CN105804687A - Vibration-resistant and anti-crawling compression packer - Google Patents
Vibration-resistant and anti-crawling compression packer Download PDFInfo
- Publication number
- CN105804687A CN105804687A CN201610323025.4A CN201610323025A CN105804687A CN 105804687 A CN105804687 A CN 105804687A CN 201610323025 A CN201610323025 A CN 201610323025A CN 105804687 A CN105804687 A CN 105804687A
- Authority
- CN
- China
- Prior art keywords
- packing element
- fluid cylinder
- annular space
- central canal
- shaking
- 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.)
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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
- E21B33/1208—Packers; Plugs characterised by the construction of the sealing or packing means
-
- 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
- E21B33/126—Packers; Plugs with fluid-pressure-operated elastic cup or skirt
- E21B33/1265—Packers; Plugs with fluid-pressure-operated elastic cup or skirt with mechanical slips
Abstract
The invention discloses a vibration-resistant and anti-crawling compression packer. The vibration-resistant and anti-crawling compression packer comprises a center pipe, a rubber cylinder sleeve, a rubber cylinder combination, a hydraulic cylinder mechanism and a buffer structure, wherein the outer side of the center pipe is provided with the rubber cylinder sleeve in a sleeving way and is fastened by an anti-loosing nail; the rubber cylinder combination and the hydraulic cylinder mechanism are arranged at the outer side of the rubber cylinder sleeve and are fastened by an unlocking nail; the buffer structure is arranged in an annular space between the rubber cylinder sleeve and the center pipe or arranged at the axial end part of the rubber cylinder combination, and radial holes which are communicated with each other are formed in the rubber cylinder sleeve and the center pipe and are simultaneously communicated with an inner cavity of a hydraulic cylinder. According to the vibration-resistant and anti-crawling compression packer disclosed by the invention, the problems existing in the prior art that the vibration is difficult to resist and the large pipe column axial deformation is difficult to be offset are solved.
Description
Technical field
The present invention relates to down-hole plugging instrument, specifically a kind of resistance to anti-creep compression packer of shaking.
Background technology
Waterflooding oil field enters development late stage, and interlayer difference aggravates, in order to improve development effectiveness, it is necessary to strengthen fine seperated layer water injection further.The hydraulic compression formula packer lifting up deblocking that current separated-zone water infection oil field tubing string is conventional, such packer application there will be water injection string in the well that water injection pressure fluctuation is big and water filling interlayer pressure difference is big and wriggles up and down the problem with the automatic deblocking of packer, the layered effect of layering note tubing string can be reduced, have impact on water filling layering qualification rate, reducing tubing string and kit in the well life-span, adding the later stage resumes operation workload.In addition current many oil fields also develop the instrument of various anti-creep class life-saving, but it is all feasible when small deformation, when running into big pressure reduction, during high-temperature situation, tubing string is in High Temperature High Pressure situation, when particularly meeting with oil-water well operation measure around and produce alternating pressure in individual well exploitation, the tubing string deflection of several kms is no longer appropriate for selecting the downhole tool compensating creep to solve.
Have higher requirement to water injection technological string under the operating modes such as fine layering, long-life, deep-well, High Temperature High Pressure, water injection string structure should be simplified, improve in well tool reliability, also to improve tubing string stress, optimize tubing string working environment, therefore devise resistance to anti-creep compression packer of shaking.
Summary of the invention
It is an object of the invention to provide a kind of resistance to anti-creep compression packer of shaking, solve the opposing that is difficult to existed in prior art and vibrate, the problem offsetting big tubing string axial deformation.
In order to reach above-mentioned purpose, present invention employs following technical scheme, a kind of resistance to anti-creep compression packer of shaking, including central canal, packing element set, packing element combines, fluid cylinder mechanism, outside described central canal, sheathed packing element overlaps and clenches admittedly with locking, the combination of described packing element and fluid cylinder mechanism are arranged on packing element set outside and clench with deblocking solid, also include buffer gear, described buffer gear is installed in the annular space between packing element set and central canal, or it is installed on the axial end portion of packing element combination, described packing element set is offered the radial hole being connected and is communicated to fluid cylinder inner chamber simultaneously with central canal.
Described buffer gear is disc spring combination or rubber air bag or compresses spring.
