CN206554903U - Thermal stress compensator for casing of thermal production well - Google Patents
Thermal stress compensator for casing of thermal production well Download PDFInfo
- Publication number
- CN206554903U CN206554903U CN201720001742.5U CN201720001742U CN206554903U CN 206554903 U CN206554903 U CN 206554903U CN 201720001742 U CN201720001742 U CN 201720001742U CN 206554903 U CN206554903 U CN 206554903U
- Authority
- CN
- China
- Prior art keywords
- outer tube
- compensator
- tube
- central tube
- sleeve
- Prior art date
- 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.)
- Active
Links
- 230000008646 thermal stress Effects 0.000 title claims abstract description 35
- 238000004519 manufacturing process Methods 0.000 title claims description 28
- 239000000463 material Substances 0.000 claims abstract description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 229910002804 graphite Inorganic materials 0.000 claims description 5
- 239000010439 graphite Substances 0.000 claims description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 239000011651 chromium Substances 0.000 claims description 3
- 239000012943 hotmelt Substances 0.000 abstract description 9
- 238000011084 recovery Methods 0.000 abstract description 6
- 238000007789 sealing Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 2
- 238000010793 Steam injection (oil industry) Methods 0.000 description 8
- 238000010008 shearing Methods 0.000 description 6
- 238000007514 turning Methods 0.000 description 5
- 239000007787 solid Substances 0.000 description 4
- 230000035882 stress Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- -1 steam Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Joints Allowing Movement (AREA)
Abstract
An embodiment of the utility model provides a thermal recovery well casing thermal stress compensator, include: the hot melt pipe comprises a central pipe, an outer pipe, a short sleeve and an upper joint, wherein one end of the short sleeve is connected with the upper joint, the other end of the short sleeve is coaxially connected with one end of the outer pipe, the other end of the outer pipe is in sliding sealing fit with the central pipe, a safety pin used for fixing the central pipe and the outer pipe is arranged between the central pipe and the outer pipe, and a locking device used for limiting the relative position of the central pipe and the outer pipe is further arranged on the inner side of the outer pipe and is made of a hot melt material. The utility model discloses a set up the safety pin that is used for fixed center tube and outer tube between the center tube of compensator and outer tube to set up the hot melt locking device who is used for injecing center tube and outer tube relative position in the outer tube inboard, can realize going into the in-process under the sleeve pipe and protect the safety pin through locking device, prevent effectively that safety shear pin from being worn to hinder the reason and being cut in advance.
Description
Technical field
The utility model is related to thermal production well sleeve servicing unit, more particularly to a kind of thermal production well sleeve thermal stress compensator,
Belong to oil-gas field development technical field.
Background technology
In the production process of thick oil thermal extraction, the maximum reason of casing failure is exactly that sleeve pipe is born when steam injection is heated
Tensile stress, compression stress is born after cooling again, causes screw thread to destroy or casing deformation, influences later stage production operation.
Sleeve compensator claims tubular type telescopic joint, is the compensation device of hot fluid pipeline, is mainly used in after rectilinear duct additionally arranges
The axial thermal expansion displacement absorption compensation of appearance.Suitable for hot water, steam, grease type medium, pass through sliding sleeve compensator
Sliding motion, reaches the compensation of thermal expansion.So, connection thermal stress compensator can efficiently solve casing deformation on sleeve pipe
The problem of.
Routine sleeve compensator special for thermal production well principle is substantially similar at present, and central tube and outer tube are connected by mechanical shear pin
Connect, in steam injection, when thermal stress is more than shear pin shearing force, shear pin is cut, and central tube and outer tube relative can be slided, compensator
Start working, realize the flexible compensation of sleeve pipe.
The disadvantage that existing conventional sleeve compensator special for thermal production well is present is that shear pin shearing force is smaller, and sleeve pipe is in tripping in
During may be in confused situation because of underground, cause shear pin by mill resistance reason easily cut in advance.Shear pin is cut in advance, a side
Face, causes compensation distance to be taken in advance, compensating action can not be played during steam injection；On the other hand, tripping in is continued in sleeve pipe
Cheng Zhong, sleeve pipe thermal compensator can not transmit moment of torsion downwards, and influence sleeve pipe continues tripping in and later stage production operation.So, it is badly in need of
New casing thermal stress compensator is improved to meet the production of thick oil thermal extraction.
