CN207660585U - Elastic claw formula packer in thermal recovery oil well - Google Patents
Elastic claw formula packer in thermal recovery oil well Download PDFInfo
- Publication number
- CN207660585U CN207660585U CN201721855251.3U CN201721855251U CN207660585U CN 207660585 U CN207660585 U CN 207660585U CN 201721855251 U CN201721855251 U CN 201721855251U CN 207660585 U CN207660585 U CN 207660585U
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- piston
- ring
- seal
- cylinder barrel
- central tube
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Abstract
The utility model is related to elastic claw formula packers in a kind of thermal recovery oil well.Top connection is fixed in the packer central tube one end by backing-up screw, and the outside of central tube is equipped with cylinder barrel, seal receptacle and elevated-temperature seal packing element；Installation piston I and piston II in cylinder barrel, central tube form seal cavity with cylinder barrel, piston I and piston II, have a gas passage to be connected to the channel of central tube between cylinder barrel and piston II, conical section of the piston I outside cylinder barrel and the annular face contacts that rise；Seal receptacle fixes elevated-temperature seal packing element；The ring that rises is installed in elevated-temperature seal packing element.The utility model is innovated and is improved on previous thermal packer, realize the packing success between small-bore packer and big casing, improve packing effect and working efficiency, reduce cost, former old-fashioned packer packing is solved every not tight, and the problems such as swelling agent failure effect insulates effect, and cost caused by solving old-fashioned removing seal for packer difficulty increases.
Description
Technical field
The utility model belongs to the downhole tool field used in the production of oil field, more particularly to elastic claw formula is sealed in a kind of thermal production well
Every device.
Background technology
The method that existing packer mostly uses upper air, piston single-ring seal, cone to be directly pushed into packing element plays sealing
Effect.It is unstable due to underground situation（The variations such as pressure, temperature）All directly affect the sealing effect of packer, Yi Jifeng
Every device self problem.Single-ring seal, due to manufacture and assembling process in it is slightly improper, can all cause swelling agent leakage leak,
Packer is caused to go into the well failure.And down-hole pressure temperature is unstable, cone is directly pushed into packing element, all packing element heap can be caused to collapse,
Cone directly contacts the factors such as outer tension is uneven with packing element, cannot hold on to casing, considerably increases and insulates not tight wind
Danger.And pushed away under upper air, cone and will also result in that deblocking is difficult or even solution not envelope, cause economic loss.
Invention content
Purpose of utility model：
The utility model thermal packer efficiently solves the shortcomings of existing packer, completes small-bore packer
It insulates big casing and becomes possible, reduce cost, increase benefit.It is innovated and is improved on previous thermal packer, it is real
The packing success between small-bore packer and big casing is showed, has substantially increased packing effect, improve work efficiency, reduce
Cost solves former old-fashioned packer packing and insulates effect every not tight and swelling agent failure effect, in addition the utility model
The problems such as packer uses lower air inlet, above proposes deblocking, and cost caused by solving old-fashioned removing seal for packer difficulty increases.
Technical solution：
The utility model is achieved through the following technical solutions：
Top connection is fixed in elastic claw formula packer in a kind of thermal recovery oil well, central tube one end by backing-up screw, central tube
Outside is equipped with cylinder barrel, seal receptacle and elevated-temperature seal packing element；
Installation piston I and piston II in cylinder barrel, central tube and cylinder barrel, piston I and piston II form seal cavity, cylinder barrel with
There is a gas passage to be connected to the channel of central tube between piston II, conical section of the piston I outside cylinder barrel and the annular face contacts that rise；
Seal receptacle fixes elevated-temperature seal packing element；The ring that rises is installed in elevated-temperature seal packing element；
Irony rises, and ring is integrally cylindrical, and circumferentially even partition is that several wait arcs on the left of the ring that rises, and is had between such arc
Gap, ring left side upper surface of rising are contacted with elevated-temperature seal packing element face, and there are several grooves circumferentially in ring upper surface of rising, the ring right side of rising
Side lower surface is contacted with central tube face, has a buffer substrate tablet, buffer substrate tablet bottom to be contacted with I top surface of piston inside the ring that rises.