Described packing element set middle part inwall is provided with step, annular space between packing element set and central canal is separated into annular space epicoele and annular space cavity of resorption, described annular space is respectively provided with buffer gear in intracavity and annular space cavity of resorption, on described annular space, intracavity is also equipped with injection ring, offers, for connecting packing element set, the radial hole being connected with central canal.
Buffer gear in described annular space epicoele topmost withstands on the stop bit platform that central canal outer wall is offered, buffer gear lower end in described annular space cavity of resorption withstands on stop bit cylinder, stop bit cylinder lower end is seated on tapered sleeve, connects fixing by shear pin and safety collar between tapered sleeve and central canal.
Buffer gear one end of the described axial end portion being installed on packing element combination withstands on packing element combination end, and the other end withstands on tapered sleeve, connects fixing by shear pin and safety collar between tapered sleeve and central canal.
Described fluid cylinder mechanism is positioned at the either above or below of packing element combination.
The fluid cylinder mechanism of the described top being positioned at packing element combination includes fluid cylinder, piston, sawtooth set, saw-tooth ring, described fluid cylinder is connected with packing element external threading, clench admittedly with locking, and seal with sealing ring, described piston is arranged between fluid cylinder and packing element set in annular space, described sawtooth overlaps and threadeds on the downside of fluid cylinder and clench admittedly with locking, and described saw-tooth ring is arranged on fluid cylinder lower end and between sawtooth set and piston in annular space.
The fluid cylinder mechanism of the described lower section being positioned at packing element combination includes fluid cylinder, piston, sawtooth set, saw-tooth ring, described fluid cylinder is connected with packing element external threading, clench admittedly with locking, and seal with sealing ring, described piston is arranged between fluid cylinder and packing element set in annular space, described sawtooth overlaps and threadeds on the downside of fluid cylinder and clench admittedly with locking, and described saw-tooth ring is arranged on fluid cylinder lower end and between sawtooth set and piston in annular space；The upper vertebral body of the threaded slip mechanism of described piston.
Described stop bit cylinder lower end external diameter overlaps the external diameter of lower end less than packing element, and described tapered sleeve external diameter is not more than stop bit cylinder lower end external diameter, and described central canal lower end connects lower contact, installs baffle ring outside lower contact, and described baffle ring external diameter is identical with slip mechanism external diameter.
Compared to prior art, the method have the advantages that
(1) add the buffer gear of packing element and pipe string of oil-water well, improve packer working environment, solve packer because of what tubing string vibration caused and set unreliable problem, ensure the stability of the effective sealing state of annular space packing element.
(2) operating mode that buffering tubing string stress is impacted, improves other downhole tool working environments, ensures its function and performance, extends in the well life-span.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of resistance to anti-creep compression packer of shaking；
Fig. 2, Fig. 3, Fig. 4 are the structure chart of other three kinds of embodiments.
In figure: central canal 1, sealing ring 2, packing element set 3, fluid cylinder 4, piston 5, sawtooth set 6, the packing element seat of honour 7, packing element 8,10, spacer ring 9, seat 11 under packing element, stop bit cylinder 12, safety collar 13, tapered sleeve 14, baffle ring 15, lower contact 16, disc spring combination 17,19,20, injection ring 18, saw-tooth ring 21, slip mechanism 22, spring base cylinder 23, spring 24.
Detailed description of the invention
Detailed description for the present invention and technology contents, coordinate accompanying drawing to illustrate as follows, but accompanying drawing only provides reference and purposes of discussion, is not used for the present invention is any limitation as.
nullAccording to Fig. 1，A kind of resistance to anti-creep compression packer of shaking，Described packing element set 3 is enclosed within outside central canal 1，And seal with sealing ring 2，Between described packing element set 3 and central canal 1, upper annulus is sequentially installed with disc spring combination 17 from top to bottom、Injection ring 18、Middle disc spring combination 19，Bottom annular space is provided with lower disc spring combination 20 and stop bit cylinder 12，Described fluid cylinder 4 overlaps 3 with packing element threadeds，Fasten with locking nail 401，And seal with sealing ring 301，Described piston 5 is arranged between fluid cylinder 4 and packing element set 3 in annular space，Respectively with sealing ring 501、502 seal，Described sawtooth set 6 with threaded on the downside of fluid cylinder 4 and fasten with locking nail 601，Described saw-tooth ring 21 is arranged on fluid cylinder 4 lower end，Between sawtooth set 6 and piston 5 in annular space，The described packing element seat of honour 7 is positioned at piston 5 lower end，And it is spacing by setting shear pin 701 between sawtooth set 6，Under described packing element, seat 11 is arranged on the downside of packing element set 3，And follow closely 1101 fastenings with deblocking，Described packing element 8、10 are arranged under the packing element seat of honour 7 and packing element between seat 11 on packing element set 3，Packing element 8、Separate with spacer ring 9 between 10，Described safety collar 13 is arranged on stop bit cylinder 12 lower end，It is inserted in the groove outside central canal 1，Described tapered sleeve 14 is positioned at stop bit cylinder 12 times，And fastened by shear pin 1401 between central canal 1，Described lower contact 16 is threadeded with central canal 1，Described baffle ring 15 is connected with lower contact 16 outside screw，Fasten with locking nail 1501.
Being provided with step outside described central canal 1 upper end, on the downside of step surface, to overlap 3 upper surfaces close for present situation and packing element.
In described central canal 1, upper external cylindrical surface is provided with the groove installing sealing ring 2.
In described central canal 1, upper external cylindrical surface sets step, and step radial depth is supporting with disc spring 17 size.
Described central canal 1 middle and upper part is provided with liquid injection hole 101, and lower end external cylindrical surface is provided with the narrow groove disposing safety collar 13 and installs the wide groove of shear pin 1401.
Described injection ring 18 is cylinder ring, is provided with radially liquid injection hole 1801 in the middle part of the face of cylinder, outside.
Described packing element overlaps 3 upper ends and is set to the conical surface, coordinates with central canal 1 upper end step downside.
Described packing element overlaps 3 middle and upper parts and is provided with two-layer stepped cylindrical face, is provided with liquid injection hole 302 in the middle part of the face of cylinder of topping bar, and the face of cylinder of getting out of a predicament or an embarrassing situation coordinates with in piston 5.
Described packing element overlaps 3 middle inside and is provided with cylinder step 303, middle disc spring combines 19 and separates with lower disc spring combination 20.
Described saw-tooth ring 21 is split ring, is enclosed within the unidirectional serrated face of piston 5 external cylindrical surface.
Described stop bit cylinder 12 is provided with step surface 1201, and what limit packing element set 3 moves down distance.
Described baffle ring 15 external diameter is more than central canal 1 external diameter, less than tapered sleeve 14 maximum outside diameter.
According to Fig. 2, described upper disc spring combination 17, middle disc spring combination 19, lower disc spring combination 20 also can with cylinder bullet, 1701, middle cylindrical spring 1901, lower cylindrical spring 2001 substitute.
nullAccording to Fig. 3，For reaching above-mentioned purpose，The another kind of scheme of the present invention，On the basis of such scheme，Remove upper disc spring combination 17、Middle disc spring combination 19、Lower disc spring combination 20、Injection ring 18 and stop bit cylinder 12，Overlap at packing element and between 3 and tapered sleeve 14, increase spring 24 and spring safety cylinder 23，Described spring safety cylinder 23 is enclosed within outside central canal 1，It is positioned at deblocking and cuts ring 13 upper end，Length is less than spring 24 installation length，Diameter overlaps 3 lower end external diameters more than packing element，Less than spring 24 path，Described spring 24 is enclosed within outside spring safety cylinder 23，It is provided with seal groove outside described central canal 1 middle and lower part，Bottom annular space between sealing ring 1202 center seal pipe and packing element set 3 is installed，Described packing element overlaps 3 upper inner and is provided with seal groove，Upper annulus between sealing ring 2 center seal pipe 1 and packing element set 3 is installed.
According to Fig. 4, for reaching above-mentioned purpose, the third scheme of the present invention, on the basis of the first scheme, by packing element 8 and 10, spacer ring 9 is transferred to packing element and overlaps 3 upper outer, piston 5, fluid cylinder 4, sawtooth set 6, saw-tooth ring 21 is still at liquid injection hole 302 correspondence position, stop bit cylinder 12, safety collar 13, tapered sleeve 14 is arranged on central canal 1 middle and lower part, baffle ring 15 is threadeded with central canal 1 middle and lower part, and fasten with locking nail 1501, the upper vertebral body of the threaded slip mechanism in described piston 5 lower end 22, described stop bit cylinder 12 lower end external diameter overlaps the external diameter of 3 lower ends less than packing element, described tapered sleeve 14 external diameter is not more than stop bit cylinder 12 lower end external diameter, described baffle ring 15 external diameter is identical with slip mechanism 22 external diameter.