Utility model content
The utility model embodiment provides a kind of thermal production well sleeve thermal stress compensator, by the central tube in compensator with
The safety pin of fixed center pipe and outer tube is provided between outer tube, and restriction central tube is provided for and outer on the inside of outer tube
The hot melt locking device of pipe relative position, it is possible to achieve safety pin is protected by locking device during sleeve pipe tripping in,
Effectively prevent safe shear pin from being cut in advance by mill resistance reason.
The thermal production well sleeve thermal stress compensator that the utility model embodiment is provided, including：Central tube, outer tube, short sleeve
And top connection, described short sleeve one end connects the top connection, and the short sleeve other end and described outer tube one end are coaxially connected,
The outer tube other end is slidingly sealed cooperation with the central tube, is provided between the central tube and the outer tube for fixing
It is additionally provided with the inside of the safety pin of the central tube and the outer tube, the outer tube outside for limiting the central tube and being described
The locking device of pipe relative position, wherein, the locking device is made of heat-fusible materials.
In the embodiment of the utility model one, above-mentioned locking device is the bushing being made of PVC plastic.
In the embodiment of the utility model one, above-mentioned short sleeve is described by coordinating joint to be connected with the outer coaxial tube
Outer tube is slidingly sealed cooperation by adapter sleeve and the central tube.
In the embodiment of the utility model one, above-mentioned central tube is provided with small joint with one end that the outer tube is engaged.
In the embodiment of the utility model one, above-mentioned locking device be located at the outer tube on the inside of the small joint with it is described
Between cooperation joint.
In the embodiment of the utility model one, the height being connected with the adapter sleeve is installed between above-mentioned central tube and outer tube
Warm seal.
In the embodiment of the utility model one, above-mentioned high temperature seal includes big gasket ring, the graphite annulus and small being sequentially connected
Gasket ring.
In the embodiment of the utility model one, above-mentioned compensator is processed using resistant material.
In the embodiment of the utility model one, above-mentioned compensator surface uses high temperature resistant chromium material coating.
Based on above-mentioned, the thermal production well sleeve thermal stress compensator that the utility model embodiment is provided, by compensator
The safety pin of fixed center pipe and outer tube is provided between central tube and outer tube, and is provided on the inside of outer tube in restriction
Heart pipe and the hot melt locking device of outer tube relative position, it is possible to achieve protected and pacified by locking device during sleeve pipe tripping in
Full pin, effectively prevents safe shear pin from being cut in advance by mill resistance reason.
During sleeve pipe tripping in, moment of torsion can be transmitted by just turning to downhole tool.When carrying out thermal recovery after completion, heat
Fusibleness locking device is raised because of oil temperature, melted by heat, and locking action disappears.In steam injection, when thermal stress is more than safety
During pin shearing force, safety pin is cut, and central tube and outer tube relative can be slided, and compensator is started working, and realizes sleeve pipe
Flexible compensation.
Brief description of the drawings
, below will be to embodiment or existing in order to illustrate more clearly of the utility model or technical scheme of the prior art
The accompanying drawing used required in technology description is briefly described, it should be apparent that, drawings in the following description are this practicalities
Some new embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
The thermal production well sleeve thermal stress compensator structural representation that Fig. 1 provides for the embodiment of the utility model one；
The thermal production well sleeve thermal stress compensator structural representation that Fig. 2 provides for the another embodiment of the utility model；
The thermal production well sleeve thermal stress compensator structural representation that Fig. 3 provides for the utility model another embodiment；
The sleeve pipe thermal stress compensator structural representation that Fig. 4 provides for the utility model another embodiment.
Description of reference numerals：
1：Central tube；
2：Outer tube；
3：Short sleeve；
4：Top connection；
5：Safety pin；
6：Locking device；
7：Coordinate joint；
8：Adapter sleeve；
91：Big gasket ring；
92：Graphite annulus；
93：Small gasket ring；
10：Small joint；
6’：Bushing；
8’：Pressure cap.
