CN106639964A - High leakproofness shoulder-protrusion resistant compression type packer - Google Patents
High leakproofness shoulder-protrusion resistant compression type packer Download PDFInfo
- Publication number
- CN106639964A CN106639964A CN201710140997.4A CN201710140997A CN106639964A CN 106639964 A CN106639964 A CN 106639964A CN 201710140997 A CN201710140997 A CN 201710140997A CN 106639964 A CN106639964 A CN 106639964A
- Authority
- CN
- China
- Prior art keywords
- packing element
- rubber sleeve
- shoulder
- seals
- packer
- 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
Links
- 230000006835 compression Effects 0.000 title claims abstract description 17
- 238000007906 compression Methods 0.000 title claims abstract description 17
- 238000012856 packing Methods 0.000 claims description 69
- 230000002265 prevention Effects 0.000 claims description 16
- 238000007789 sealing Methods 0.000 claims description 16
- 239000003292 glue Substances 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 4
- 238000011084 recovery Methods 0.000 claims 1
- 238000011161 development Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001012 protector Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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
- E21B33/122—Multiple string packers
Abstract
The invention discloses a high leakproofness shoulder-protrusion resistant compression type packer, and relates to the technical filed of oil-gas field development downhole tools. The high leakproofness shoulder-protrusion resistant compression type packer comprises a central tube, an upper connector and a lower connector, wherein the upper connector and the lower connector are connected to the two ends of the central tube respectively, the outer side of the central tube is provided with a rubber sleeve, a rotary protrusion resistant device is arranged on the rubber sleeve, the packer further comprises a hydraulic pressure component which is used for exerting pressure on the rubber sleeve and making the rubber sleeve be in contact with an oil casing pipe after the rubber sleeve is deformed and convex outwards; the rotary protrusion resistant device comprises a fixed section, a rotary section, and a connecting coil spring, the fixed section is fixed on the rubber sleeve, the rotary section is movably connected with the fixed section through the connecting coil spring; the rotary section attaches to the end face of the rubber sleeve, and the rotary section rotates and attaches to the end face of the rubber sleeve all the time in the process from the rubber sleeve is deformed and convex outwards under pressure till the rubber sleeve gets back into the original shape. According to the high leakproofness shoulder-protrusion resistant compression type packer, the technological problems of pressure endurance capability and shoulder-protrusioncan be effectively solved, the leakproofness property of the packer is sharply improved, and the reliability of tools when the tools work under the shaft is guaranteed.
Description
Technical field
Patent of the present invention is related to oil-gas field development downhole tool technical field, more particularly to a kind of compression packer.
Background technology
In oil-gas field development underground work, and in the operation such as drilling well, well cementation, test, completion, existing packer is easy
Appearance causes hair fastener because distorting, or cannot unseal, and sets unstable, easily destroyed etc. situation of packing element, in particular with brill
Excavating technology progress constantly in terms of high temperature, high pressure and complicated deep formation, the working condition of oil gas well mining becomes increasingly complex,
This is for the key tool of underground work --- and packer is put forward higher requirement.
There is certain interval between packer steel body and sleeve pipe, when axial compressive force is excessive, then can produce packing element " shoulder " phenomenon,
And then cause packing element to be destroyed.It is exactly to lay certain in the end of packing element that the anti-lug structure carried out currently for this phenomenon is improved
Blocker ring, support member, stopping means and guard member etc. are planted, to obtain good sealing.Actually come into operation at the scene at present
" protrusion-dispelling " structure species it is less, mainly have two kinds of copper bowl curing type and steel mesh curing type.But as pressure increases, packing element
Shoulder protector there occurs upset, be damaged seriously, cause packing element to be destroyed.Therefore this shoulder protector device can be played in the case of low-pressure
Certain protective effect, but with the increase of pressure, common outburst prevention device can not meet underground work needs.Institute
So that the research of high voltage bearing outburst prevention device is imperative.
The content of the invention
The present invention goal of the invention be：For above-mentioned problem, there is provided one kind seals by force anti-shoulder formula compression
The technical problem of packer, the packer energy effectively solving voltage endurance capability and shoulder, is substantially improved packer sealing performance, it is ensured that
Reliability of the instrument in underground work.
The technical solution used in the present invention is as follows：
One kind seals by force anti-shoulder formula compression packer, including central canal and be connected to the top connection at its two ends and under
Joint, the central canal outside is provided with packing element, and rotation outburst prevention device is provided with the packing element, also includes hydraulic package, institute
State hydraulic package and contact with tubing and casing after its deformation evagination for applying pressure to packing element and making.
In further technical scheme, the rotation outburst prevention device includes canned paragraph, rotation section and connection wind spring, described
Canned paragraph is fixedly connected on packing element, and the rotation section is flexibly connected by connection wind spring with canned paragraph.
In further technical scheme, the connection wind spring has self-return function, and rotation section is fitted in packing element end face
On, during packing element compressive deformation evagination and reinstatement, rotation section is rotated and is fitted in all the time on packing element end face.
In further technical scheme, the packing element is to be provided with air bag at least two, and at least one of which packing element.
In further technical scheme, the packing element is three, respectively goes up packing element, middle packing element and lower rubber cylinder, it is described in
Air bag is provided with packing element.
In further technical scheme, one end of the rotation section of the rotation outburst prevention device can connect after rotation with tubing and casing
Touch.
In further technical scheme, the hydraulic package is closely coupled with lower rubber cylinder, for applying pressure to lower rubber cylinder,
Including hydraulic cylinder, hydraulic drive plunger and sealing ring, the hydraulic drive plunger is installed on hydraulic cylinder with sealing ring cooperation
It is interior.
In further technical scheme, check valve one and check valve two, the check valve one are offered on the central canal
Pass in the runner arranged on its outer wall from center pipe flow for liquid, the check valve two is returned for liquid from the runner
In central canal.
In further technical scheme, the pressure that the check valve one is opened is slightly less than the hydraulic cylinder after the packing element sets
The pressure of cylinder.
In sum, as a result of above-mentioned technical proposal, the invention has the beneficial effects as follows：
Solve the problems, such as that packer voltage endurance capability is low and shoulder.Coordinated with rotation outburst prevention device by the way that packing element will be set, played
Anti- shoulder effect；Install in packing element ballonet by setting wherein, energy can be hoarded when setting and is conducive to rapid deblocking,
And air bag is yielding can be converted to radial force by part axial force, strengthen sealing property；Oil-in is opened up at center tube wall
And oil-out, and center tube wall is externally provided with some runners, when oil pressure is increased in central canal, pushes check valve at oil-in open, to
Center tube wall outer flow passage oiling, fluid radially applies pressure to packing element, further enhancing sealing.This packer is greatly improved
Its sealing property, so as to ensure that reliability of the instrument in underground work.
Description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is structural representation of the present invention in the state that sets；
Fig. 3 is the structural representation of present invention rotation outburst prevention device and packing element cooperation position；
Fig. 4 is schematic diagram of the packing element of the present invention in coordinating with rotation outburst prevention device when setting state；
Fig. 5 is the structural representation of hydraulic package of the present invention；
Fig. 6 is the structural representation of pipe outer wall upper runner in center of the present invention；
Labelling in figure：1st, central canal；2nd, top connection；3rd, lower contact；
4th, outburst prevention device is rotated；5th, hydraulic package；6th, tubing and casing；7th, air bag；
8th, upper packing element；9 is middle packing element；10 is lower rubber cylinder；
11 is check valve one；12 is check valve two；13 is runner；
41 is canned paragraph；42 is rotation section；43 is connection wind spring；
51 is hydraulic cylinder；52 is hydraulic drive plunger；53 is sealing ring.
Specific embodiment
Below in conjunction with the accompanying drawings, the present invention is described in detail.
In order that the objects, technical solutions and advantages of the present invention become more apparent, below in conjunction with accompanying drawing 1 to Fig. 6 and reality
Example is applied, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only to explain this
Invention, is not intended to limit the present invention.
