CN204782910U - From inflation formula thermal recovery bore hole metal packer - Google Patents
From inflation formula thermal recovery bore hole metal packer Download PDFInfo
- Publication number
- CN204782910U CN204782910U CN201520301800.7U CN201520301800U CN204782910U CN 204782910 U CN204782910 U CN 204782910U CN 201520301800 U CN201520301800 U CN 201520301800U CN 204782910 U CN204782910 U CN 204782910U
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- packing element
- metal
- piston
- thermal recovery
- bore hole
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Abstract
The utility model provides a from inflation formula thermal recovery bore hole metal packer, the lower extreme is connected respectively on center tube and center tube top connection and lower clutch, the center tube outer wall sets up the metal packing element and carries out the application of force to the metal packing element and sit the urging means who seals, three -stage design down during the metal packing element is divided into, the middle section is the design of a circular arc section of thick bamboo, and rubber materials is packed to middle section circular arc section of thick bamboo inner chamber. Urging means includes cylinder liner, piston, urceolus, airtight space settings thermal energy solid material between piston upper end and the cylinder liner, the lower extreme butt of piston is at the up end of clamping ring. The utility model discloses a metal and building rubber compound formula packing element have changed that metal expandable sealing performance was poor in the past to and rubber materials is annotating the short problem of vapour well life, and adopts the bulging force of thermal energy material under high temperature to sit as the packing element and seal power, sits the mode of sealing simply effectively, has improved the reliability of thermal recovery horizontal well open hole packer, further perfect thermal recovery horizontal well well completion technology system.
Description
Technical field
The utility model relates to packer, specifically a kind of self-expansion type thermal recovery bore hole metal packer.
Background technology
The packing problem of open hole packer is a great problem that puzzlement thick oil horizontal well selective completion and segmentation well completion are implemented always, and high temperature during horizontal well thermal recovery steam injection has become a large bottleneck of restriction open hole packer.Under steam injection high temperature, elastomeric material packing element will lose efficacy within very short time in carbonization, was difficult to keep good sealing performance for a long time, will causes the failure of segmentation steam injection, and had a strong impact on the efficiency of thermal packer once lose efficacy.In addition, the thermal packer that we use now set Method compare complexity, running cost is higher, constructs more loaded down with trivial details, affects production efficiency.
For above problem, the utility model devises a kind of metal packer of horizontal well thermal recovery completion of brand new, and this packer adopts metal sealing mode, extends the application life of packer in down-hole.Self-expanding is adopted to set mode, simple to operate, simplify construction sequence.
Through retrieval, do not find constructed open source literature.
Summary of the invention
The purpose of this utility model is to provide a kind of self-expansion type thermal recovery bore hole metal packer, adopt metal and building rubber compound formula packing element, change expansion of metal poor sealing performance in the past, and elastomeric material is in short problem in steam injection well application life, and adopt thermal expansion material expansion force at high temperature to set power as packing element, set mode simply effective, improve the reliability of horizontal well thermal recovery open hole packer, perfect further horizontal well thermal recovery well-completing process system.
The purpose of this utility model realizes by following technical measures:
This self-expansion type thermal recovery bore hole metal packer comprises the top connection and lower contact that central tube and central tube upper and lower side connect respectively, described central tube outer wall arranges metal packing element and to exert a force the force application mechanism set to metal packing element, described metal packing element is divided into upper, middle and lower three sections design, wherein upper and lower section is designed for cylindrical drum, and stage casing is designed for arc tube, stage casing arc tube lumen loading elastomeric material.
The purpose of this utility model also realizes by following technical measures:
Described metal packing element itself is made up of packing element body and the metal level shell that is wrapped in packing element body exterior, and the outer wall of described stage casing arc tube is designed to arc-shaped, and inwall is then designed to the W shape after 90-degree rotation to the inside.
Described metal packing element inwall is provided with insulating layer material.
Described force application mechanism comprises cylinder sleeve, piston, urceolus, described urceolus empty set is outside at central tube, urceolus lower end is connected on the pressure ring of metal packing element upper end setting, urceolus upper end connects cylinder sleeve, cylinder chamber is formed between described cylinder sleeve, urceolus, pressure ring, central tube, cylinder arranges piston in chamber, and the confined space between described piston upper end and cylinder sleeve arranges thermal expansion solid material, and the lower end of piston is connected to the upper surface of pressure ring.
Described cylinder sleeve, piston are sealed by heat seal mateiral with central tube and urceolus respectively.
Described outer barrel is also arranged by being used for the up locking device of limited piston.
Between described cylinder sleeve and top connection, also adjustable ring is set, between described metal packing element and lower contact, is also provided with adjustable ring.
Compared to prior art, the utility model has following beneficial effect:
1, the utility model adopts elastic metallic and building rubber compound formula packing element, has heat-barrier material in packing element, has accomplished the high temperature resistant and elastomeric combination of rubber of metal.Change in the past for bore hole packing expansion of metal poor sealing performance, and elastomeric material packing element is in short problem in steam injection well application life.
2, the utility model adopts self-expanding to set mode, the power that the expansion force at high temperature produced by thermal expansion material is set as packing element, change the self-sealing memory alloy material cost in the past adopted high, and adopt hydraulic pressure and machinery to set the problem of mode complexity.
3, effectively extend horizontal well thermal recovery open hole packer application life, reduce cost of production, improve recovery ratio, there is significant economic benefit and larger popularization and application space.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment of the present utility model.
In figure: top connection 1, adjustable ring 2, cylinder sleeve 3, piston 4, central tube 5, urceolus 6, locking device 7, pressure ring 8, metal packing element 9, lower contact 10.
Detailed description of the invention
Relevant detailed description of the present utility model and technology contents, coordinate accompanying drawing to be described as follows, but accompanying drawing only provides with reference to the use with explanation, is not used for being limited the utility model.
According to Fig. 1, this self-expansion type thermal recovery bore hole metal packer comprises the top connection 1 and lower contact 10 that central tube 5 and central tube upper and lower side connect respectively, described central tube outer wall arranges metal packing element 9 and to exert a force the force application mechanism set to metal packing element, described metal packing element 9 is divided into upper, middle and lower three sections design, wherein upper and lower section is designed for cylindrical drum, and stage casing is designed for arc tube, stage casing arc tube lumen loading elastomeric material.
Force application mechanism comprises cylinder sleeve 3, piston 4, urceolus 6, described urceolus empty set is outside at central tube, urceolus lower end is connected on the pressure ring 8 of metal packing element upper end setting, urceolus upper end connects cylinder sleeve, cylinder chamber is formed between described cylinder sleeve, urceolus, pressure ring, central tube, arrange piston 4 in cylinder chamber, the confined space between described piston upper end and cylinder sleeve arranges thermal expansion solid material, and the lower end of piston is connected to the upper surface of pressure ring.Outer barrel is also arranged by being used for the up locking device 7 of limited piston.
Metal packing element itself is made up of packing element body and the metal level shell that is wrapped in packing element body exterior.Metal packing element inwall is provided with insulating layer material.Described cylinder sleeve, piston are sealed by heat seal mateiral with central tube and urceolus respectively.Between cylinder sleeve and top connection, adjustable ring 2 is also set, between metal packing element and lower contact, is also provided with adjustable ring.
Top connection 1 and lower contact about 10 splicing sleeve respectively, top connection 1 is connected with adjustable ring 2, cylinder sleeve 3 and piston 4 are by the two ends of screwed connection at urceolus 6, cylinder sleeve 3, piston 4 are sealed by heat seal mateiral with central tube 5 and urceolus 6 respectively, and thermal expansion solid is housed in the confined space between cylinder sleeve 3 and piston 4.When steam injection is carried out in thermal recovery, downhole temperature constantly raises, when temperature is elevated to gasification point, thermal expansion solids gasification, it is descending that the expansion force produced promotes piston 4, promotes the pressure ring 8 of extruding lower end, pressure ring is extrusion metal packing element 9 then, the interlude outside of metal packing element 9 is designed to arc, and indoor design is " W " shape structure to the inside after 90-degree rotation, and arched center portion inner chamber is filled with elastomeric material.During pressure ring extruding, because packing element end does not have compression stroke, the interlude position of packing element is compressed, with the rubber compressive strain of metal thin-wall, thus completes setting of packing element.The interlude position that elastomeric material is housed possesses good elasticity, improve the reliability of bore hole packing, the structure of the arc-shaped cavity filled rubber material of metal packing element 9 middle part ensure that in the process of setting stressed even, and the isolation layer of metal packing element 9 inwall ensure that elastomeric material can not lose efficacy because of steam injection high temperature in carbonization.Urceolus 6 is equipped with locking device 7, locking device 7 completes the locking function to piston 4 by lock dog.While metal packing element 9 completes and sets, piston 4 is also lockable, and keeps the compressive state to packing element always, thus realizes forever setting of this packer.
In sum, first the self-expansion type thermal recovery bore hole metal packer designed by the utility model is by arranging isolation layer at the inwall of metal packing element, at the inside filling rubber of middle part, to improve sealing performance and the application life of thermal packer.Secondly, adopt self-expanding mode to set, meet thermogenetic expansion force promotion piston compression packing element by thermal expansion material and set, set mode reliably simple and safe, overcome existing packer construction complicated, longer dimension, the deficiency that the mode that sets is loaded down with trivial details.
The foregoing is only preferred embodiment of the present utility model, be not used to limit the scope of the claims of the present utility model, other use the equivalence of patent spirit of the present utility model to change, and all should all belong to the scope of the claims of the present utility model.
Claims (7)
1. a self-expansion type thermal recovery bore hole metal packer, comprise top connection and lower contact that central tube and central tube upper and lower side connect respectively, it is characterized in that, described central tube outer wall arranges metal packing element and to exert a force the force application mechanism set to metal packing element, described metal packing element is divided into upper, middle and lower three sections design, wherein upper and lower section is designed for cylindrical drum, and stage casing is designed for arc tube, stage casing arc tube lumen loading elastomeric material.
2. a kind of self-expansion type thermal recovery bore hole metal packer according to claim 1, it is characterized in that, described metal packing element itself is made up of packing element body and the metal level shell that is wrapped in packing element body exterior, the outer wall of described stage casing arc tube is designed to arc-shaped, and inwall is then designed to the W shape after 90-degree rotation to the inside.
3. a kind of self-expansion type thermal recovery bore hole metal packer according to claim 2, it is characterized in that, described metal packing element inwall is provided with insulating layer material.
4. a kind of self-expansion type thermal recovery bore hole metal packer according to claim 1, it is characterized in that, described force application mechanism comprises cylinder sleeve, piston, urceolus, described urceolus empty set is outside at central tube, urceolus lower end is connected on the pressure ring of metal packing element upper end setting, urceolus upper end connects cylinder sleeve, cylinder chamber is formed between described cylinder sleeve, urceolus, pressure ring, central tube, cylinder arranges piston in chamber, confined space between described piston upper end and cylinder sleeve arranges thermal expansion solid material, and the lower end of piston is connected to the upper surface of pressure ring.
5. a kind of self-expansion type thermal recovery bore hole metal packer according to claim 4, it is characterized in that, described cylinder sleeve, piston are sealed by heat seal mateiral with central tube and urceolus respectively.
6. a kind of self-expansion type thermal recovery bore hole metal packer according to claim 4, is characterized in that, described outer barrel is also arranged by being used for the up locking device of limited piston.
7. a kind of self-expansion type thermal recovery bore hole metal packer according to claim 4, is characterized in that, also arrange adjustable ring between described cylinder sleeve and top connection, be also provided with adjustable ring between described metal packing element and lower contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520301800.7U CN204782910U (en) | 2015-05-12 | 2015-05-12 | From inflation formula thermal recovery bore hole metal packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520301800.7U CN204782910U (en) | 2015-05-12 | 2015-05-12 | From inflation formula thermal recovery bore hole metal packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204782910U true CN204782910U (en) | 2015-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520301800.7U Expired - Fee Related CN204782910U (en) | 2015-05-12 | 2015-05-12 | From inflation formula thermal recovery bore hole metal packer |
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| Country | Link |
|---|---|
| CN (1) | CN204782910U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106285552A (en) * | 2015-05-12 | 2017-01-04 | 中国石油化工股份有限公司 | Self-expansion type thermal recovery bore hole metal packer |
| CN107387046A (en) * | 2017-08-03 | 2017-11-24 | 中国石油集团长城钻探工程有限公司 | A kind of thermal recovery produces integral tubular column |
-
2015
- 2015-05-12 CN CN201520301800.7U patent/CN204782910U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106285552A (en) * | 2015-05-12 | 2017-01-04 | 中国石油化工股份有限公司 | Self-expansion type thermal recovery bore hole metal packer |
| CN106285552B (en) * | 2015-05-12 | 2019-06-21 | 中国石油化工股份有限公司 | Self-expansion type thermal recovery naked eye metal packer |
| CN107387046A (en) * | 2017-08-03 | 2017-11-24 | 中国石油集团长城钻探工程有限公司 | A kind of thermal recovery produces integral tubular column |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 Termination date: 20190512 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |