CN209212203U - Underground metal packer - Google Patents
Underground metal packer Download PDFInfo
- Publication number
- CN209212203U CN209212203U CN201821724001.0U CN201821724001U CN209212203U CN 209212203 U CN209212203 U CN 209212203U CN 201821724001 U CN201821724001 U CN 201821724001U CN 209212203 U CN209212203 U CN 209212203U
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- CN
- China
- Prior art keywords
- wall
- packer
- annular container
- central tube
- metal
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- 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.)
- Withdrawn - After Issue
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Abstract
The utility model relates to petroleum industry downhole packer technical fields, are applied to thermal production well layerwise production.Underground metal packer, including central tube are set with closed annular container in the periphery of central tube, and the annular container has an outer wall and an inner wall, and the outer wall is the malleable metal material of tool, and liquid is filled in annular container.Since the packer of the utility model is provided with canister and fills liquid, packer is not in sealing element ageing failure problem, and sealing life is long and reliable.
Description
Technical field
The present invention relates to petroleum industry thermal production well downhole packer technical fields, insulate more particularly to a kind of underground metal
Device.
Background technique
In viscous crude field development process, water filling steam thermal recovery is most common development scheme.In steam injection process, downhole temperature
It can reach 300 DEG C or more, the temperature in oil recovery process also can be more than 200 DEG C.It is usually used in oil well with lead as main sealing material
The packer of material, this packer sealing pressure is low, and the service life is short.In order to solve this problem, Chinese Patent Application No.
201520301800.7,2015 applying date May 12nd, patent name " a kind of self-expansion type thermal recovery naked eye metal packer "；
In addition, Chinese Patent Application No. 200720011858.3, the applying date on 04 26th, 2007, patent name " plugging device ", this two
A patent respectively discloses one kind using metal as shell, using rubber as the packer sealing part of inner core.It is common existing for this product
The disadvantage is that packer, during steam injection, the rubber inner core meeting quick aging of sealing element is hardened, and volume-diminished loses sealing
Ability.
Summary of the invention
In order to solve the above technical problems, having invented underground metal packer, solves packer in the prior art and use rubber
The non-metallic seals such as glue Problem of Failure easy to aging.
To achieve the above object, the present invention adopts the following technical scheme:
A kind of underground metal packer, including central tube are set with closed annular container in the periphery of central tube, described
Annular container have an outer wall and an inner wall, the outer wall is the malleable metal material of tool, in annular container
It is filled with liquid.
The central tube and outer wall together constitutes annular container, and the outer surface of central tube constitutes the interior of annular container
Wall；One end of the outer wall or two ends are equipped with baffle ring, and baffle ring covers on central tube periphery；Baffle ring, central tube and outer wall are common
Constitute annular container；One end of the annular container or two ends are equipped with fluid reservoir, and baffle ring is equipped with channel, and fluid reservoir passes through
Channel is connected to the inner cavity of annular container；The outer wall is in watt prismatic；It is attached that the outer surface of the outer wall is attached with soft metal
Layer；The attached layer material in soft metal of the outer surface attachment of the outer wall is lead, metal, aluminium, aluminium alloy or red copper；The liquid
Body is water or ethyl alcohol；The metal material is stainless steel, carbon steel, red copper, aluminum or aluminum alloy.
Technological merit of the invention is:
1, underground metal packer of the invention is provided with the closed metal ring container with ductility outer wall,
Liquid has been filled in container, can be needed to select refillable water or other liquid according to working condition pressure.When thermal production well infuses steam, underground
Temperature can reach 300 degree or more, and by taking water as an example, saturated vapour pressure of the water under 300 degree can reach 8.6MPa.In 8.6MPa pressure
Under, the outer wall expansion of the annular container of packer seals oil jacket annulus.Due to using the packer sealing part of all-metal, benefit
Use the saturated vapour pressure of liquid as pressure source, packer of the invention is not in sealing element ageing failure problem, sealing
Service life is long and reliable.
2, it is attached to the attached layer in soft metal in the outer wall outer surface of annular container, packer of the invention is made to be suitable for underground
The possible coarse operating condition of internal surface of sleeve pipe, sealing effect are more preferable.
3, liquid is filled it can be selected that can need to select according to sealed pressure corresponding in packer annular container of the present invention
Liquid, applicable working condition range is wider.
4, packer of the invention is provided with fluid reservoir, provides more liquid for the expansion of packer annular container,
So as to which the annular container of packer is designed longer, the outer diameter of annular container can also be expanded bigger.
Detailed description of the invention
When considered in conjunction with the accompanying drawings, by referring to following detailed description, the present invention can be more completely and better understood with
And be easy to learn many adjoint advantages, but the drawings described herein are used to provide a further understanding of the present invention,
A part of the invention is constituted, the illustrative embodiments of the present invention and their descriptions are used to explain the present invention, does not constitute to this hair
Bright improper restriction, in which:
Fig. 1 is the structural schematic diagram of underground metal packer structure type one.
