CN107842338A - Expanded graphite thermal expansion packer - Google Patents
Expanded graphite thermal expansion packer Download PDFInfo
- Publication number
- CN107842338A CN107842338A CN201610828506.0A CN201610828506A CN107842338A CN 107842338 A CN107842338 A CN 107842338A CN 201610828506 A CN201610828506 A CN 201610828506A CN 107842338 A CN107842338 A CN 107842338A
- Authority
- CN
- China
- Prior art keywords
- central tube
- expanded graphite
- sealing
- sealing drum
- thermal expansion
- 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.)
- Pending
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/128—Packers; Plugs with a member expanded radially by axial pressure
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/1208—Packers; Plugs characterised by the construction of the sealing or packing means
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Actuator (AREA)
Abstract
The invention discloses expanded graphite thermal expansion packer, including inner central tube, exterior central tube, sealing drum, setting mechanism, solve sealing mechanism, the exterior central tube is enclosed on the outside of inner central tube and fixed by lower closing piece with inner central tube, the sealing sleeve is on the outside of exterior central tube, the setting mechanism is connected to below sealing drum, the solution sealing mechanism is connected to above sealing drum, the setting mechanism includes piston, piston bush, plunger shaft and driving chamber are formed between piston bush and the exterior central tube outer wall, driving chamber is located at below plunger shaft, plunger shaft sets piston, driving chamber fills expanded graphite.The piston upper end covers the lower pressure ring of connection sealing drum lower end by lock ring, and lock ring is set in lock ring set.Support set is also set up between the sealing drum and exterior central tube.The present invention adds a certain amount of expanded graphite in driving chamber, and using the volume thermal expansion compression seal cylinder of expanded graphite, setting force is big, and high pressure seal result is good.
Description
Technical field
The present invention relates to petroleum industry packer, specifically expanded graphite thermal expansion packer.
Background technology
Thermal packer is the key tool for ensureing thermal production well steam injection efficiency and pit shaft safety.By the mode that sets point, thermal recovery
Packer mainly divides three kinds at present：One kind is to promote to set piston, compression seal cylinder by hydraulic pressure under normal temperature；One kind be according to
Heat by injecting steam, makes deforming alloy deformable squeeze sealing drum；Last one kind is to utilize the stored energy mechanisms such as spring, disc spring,
The sealing drum of softening is extruded at high temperature.For the first, due to such as graphite, the polytetrafluoroethylene (PTFE) sealing of energy high temperature high voltage resistant
Material is too hard, and itself is not compressible, so even being also difficult to effectively seal using multistage setting mechanism；And latter two due to
Extruding, compression stress are limited, and sealing effectiveness is also bad.
The content of the invention
It is an object of the invention to provide expanded graphite thermal expansion packer, and a certain amount of expansion stone is added in driving chamber
Ink, using the volume thermal expansion compression seal cylinder of expanded graphite, setting force is big, and high pressure seal result is good.
In order to reach above-mentioned purpose, present invention employs following technical scheme, expanded graphite thermal expansion packer, including it is interior
Central tube, exterior central tube, sealing drum, setting mechanism, solution sealing mechanism, the exterior central tube are enclosed on the outside of inner central tube and under
Closing piece is fixed with inner central tube, and the sealing sleeve is on the outside of exterior central tube, and the setting mechanism is connected to below sealing drum, institute
Solution sealing mechanism is stated to be connected to above sealing drum, the setting mechanism includes piston, piston bush, the piston bush with outside exterior central tube
Plunger shaft and driving chamber are formed between wall, driving chamber is located at below plunger shaft, and plunger shaft sets piston, driving chamber filling expansion stone
Ink.
The piston upper end covers the lower pressure ring of connection sealing drum lower end by lock ring, and lock ring is set in lock ring set.
Support set is also set up between the sealing drum and exterior central tube, i.e., sealing sleeve is on support set outer wall, support set
The upper press ring of sealing drum upper end is blocked at end, and lower pressure ring is then pinned in lower end by lock ring.
The solution sealing mechanism includes top connection, solution big envelope, and deblocking chamber, deblocking are formed between the top connection and exterior central tube
Solution big envelope is set in chamber, and solution big envelope lower end is withstood on the upper press ring of sealing drum upper end.