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that retouched
The embodiment stated is a part of embodiment of the utility model, rather than whole embodiments.Based on the implementation in the utility model
Example, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not paid is belonged to
The scope of the utility model protection.
The sleeve pipe thermal stress compensator structural representation that Fig. 1 provides for the embodiment of the utility model one.As shown in figure 1, this
The thermal production well sleeve thermal stress compensator that embodiment is provided includes：Central tube 1, outer tube 2, short sleeve 3 and top connection 4.
Wherein, described one end of short sleeve 3 connects the top connection 4, the other end of short sleeve 3 and described one end of outer tube 2
Coaxially connected, the other end of outer tube 2 is slidingly sealed cooperation with the central tube 1.Between the central tube 1 and the outer tube 2
The safety pin 5 for fixing the central tube 1 and the outer tube 2 is provided with, the inner side of outer tube 2 is additionally provided with for limiting
The central tube 1 and the locking device 6 of the relative position of outer tube 2, and the locking device 6 uses heat-fusible materials to be made.
It is understood that in actual applications, the connector as compensation between sleeve pipe of top connection 4, i.e., on connect
First 4 other end connection sleeve pipe or screen casing.
Exemplary, it can be connected through a screw thread, also may be used between short sleeve 3 and outer tube 2 between top connection 4 and short sleeve 3
To be connected by threaded coaxial.
The sleeve pipe thermal stress compensator that the present embodiment is provided, during sleeve pipe tripping in producing well projected depth, is used
Solid state is presented in the locking device that heat-fusible materials are made, and plays the relative position of locking action, limitation central tube and outer tube,
Effectively prevent safe shear pin from being cut in advance by mill resistance reason.During sleeve pipe tripping in, by safety pin by central tube with
Outer tube is fixed together, and then can transmit moment of torsion by just turning to downhole tool.
When carrying out thermal recovery after completion, hot melt locking device is raised because of oil temperature, and melted by heat, locking action disappears
Lose.In steam injection, when thermal stress is more than safety pin shearing force, safety pin is cut, and central tube and outer tube can be relative
Slide, compensator is started working, and realizes the flexible compensation of sleeve pipe.
The sleeve pipe thermal stress compensator structural representation that Fig. 2 provides for the another embodiment of the utility model.As shown in Fig. 2
The thermal production well sleeve thermal stress compensator that the present embodiment is provided includes：Central tube 1, outer tube 2, short sleeve 3 and top connection 4.
Wherein, described one end of short sleeve 3 connects the top connection 4, the other end of short sleeve 3 and described one end of outer tube 2
Coaxially connected, the other end of outer tube 2 is slidingly sealed cooperation with the central tube 1.Between the central tube 1 and the outer tube 2
The safety pin 5 for fixing the central tube 1 and the outer tube 2 is provided with, the inner side of outer tube 2 is additionally provided with for limiting
The central tube 1 and the locking device 6 of the relative position of outer tube 2, and the locking device 6 uses heat-fusible materials to be made.
Further, the present embodiment leads on the basis of embodiment illustrated in fig. 1 between the short sleeve 3 and the outer tube 2
Cross cooperation joint 7 coaxially connected, the outer tube 2 is slidingly sealed cooperation by adapter sleeve 8 and the central tube 1.
Further, as a kind of preferably embodiment, be provided between the central tube 1 and outer tube 2 with it is described tight
Admittedly the high temperature seal of the connection of set 8.
As an alternative embodiment, above-mentioned high temperature seal includes big gasket ring 91, the graphite annulus 92 being sequentially connected
With small gasket ring 93.
The sleeve pipe thermal stress compensator that the present embodiment is provided, during sleeve pipe tripping in producing well projected depth, is used
Solid state is presented in the locking device that heat-fusible materials are made, and plays the relative position of locking action, limitation central tube and outer tube,
Effectively prevent safe shear pin from being cut in advance by mill resistance reason.During sleeve pipe tripping in, by safety pin by central tube with
Outer tube is fixed together, and then can transmit moment of torsion by just turning to downhole tool.
