CN104775786B - The two-tube shunting setting device of level pressure - Google Patents
The two-tube shunting setting device of level pressure Download PDFInfo
- Publication number
- CN104775786B CN104775786B CN201410012191.3A CN201410012191A CN104775786B CN 104775786 B CN104775786 B CN 104775786B CN 201410012191 A CN201410012191 A CN 201410012191A CN 104775786 B CN104775786 B CN 104775786B
- Authority
- CN
- China
- Prior art keywords
- tube
- central tube
- sealing plug
- inner tube
- level pressure
- 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.)
- Expired - Fee Related
Links
- 238000007789 sealing Methods 0.000 claims abstract description 44
- 238000012856 packing Methods 0.000 claims abstract description 14
- 230000001052 transient effect Effects 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 15
- 238000002347 injection Methods 0.000 abstract description 11
- 239000007924 injection Substances 0.000 abstract description 11
- 238000005516 engineering process Methods 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 1
- 238000011064 split stream procedure Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
Landscapes
- 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)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses the two-tube shunting setting device of level pressure, including top connection, lower contact, central tube, the central tube upper and lower ends connect top connection and lower contact respectively, also include inner tube sealing plug, adapter sleeve, said inner tube sealing plug is down inserted in central tube from top connection upper shed, and the lower end of inner tube sealing plug is connected on the positioning table that lower contact inwall opens up, said inner tube sealing plug inner chamber forms bet passage；The adapter sleeve is enclosed on the outside of central tube, and adapter sleeve upper and lower side is connected in lower contact, is formed between the adapter sleeve and central tube on annular space and is noted passage, and temporarily stifled switch is set in the upper note passage.Central tube upper end outer wall sets interior sealing ladder type packing, and the interior sealing ladder type packing_seal is between inner tube sealing plug outer wall and central tube.This invention ensures that two-tube water injection packer obtains fully setting, ensured effective shunting in shaft bottom again, at the same meet it is two-tube under normal circumstances between effective sealing.
Description
Technical field
The present invention relates to downhole hardware, especially a kind of two-tube shunting setting device of level pressure.
Background technology
Concentric double pipe water filling can realize effective seperated layer water injection of big pressure difference oil reservoir, and ground allotment, with surveying, tune is simple, matches somebody with somebody
Note the characteristics of accurate, while need not individually carry out test allotment, save substantial amounts of workload.Therefore, two-tube water filling is relatively more suitable
Together in field use at sea.Concentric double pipe water injection technology has met offshore oilfield in terms of security control and controlled safely at present
The requirement of system, at sea oil field has obtained effective implementation to concentric double pipe water injection technology.But it can't make at present with one heart
Two-tube water injection packer plays a part of split stream of injected water again while obtaining fully setting.
The content of the invention
It is an object of the invention to provide the two-tube shunting setting device of level pressure, it ensure that two-tube water injection packer obtains abundant seat
Envelope, has ensured effective shunting in shaft bottom again, at the same meet it is two-tube under normal circumstances between effective sealing.
In order to reach above-mentioned purpose, present invention employs following technical scheme, the two-tube shunting setting device of level pressure, including above connect
Head, lower contact, central tube, the central tube upper and lower ends connect top connection and lower contact respectively, in addition to inner tube sealing plug,
Adapter sleeve, said inner tube sealing plug are down inserted in central tube from top connection upper shed, and the lower end of inner tube sealing plug
It is connected on the positioning table that lower contact inwall opens up, said inner tube sealing plug inner chamber forms bet passage；The adapter sleeve set
On the outside of central tube, and adapter sleeve upper and lower side is connected in lower contact, is formed between the adapter sleeve and central tube
Passage is noted on annular space, temporarily stifled switch is set in the upper note passage.
Central tube upper end outer wall sets interior sealing ladder type packing, and the interior sealing ladder type packing_seal is in the interior seal of tube
Between plug outer wall and central tube.
Annulus access is also formed between the top connection and inner tube sealing plug, the passage is logical by what is opened up in top connection
Hole connects the upper note passage；The adapter sleeve outer wall and the upper note that passage is noted in connection is opened up positioned at temporarily stifled switch lower position
Hole.
The temporarily stifled switch includes the level pressure piston being blocked in note passage, and the level pressure piston is temporary by level pressure shear pin
When be fixed on central tube, outer packing, interior packing are set gradually below the level pressure piston.
The temporarily stifled switch is less than upper note passage other positions in the annular space radial distance of the location of upper note passage
Annular space radial distance.
The upper end of said inner tube sealing plug opens up the screw thread for connecting inner tube, is set between the top connection and central tube
Backing-up screw is equipped with, backing-up screw is also equipped between the lower contact and central tube.
Compared to prior art, the invention has the advantages that：
The two-tube shunting setting device of level pressure of the present invention, it is fully setting that the design ensure that two-tube water injection packer obtains, again
Ensured effective shunting in shaft bottom, at the same meet it is two-tube under normal circumstances between effective sealing.Inner tube sealing plug is adopted
With hollow light tube form, the abrasion during outer packing-type sealing plug is gone into the well is avoided.
Brief description of the drawings
Fig. 1 is the structure chart of the two-tube setting device of shunting level pressure of the present invention.
In figure：Inner tube sealing plug 1, top connection 2, adapter sleeve 3, central tube 4, interior sealing ladder type packing 5, level pressure shear pin 6,
Level pressure piston 7, outer packing 8, interior packing 9, lower contact 10.
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.
As shown in figure 1, the two-tube shunting setting device of level pressure, including top connection 2, lower contact 10, central tube 4, the central tube
Upper and lower ends connect top connection and lower contact, in addition to inner tube sealing plug 1, adapter sleeve 3 respectively, said inner tube sealing plug from
Top connection upper shed is down inserted in central tube, and the lower end of inner tube sealing plug is connected to the positioning that lower contact inwall opens up
On platform, said inner tube sealing plug inner chamber forms bet passage；The adapter sleeve is enclosed on the outside of central tube, and above and below adapter sleeve
End is connected in lower contact, is formed between the adapter sleeve and central tube on annular space and is noted passage, in the upper note passage
Temporarily stifled switch is set.Central tube upper end outer wall sets interior sealing ladder type packing 5, and the interior sealing ladder type packing_seal is in interior
Between seal of tube plug outer wall and central tube.Annulus access is also formed between the top connection and inner tube sealing plug, the passage
The upper note passage is connected by the through hole opened up in top connection；The adapter sleeve outer wall and opened positioned at temporarily stifled switch lower position
If the upper orifice of passage is noted in connection.The upper end of said inner tube sealing plug opens up the screw thread for connecting inner tube, it is described on connect
Backing-up screw is provided between head and central tube, backing-up screw is also equipped between the lower contact and central tube.
The temporarily stifled switch includes the level pressure piston 7 being blocked in note passage, and the level pressure piston passes through level pressure shear pin 6
It is temporarily fixed on central tube, outer packing 8, interior packing 9 is set gradually below the level pressure piston.The temporarily stifled switch is upper
The annular space radial distance for noting the location of passage is less than the annular space radial distance of upper note passage other positions.
In concentric double pipe water injection string, the two-tube shunting setting device of level pressure is connected with outer tube, when under outer tube in place, tripping in
Inner tube, inner tube sealing plug 1 are connected to the bottom of inner tube, when 1 time device setting to two-tube shunting level pressure of inner tube sealing plug,
Just with it is two-tube shunting the setting device of level pressure the 5 fully mated sealing of interior sealing ladder type packing.It is close that inner tube water filling is directly over inner tube
Seal plug 1 and inject lower floor；Inner tube and outer tube annulus water injection through the side opening on the two-tube shunting setting device of level pressure enter adapter sleeve 3 and
The annular section of central tube 4, water injection pressure are applied directly on level pressure piston 7, and the complete setting of annular packer can be achieved, when
After the completion of packer set, continue pressurization and cut level pressure shear pin 6, sealing surface is moved away under level pressure piston 7, opens waterflood path,
Injection water enters upper strata, completes the effect of packer set and shunting.