The solution big envelope is fixed on exterior central tube by upper locking piece, and upper locking piece is temporarily fixed to connect by unsealing shear pin
Head inwall.
The solution big envelope outer wall also sets up chute, and top connection inwall sets iron nail, and iron nail is stretched into chute.
Compared to prior art, the invention has the advantages that：
Expanded graphite is heated, and volumetric expansion is big, and setting force is big, good to the HTHP sealing drum adaptability that is difficult to compress；Profit
Steam heat set packer is injected with thermal production well, it is not necessary to which other to set equipment, both cost-effective, construction is again simple, safety.
Brief description of the drawings
Fig. 1 is the structural representation of expanded graphite thermal expansion packer of the present invention.
In figure：Top connection 1, exterior central tube 2, solution big envelope 3, iron nail 4, deblocking shear pin 5, upper locking piece 6, upper press ring 7, support set
8th, inner central tube 9, sealing drum 10, lower pressure ring 11, lock ring set 12, lower closing piece 13, piston 14, piston bush 15, expanded graphite 16.
Embodiment
Detailed description for the present invention and technology contents, coordinate brief description of the drawings it is as follows, but accompanying drawing only provide reference with
Purposes of discussion, not it is used for being any limitation as the present invention.
According to Fig. 1, expanded graphite thermal expansion packer, including inner central tube 9, exterior central tube 2, sealing drum 10, set machine
Structure, solution sealing mechanism, the exterior central tube are enclosed on the outside of inner central tube and fixed by lower closing piece 13 with inner central tube, the sealing
On the outside of exterior central tube, the setting mechanism is connected to below sealing drum jacket casing, and the solution sealing mechanism is connected to above sealing drum,
The setting mechanism includes piston 14, piston bush 15, and plunger shaft and driving are formed between piston bush and the exterior central tube outer wall
Chamber, driving chamber are located at below plunger shaft, and plunger shaft sets piston, driving chamber filling expanded graphite 16.The piston upper end passes through
The lower pressure ring 11 of the connection sealing drum lower end of lock ring set 12, lock ring set is interior to set lock ring.Between the sealing drum and exterior central tube also
Support set 8 is set, i.e. sealing sleeve blocks the upper press ring 7 of sealing drum upper end in support set outer wall, support set upper side, and lower end then leads to
Cross lock ring and pin lower pressure ring.The solution sealing mechanism includes top connection 1, solution big envelope 3, iron nail 4, deblocking shear pin 5, closing piece 6 and upper pressure
Ring 7, the top connection above carry, and break deblocking shear pin 5, and closing piece 6 unlocks, and solution big envelope is disengaged exterior central tube and the axial direction of itself is limited
System, solution big envelope 3 is up under the pull-up effect of iron nail 4, drives upper press ring 7 up, unseals sealing drum.
Set：Expanded graphite is in (250 DEG C -350 DEG C) effect volumetric expansions of injection steam heat of high temperature, promotion piston
14th, lock ring set 12 and lock ring, lower pressure ring 11, support set 8 etc. are up, compression seal cylinder 10, make sealing drum spreading and seal.
Deblocking：Carried in top connection, break deblocking shear pin, closing piece unblock, deblocking be enclosed on it is up in the presence of iron nail, in drive
Pressure ring is up, unseals sealing drum.
Presently preferred embodiments of the present invention is the foregoing is only, is not used to limit the scope of the claims of the present invention, other are with this
The equivalence changes of the patent spirit of invention, it all should all belong to the scope of the claims of the present invention.
Claims (6)
1. expanded graphite thermal expansion packer, including inner central tube, exterior central tube, sealing drum, setting mechanism, solution sealing mechanism, its
It is characterised by, the exterior central tube is enclosed on the outside of inner central tube and fixed by lower closing piece with inner central tube, the sealing sleeve
On the outside of exterior central tube, the setting mechanism is connected to below sealing drum, and the solution sealing mechanism is connected to above sealing drum, described
Setting mechanism includes piston, piston bush, and plunger shaft and driving chamber, driving chamber are formed between piston bush and the exterior central tube outer wall
Below plunger shaft, plunger shaft sets piston, driving chamber filling expanded graphite.