As shown in figure 1, on the one hand the problem to be solved in the present invention is the voltage endurance capability of packer, another is by rotation
Outburst prevention device solves the problems, such as shoulder, including central canal and is connected to the top connection and lower contact at its two ends, the center
Pipe outside is provided with packing element, and rotation outburst prevention device is provided with the packing element, also includes hydraulic package, and the hydraulic package is used for
Pressure is applied to packing element and makes to be contacted with tubing and casing after its deformation evagination.By packing element and the cooperation for rotating outburst prevention device, in glue
During the pressurized deformation of cylinder, and contact with tubing and casing after packing element deformation and set, rotate outburst prevention device all the time to packing element
Protected.In further scheme, for the whole variable condition for adapting to packing element compressive deformation and set, we will rotate
Outburst prevention device is designed as canned paragraph, rotation section and connection wind spring, and as shown in Figure 2, Figure 3 and Figure 4, the canned paragraph is fixedly connected
On packing element, the rotation section is flexibly connected by connection wind spring with canned paragraph, wherein connection wind spring has self-return function,
During packing element compressive deformation evagination and reinstatement, rotation section is rotated and is fitted in all the time on packing element end face, works as glue
After cylinder evagination is contacted with tubing and casing, the top for rotating section contacts with tubing and casing, so as to protect to packing element, meanwhile, in pressure release
During the entire process of, the rotation section is fitted in all the time packing element end face until glue under the self-return function of connection wind spring
Cylinder recovers to original state.
In further technical scheme, the packing element is to be provided with air bag at least two, and at least one of which packing element.
In the present embodiment, we adopt three packing elements, respectively go up packing element, middle packing element and lower rubber cylinder, are provided with the middle packing element
Air bag.Certainly, for which packing element air bag is arranged in, and the particular location being arranged in packing element, can be as needed
It is adjusted, we are arranged on air bag in middle packing element in the present embodiment, when being pressed to lower rubber cylinder by hydraulic package, due to
There is the setting of air bag in middle packing element, deformation evagination is contacted with tubing and casing so middle packing element can take the lead in, and forms initial sealing state；When
Pressure is further raised, and is contacted with tubing and casing after upper packing element and the pressurized evagination of lower rubber cylinder, so as to reach the state that set completely, rotation
The rotation section for turning outburst prevention device is contacted with tubing and casing, effectively prevents each packing element shoulder.
When be completely in set state after, check valve one is pressurized to be opened, as shown in fig. 6, fluid by oil-in by
Runner diffusion on heart Guan Xiangqi outer walls, so as to outwards strengthen radial force to upper packing element, middle packing element and lower rubber cylinder, to reach into one
Step strengthens the effect of sealing, sufficiently solves the problems, such as voltage endurance capability of the present invention.
Hydraulic package employed in above-mentioned technical proposal is closely coupled with lower rubber cylinder, as shown in figure 5, being used for lower rubber cylinder
Apply pressure, including hydraulic cylinder, hydraulic drive plunger and sealing ring, the hydraulic drive plunger is installed on sealing ring cooperation
In hydraulic cylinder.Hydraulic drive plunger moves to act on upwards it is pressed on lower rubber cylinder, and sealing ring is enclosed within hydraulic cylinder the inside
Play sealing function.
At the oil-in of the centrally disposed pipe of check valve one adopted in above-mentioned technical proposal, arrange at central canal oil-out
There is check valve two, when deblocking is needed after the end of job, hydraulic package pressure release, hydraulic drive plunger is descending, central canal inside pressure
Power is reduced, and check valve one is closed, and check valve two is opened releases fluid, so that packing element is returned to original state.
In further technical scheme, the pressure that the check valve one is opened is slightly less than the hydraulic cylinder after the packing element sets
The pressure of cylinder.With fully ensure that in set state completely when, check valve one can be opened in time, and make packing element sets state
It is further strengthened.
If packer needs to set again after terminating, repeat the above steps.
Presently preferred embodiments of the present invention is the foregoing is only, not to limit the present invention, all essences in the present invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (9)
1. one kind seals by force anti-shoulder formula compression packer, it is characterised in that：Including central canal (1) and it is connected to it
Packing element is arranged with outside the top connection (2) and lower contact (3) at two ends, the central canal (1), rotation protrusion-dispelling is provided with the packing element
Device (4), also includes hydraulic package (5), and the hydraulic package (5) to packing element for applying pressure and it is deformed after evagination
Contact with tubing and casing (6).
2. one kind according to claim 1 seals by force anti-shoulder formula compression packer, it is characterised in that：The rotation is anti-
Prominent device (4) includes canned paragraph (41), rotation section (42) and connection wind spring (43), and the canned paragraph (41) is fixedly connected on glue
On cylinder, rotation (42) section is flexibly connected by connection wind spring (43) with canned paragraph (41).
3. one kind according to claim 2 seals by force anti-shoulder formula compression packer, it is characterised in that：The connection volume
With self-return function, rotation section (42) is fitted on packing element end face spring (43), in packing element compressive deformation evagination and recovery
During original state, rotation section (42) is rotated and is fitted in all the time on packing element end face.
4. the one kind according to Claims 2 or 3 seals by force anti-shoulder formula compression packer, it is characterised in that：The glue
Cylinder is to be provided with air bag (7) at least two, and at least one of which packing element.
5. one kind according to claim 4 seals by force anti-shoulder formula compression packer, it is characterised in that：The packing element is
Three, respectively go up in packing element (8), middle packing element (9) and lower rubber cylinder (10), the middle packing element (9) and be provided with air bag (7).
6. the one kind according to Claims 2 or 3 seals by force anti-shoulder formula compression packer, it is characterised in that：The rotation
Turning one end of the rotation section (42) of outburst prevention device (4) can contact after rotation with tubing and casing (6).
7. one kind according to claim 5 seals by force anti-shoulder formula compression packer, it is characterised in that：The hydraulic pressure group
Part (5) is closely coupled with lower rubber cylinder (10), for applying pressure, including hydraulic cylinder (51), hydraulic drive to lower rubber cylinder (10)
Plunger (52) and sealing ring (53), the hydraulic drive plunger (52) is installed on hydraulic cylinder (51) with sealing ring (53) cooperation
It is interior.
8. one kind according to claim 1 seals by force anti-shoulder formula compression packer, it is characterised in that：The central canal
(1) check valve one (11) and check valve two (12) are offered on, the check valve one (11) circulates for liquid from central canal (1)
In the runner (13) arranged to its outer wall, the check valve two (12) returns central canal for liquid from the runner (13)
(1) in.
9. one kind according to claim 7 seals by force anti-shoulder formula compression packer, it is characterised in that：The check valve
One (11) pressure opened is slightly less than the pressure of the hydraulic cylinder (51) after the packing element sets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710140997.4A CN106639964A (en) | 2017-03-10 | 2017-03-10 | High leakproofness shoulder-protrusion resistant compression type packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710140997.4A CN106639964A (en) | 2017-03-10 | 2017-03-10 | High leakproofness shoulder-protrusion resistant compression type packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106639964A true CN106639964A (en) | 2017-05-10 |
Family
ID=58847535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710140997.4A Pending CN106639964A (en) | 2017-03-10 | 2017-03-10 | High leakproofness shoulder-protrusion resistant compression type packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106639964A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106948785A (en) * | 2017-05-23 | 2017-07-14 | 河北宏龙环保科技有限公司 | A kind of oil well production string cutting method and cutter device |
| CN106958432A (en) * | 2017-05-25 | 2017-07-18 | 隆学武 | Increase full bag enhancing set, processing method, cartridge and the packer of laminating degree |