In practical application, the sleeve pipe thermal stress compensator that the present embodiment is provided is by top connection connection sleeve pipe or screen casing,
After thermal production well injection high-temperature steam, compensator can absorb thermal stress, and hot melt locking device, which is melt, to be melted, what thermal stress was produced
Axial thrust load cuts safety pin, and central tube and outer tube relative can be slided, and offset the mistake that sleeve pipe is produced during steam injection is handled up
Carry axial stress so that thermal stress is alleviated to sleeve pipe yield limit, reach the purpose for preventing that thermal production well sleeve from damaging.
Further, high temperature seal, and connection sealing position welding, sealing material are installed between central tube and outer tube
Material selects soft graphite ring, and it has intensity big, and coefficient of friction is small (0.04~0.10), and not aging, effect is good, easy to maintenance etc.
Feature, ensure that the performance of the instrument high temperature high voltage resistant, and instrument compensation performance repeatedly.
It is noted that above-described embodiment can also further simplify, such as：Short sleeve is directly connected to outer barrel, in
Cooperation is directly slidingly sealed between heart pipe and outer tube；Again for example：Seal, but premise need not be installed between adapter sleeve and central tube
It is that sliding sealing surface has enough machining accuracies.
The sleeve pipe thermal stress compensator structural representation that Fig. 3 provides for the utility model another embodiment.As shown in figure 3,
The thermal production well sleeve thermal stress compensator that the present embodiment is provided includes：Central tube 1, outer tube 2, short sleeve 3 and top connection 4.
Wherein, described one end of short sleeve 3 connects the top connection 4, the other end of short sleeve 3 and described one end of outer tube 2
Coaxially connected, the other end of outer tube 2 is slidingly sealed cooperation with the central tube 1.Between the central tube 1 and the outer tube 2
The safety pin 5 for fixing the central tube 1 and the outer tube 2 is provided with, the inner side of outer tube 2 is additionally provided with for limiting
The central tube 1 and the locking device 6 of the relative position of outer tube 2, and the locking device 6 uses heat-fusible materials to be made.
Further, by coordinating joint 7 coaxially connected between the short sleeve 3 and the outer tube 2, the outer tube 2 leads to
Cross adapter sleeve 8 and be slidingly sealed cooperation with the central tube 1.
Further, the present embodiment is on the basis of embodiment illustrated in fig. 2, and adapter sleeve 8 can specifically use pressure cap 8 ', lock
Determine device 6 and be specifically as follows the bushing 6 ' being made of PVC plastic.
The sleeve pipe thermal stress compensator that the present embodiment is provided, during sleeve pipe tripping in producing well projected depth, is used
Solid state is presented in the bushing that PVC plastic is made, and plays the relative position of locking action, limitation central tube and outer tube, effectively anti-
Only safe shear pin is cut in advance by mill resistance reason.During sleeve pipe tripping in, central tube is consolidated with outer tube by safety pin
It is scheduled on together, and then moment of torsion can be transmitted by just turning to downhole tool.
When carrying out thermal recovery after completion, hot melt locking device is raised because of oil temperature, and melted by heat, locking action disappears
Lose.In steam injection, when thermal stress is more than safety pin shearing force, safety pin is cut, and central tube and outer tube can be relative
Slide, compensator is started working, and realizes the flexible compensation of sleeve pipe.
Further, because pressure cap 8 ' and bushing 6 ' are simple in construction, easily manufacture.In actual applications, both can be with
Construction requirement is met, instrument manufacturing cost can be saved again.
The sleeve pipe thermal stress compensator structural representation that Fig. 4 provides for the utility model another embodiment.As shown in figure 4,
The thermal production well sleeve thermal stress compensator that the present embodiment is provided includes：Central tube 1, outer tube 2, short sleeve 3 and top connection 4.
