CN211144394U - Hot-melting type sleeve heat stress compensation device - Google Patents
Hot-melting type sleeve heat stress compensation device Download PDFInfo
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- CN211144394U CN211144394U CN201921888501.2U CN201921888501U CN211144394U CN 211144394 U CN211144394 U CN 211144394U CN 201921888501 U CN201921888501 U CN 201921888501U CN 211144394 U CN211144394 U CN 211144394U
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Abstract
The utility model discloses a hot melt formula sleeve pipe thermal stress compensation arrangement, include: the hot melting device comprises a first connecting pipe, a second connecting pipe, a hot melting piece and a locking block, wherein one end of the first connecting pipe is sleeved at one end of the second connecting pipe in a sliding manner; the inner circumferential surface of the first connecting pipe is provided with a first limiting groove; a second limiting groove is formed in the outer peripheral surface of the second connecting pipe, and one end of the liquid receiving cavity is communicated with the second limiting groove; the hot melting piece is arranged on one side, far away from the first limiting groove, of the second limiting groove; place in the one end of locking piece in first spacing groove, the hot melt spare is heated and melts, works as the locking piece is whole to slide in during the second spacing groove, first connecting pipe with the second connecting pipe loses the joint of locking piece, at this moment first connecting pipe can be relative second connecting pipe axial slip to realize the axial deformation that the compensating sleeve pipe produced after being heated.
Description
Technical Field
The utility model relates to a petroleum engineering technical field, concretely relates to hot melt formula sleeve pipe thermal stress compensation arrangement.
Background
The world thick oil resources are rich, but the thick oil has high density, high viscosity and large flow resistance and is difficult to extract. There are currently only two ways to recover heavy oil: one is to inject high-temperature steam into the well directly through a casing; one is to burn the reservoir area to generate heat. Either of these methods can lead to a harsh working environment for the casing string during operation, resulting in damage to the completion string. The casing pipe damages and damages very generally at the viscous crude thermal recovery in-process, and the well cementation back casing pipe is heated because the inside thermal stress that can produce of expend with heat and contract with cold sleeve pipe makes the casing pipe extension, and the casing pipe serious extension can be directly the wellhead assembly lifting several meters, and the temperature reduction can contract again, and this operation in the later stage of serious influence restricts economic development.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned technique not enough, provide a hot melt formula sleeve pipe thermal stress compensation arrangement, aim at the axial deformation that the compensation sleeve pipe produced after being heated to reach protective case's purpose.
In order to achieve the above technical purpose, the technical solution of the utility model provides a hot melt formula sleeve pipe thermal stress compensation arrangement, include: the hot melting device comprises a first connecting pipe, a second connecting pipe, a hot melting piece and a locking block, wherein one end of the first connecting pipe is sleeved at one end of the second connecting pipe in a sliding manner; the inner circumferential surface of the first connecting pipe is provided with a first limiting groove; a second limiting groove is formed in the outer peripheral surface of the second connecting pipe, and the first limiting groove is arranged opposite to the second limiting groove; a liquid receiving cavity is formed in the second connecting pipe, and one end of the liquid receiving cavity is communicated with the second limiting groove; the hot melting piece is arranged on one side, far away from the first limiting groove, of the second limiting groove; one end of the locking block is arranged in the first limiting groove, the other end of the locking block is arranged in one side, close to the first limiting groove, of the second limiting groove, the thickness of the locking block is larger than that of the first limiting groove, and the thickness of the locking block is smaller than that of the second limiting groove;
when the hot melting piece is heated and melted, the locking block can completely slide into the second limiting groove.
Compared with the prior art, the beneficial effects of the utility model include: this hot melt formula sleeve pipe thermal stress compensation arrangement is directly established ties on the sleeve pipe in the in-service use process, when the sleeve pipe is heated, hot melt formula sleeve pipe thermal stress compensation arrangement also can be heated, thereby lead to the hot melt piece is heated and is melted, and the hot melt piece after melting flows in receive the sap cavity, thereby avoid right the locking piece slides in the second spacing groove causes to block, works as the locking piece is whole to slide in during the second spacing groove, first connecting pipe with the second connecting pipe loses the joint of locking piece, this moment first connecting pipe can be relative second connecting pipe axial slip to realize the axial deformation that the compensating sleeve pipe produced after being heated, in order to reach protective case's purpose.