Fig. 2 is the structural schematic diagram of underground metal packer structure type two.
Fig. 3 is the sectional view in Fig. 2 at A-A.
Fig. 4 is the structural schematic diagram of underground metal packer, and packer outer wall one end has baffle ring in figure.
Fig. 5 is the structural schematic diagram of underground metal packer, and two end of packer outer wall has baffle ring in figure.
Fig. 6 is the structural schematic diagram of underground metal packer, and packer has fluid reservoir in figure.
Fig. 7 is the structural schematic diagram of underground metal packer, and packer outer wall is attached with the attached layer in soft metal in figure.
Fig. 8 is the cross-section diagram in Fig. 7 at B-B.
Specific embodiment
As shown in Figure 1, underground metal packer of the invention, also has central tube 4, in as other downhole packers
The periphery of heart pipe 4 is set with closed annular container 1, and the annular container has an outer wall 5 and an inner wall 6, described
Outer wall 5 is the malleable metal material of tool, and liquid 2 is filled in annular container 1.Packer of the present invention is only depicted in figure
Major part, do not draw the connection structure at packer central tube both ends.It is liquid that the liquid 2, which refers under room temperature, figure
Shown in liquid 2 be vapor state under high temperature, the outer wall of annular container, which has been expanded, seals casing 3.Outer wall described herein
Refer to inside and outside radially with inner wall, be outer wall in major diameter, is inner wall on path.
Since thick oil thermal extraction underground steam injecting temperature can be more than 300 DEG C, production temperature of recovering the oil also can be more than 200 DEG C, commonly use
The nonmetallic materials such as rubber material can quick aging, seriously affect the sealing life of packer.The present invention is using all-metal
Sealing element, that is, setting metal annular container make ring-type by the interior saturated vapour pressure for filling liquid as pressure source
Container expansion sealing tubing covers annular space.
In order to insulate different pressure working conditions, the liquid 2 is filling of can choose.The most frequently used, most convenient system
Make, network minimal is water, the saturated vapour pressure of water at different temperatures is shown in Table 1, the temperature value rounding processing in table.
At the same temperature, in order to obtain higher sealed pressure, other liquid can also be used, such as ethyl alcohol, at 100 DEG C, water it is full
It is 0.101MPa with vapour pressure, the saturated vapour pressure of ethyl alcohol is 0.223MPa.It can also further select other liquid to fill certainly
Dress, such as alkanes, olefines, benzene class, saturated vapour pressure can pass through the acquisition that calculates or table look-up.
The temperature and saturated vapour pressure mapping table of 1 water of table
In order to be easy to expand, also simultaneously for the ease of making outer wall 5 be preferably bonded 3 inner wall of casing, the outer wall 5 is used
Metal material to be preferably selected ductility strong, such as stainless steel, mild steel, medium carbon steel, steel alloy, red copper, aluminium, aluminium alloy, white
Mouth iron etc..
As shown in Fig. 2 and Fig. 3, the central tube 4 and outer wall 5 together constitute annular container, the outer surface of central tube 4
Constitute the inner wall 6 of annular container 1.For the ease of producing closed container, the connection between outer wall 5 and central tube 4 is usual
Use welding method.
As shown in Fig. 4 and Fig. 5, in order to improve the sealability of packer of the present invention, prevent outer wall 5 under High Pressure Difference from damaging,
One end or two ends of the outer wall 5 are equipped with baffle ring 7, and 7 sets of baffle ring on 4 periphery of central tube；Baffle ring 7, central tube 4 and outer wall 5
Together constitute annular container 1.Similarly, for the ease of producing closed container, between baffle ring 7, central tube 4 and outer wall 5
Connection generally also use welding method.
Since space is small in down-hole casing, it is small to be formed by annular volume between central tube and outer wall, only in its annular space
Filling liquid may be not enough to reach saturated vapour pressure, need supplement fluid supply.To solve this problem, it is set on packer
A fluid reservoir 8 is set, as shown in Figure 6, fluid reservoir 8 is set in one end of the annular container 1 or two ends, baffle ring 7 is equipped with
Channel 9, fluid reservoir 8 are connected to by channel 9 with the inner cavity of annular container 1.
For the ease of outer wall expansion, outer wall 5 can be processed into a watt prismatic, or be corrugated, shown in Fig. 8 watt of prismatic or
Corrugated is cross section, and shape extends vertically.
As shown in Figure 7, the outer surface of the outer wall 5 is attached with the attached layer 10 in soft metal.The attached layer material in the soft metal
It is the metals such as lead, metal, aluminium, aluminium alloy or red copper.The attached layer in soft metal can be processed outside by modes such as plating, chemical platings
The outer surface of wall 5.The purpose that this attached layer is arranged is to be conducive to outer wall to be preferably bonded internal surface of sleeve pipe, is suitable for down-hole casing
The possible coarse operating condition of inner wall, improves sealing performance.
It is the state of outer wall expansion shown in FIG. 1 to FIG. 6, the liquid in packer produces vaporization.Shown in Fig. 7 and Fig. 8
State be outer wall be the state that do not expand, packer annular container and the indoor liquid of liquid storage vaporize not yet at this time.
As preferred embodiment, the manufacturing method of underground metal packer of the present invention shown in Fig. 7, step includes:
A. a watt prismatic is made using folder in metal outer wall 5；
B. soft metal is plated in 5 outer surface of outer wall；
C. 5 both ends of outer wall and baffle ring 7, fluid reservoir 8 are integrally welded, then cover on 4 periphery of central tube；
D. baffle ring 7 or the welding of fluid reservoir 8 and central tube 4 form closed container；
E. injection technology hole is opened up on baffle ring 7 or fluid reservoir 8, liquid is injected into annular container 1, then closing injection
Fabrication hole.
The closing mode in injection technology hole needs to do appropriate selection according to the difference of injection liquid, if liquid is water, then may be used
It is closed with welding method.If the liquid of injection is ethyl alcohol, then can first be closed with the metal blind plugging with sealing screw thread, then be aided with welding
Closing.
The application method of underground metal packer of the invention is that the underground gold is connected in the steam injection string of underground
Belong to packer.Its step includes:
A. underground metal packer is connected on steam injection string designated position under simultaneously lower going-into-well；
B. high-temperature vapor is injected by steam injection string；
C. according to the temperature at the metal packer of underground, pass through liquid in the packer obtained under relevant temperature that calculates or table look-up
The saturated vapour pressure of body determines the pressure in the annular container 1 of underground metal packer；
D. operting differential pressure is applied to underground metal packer with the pressure for being less than pressure value in annular container 1.
In oil field operation process procedure, job design book is had first, has downhole packer in job design book
Fitting depth, the underground designated position, just refers to the fitting depth of the downhole packer in job design book.
The saturated vapour pressure of liquid can be obtained by calculating, and such as use Antoine formula, can also be related by inquiry
Chart obtains.Formula or chart can be searched from pertinent literature.
Obviously, those skilled in the art belong to guarantor of the invention based on many modifications and variations that spirit of the invention is done
Protect range.
Claims (9)
1. a kind of underground metal packer, including central tube (4), which is characterized in that be set with closing in the periphery of central tube (4)
Annular container (1), the annular container has an outer wall (5) and an inner wall (6), and the outer wall (5) is that have to prolong
The metal material of malleability is filled with liquid (2) in annular container (1).
2. underground metal packer according to claim 1, which is characterized in that the central tube (4) and outer wall (5) is altogether
With constituting annular container (1), the outer surface of central tube (4) constitutes the inner wall (6) of annular container (1).
3. underground metal packer according to claim 2, which is characterized in that one end or two ends of the outer wall (5)
Equipped with baffle ring (7), baffle ring (7) covers on central tube (4) periphery；Baffle ring (7), central tube (4) and outer wall (5) together constitute ring
Shape container (1).
4. underground metal packer according to claim 3, which is characterized in that one end of the annular container (1) or
Two ends are equipped with fluid reservoir (8), and baffle ring (7) is equipped with channel (9), and fluid reservoir (8) is interior by channel (9) and annular container (1)
Chamber connection.
5. underground metal packer according to claim 3 or 4, which is characterized in that the outer wall (5) is in watt prismatic.
6. underground metal packer according to claim 5, which is characterized in that the outer surface of the outer wall (5) is adhered to
There is the attached layer in soft metal (10).
7. underground metal packer according to claim 6, which is characterized in that the attached layer material in the soft metal be lead,
Metal, aluminium, aluminium alloy or red copper.
8. underground metal packer according to claim 5, which is characterized in that the liquid (2) is water or ethyl alcohol.
9. underground metal packer according to claim 5, which is characterized in that the metal material is stainless steel, carbon
Steel, red copper, aluminum or aluminum alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821724001.0U CN209212203U (en) | 2018-10-24 | 2018-10-24 | Underground metal packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821724001.0U CN209212203U (en) | 2018-10-24 | 2018-10-24 | Underground metal packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209212203U true CN209212203U (en) | 2019-08-06 |
Family
ID=67456685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821724001.0U Withdrawn - After Issue CN209212203U (en) | 2018-10-24 | 2018-10-24 | Underground metal packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209212203U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109162664A (en) * | 2018-10-24 | 2019-01-08 | 中国石油化工股份有限公司 | Underground metal packer and production and preparation method thereof |
-
2018
- 2018-10-24 CN CN201821724001.0U patent/CN209212203U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109162664A (en) * | 2018-10-24 | 2019-01-08 | 中国石油化工股份有限公司 | Underground metal packer and production and preparation method thereof |
| CN109162664B (en) * | 2018-10-24 | 2023-10-20 | 中国石油化工股份有限公司 | Downhole metal packer and methods of making and using the same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190806 Effective date of abandoning: 20231020 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20190806 Effective date of abandoning: 20231020 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |