CN103643917A - Inward pushing type packer - Google Patents
Inward pushing type packer Download PDFInfo
- Publication number
- CN103643917A CN103643917A CN201310663811.5A CN201310663811A CN103643917A CN 103643917 A CN103643917 A CN 103643917A CN 201310663811 A CN201310663811 A CN 201310663811A CN 103643917 A CN103643917 A CN 103643917A
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- ring
- central axis
- urceolus
- top connection
- sealing
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Abstract
The invention relates to the technical field of packers, in particular to an inward pushing type packer which comprises a center shaft, an outer tube, a seal upper connector, a piston, a shear pin, a rubber tube, a push ring and a fixed connector. The center shaft and the outer tube are fixedly installed at the inner end of the lower portion of the seal upper connector and the outer end of the lower portion of the seal upper connector respectively. An annular pressing cavity is formed by the center shaft, the outer tube and the bottom of the seal upper connector, wherein the annular pressing cavity is open downwards. A flow guiding hole is formed in the upper portion of the center shaft and can make the inside of the center shaft be communicated with the annular pressing cavity. A piston is installed in the annular pressing cavity below the flow guiding hole, and the lower portion of the piston and the outer tube are installed together through the shear pin. The inward pushing type packer is reasonable and compact in structure and convenient to use. The piston in the annular pressing cavity is pushed to move downwards through high-pressure fluid, so that the rubber tube is subjected to pushing force to be expanded in the radial direction and then achieves setting; in the whole process of setting, the outer tube is fixed, the piston does not make contact with a tubular column, so that setting in advance is effectively prevented from happening, setting is reliable, and safety is high.
Description
Technical field
the present invention relates to packer technology field, is a kind of interior pushing-type packer.
Background technology
the exceptional wells such as Multilateral Wells mixed, adopt and minute adopt, control in the construction operation processes such as water blocking water, reservoir reconstruction, often need to adopt packer to carry out staged fracturing to horizontal well or Multilateral Wells master, branch well hole different reservoir; And conventional packer is sprained after pressure in pitching, shear pin is cut off, and urceolus axle moves down, piston stroking upward, and oil recovery passage is opened; In this process, urceolus easily blocks and causes shifting to an earlier date packing with the borehole wall, and poor reliability, exists certain potential safety hazard.
Summary of the invention
the invention provides a kind of interior pushing-type packer, overcome the deficiency of above-mentioned prior art, when it can effectively solve conventional packer setting, urceolus easily blocks and causes shifting to an earlier date packing with the borehole wall, and poor reliability exists the problem of potential safety hazard.
technical scheme of the present invention realizes by following measures: a kind of interior pushing-type packer, comprises central axis, urceolus, sealing top connection, piston, shear pin, packing element, throw-out collar and anchor tip; The inner, bottom and outer end, bottom in sealing top connection are installed with respectively central axis and urceolus, form the ring that Open Side Down and press chamber between the bottom of central axis, urceolus and sealing top connection; On the top of central axis, have and can make the inner pod apertures of pressing chamber to communicate with ring of central axis; Ring below pod apertures is pressed in chamber piston is installed, and bottom and the urceolus of piston are installed together by shear pin; Bottom at central axis is provided with packing element, and the outside, upper end of packing element is provided with throw-out collar, and the lower end of piston withstands on throw-out collar; The outside, lower end of packing element is provided with anchor tip, and the lower end of anchor tip is fixedly mounted on central axis.
the further optimization and/or improvements to foregoing invention technical scheme below:
above-mentioned stopping device can comprise retaining ring; On the central axis outer ring surface corresponding with piston bottom, have mounting groove, retaining ring is fixedly mounted in mounting groove; In the outside of retaining ring, be provided with outer retaining ratchet under oblique; In the inner lower of piston, be provided with successively up and down the ratchet draw-in groove of at least three energy and retaining ratchet engagement.
on the central axis of above-mentioned pod apertures top, can have outer groove, in outer groove, being provided with can be by two of urceolus axial limiting semicircular spacing semi-ring I, and the ring that is positioned at of spacing semi-ring I is pressed chamber; On the urceolus of two semicircular spacing semi-ring I upper ends, have urceolus Nei Katai, urceolus is by blocking pedestal in two semicircular spacing semi-ring I in urceolus.
interior ring breach can be arranged at the top of above-mentioned anchor tip, forms the packing element mounting groove of opening upwards between interior ring breach and central axis, and the lower end of packing element is fixedly mounted in packing element mounting groove; External screw thread is arranged at the bottom at anchor tip, and the bottom of anchor tip is installed with lower contact by screw thread; In lower contact bottom, there is interior ring platform, in interior ring platform inner top side, have the interior ring platform breach of annular, on the central axis corresponding with interior ring platform breach, have installation annular groove, in annular groove and interior ring platform breach are installed, two spacing semi-ring II that are semicircle shape are installed; The base part seat of anchor tip is in two spacing semi-ring II that are semicircle shape.
can there be external screw thread the upper end of above-mentioned central axis, and sealing top connection is fixedly installed togather by screw thread and central axis, and the lower seal of sealing top connection is arranged on ring and presses in chamber; On the sealing top connection outer ring surface of urceolus upper end, have top connection wild card platform, the upper end of urceolus withstands on the lower surface of top connection wild card platform.
between the bottom of above-mentioned sealing top connection and urceolus, can be installed with sealing ring; Between internal piston upper end and central axis, be installed with sealing ring; Between piston outer upper ends and urceolus, be installed with sealing ring; Inner side, middle part at packing element is installed with support ring, and support ring is sleeved on central axis; Between support ring and central axis, be installed with sealing ring.
reasonable and compact in structure of the present invention, easy to use; By high-pressure fluid, promote ring and press the piston in chamber to move down, make packing element be subject to thrust and radially strut to realize and set; The whole process that sets, urceolus is fixed, and piston does not contact with tubing string, effectively prevents that the situation of sitting in advance extension from occurring, and sets reliable, safe.
Accompanying drawing explanation
the master that accompanying drawing 1 is most preferred embodiment of the present invention is depending on partly cuing open structural representation.
coding in accompanying drawing is respectively: axle centered by 1, and 2 is urceolus, and 3 press chamber for ring, and 4 is sealing top connection, 5 is pod apertures, and 6 is piston, and 7 is shear pin, 8 is packing element, and 9 is throw-out collar, and 10 is anchor tip, 11 is retaining ring, and 12 is spacing semi-ring I, and 13 is lower contact, 14 is interior ring platform, and 15 is spacing semi-ring II, and 16 is top connection wild card platform, 17 is sealing ring, and 18 is support ring, and 19 is urceolus Nei Katai.
The specific embodiment
the present invention is not subject to the restriction of following embodiment, can determine concrete embodiment according to technical scheme of the present invention and actual conditions.
in the present invention, for convenience of description, the description of the relative position relation of each parts is to be all described according to the Butut mode of Figure of description 1, as: the position relationship of upper and lower, left and right etc. is to determine according to the Butut direction of Figure of description 1.
below in conjunction with embodiment and accompanying drawing, the invention will be further described:
as shown in Figure 1, this interior pushing-type packer comprises central axis 1, urceolus 2, sealing top connection 4, piston 6, shear pin 7, packing element 8, throw-out collar 9 and anchor tip 10; The inner, bottom and outer end, bottom in sealing top connection 4 are installed with respectively central axis 1 and urceolus 2, form the ring that Open Side Down and press chamber 3 between the bottom of central axis 1, urceolus 2 and sealing top connection 4; On the top of central axis 1, have and can make the inner pod apertures 5 of pressing chamber 3 to communicate with ring of central axis 1; Ring below pod apertures 5 is pressed in chamber 3 piston 6 is installed, and the bottom of piston 6 and urceolus 2 are installed together by shear pin 7; In the bottom of central axis 1, packing element 8 is installed, the outside, upper end of packing element 8 is provided with throw-out collar 9, and the lower end of piston 6 withstands on throw-out collar 9; The outside, lower end of packing element 8 is provided with anchor tip 10, and the lower end of anchor tip 10 is fixedly mounted on central axis 1.Transfer to after assigned address, to the pressure of spraining of pitching in well, the high-pressure fluid of down-hole enters ring and presses in chamber 3 from pod apertures 5 through central axis 1, the pressure-acting of high-pressure fluid, on piston 6, imposes on the downward thrust of piston 6, when thrust reaches some strength, shear pin 7 is cut off, piston 6 moves down and promotes throw-out collar 9 extruding packing element 8 downwards, and packing element 8 is subject to thrust and struts, and realization sets; In this process, piston 6 moves in ring is pressed chamber 3 and carries out, and is not subject to the impact of pipe string internal wall, effectively prevents from sitting in advance extension, and easy to use, reliability is high; Stopping device acts on piston 6, makes the piston 6 cannot return, sets firm.
can according to actual needs, above-mentioned ball seat type fracturing slide sleeve be made further optimization and/or improvements:
as shown in Figure 1, stopping device comprises retaining ring 11; On central axis 1 outer ring surface corresponding with piston 6 bottoms, have mounting groove, retaining ring 11 is fixedly mounted in mounting groove; In the outside of retaining ring 11, be provided with outer retaining ratchet under oblique; In the inner lower of piston 6, be provided with successively up and down the ratchet draw-in groove of at least three energy and retaining ratchet engagement.According to ratchet mechanism principle, by retaining ratchet and the engagement of ratchet draw-in groove, realize retaining spacing, reliability is high.
as shown in Figure 1, on the central axis 1 of pod apertures 5 tops, have outer groove, in outer groove, being provided with can be by two of urceolus 2 axial limitings semicircular spacing semi-ring I 12, and the ring that is positioned at of spacing semi-ring I 12 is pressed chamber 3; On the urceolus 2 of two semicircular spacing semi-ring I 12 upper ends, have and in urceolus, block platform 19, urceolus 2 by 19 of card platforms in urceolus in two semicircular spacing semi-ring I 12.
as shown in Figure 1, have interior ring breach on the top of anchor tip 10, form the packing element mounting groove of opening upwards between interior ring breach and central axis 1, the lower end of packing element is fixedly mounted in packing element mounting groove; External screw thread is arranged at the bottom at anchor tip 10, and the bottom of anchor tip 10 is installed with lower contact 13 by screw thread; In lower contact 13 bottoms, there is interior ring platform 14, in interior ring platform 14 inner top side, have the interior ring platform breach of annular, on the central axis 1 corresponding with interior ring platform breach, have installation annular groove, in annular groove and interior ring platform breach are installed, two spacing semi-ring II 15 that are semicircle shape are installed; The base part seat of anchor tip 10 is in two spacing semi-ring II 15 that are semicircle shape.
as shown in Figure 1, there is external screw thread the upper end of central axis 1, and sealing top connection 4 is fixedly installed togather by screw thread and central axis 1, and the lower seal of sealing top connection 4 is arranged on ring and presses in chamber 3; On sealing top connection 4 outer ring surfaces of urceolus 2 upper ends, have top connection wild card platform 16, the upper end of urceolus 2 withstands on the lower surface of top connection wild card platform 16.Between central axis 1 and sealing top connection 4, be threaded connection easy accessibility; Top connection wild card platform 16 can be convenient to mounting limit between urceolus 2 and central axis 1, easy for installation.
as shown in Figure 1, between the bottom of sealing top connection 4 and urceolus 2, be installed with sealing ring 17; Between piston 6 inner upper end and central axis 1, be installed with sealing ring 17; Between piston 6 outer upper ends and urceolus 2, be installed with sealing ring 17; Inner side, middle part at packing element 8 is installed with support ring 18, and support ring 18 is sleeved on central axis 1; Between support ring 18 and central axis 1, be installed with sealing ring 17.Sealing ring 17 plays the effect that increases sealing between contact surface.
above technical characterictic has formed most preferred embodiment of the present invention, and it has stronger compliance and best implementation result, can increase and decrease according to actual needs non-essential technical characterictic, meets the demand of different situations.
Claims (10)
1. a pushing-type packer in, is characterized in that comprising central axis, urceolus, sealing top connection, piston, shear pin, packing element, throw-out collar and anchor tip; The inner, bottom and outer end, bottom in sealing top connection are installed with respectively central axis and urceolus, form the ring that Open Side Down and press chamber between the bottom of central axis, urceolus and sealing top connection; On the top of central axis, have and can make the inner pod apertures of pressing chamber to communicate with ring of central axis; Ring below pod apertures is pressed in chamber piston is installed, and bottom and the urceolus of piston are installed together by shear pin; Bottom at central axis is provided with packing element, and the outside, upper end of packing element is provided with throw-out collar, and the lower end of piston withstands on throw-out collar; The outside, lower end of packing element is provided with anchor tip, and the lower end of anchor tip is fixedly mounted on central axis.
2. interior pushing-type packer according to claim 1, is characterized in that stopping device comprises retaining ring; On the central axis outer ring surface corresponding with piston bottom, have mounting groove, retaining ring is fixedly mounted in mounting groove; In the outside of retaining ring, be provided with outer retaining ratchet under oblique; In the inner lower of piston, be provided with successively up and down the ratchet draw-in groove of at least three energy and retaining ratchet engagement.
3. interior pushing-type packer according to claim 1 and 2, is characterized in that there is outer groove on the central axis of pod apertures top, and in outer groove, being provided with can be by two of urceolus axial limiting semicircular spacing semi-ring I, and the ring that is positioned at of spacing semi-ring I is pressed chamber; On the urceolus of two semicircular spacing semi-ring I upper ends, have urceolus Nei Katai, urceolus is by blocking pedestal in two semicircular spacing semi-ring I in urceolus.
4. interior pushing-type packer according to claim 1 and 2, is characterized in that interior ring breach is arranged at the top of anchor tip, forms the packing element mounting groove of opening upwards between interior ring breach and central axis, and the lower end of packing element is fixedly mounted in packing element mounting groove; External screw thread is arranged at the bottom at anchor tip, and the bottom of anchor tip is installed with lower contact by screw thread; In lower contact bottom, there is interior ring platform, in interior ring platform inner top side, have the interior ring platform breach of annular, on the central axis corresponding with interior ring platform breach, have installation annular groove, in annular groove and interior ring platform breach are installed, two spacing semi-ring II that are semicircle shape are installed; The base part seat of anchor tip is in two spacing semi-ring II that are semicircle shape.
5. interior pushing-type packer according to claim 3, is characterized in that interior ring breach is arranged at the top of anchor tip, forms the packing element mounting groove of opening upwards between interior ring breach and central axis, and the lower end of packing element is fixedly mounted in packing element mounting groove; External screw thread is arranged at the bottom at anchor tip, and the bottom of anchor tip is installed with lower contact by screw thread; In lower contact bottom, there is interior ring platform, in interior ring platform inner top side, have the interior ring platform breach of annular, on the central axis corresponding with interior ring platform breach, have installation annular groove, in annular groove and interior ring platform breach are installed, two spacing semi-ring II that are semicircle shape are installed; The base part seat of anchor tip is in two spacing semi-ring II that are semicircle shape.
6. interior pushing-type packer according to claim 1 and 2, is characterized in that there is external screw thread the upper end of central axis, and sealing top connection is fixedly installed togather by screw thread and central axis, and the lower seal of sealing top connection is arranged on ring and presses in chamber; On the sealing top connection outer ring surface of urceolus upper end, have top connection wild card platform, the upper end of urceolus withstands on the lower surface of top connection wild card platform.
7. interior pushing-type packer according to claim 3, is characterized in that there is external screw thread the upper end of central axis, and sealing top connection is fixedly installed togather by screw thread and central axis, and the lower seal of sealing top connection is arranged on ring and presses in chamber; On the sealing top connection outer ring surface of urceolus upper end, have top connection wild card platform, the upper end of urceolus withstands on the lower surface of top connection wild card platform.
8. according to the interior pushing-type packer described in claim 4 or 5, it is characterized in that there is external screw thread the upper end of central axis, sealing top connection is fixedly installed togather by screw thread and central axis, and the lower seal of sealing top connection is arranged on ring and presses in chamber; On the sealing top connection outer ring surface of urceolus upper end, have top connection wild card platform, the upper end of urceolus withstands on the lower surface of top connection wild card platform.
9. interior pushing-type packer according to claim 1 and 2, is characterized in that sealing between the bottom of top connection and urceolus and is installed with sealing ring; Between internal piston upper end and central axis, be installed with sealing ring; Between piston outer upper ends and urceolus, be installed with sealing ring; Inner side, middle part at packing element is installed with support ring, and support ring is sleeved on central axis; Between support ring and central axis, be installed with sealing ring.
10. according to the interior pushing-type packer described in claim 3 or 4 or 5 or 6 or 7 or 8, it is characterized in that sealing between the bottom of top connection and urceolus and be installed with sealing ring; Between internal piston upper end and central axis, be installed with sealing ring; Between piston outer upper ends and urceolus, be installed with sealing ring; Inner side, middle part at packing element is installed with support ring, and support ring is sleeved on central axis; Between support ring and central axis, be installed with sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310663811.5A CN103643917A (en) | 2013-12-10 | 2013-12-10 | Inward pushing type packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310663811.5A CN103643917A (en) | 2013-12-10 | 2013-12-10 | Inward pushing type packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103643917A true CN103643917A (en) | 2014-03-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310663811.5A Pending CN103643917A (en) | 2013-12-10 | 2013-12-10 | Inward pushing type packer |
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| CN (1) | CN103643917A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257239A (en) * | 2015-10-26 | 2016-01-20 | 中国石油集团西部钻探工程有限公司 | External casing packer |
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|---|---|---|---|---|
| US3918747A (en) * | 1973-09-27 | 1975-11-11 | Nelson Norman A | Well suspension system |
| RU2235851C1 (en) * | 2003-05-08 | 2004-09-10 | Цыбин Сергей Анатольевич | Device for well beds separation and isolation |
| CN101864922A (en) * | 2010-07-02 | 2010-10-20 | 中国石油集团川庆钻探工程有限公司井下作业公司 | Compression type dual-sealing open hole packer |
| CN102071900A (en) * | 2010-11-23 | 2011-05-25 | 中国石油天然气股份有限公司 | Custom-pressure expandable naked eye packer |
| CN103046893A (en) * | 2012-12-26 | 2013-04-17 | 安东石油技术（集团）有限公司 | Composite rubber sleeve packer |
| CN203626710U (en) * | 2013-12-10 | 2014-06-04 | 中国石油集团西部钻探工程有限公司 | Inwardly-pushing type packer |
-
2013
- 2013-12-10 CN CN201310663811.5A patent/CN103643917A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3918747A (en) * | 1973-09-27 | 1975-11-11 | Nelson Norman A | Well suspension system |
| RU2235851C1 (en) * | 2003-05-08 | 2004-09-10 | Цыбин Сергей Анатольевич | Device for well beds separation and isolation |
| CN101864922A (en) * | 2010-07-02 | 2010-10-20 | 中国石油集团川庆钻探工程有限公司井下作业公司 | Compression type dual-sealing open hole packer |
| CN102071900A (en) * | 2010-11-23 | 2011-05-25 | 中国石油天然气股份有限公司 | Custom-pressure expandable naked eye packer |
| CN103046893A (en) * | 2012-12-26 | 2013-04-17 | 安东石油技术（集团）有限公司 | Composite rubber sleeve packer |
| CN203626710U (en) * | 2013-12-10 | 2014-06-04 | 中国石油集团西部钻探工程有限公司 | Inwardly-pushing type packer |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257239A (en) * | 2015-10-26 | 2016-01-20 | 中国石油集团西部钻探工程有限公司 | External casing packer |
| CN105257239B (en) * | 2015-10-26 | 2018-10-09 | 中国石油集团西部钻探工程有限公司 | External packer of pipe |
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| PB01 | Publication | ||
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Application publication date: 20140319 |