| CN107130937A (en) * | 2017-06-30 | 2017-09-05 | 四川达灿石油设备有限公司 | HTHP persistence colloid seal |
| CN107916908A (en) * | 2017-12-11 | 2018-04-17 | 中国石油天然气股份有限公司 | Compound sealing mechanism in a kind of pipe |
| CN107939332A (en) * | 2017-11-27 | 2018-04-20 | 中国石油集团渤海钻探工程有限公司 | A kind of degradable floating type protrusion-resisting protective device of packer |
| CN110735612A (en) * | 2019-11-08 | 2020-01-31 | 西南石油大学 | double-acting ultrahigh-pressure clamping and sealing rubber cylinder |
| CN112127829A (en) * | 2019-09-06 | 2020-12-25 | 天津科技大学 | Compression packer packing element with deformation element |
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| CN2479188Y (en) * | 2001-04-28 | 2002-02-27 | 张永存 | Packer |
| CN2713128Y (en) * | 2004-07-04 | 2005-07-27 | 任德庆 | Packer with movable pile casing |
| CN2720104Y (en) * | 2004-08-13 | 2005-08-24 | 阜新市石油工具厂 | Fully-closed hydraulic packer |
| CN201908613U (en) * | 2010-12-23 | 2011-07-27 | 中国石油集团渤海钻探工程有限公司 | Opening valve type expansion packer |
| CN203685115U (en) * | 2013-10-17 | 2014-07-02 | 北京一龙恒业石油工程技术有限公司 | Rubber tube protruding prevention ring for permanent packer |
| US20140262350A1 (en) * | 2013-03-14 | 2014-09-18 | Michael C. Derby | Double Compression Set Packer |
| CN203879447U (en) * | 2014-05-21 | 2014-10-15 | 中国石油大学(华东) | Expansion type one-way leakproof packer |
| CN204040996U (en) * | 2014-09-05 | 2014-12-24 | 西安石油大学 | Smart well passes through formula packer |
| CN105114027A (en) * | 2015-08-06 | 2015-12-02 | 东北石油大学 | Flexible self-sealed anti-humeral-protrusion compression packer |
| CN105604521A (en) * | 2016-02-23 | 2016-05-25 | 西南石油大学 | Multifunctional compression packer rubber sleeve unit experiment device |
| CN106089146A (en) * | 2016-08-22 | 2016-11-09 | 天鼎联创密封技术（北京）有限公司 | Packing element, packer and bridging plug including tinsel sealing ring |
| CN106285553A (en) * | 2015-05-15 | 2017-01-04 | 天津统晟石油科技有限公司 | A kind of extension hanger |
| CN206581918U (en) * | 2017-03-10 | 2017-10-24 | 西南石油大学 | One kind seals by force anti-shoulder formula compression packer |
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2017
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| CN2479188Y (en) * | 2001-04-28 | 2002-02-27 | 张永存 | Packer |
| CN2713128Y (en) * | 2004-07-04 | 2005-07-27 | 任德庆 | Packer with movable pile casing |
| CN2720104Y (en) * | 2004-08-13 | 2005-08-24 | 阜新市石油工具厂 | Fully-closed hydraulic packer |
| CN201908613U (en) * | 2010-12-23 | 2011-07-27 | 中国石油集团渤海钻探工程有限公司 | Opening valve type expansion packer |
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| CN204040996U (en) * | 2014-09-05 | 2014-12-24 | 西安石油大学 | Smart well passes through formula packer |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106948785A (en) * | 2017-05-23 | 2017-07-14 | 河北宏龙环保科技有限公司 | A kind of oil well production string cutting method and cutter device |
| CN106958432A (en) * | 2017-05-25 | 2017-07-18 | 隆学武 | Increase full bag enhancing set, processing method, cartridge and the packer of laminating degree |
| CN107130937A (en) * | 2017-06-30 | 2017-09-05 | 四川达灿石油设备有限公司 | HTHP persistence colloid seal |
| CN107130937B (en) * | 2017-06-30 | 2019-04-23 | 四川达灿石油设备有限公司 | High temperature and pressure persistence colloid sealing element |
| CN107939332A (en) * | 2017-11-27 | 2018-04-20 | 中国石油集团渤海钻探工程有限公司 | A kind of degradable floating type protrusion-resisting protective device of packer |
| CN107916908A (en) * | 2017-12-11 | 2018-04-17 | 中国石油天然气股份有限公司 | Compound sealing mechanism in a kind of pipe |
| CN112127829A (en) * | 2019-09-06 | 2020-12-25 | 天津科技大学 | Compression packer packing element with deformation element |
| CN110735612A (en) * | 2019-11-08 | 2020-01-31 | 西南石油大学 | double-acting ultrahigh-pressure clamping and sealing rubber cylinder |
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Application publication date: 20170510 |