Drawings
Fig. 1 is a schematic half-sectional structure view of an embodiment of a thermal stress compensation device for a hot-melt bushing according to the present invention;
fig. 2 is an enlarged schematic view of a middle section of fig. 1.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 and fig. 2, the present embodiment provides a thermal stress compensation device for a thermal melting bushing, including: the connecting device comprises a first connecting pipe 1, a second connecting pipe 2, a hot melting piece 3 and a locking block 4.
One end of the first connecting pipe 1 is slidably sleeved at one end of the second connecting pipe 2, a first limiting groove 1a is formed in the inner circumferential surface of the first connecting pipe 1, a second limiting groove 2a is formed in the outer circumferential surface of the second connecting pipe 2, the first limiting groove 1a is arranged opposite to the second limiting groove 2a, a liquid receiving cavity 2b is formed in the second connecting pipe 2, one end of the liquid receiving cavity 2b is communicated with the second limiting groove 2a, and in the embodiment, a communicating gap 2c is formed between one end of the liquid receiving cavity 2b and the second limiting groove 2 a.
This hot melt formula sleeve pipe thermal stress compensation arrangement is directly established ties on the sleeve pipe in the in-service use process, when the sleeve pipe is heated, hot melt formula sleeve pipe thermal stress compensation arrangement also can be heated, works as hot melt 3 is heated and melts, and hot melt 3 after melting flows in receive sap cavity 2b, thereby avoid right locking piece 4 slides in second spacing groove 2a causes to block, works as locking piece 4 is whole to slide in during second spacing groove 2a, first connecting pipe 1 with second connecting pipe 2 loses the joint of locking piece 4, at this moment first connecting pipe 1 can be relative 2 axial slip of second connecting pipe, thereby realize the axial deformation that the compensating sleeve pipe produced after being heated.
In practical use, a plurality of the thermal stress compensation devices of the thermal melting type sleeves can be connected in series on one sleeve, for example, one thermal stress compensation device of the thermal melting type sleeve is connected in series on each sleeve at intervals of 50 m.
This embodiment provides a preferred embodiment, second spacing groove 2a does the sunken annular groove that forms of outer peripheral face of second connecting pipe 2, just second spacing groove 2a with second connecting pipe 2 is coaxial, this moment hot melt piece 3, receive liquid chamber 2b, intercommunication gap 2c are the annular, and annular second spacing groove 2a can avoid first connecting pipe 1 is relative when second connecting pipe 2 rotates, first spacing groove 1a can't aim at second spacing groove 2 a.
The volume of the liquid receiving cavity 2b is larger than or equal to the volume of the melted hot melting piece 3, so that the melted hot melting piece 3 can be completely received.
In this implementation, the inner peripheral surface of one end of the first connecting pipe 1 is provided with a first clamping groove, the first clamping groove is annular, and the first clamping groove is coaxial with the first connecting pipe 1, the thermal stress compensation device of the hot-melt sleeve further comprises a first sealing ring, the coaxial clamping of the first sealing ring is in the first clamping groove, and the first sealing ring is sleeved on the second connecting pipe 2 and elastically abuts against the outer peripheral surface of the second connecting pipe 2.
The outer peripheral face of 2 one ends of second connecting pipe is provided with the second joint groove, the second joint groove is the annular, and the second joint groove with 2 coaxial of second connecting pipe, hot melt formula sleeve pipe thermal stress compensation arrangement still include second sealing washer 5, the coaxial joint of second sealing washer 5 in the second joint groove and the outer peripheral face elasticity butt of second sealing washer 5 in the inner peripheral face of first connecting pipe 1.
One of the two sealing modes can be selected optionally, or the two sealing modes are adopted simultaneously, so that the sealing effect of the connecting part of the first connecting pipe 1 and the second connecting pipe 2 is improved.
This embodiment still provides a preferred implementation mode, first joint groove 1a includes first guide inclined plane 1a1, second guide inclined plane 1a2, first guide inclined plane 1a1 with second guide inclined plane 1a2 is located respectively in first joint groove 1a along the both ends of the axis direction of first connecting pipe 1, and first guide inclined plane 1a1 with the interval between second guide inclined plane 1a2 is by being close to second joint groove 2a one side is kept away from second joint groove 2a one side is dwindled gradually.
The locking piece position 4 is located one end of the first clamping groove 1a is provided with a third guide inclined surface and a fourth guide inclined surface, the third guide inclined surface can be abutted to the first guide inclined surface 1a1, the fourth guide inclined surface can be abutted to the second guide inclined surface 1a2, the distance between the third guide inclined surface and the fourth guide inclined surface is gradually reduced from one end close to the second clamping groove 2a to one side far away from the second clamping groove 2a, the first guide inclined surface 1a1 is parallel to the third guide inclined surface, the second guide inclined surface 1a2 is parallel to the fourth guide inclined surface, when the hot melting piece 3 is melted, axial load is generated on the first connecting pipe 1 and the second connecting pipe 2 after axial deformation of the sleeve, and the axial load is decomposed into radial distribution of the first connecting pipe 1 or the second connecting pipe 2 by the first guide inclined surface 1a1, the second guide inclined surface 1a2, the third guide inclined surface and the fourth guide inclined surface And the component force drives the locking block 4 to slide into the second clamping groove 2a, so that the locking block 4 is prevented from being clamped with the first clamping groove 1 a.
The present embodiment further provides a specific implementation manner, the first connection pipe 1 includes a first joint 11, a first connection pipe body 12, and a second joint 13 coaxially and fixedly connected in sequence, the first joint 11, the first connection pipe body 12, and the second joint 13 are all cylindrical, one end of the first joint 11 connected to the first connection pipe body 12 is provided with a first external thread, one end of the first connection pipe body 12 connected to the first joint 11 is provided with a first internal thread, the first external thread is in fit connection with the first internal thread, one end of the second joint 13 connected to the first connection pipe body 12 is provided with a second external thread, one end of the first connection pipe body 12 connected to the second joint 13 is provided with a second internal thread, the second external thread is in fit connection with the second internal thread, that is, the end faces of the opposite ends of the first joint 11 and the second joint 13 are all embedded in the first connection pipe body 12, the end surfaces of the opposite ends of the first joint 11 and the second joint 13 are limiting surfaces at two ends of the sliding area of the second connecting pipe 2, the second connecting pipe 2 comprises an assembling pipe 21 and a second connecting pipe body 22, the outer peripheral surface of the second connecting pipe body 22 is provided with an annular protrusion 22a, the annular protrusion 22a can slide between the end surfaces of the opposite ends of the first joint 11 and the second joint 13, the assembling pipe 21 is coaxially sleeved on the second connecting pipe body 22 and is arranged at one end of the first connecting pipe body 12, the inner peripheral surface of the assembling pipe 21 is provided with a groove, the groove is encircled on the outer peripheral surface of the second connecting pipe body 22 to form the liquid receiving cavity 2b, the opposite end surfaces of the assembling pipe 21 and the annular protrusion 22a are encircled to form the second clamping groove 2a, and the structure is convenient for machining and assembling of the thermal-melting-type casing pipe thermal stress compensating device, the fitting pipe 21 and the second connection pipe 22 may be connected by a screw or an interference fit.
The working principle is as follows: this hot melt formula sleeve pipe thermal stress compensation arrangement is directly established ties on the sleeve pipe in the in-service use process, when the sleeve pipe is heated, hot melt formula sleeve pipe thermal stress compensation arrangement also can be heated, thereby lead to hot melt 3 is heated and melts, and hot melt 3 after melting flows in receive sap cavity 2b, thereby avoid right locking piece 4 slides in second spacing groove 2a causes to block, works as locking piece 4 is whole to slide in during second spacing groove 2a, first connecting pipe 1 with second connecting pipe 2 loses the joint of locking piece 4, at this moment first connecting pipe 1 can be relative second connecting pipe 2 axial slip to realize the axial deformation that the compensating sleeve pipe produced after being heated, in order to reach protective case's mesh.
The above description of the present invention does not limit the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the scope of the claims of the present invention.
Claims (8)
1. A thermal stress compensation device for a hot-melt bushing, comprising: the hot melting device comprises a first connecting pipe, a second connecting pipe, a hot melting piece and a locking block, wherein one end of the first connecting pipe is sleeved at one end of the second connecting pipe in a sliding manner; the inner circumferential surface of the first connecting pipe is provided with a first limiting groove; a second limiting groove is formed in the outer peripheral surface of the second connecting pipe, and the first limiting groove is arranged opposite to the second limiting groove; a liquid receiving cavity is formed in the second connecting pipe, and one end of the liquid receiving cavity is communicated with the second limiting groove; the hot melting piece is arranged on one side, far away from the first limiting groove, of the second limiting groove; one end of the locking block is arranged in the first limiting groove, the other end of the locking block is arranged in one side, close to the first limiting groove, of the second limiting groove, the thickness of the locking block is larger than that of the first limiting groove, and the thickness of the locking block is smaller than that of the second limiting groove;
when the hot melting piece is heated and melted, the locking block can completely slide into the second limiting groove.
2. The thermal stress compensation device of a hot-melt bushing according to claim 1, wherein the second limiting groove is an annular groove formed by recessing an outer circumferential surface of the second connecting pipe, and the second limiting groove is coaxial with the second connecting pipe.
3. The thermal stress compensation device of a hot-melt bushing according to claim 1, wherein the volume of the liquid receiving cavity is greater than or equal to the volume of the hot-melt element after melting.
4. The thermal stress compensation device for the hot-melt type sleeve according to claim 1, wherein a first clamping groove is formed in an inner peripheral surface of one end of the first connecting pipe, the first clamping groove is annular and is coaxial with the first connecting pipe, the thermal stress compensation device for the hot-melt type sleeve further comprises a first sealing ring, the first sealing ring is coaxially clamped in the first clamping groove, and the first sealing ring is sleeved on the second connecting pipe and elastically abuts against an outer peripheral surface of the second connecting pipe.
5. The thermal stress compensation device for the hot-melt type sleeve according to claim 4, wherein a second clamping groove is formed in an outer peripheral surface of one end of the second connecting pipe, the second clamping groove is annular and is coaxial with the second connecting pipe, the thermal stress compensation device for the hot-melt type sleeve further comprises a second sealing ring, the second sealing ring is coaxially clamped in the second clamping groove, and an outer peripheral surface of the second sealing ring is elastically abutted against an inner peripheral surface of the first connecting pipe.
6. The thermal stress compensation device for the hot-melt type casing according to claim 5, wherein the first engaging groove comprises a first guiding inclined surface and a second guiding inclined surface, the first guiding inclined surface and the second guiding inclined surface are respectively located at two ends of the first engaging groove along the axial direction of the first connecting pipe, and the distance between the first guiding inclined surface and the second guiding inclined surface is gradually reduced from a side close to the second engaging groove to a side far away from the second engaging groove.
7. The thermal stress compensation device of a hot-melt bushing according to claim 6, wherein a third guiding inclined surface and a fourth guiding inclined surface are disposed at one end of the locking block located in the first clamping groove, the third guiding inclined surface can abut against the first guiding inclined surface, the fourth guiding inclined surface can abut against the second guiding inclined surface, and a distance between the third guiding inclined surface and the fourth guiding inclined surface is gradually reduced from one end close to the second clamping groove to one side far away from the second clamping groove.
8. The thermally fused sleeve thermal stress compensating apparatus of claim 7, wherein said first guide ramp is parallel to said third guide ramp and said second guide ramp is parallel to said fourth guide ramp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921888501.2U CN211144394U (en) | 2019-11-04 | 2019-11-04 | Hot-melting type sleeve heat stress compensation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921888501.2U CN211144394U (en) | 2019-11-04 | 2019-11-04 | Hot-melting type sleeve heat stress compensation device |
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| CN211144394U true CN211144394U (en) | 2020-07-31 |
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| CN201921888501.2U Active CN211144394U (en) | 2019-11-04 | 2019-11-04 | Hot-melting type sleeve heat stress compensation device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110700765A (en) * | 2019-11-04 | 2020-01-17 | 长江大学 | Hot-melting type sleeve heat stress compensation device |
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2019
- 2019-11-04 CN CN201921888501.2U patent/CN211144394U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110700765A (en) * | 2019-11-04 | 2020-01-17 | 长江大学 | Hot-melting type sleeve heat stress compensation device |
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