Hot-melting type sleeve heat stress compensation device
阅读说明:本技术 一种热熔式套管热应力补偿装置 (Hot-melting type sleeve heat stress compensation device ) 是由 黄志强 黄鹏 黄浩 于 2019-11-04 设计创作,主要内容包括:本发明公开一种热熔式套管热应力补偿装置,包括:第一连接管、第二连接管、热熔件及锁块,所述第一连接管的一端滑动套设于所述第二连接管的一端;所述第一连接管的内周面设置有第一限位槽;所述第二连接管的外周面设置有第二限位槽,所述收液腔的一端与所述第二限位槽连通;所述热熔件设置于所述第二限位槽远离所述第一限位槽的一侧;所述锁块的一端内置于所述第一限位槽,所述热熔件受热熔化,当所述锁块全部滑入所述第二限位槽时,所述第一连接管与所述第二连接管失去所述锁块的卡接,此时所述第一连接管可相对所述第二连接管轴向滑动,从而实现补偿套管受热后产生的轴向形变。(The invention discloses a hot-melt sleeve thermal stress compensation device, which comprises: 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.)
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 casing according to claim 1, 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 casing 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 1, 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.
Technical Field
The invention relates to the technical field of petroleum engineering, in particular to a hot-melt type casing pipe thermal stress compensation device.
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.
Disclosure of Invention
The invention aims to overcome the technical defects and provide a hot-melt sleeve thermal stress compensation device, aiming at compensating the axial deformation of a sleeve after being heated so as to achieve the purpose of protecting the sleeve.
In order to achieve the above technical object, a thermal stress compensation device for a hot-melt bushing according to an embodiment of the present invention includes: 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 invention has the beneficial effects that: 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 diagram of a half-section of one 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 apparent, the present invention is described in further 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
One end of the first connecting
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
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
The volume of the liquid receiving cavity 2b is larger than or equal to the volume of the melted
In this implementation, the inner peripheral surface of one end of the first connecting
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
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
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
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
The present embodiment further provides a specific implementation manner, the
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
The above-described embodiments of the present invention should not be construed as limiting 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 protection scope of the claims of the present invention.
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