2. expanded graphite thermal expansion packer according to claim 1, it is characterised in that the piston upper end passes through lock ring
The lower pressure ring of set connection sealing drum lower end, lock ring set is interior to set lock ring.
3. expanded graphite thermal expansion packer according to claim 2, it is characterised in that the sealing drum and exterior central tube
Between also set up support set, i.e., sealing sleeve blocks the upper press ring of sealing drum upper end, lower end in support set outer wall, support set upper side
Lower pressure ring is then pinned by lock ring.
4. expanded graphite thermal expansion packer according to claim 1, it is characterised in that the solution sealing mechanism includes above connecing
Head, solution big envelope, form deblocking chamber between the top connection and exterior central tube, unseal and solution big envelope is set in chamber, solution big envelope lower end top
On the upper press ring of sealing drum upper end.
5. expanded graphite thermal expansion packer according to claim 4, it is characterised in that the solution big envelope passes through upper locking piece
It is fixed on exterior central tube, upper locking piece is temporarily fixed to top connection inwall by unsealing shear pin.
6. expanded graphite thermal expansion packer according to claim 4, it is characterised in that the solution big envelope outer wall is also set up
Chute, top connection inwall set iron nail, and iron nail is stretched into chute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610828506.0A CN107842338A (en) | 2016-09-18 | 2016-09-18 | Expanded graphite thermal expansion packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610828506.0A CN107842338A (en) | 2016-09-18 | 2016-09-18 | Expanded graphite thermal expansion packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107842338A true CN107842338A (en) | 2018-03-27 |
Family
ID=61656793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610828506.0A Pending CN107842338A (en) | 2016-09-18 | 2016-09-18 | Expanded graphite thermal expansion packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107842338A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111852381A (en) * | 2019-04-28 | 2020-10-30 | 中国石油天然气股份有限公司 | Fire-driving packer |
| CN115354985A (en) * | 2022-06-29 | 2022-11-18 | 中国地质大学（武汉） | Thermal-sensitive casing protection method and device for thermal injection well |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2720106Y (en) * | 2004-08-13 | 2005-08-24 | 阜新市石油工具厂 | Stepped-depacking packer |
| CN201908615U (en) * | 2010-12-16 | 2011-07-27 | 中国石油天然气股份有限公司 | Delaminated steam injecting packer |
| CN202152661U (en) * | 2011-06-23 | 2012-02-29 | 中国石油天然气股份有限公司 | Anchoring type graded deblocking packer for oil well |
| CN204327040U (en) * | 2014-12-02 | 2015-05-13 | 中国海洋石油总公司 | Bicone anchoring type steam injection packer |
-
2016
- 2016-09-18 CN CN201610828506.0A patent/CN107842338A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2720106Y (en) * | 2004-08-13 | 2005-08-24 | 阜新市石油工具厂 | Stepped-depacking packer |
| CN201908615U (en) * | 2010-12-16 | 2011-07-27 | 中国石油天然气股份有限公司 | Delaminated steam injecting packer |
| CN202152661U (en) * | 2011-06-23 | 2012-02-29 | 中国石油天然气股份有限公司 | Anchoring type graded deblocking packer for oil well |
| CN204327040U (en) * | 2014-12-02 | 2015-05-13 | 中国海洋石油总公司 | Bicone anchoring type steam injection packer |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111852381A (en) * | 2019-04-28 | 2020-10-30 | 中国石油天然气股份有限公司 | Fire-driving packer |
| CN111852381B (en) * | 2019-04-28 | 2022-08-05 | 中国石油天然气股份有限公司 | Fire-driving packer |
| CN115354985A (en) * | 2022-06-29 | 2022-11-18 | 中国地质大学（武汉） | Thermal-sensitive casing protection method and device for thermal injection well |
| CN115354985B (en) * | 2022-06-29 | 2023-12-29 | 中国地质大学（武汉） | Thermal injection well thermosensitive casing protection method and device |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180327 |
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| WD01 | Invention patent application deemed withdrawn after publication |