In field conduct, according to Fig. 1, hydraulic pressure is beaten in central canal 1, liquid flows through liquid injection hole 101,1801,302 and enters annular space between packing element set 3 and fluid cylinder 4, driving piston 5 to move down, force shear pin 701 to be cut off, piston 5 continues to move down the promotion packing element seat of honour 7 and moves down, packing element 8 and 10 stress expands outwardly, and insulates oil pipe and casing annulus.When oil pipe stretches under external force up or down, owing to disc spring combines cushioning effect and stop bit cylinder 12 position-limiting action of 17,19,20, packing element 8 and 9 is not affected by big impulsive force, ensures that annular space reliably seals.During deblocking, continuing to beat hydraulic pressure, force deblocking shear pin 1101 to be cut off in central canal 1, packing element 8 and 9 shrinks under self-recovery power, completes deblocking, it is possible to carry out deblocking by upper lower center tube 1.
According to Fig. 4, central canal 1 is interior beats hydraulic pressure, fluid cylinder 4 moves and forces packing element 8 and 9 to set, and piston 5 moves down promotion cone makes slip mechanism 22 realize sitting card motion, passes through to lift up central canal 1 and realize unfreezing and deblocking during deblocking.
The foregoing is only presently preferred embodiments of the present invention, be not used to limit the scope of the claims of the present invention, other use the equivalent of patent spirit of the present invention to change, and all should all belong to the scope of the claims of the present invention.
Claims (9)
1. a resistance to anti-creep compression packer of shaking, including central canal, packing element set, packing element combination, fluid cylinder mechanism, outside described central canal, sheathed packing element overlaps and clenches admittedly with locking, the combination of described packing element and fluid cylinder mechanism are arranged on packing element set outside and clench with deblocking solid, it is characterized in that, also include buffer gear, described buffer gear is installed in the annular space between packing element set and central canal, or being installed on the axial end portion of packing element combination, described packing element set is offered the radial hole being connected and is communicated to fluid cylinder inner chamber with central canal simultaneously.
2. the resistance to anti-creep compression packer of shaking of one according to claim 1, it is characterised in that described buffer gear is disc spring combination or rubber air bag or compresses spring.
3. the resistance to anti-creep compression packer of shaking of one according to claim 2, it is characterized in that, described packing element set middle part inwall is provided with step, annular space between packing element set and central canal is separated into annular space epicoele and annular space cavity of resorption, described annular space is respectively provided with buffer gear in intracavity and annular space cavity of resorption, on described annular space, intracavity is also equipped with injection ring, offers, for connecting packing element set, the radial hole being connected with central canal.
4. the resistance to anti-creep compression packer of shaking of one according to claim 3, it is characterized in that, buffer gear in described annular space epicoele topmost withstands on the stop bit platform that central canal outer wall is offered, buffer gear lower end in described annular space cavity of resorption withstands on stop bit cylinder, stop bit cylinder lower end is seated on tapered sleeve, connects fixing by shear pin and safety collar between tapered sleeve and central canal.
5. the resistance to anti-creep compression packer of shaking of one according to claim 2, it is characterized in that, buffer gear one end of the described axial end portion being installed on packing element combination withstands on packing element combination end, and the other end withstands on tapered sleeve, connects fixing by shear pin and safety collar between tapered sleeve and central canal.
6. the resistance to anti-creep compression packer of shaking of one according to claim 4, it is characterised in that described fluid cylinder mechanism is positioned at the either above or below of packing element combination.
7. the resistance to anti-creep compression packer of shaking of one according to claim 6, it is characterized in that, the fluid cylinder mechanism of the described top being positioned at packing element combination includes fluid cylinder, piston, sawtooth set, saw-tooth ring, described fluid cylinder is connected with packing element external threading, clench admittedly with locking, and seal with sealing ring, described piston is arranged between fluid cylinder and packing element set in annular space, described sawtooth overlaps and threadeds on the downside of fluid cylinder and clench admittedly with locking, and described saw-tooth ring is arranged on fluid cylinder lower end and between sawtooth set and piston in annular space.
8. the resistance to anti-creep compression packer of shaking of one according to claim 6, it is characterized in that, the fluid cylinder mechanism of the described lower section being positioned at packing element combination includes fluid cylinder, piston, sawtooth set, saw-tooth ring, described fluid cylinder is connected with packing element external threading, clench admittedly with locking, and seal with sealing ring, described piston is arranged between fluid cylinder and packing element set in annular space, described sawtooth overlaps and threadeds on the downside of fluid cylinder and clench admittedly with locking, and described saw-tooth ring is arranged on fluid cylinder lower end and between sawtooth set and piston in annular space；The upper vertebral body of the threaded slip mechanism of described piston.
9. the resistance to anti-creep compression packer of shaking of one according to claim 8, it is characterized in that, described stop bit cylinder lower end external diameter overlaps the external diameter of lower end less than packing element, described tapered sleeve external diameter is not more than stop bit cylinder lower end external diameter, described central canal lower end connects lower contact, installing baffle ring outside lower contact, described baffle ring external diameter is identical with slip mechanism external diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610323025.4A CN105804687B (en) | 2016-05-13 | 2016-05-13 | A kind of resistance to anti-creep compression packer of shaking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610323025.4A CN105804687B (en) | 2016-05-13 | 2016-05-13 | A kind of resistance to anti-creep compression packer of shaking |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105804687A true CN105804687A (en) | 2016-07-27 |
| CN105804687B CN105804687B (en) | 2017-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610323025.4A Active CN105804687B (en) | 2016-05-13 | 2016-05-13 | A kind of resistance to anti-creep compression packer of shaking |
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| CN (1) | CN105804687B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107605424A (en) * | 2017-10-19 | 2018-01-19 | 中国海洋石油总公司 | From compression high temperature downhole packer |
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|---|---|---|---|---|
| CN2581685Y (en) * | 2002-10-31 | 2003-10-22 | 大庆油田有限责任公司 | Well packer capable of flushing well |
| CN2693944Y (en) * | 2003-11-28 | 2005-04-20 | 大港油田集团有限责任公司 | Hydraulic cup packer |
| US20060102339A1 (en) * | 2004-11-12 | 2006-05-18 | Isolation Equipment Services Inc. | Packoff Nipple |
| CN101713281A (en) * | 2008-10-07 | 2010-05-26 | 刘景斌 | self-expansion bonding packer |
| CN203347738U (en) * | 2013-06-04 | 2013-12-18 | 克拉玛依市红都有限责任公司 | Anti-blocking large channel backwashing packer |
| CN104790903A (en) * | 2015-03-18 | 2015-07-22 | 北京众博达石油科技有限公司 | Spanning type packer capable of achieving repeated setting |
| CN204804754U (en) * | 2015-06-08 | 2015-11-25 | 中国石油天然气股份有限公司 | Eccentric seperated layer water injection packer |
| CN105464614A (en) * | 2015-12-16 | 2016-04-06 | 天津市滨海新区龙新石油机械制造有限公司 | Progressive releasing packer capable of flushing wells |
-
2016
- 2016-05-13 CN CN201610323025.4A patent/CN105804687B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2581685Y (en) * | 2002-10-31 | 2003-10-22 | 大庆油田有限责任公司 | Well packer capable of flushing well |
| CN2693944Y (en) * | 2003-11-28 | 2005-04-20 | 大港油田集团有限责任公司 | Hydraulic cup packer |
| US20060102339A1 (en) * | 2004-11-12 | 2006-05-18 | Isolation Equipment Services Inc. | Packoff Nipple |
| CN101713281A (en) * | 2008-10-07 | 2010-05-26 | 刘景斌 | self-expansion bonding packer |
| CN203347738U (en) * | 2013-06-04 | 2013-12-18 | 克拉玛依市红都有限责任公司 | Anti-blocking large channel backwashing packer |
| CN104790903A (en) * | 2015-03-18 | 2015-07-22 | 北京众博达石油科技有限公司 | Spanning type packer capable of achieving repeated setting |
| CN204804754U (en) * | 2015-06-08 | 2015-11-25 | 中国石油天然气股份有限公司 | Eccentric seperated layer water injection packer |
| CN105464614A (en) * | 2015-12-16 | 2016-04-06 | 天津市滨海新区龙新石油机械制造有限公司 | Progressive releasing packer capable of flushing wells |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107605424A (en) * | 2017-10-19 | 2018-01-19 | 中国海洋石油总公司 | From compression high temperature downhole packer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105804687B (en) | 2017-09-22 |
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