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 (3)
1. the two-tube shunting setting device of level pressure, including top connection, lower contact, central tube, the central tube upper and lower ends connect respectively
Top connection and lower contact, it is characterised in that also including inner tube sealing plug, adapter sleeve, said inner tube sealing plug is from top connection
Upper shed is down inserted in central tube, and the lower end of inner tube sealing plug is connected on the positioning table that lower contact inwall opens up,
Said inner tube sealing plug inner chamber forms bet passage；The adapter sleeve is enclosed on the outside of central tube, and adapter sleeve upper and lower side point
It is not connected in lower contact, is formed between the adapter sleeve and central tube on annular space and note passage, is set in the upper note passage
Temporarily stifled switch；Annulus access is also formed between the top connection and inner tube sealing plug, the passage is by opening up in top connection
Through hole connects the upper note passage；The adapter sleeve outer wall and opened up positioned at temporarily stifled switch lower position the upper of passage is noted in connection
Orifice；The temporarily stifled switch includes the level pressure piston being blocked in note passage, and the level pressure piston is temporary transient by level pressure shear pin
It is fixed on central tube, outer packing, interior packing is set gradually below the level pressure piston；The temporarily stifled switch is in upper note passage
The annular space radial distance of location is less than the annular space radial distance of upper note passage other positions.
2. the two-tube shunting setting device of level pressure according to claim 1, it is characterised in that central tube upper end outer wall is set
Interior sealing ladder type packing, the interior sealing ladder type packing_seal is between inner tube sealing plug outer wall and central tube.
3. the two-tube shunting setting device of level pressure according to claim 1, it is characterised in that the upper end of said inner tube sealing plug
The screw thread for connecting inner tube is opened up, backing-up screw, the lower contact and center are provided between the top connection and central tube
Backing-up screw is also equipped between pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410012191.3A CN104775786B (en) | 2014-01-11 | 2014-01-11 | The two-tube shunting setting device of level pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410012191.3A CN104775786B (en) | 2014-01-11 | 2014-01-11 | The two-tube shunting setting device of level pressure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104775786A CN104775786A (en) | 2015-07-15 |
| CN104775786B true CN104775786B (en) | 2018-03-23 |
Family
ID=53617510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410012191.3A Expired - Fee Related CN104775786B (en) | 2014-01-11 | 2014-01-11 | The two-tube shunting setting device of level pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104775786B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107842346B (en) * | 2016-09-20 | 2020-07-03 | 中国石油化工股份有限公司 | Sealed working barrel in composite type insertion pipe of oil-water well |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101787865A (en) * | 2010-01-11 | 2010-07-28 | 中国石油化工股份有限公司 | Midway setting-proof permanent packer |
| CN202690023U (en) * | 2012-07-05 | 2013-01-23 | 中国石油化工股份有限公司 | Inside seal type flow divider |
| CN102979481A (en) * | 2012-12-18 | 2013-03-20 | 中国石油天然气股份有限公司 | Anti-blocking constant pressure switch of water injection string |
| CN203248137U (en) * | 2013-05-17 | 2013-10-23 | 中国石油化工股份有限公司 | Double-pipe constant-flow water distribution control device |
-
2014
- 2014-01-11 CN CN201410012191.3A patent/CN104775786B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101787865A (en) * | 2010-01-11 | 2010-07-28 | 中国石油化工股份有限公司 | Midway setting-proof permanent packer |
| CN202690023U (en) * | 2012-07-05 | 2013-01-23 | 中国石油化工股份有限公司 | Inside seal type flow divider |
| CN102979481A (en) * | 2012-12-18 | 2013-03-20 | 中国石油天然气股份有限公司 | Anti-blocking constant pressure switch of water injection string |
| CN203248137U (en) * | 2013-05-17 | 2013-10-23 | 中国石油化工股份有限公司 | Double-pipe constant-flow water distribution control device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104775786A (en) | 2015-07-15 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| 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: 20180323 Termination date: 20210111 |