the second semiconductor 42 are connected by a first conductor 45, and the second semiconductor 42 and the third semiconductor 43 are connected by a second conductor 46; the third heat conduction layer 44 is strip-shaped, and the first semiconductor 41, the second semiconductor 42, the third semiconductor 43, the first conductor 45 and the second conductor 46 are all positioned inside the third heat conduction layer 44 and fixedly mounted; the first semiconductor 41 and the third semiconductor 43 are connected with the oilfield power system through wires.
The first semiconductor 41 and the third semiconductor 43 are both P-type semiconductor materials, preferably Bi2Te 3-Sb 2Te3 materials; the second semiconductor 42 is an N-type semiconductor material, preferably a Bi2Te 3-Sb 2Te3 material; the first conductor 45 and the second conductor 46 are both conductive materials, preferably copper or copper alloy materials.
The first heat conduction layer 31 is made of steel materials, and the second heat conduction layer 32 is made of steel materials so as to ensure good wear resistance; the third conductive layer 44 is made of a ceramic material to ensure both insulation and thermal conductivity.
The working principle is as follows: peltier Effect (Peltier Effect): also known as the second effect of thermoelectricity, is the effect of heat absorption and heat release at a contact point when current passes through the contact point composed of two conductors/semiconductors, in addition to joule heat generated by the current flowing through the circuit, which is the reverse reaction of the seebeck effect. I.e. two different metals forming a closed loop, a directed flow of heat will occur between the two joints when a direct current is present in the loop. The utility model discloses in, let in oil gas in the oil pipe, single-section oil pipe column 1 thermal expansion: for the axial direction, the allowance gap 11 is reduced, so that the single-section oil pipe column 1 is prevented from being mutually extruded and damaged; for the radial direction, heat is sequentially transferred from the oil gas, the single-section oil pipe column 1, the second heat conduction layer 32, the compensation device 4 and the first heat conduction layer 31 to the outside air, so that the expansion sequence is the single-section oil pipe column 1, the second heat conduction layer 32 and the first heat conduction layer 31, and the problem that the gap between the single-section oil pipe column 1 and the second heat conduction layer 32 is enlarged is solved; after the oil and the steam stop being introduced, the single-section oil pipe column 1 and the first heat conduction layer 31 are in direct contact with the air and are shrunk at first, the second heat conduction layer 32 is not in contact with the air and is shrunk at last, and the time difference of shrinking causes the gap between the single-section oil pipe column 1 and the second heat conduction layer 32 to be enlarged, so that the risk of leakage exists. Therefore, for solving this problem, the utility model discloses compensation arrangement 4 has been introduced, based on the Peltier effect, the heat is from 4 left ends flow direction right-hand members of compensation arrangement, consequently compensation arrangement 4 can be with the heat in the second heat-conducting layer 32 with higher speed transmit to first heat-conducting layer 31, can carry out the shrinkage in priority to single section oil pipe post 1 in order to guarantee that second heat-conducting layer 32, further guarantee that second heat-conducting layer 32 internal surface can compress tightly 1 surface of single section oil pipe post, avoid the production in clearance, increase the leakproofness, the risk of oil gas leakage has been avoided.
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element indicated must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be further noted that, unless explicitly stated or limited otherwise, the terms "disposed," "mounted" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, connected through an intermediate medium, or connected to each other inside two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
To sum up, to the technical personnel in the field, according to the guidance of the utility model, under the prerequisite that does not deviate from the principle and spirit of the utility model, to the change, modification, replacement, deformation that the utility model was done still fall into the protection scope of the utility model.
Claims (3)
1. The heat-insulating sealing compensation device for the oil field steam injection well comprises an oil conveying pipe, wherein the oil conveying pipe comprises a plurality of single-section oil pipe columns (1), and the single-section oil pipe columns (1) are sequentially communicated in series; the method is characterized in that: a margin gap (11) is arranged between two adjacent single-section oil pipe columns (1);
the device also comprises a positioning ring (2), a fixing device (3) and a compensating device (4); the outer surface of the connecting position of two adjacent single-section oil pipe columns (1) is provided with a fixing device (3), and the fixing device (3) is in compression joint with the outer surface of the single-section oil pipe column (1); the upper end and the lower end of the fixing device (3) are respectively provided with a positioning ring (2), and the positioning ring (2) is in no-pressure touch connection with the fixing device (3); the positioning ring (2) is in a hoop shape, and the positioning ring (2) is fixedly connected with the outer surface of the single-section oil pipe column (1);
the fixing device (3) comprises a first heat conduction layer (31) and a second heat conduction layer (32), the first heat conduction layer (31) and the second heat conduction layer (32) are both in an annular column shape, and the outer surface of the second heat conduction layer (32) is connected with the inner surface of the first heat conduction layer (31);
the compensation device (4) is positioned in the fixing device (3) and is fixedly installed; the compensation device (4) comprises a first semiconductor (41), a second semiconductor (42), a third semiconductor (43), a third heat conduction layer (44), a first conductor (45) and a second conductor (46); the first semiconductor (41), the second semiconductor (42) and the third semiconductor (43) are all columnar and are sequentially arranged in a three-character shape; the first semiconductor (41) and the second semiconductor (42) are connected by a first conductor (45), and the second semiconductor (42) and the third semiconductor (43) are connected by a second conductor (46); the third heat conduction layer (44) is strip-shaped, and the first semiconductor (41), the second semiconductor (42), the third semiconductor (43), the first conductor (45) and the second conductor (46) are all positioned in the third heat conduction layer (44) and fixedly installed; the first semiconductor (41) and the third semiconductor (43) are connected with an oilfield power system through wires.
2. The oil field steam injection well heat preservation sealing compensation device of claim 1, characterized in that: the first semiconductor (41) and the third semiconductor (43) are both made of P-type semiconductor materials, the second semiconductor (42) is made of N-type semiconductor materials, and the first conductor (45) and the second conductor (46) are both made of conductive materials.
3. The oil field steam injection well heat preservation sealing compensation device of claim 1, characterized in that: the first heat conduction layer (31) is made of steel materials, the second heat conduction layer (32) is made of steel materials, and the third heat conduction layer (44) is made of ceramic materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022333659.2U CN213574015U (en) | 2020-10-20 | 2020-10-20 | Heat-insulating sealing compensation device for oil field steam injection well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022333659.2U CN213574015U (en) | 2020-10-20 | 2020-10-20 | Heat-insulating sealing compensation device for oil field steam injection well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213574015U true CN213574015U (en) | 2021-06-29 |
Family
ID=76525840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022333659.2U Expired - Fee Related CN213574015U (en) | 2020-10-20 | 2020-10-20 | Heat-insulating sealing compensation device for oil field steam injection well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213574015U (en) |
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2020
- 2020-10-20 CN CN202022333659.2U patent/CN213574015U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210629 |