Elastic claw formula packer in the thermal recovery oil well, cylinder barrel and the interior placement of the seal cavity that piston I and piston II are formed
Swelling agent.
Elastic claw formula packer, seal receptacle are circumferentially divided into several arcs, have between arc and arc in the thermal recovery oil well
Gap.
Elastic claw formula packer in the thermal recovery oil well, piston I and piston II are respectively provided with four groups and use polytetrafluoroethylene (PTFE) system
At O-ring seal and the Sealing shield ring that matches.
Elastic claw formula packer in the thermal recovery oil well, rising between ring and central tube has one group to be made of polytetrafluoroethylene (PTFE)
O-ring seal III and the Sealing shield ring III that matches.
Advantage and effect：
The utility model has the following advantages that and advantageous effect：
The utility model uses bicyclic sealing（The sealing ring of two kinds of materials）Eight sealings, thus the wind that swelling agent leaks
Danger substantially reduces, and the holding time is long, reduces and is making the risk leaked with swelling agent in assembling process, increases validity.
Additionally, due to interior elastic claw is used, phenomenon of collapsing will not be pushed away to packing element generation scuffing when cone enters packing element, and outer tension is uniform, even if
Pressure is changed with temperature will not influence leakproofness, increase safety factor.Twice groove outside interior elastic claw makes interior elastic claw
Holding on to packing element makes it increase with sleeve interface, and heap does not collapse, and increases packing effect.The product makes osculum using interior elastic claw
Diameter packer packing is greatly reduced cost, is risen to 165 millimeters of ∮, spy for 132 millimeters by ∮ every big casing by being very unlikely to become possibility
It can rise in the case of different to 170 millimeters of ∮.
Description of the drawings
FIG. 1 is a schematic structural view of the utility model；
Fig. 2 is sectional view of the utility model along A-A;
Fig. 3 is sectional view of the utility model along B-B.
Reference sign：
1, top connection；2, backing-up screw；3, seal receptacle；4, rise ring；5, elevated-temperature seal packing element；6, piston I；7, Sealing shield ring
Ⅰ；8, O-ring seal；9, piston II；10, Sealing shield ring II；11, O-ring seal II；12, cylinder barrel；13, central tube；14, O-shaped
Sealing ring III；15, Sealing shield ring III；16, seal cavity.
Specific implementation mode
The utility model is described further below in conjunction with the accompanying drawings：
As depicted in figs. 1 and 2, elastic claw formula packer in a kind of thermal recovery oil well, 13 one end of central tube are solid by backing-up screw 2
Determine top connection 1, the outside of central tube 13 is equipped with cylinder barrel 12, seal receptacle 3 and elevated-temperature seal packing element 5；
Installation piston I 6 and piston II 9 in cylinder barrel 12, central tube 13 and cylinder barrel 12, piston I 6 and the formation of piston II 9
Seal cavity 16 has a gas passage and the channel of central tube 13 to be connected between cylinder barrel 12 and piston II 9, piston I 6 is in cylinder barrel
Conical section outside 12 is contacted with 4 face of ring of rising；Seal receptacle 3 fixes elevated-temperature seal packing element 5；It is equipped with and rises in elevated-temperature seal packing element 5
Ring 4；
Irony rises, and ring 4 is whole cylindrical, and circumferentially even partition is that several wait long arcs, such long arc in 4 left side of ring of rising
Between have gap, 4 left side upper surface of ring of rising is contacted with 5 face of elevated-temperature seal packing element, and there are several circumferentially recessed in 4 upper surface of ring of rising
Slot, 4 right side lower surface of ring of rising are contacted with 13 face of central tube, have a buffer substrate tablet, buffer substrate tablet bottom to be pushed up with piston I 6 inside the ring 4 that rises
Portion face contacts.Steam injection pressure enters cylinder barrel 12 by central tube 13 and piston II 9 and I 6 spreading of piston is pushed to rise ring 4, and the ring 4 that rises rises
Opening elevated-temperature seal packing element 5 makes it be sealed with casing-contact.
Elastic claw formula packer in the thermal recovery oil well, the seal cavity that cylinder barrel 12 is formed with piston I 6 and piston II 9
Swelling agent is placed in 16.Swelling agent can be the liquid swelling agents such as alcohol.Due to the sealing between piston II 9 and piston I 6
Cavity 16 adds swelling agent, and swelling agent is more steadily strong under the action of steam injection heat to shift piston I onto designated position,
Play the role of secondary power-assisted, the ring that makes to rise pushes elevated-temperature seal packing element 5 and the contact surface of casing to increase, latching elevated-temperature seal tightly
Packing element 5 reaches packing effect.
As shown in figure 3, elastic claw formula packer, seal receptacle 3 are circumferentially divided into several arcs, arc in the thermal recovery oil well
There is gap between arc；Seal receptacle 3 matches with the ring 4 that rises, and structure is similar, and the seal receptacle 3 of the structure does not influence high-temperature seal adhesive
Cylinder 5 expands, and ensure that the sealing function of packer.
Elastic claw formula packer in the thermal recovery oil well, piston I 6 and piston II 9 are respectively provided with four groups and use polytetrafluoroethyl-ne
O-ring seal made of alkene and the Sealing shield ring to match.Eight groups of O-ring seals and the Sealing shield ring to match can divide again
For four groups of exterior seal rings and the Sealing shield ring that matches and four groups of inner seal rings and the Sealing shield ring to match, exterior seal ring and interior
Polytetrafluoroethylene (PTFE) is respectively adopted in sealing ring and graphite rubber is made for material；The risk that swelling agent leaks is set to substantially reduce,
Holding time is long, reduces and is making the risk leaked with swelling agent in assembling process, increases the validity of packer.
Wherein, in piston I and piston II, Sealing shield ring I 7（Size is 113.5mm × 2.5mm）With O-ring seal 8
（Size is 112 × 3.55 millimeters）For external seal baffle ring and exterior seal ring, Sealing shield ring II 10（Size is 84 × 2.5 millimeters）
With O-ring seal 11（Size is 80 × 3.55 millimeters）For interior sealing baffle ring and inner seal ring.
Elastic claw formula packer in the thermal recovery oil well, rising between ring 4 and central tube 13 has to use a polytetrafluoroethylene (PTFE)
Manufactured O-ring seal III 14 and the Sealing shield ring III 15 to match；
Wherein, III size of O-ring seal is 80 × 3.55 millimeters, and III 15 size of Sealing shield ring is 80 × 2.5 millimeters.
Operation principle：
Steam injection pressure enters cylinder barrel by central tube and I spreading of piston II piston is pushed to rise ring, and rise ring spreading high-temperature seal adhesive
Cylinder makes it be sealed with casing-contact.Due to adding swelling agent, work of the swelling agent in steam injection heat between piston II and piston I
It is more steadily strong under to shift piston I onto designated position, play the role of secondary power-assisted, makes the ring promotion elevated-temperature seal packing element that rises
Increase with the contact surface of casing, latching elevated-temperature seal packing element tightly reaches packing effect.Piston bicyclic is sealed with using four
Effect solves swelling agent improper extremely easy leakage problems in making and assembling process, ensure that swelling agent is effective in storage life
Property.When the ring that rises so that pressure instability timing piston effect is not in place or unstable, the ring that rises will not be impacted, and tension is uniform, does not receive
Contracting, by elevated-temperature seal packing element tightly and bobbin seal, play the role of packing.The product is due to sealing and rising using bicyclic four
The technique of ring makes the big casing of small packers packing become possible to, for example, ∮ 132 insulates 165 casings.
Claims (5)
1. elastic claw formula packer in a kind of thermal recovery oil well, it is characterised in that：Central tube（13）One end passes through backing-up screw（2）It is fixed
Top connection（1）, central tube（13）Outside be equipped with cylinder barrel（12）, seal receptacle（3）With elevated-temperature seal packing element（5）；
Cylinder barrel（12）Interior installation piston I（6）With piston II（9）, central tube（13）With cylinder barrel（12）, piston I（6）With piston II
（9）Form seal cavity（16）, cylinder barrel（12）With piston II（9）Between have a gas passage and central tube（13）Channel connect
It is logical, piston I（6）In cylinder barrel（12）Outer conical section and the ring that rises（4）Face contacts；Seal receptacle（3）Fixed elevated-temperature seal packing element
（5）；Elevated-temperature seal packing element（5）The ring that rises inside is installed（4）；
Irony rises ring（4）Whole cylindrical, rise ring（4）Circumferentially even partition is several equal arcs in left side, between such arc
There is gap, rise ring（4）Left side upper surface and elevated-temperature seal packing element（5）Face contacts, and rise ring（4）Upper surface have several circumferentially
Groove, rise ring（4）Right side lower surface and central tube（13）Face contacts, and rise ring（4）There are a buffer substrate tablet, buffer substrate tablet bottom and work in inside
Plug I（6）Top surface contacts.
2. elastic claw formula packer in thermal recovery oil well according to claim 1, it is characterised in that：Cylinder barrel（12）With piston I（6）
With piston II（9）The seal cavity of formation（16）Interior placement swelling agent.
3. elastic claw formula packer in thermal recovery oil well according to claim 1, it is characterised in that：Seal receptacle（3）Circumferentially etc.
It is divided into several arcs, there is gap between arc and arc.
4. elastic claw formula packer in thermal recovery oil well according to claim 1, it is characterised in that：Piston I（6）With piston II
（9）Four groups are respectively provided with using O-ring seal made of polytetrafluoroethylene (PTFE) and the Sealing shield ring to match.
5. elastic claw formula packer in thermal recovery oil well according to claim 1, it is characterised in that：Rise ring（4）With central tube
（13）Between have one group using O-ring seal III made of polytetrafluoroethylene (PTFE)（14）With the Sealing shield ring III to match（15）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721855251.3U CN207660585U (en) | 2017-12-27 | 2017-12-27 | Elastic claw formula packer in thermal recovery oil well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721855251.3U CN207660585U (en) | 2017-12-27 | 2017-12-27 | Elastic claw formula packer in thermal recovery oil well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207660585U true CN207660585U (en) | 2018-07-27 |
Family
ID=62943751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721855251.3U Expired - Fee Related CN207660585U (en) | 2017-12-27 | 2017-12-27 | Elastic claw formula packer in thermal recovery oil well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207660585U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112302564A (en) * | 2019-07-29 | 2021-02-02 | 中国石油天然气股份有限公司 | Packer |
| CN112302600A (en) * | 2019-07-29 | 2021-02-02 | 中国石油天然气股份有限公司 | Thermal compensation type packer for fireflooding |
| CN112302562A (en) * | 2019-07-29 | 2021-02-02 | 中国石油天然气股份有限公司 | High-temperature packer for fireflooding |
| CN114233237A (en) * | 2021-12-31 | 2022-03-25 | 盘锦博程实业有限公司 | Laminated expanding type temperature control sealing device |
| CN114575777A (en) * | 2022-03-08 | 2022-06-03 | 淮安市井神钻采机具有限公司 | Thermal recovery packer |
-
2017
- 2017-12-27 CN CN201721855251.3U patent/CN207660585U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112302564A (en) * | 2019-07-29 | 2021-02-02 | 中国石油天然气股份有限公司 | Packer |
| CN112302600A (en) * | 2019-07-29 | 2021-02-02 | 中国石油天然气股份有限公司 | Thermal compensation type packer for fireflooding |
| CN112302562A (en) * | 2019-07-29 | 2021-02-02 | 中国石油天然气股份有限公司 | High-temperature packer for fireflooding |
| CN114233237A (en) * | 2021-12-31 | 2022-03-25 | 盘锦博程实业有限公司 | Laminated expanding type temperature control sealing device |
| CN114575777A (en) * | 2022-03-08 | 2022-06-03 | 淮安市井神钻采机具有限公司 | Thermal recovery packer |
| CN114575777B (en) * | 2022-03-08 | 2024-06-04 | 淮安市井神钻采机具有限公司 | Thermal recovery packer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180727 Termination date: 20191227 |