Wherein, described one end of short sleeve 3 connects the top connection 4, the other end of short sleeve 3 and described one end of outer tube 2
Coaxially connected, the other end of outer tube 2 is slidingly sealed cooperation with the central tube 1.Between the central tube 1 and the outer tube 2
The safety pin 5 for fixing the central tube 1 and the outer tube 2 is provided with, the inner side of outer tube 2 is additionally provided with for limiting
The central tube 1 and the locking device 6 of the relative position of outer tube 2, and the locking device 6 uses heat-fusible materials to be made.
Further, by coordinating joint 7 coaxially connected between the short sleeve 3 and the outer tube 2, the outer tube 2 leads to
Cross adapter sleeve 8 and be slidingly sealed cooperation with the central tube 1.
Further, as a kind of preferably embodiment, be provided between the central tube 1 and outer tube 2 with it is described tight
Admittedly the high temperature seal of the connection of set 8.Wherein, the high temperature seal includes big gasket ring 91, graphite annulus 92 and the pulvinulus being sequentially connected
Ring 93.
Further, the present embodiment is on the basis of above-described embodiment, for convenience central tube, outer tube and highly dense sealing
Assemble, as a kind of preferably embodiment, can also be provided with central tube 1 and one end that outer tube 2 is engaged small
Joint 10.
Exemplary, small joint 10 can be in Taper Pipe shape.
Further, locking device 6 is located between the small joint 10 of the inner side of outer tube 2 and the cooperation joint 7.
The sleeve pipe thermal stress compensator that the present embodiment is provided, during sleeve pipe tripping in producing well projected depth, is used
Solid state is presented in the bushing that PVC plastic is made, and plays the relative position of locking action, limitation central tube and outer tube, effectively anti-
Only safe shear pin is cut in advance by mill resistance reason.During sleeve pipe tripping in, central tube is consolidated with outer tube by safety pin
It is scheduled on together, and then moment of torsion can be transmitted by just turning to downhole tool.
When carrying out thermal recovery after completion, hot melt locking device is raised because of oil temperature, and melted by heat, locking action disappears
Lose.In steam injection, when thermal stress is more than safety pin shearing force, safety pin is cut, and central tube and outer tube can be relative
Slide, compensator is started working, and realizes the flexible compensation of sleeve pipe.
It is noted that as preferably embodiment in the various embodiments described above, compensator is added using resistant material
Work, lifts the service life of sleeve pipe aid, and then ensure the lasting along smoothly production of whole thermal production well.
Further, because thermal production well oil temperature is higher, in order to lift the resistance to elevated temperatures of sleeve pipe aid, may be used also
To use high temperature resistant chromium material coating on compensator surface.
The utility model as completion tubular column a part, with the strength character consistent with selected sleeve pipe, its internal diameter with
The casing inner diameter used cooperatively is consistent, and external diameter is adapted with drilling well hole diameter, it is ensured that have the annular clearance needed for enough well cementation, with
Ensure cementing quality, it has good air-tightness, it is ensured that will not be leaked in heat note, thermal recovery and well cementing process, it has
Thermo-chemical stability and corrosion resistance, to ensure the service life of oil well, the utility model can also use as pre- in lifted simultaneously
Other anti-casing failure technologies such as stress, to reach the purpose of integrated control casing failure.
Finally it should be noted that：Various embodiments above is only limited to illustrate the technical solution of the utility model, rather than to it
System；Although the utility model is described in detail with reference to foregoing embodiments, one of ordinary skill in the art should
Understand：It can still modify to the technical scheme described in foregoing embodiments, or to which part or whole
Technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly
The scope of each embodiment technical scheme of type.
Claims (9)
1. a kind of thermal production well sleeve thermal stress compensator, including central tube, outer tube, short sleeve and top connection, the short sleeve one
The end connection top connection, the short sleeve other end and described outer tube one end are coaxially connected, the outer tube other end with it is described
Central tube is slidingly sealed cooperation；Characterized in that,
The safety pin for fixing the central tube and the outer tube is provided between the central tube and the outer tube, it is described
The locking device for limiting the central tube and the outer tube relative position is additionally provided with the inside of outer tube, the locking device is adopted
It is made of heat-fusible materials.
2. compensator according to claim 1, it is characterised in that the short sleeve is by coordinating joint and the outer tube same
Axle is connected, and the outer tube is slidingly sealed cooperation by adapter sleeve and the central tube.
3. compensator according to claim 2, it is characterised in that be provided between the central tube and outer tube with it is described tight
Gu cover the high temperature seal of connection.
4. compensator according to claim 3, it is characterised in that the high temperature seal includes the big pad being sequentially connected
Ring, graphite annulus and small gasket ring.
5. compensator according to claim 1, it is characterised in that one end that the central tube is engaged with the outer tube is set
It is equipped with small joint.
6. compensator according to claim 5, it is characterised in that the locking device is located at described on the inside of the outer tube
Between small joint and the cooperation joint.
7. compensator according to claim 1, it is characterised in that the locking device is the lining being made of PVC plastic
Set.
8. compensator according to claim 1, it is characterised in that the compensator is processed using resistant material.
9. compensator according to claim 1, it is characterised in that the compensator surface is applied using high temperature resistant chromium material
Layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720001742.5U CN206554903U (en) | 2017-01-03 | 2017-01-03 | Thermal stress compensator for casing of thermal production well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720001742.5U CN206554903U (en) | 2017-01-03 | 2017-01-03 | Thermal stress compensator for casing of thermal production well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206554903U true CN206554903U (en) | 2017-10-13 |
Family
ID=60359106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720001742.5U Active CN206554903U (en) | 2017-01-03 | 2017-01-03 | Thermal stress compensator for casing of thermal production well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206554903U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109899003A (en) * | 2017-11-27 | 2019-06-18 | 中石化石油工程技术服务有限公司 | Hot melten type casing thermal stress autocompensation installation |
| CN110159210A (en) * | 2019-04-25 | 2019-08-23 | 中国地质大学（武汉） | A kind of wave displacement compensation device |
-
2017
- 2017-01-03 CN CN201720001742.5U patent/CN206554903U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109899003A (en) * | 2017-11-27 | 2019-06-18 | 中石化石油工程技术服务有限公司 | Hot melten type casing thermal stress autocompensation installation |
| CN110159210A (en) * | 2019-04-25 | 2019-08-23 | 中国地质大学（武汉） | A kind of wave displacement compensation device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102322237B (en) | Self-expansion packer | |
| CN206554903U (en) | Thermal stress compensator for casing of thermal production well | |
| CN107269244A (en) | Ring packing assembly | |
| CN103883277A (en) | Thermal recovery seal assembly | |
| NO333342B1 (en) | Redundant sealing structure for composite risers with metal liners | |
| CN211314158U (en) | Improved framework rubber cylinder of packer | |
| CN208122775U (en) | A kind of anti-rotational safety joint of band thermal compensation | |
| CN204327040U (en) | Bicone anchoring type steam injection packer | |
| CN110924888A (en) | Multifunctional metal sealing type casing head | |
| CN104963640A (en) | Horizontal well coiled tubing lock type hydraulic bit feeding and alarming system | |
| CN104131800B (en) | Thermal production well annular space security control instrument | |
| CN212479153U (en) | Multifunctional metal sealing type casing head | |
| CN101324178B (en) | Casing tube heightening well head safety compensation apparatus | |
| CN104295278A (en) | Thermal recovery compensation sealed pipe column | |
| CN107605431A (en) | Air drilling underground fire extinguishing pipe nipple | |
| CN103206188A (en) | Isolation packer | |
| CN207111032U (en) | A kind of high temperature steam injection oil recovery triple seal blowout prevention box | |
| CN205477513U (en) | Steam injection packer | |
| CN207260988U (en) | A kind of high temperature high voltage resistant ultra-deep slim hole completion packer | |
| CN207728338U (en) | Ring packing assembly | |
| CN202090885U (en) | Self-expansion packer | |
| CN206785323U (en) | A kind of thermal compensation formula safety joint | |
| CN209761356U (en) | Expansion joint for thermal production well | |
| CN206625815U (en) | A kind of anti-leak thermal extraction casing head | |
| CN215672159U (en) | Compensator under thermal recovery oil well |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |