CN106761538A - Long packing element packer for oil field isolation - Google Patents
Long packing element packer for oil field isolation Download PDFInfo
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- CN106761538A CN106761538A CN201611205038.8A CN201611205038A CN106761538A CN 106761538 A CN106761538 A CN 106761538A CN 201611205038 A CN201611205038 A CN 201611205038A CN 106761538 A CN106761538 A CN 106761538A
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- China
- Prior art keywords
- packing element
- packer
- oil field
- sleeve
- central tube
- 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
- 238000012856 packing Methods 0.000 title claims description 67
- 238000002955 isolation Methods 0.000 title abstract description 7
- 238000007789 sealing Methods 0.000 claims description 30
- 229910000831 Steel Inorganic materials 0.000 claims description 20
- 239000010959 steel Substances 0.000 claims description 20
- 238000004073 vulcanization Methods 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000013461 design Methods 0.000 description 13
- POIUWJQBRNEFGX-XAMSXPGMSA-N cathelicidin Chemical compound C([C@@H](C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CO)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H]([C@@H](C)CC)C(=O)NCC(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CC=1C=CC=CC=1)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](C(C)C)C(=O)N[C@@H](CCC(N)=O)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CC(O)=O)C(=O)N[C@@H](CC=1C=CC=CC=1)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CC(N)=O)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](C(C)C)C(=O)N1[C@@H](CCC1)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H]([C@@H](C)O)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CO)C(O)=O)NC(=O)[C@H](CC=1C=CC=CC=1)NC(=O)[C@H](CC(O)=O)NC(=O)CNC(=O)[C@H](CC(C)C)NC(=O)[C@@H](N)CC(C)C)C1=CC=CC=C1 POIUWJQBRNEFGX-XAMSXPGMSA-N 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 230000006835 compression Effects 0.000 description 7
- 238000007906 compression Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 5
- 239000003129 oil well Substances 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 241001074085 Scophthalmus aquosus Species 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000007717 exclusion Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000002627 tracheal intubation Methods 0.000 description 1
- 238000003466 welding 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
- E21B33/127—Packers; Plugs with inflatable sleeve
-
- 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
- E21B33/126—Packers; Plugs with fluid-pressure-operated elastic cup or skirt
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 a long rubber sleeve packer for an oil field isolation, which at least comprises a central tube, wherein the upper end of the central tube is connected with an upper joint, the lower end of the central tube is connected with a lower joint, a connecting sleeve, a connecting head, a spring seat sleeve, an intermediate rubber sleeve component and a sliding sleeve are sequentially sleeved on the central tube from top to bottom, the upper end of the connecting sleeve is connected with the upper joint, the lower end of the connecting sleeve is connected with the upper end of the connecting head, the inner circular surface of the lower end of the connecting head is connected with a piston switch, the outer circular surface of the lower end of the connecting head is connected with the upper end of a spring seat sleeve, the lower end of the spring seat sleeve is connected with the upper end of the intermediate rubber sleeve component, the lower end of the intermediate rubber sleeve component is connected with the sliding sleeve, a positioning step is arranged in the lower joint, and the expandable packer is applied to the isolation production for the first time, so that the expandable packer has a longer effective isolation surface, and the success rate of the isolation is improved.
Description
Technical field
The present invention relates to a kind of oil extraction in oil field process unit, more particularly to caused by casing failure, corrosion failure oil reservoir with
The oil well of water layer UNICOM is a kind of oil field every using long packing element packer specifically every the process unit adopted.
Background technology
With the continuity of oil field development time, down-hole casing breaks because set occur successively in the reasons such as corrosion, causes stratum with oil
Layer UNICOM, have impact on oil field normally exploitation even pollution stratum water source welding, add up to surpass 20,000 muzzles to current petrochina
Broken well.The technique more common for the broken well of set has casing patching, chemical plugging, secondary well cementation, packer every adopting, wherein insulating
Device is every excavating technology is simple, convenient construction, low cost account for covering brokenly more than the 80% of well improvement.Currently used for every the packer master for adopting
There are two kinds, one is traditional Y111, Y211, Y341 etc. conventional every packer is adopted, and its potted component is sat using compression
Envelope compression travel is short, it is poor to compress smaller packing effect；Secondly be the long-life such as Y141, Y453, Y445 every packer is adopted, it is such
Packer needs to enter to be set under supporting special setting tool is leading, then enters down after flow string band intubation is docked just
Often production using specific purpose tool when rising, it is necessary to carry out brill mill, complicated construction technique, high cost.
The content of the invention
In view of the above-mentioned problems existing in the prior art, the present invention is devised and a kind of is applied to cased hole completion and reservoir top goes out
Water and the reverse-filling of the run-down place's water outlet of sleeve pipe have longer effective every completion system is adopted compared with conventional Water-isolation oil production packer
The oil field in packing face is every using long packing element packer.
The technical solution adopted in the present invention is as follows：
At least opened including top connection, central tube, adapter sleeve, connector, piston every long packing element packer is used in a kind of oil field
Pass, spring socket sleeve, intermediate rubber cartridge module, slip cap, lower contact, shear pin, ball seat are set, the upper end of described central tube is connected with
Top connection, the lower end of central tube is connected with lower contact, is socketed with adapter sleeve, connector, spring on central tube successively from top to bottom
Cover for seat, intermediate rubber cartridge module and slip cap, the upper end of adapter sleeve are connected with top connection, outside the lower end and connector upper end of adapter sleeve
Disc is connected, and connector lower end inner headed face is connected with piston switch, in the upper end of connector lower end periphery and spring socket sleeve
Disc is connected, and the lower end of spring socket sleeve is connected with intermediate rubber cartridge module upper end, and the lower end of intermediate rubber cartridge module is connected with slip cap,
Positioning step is provided with lower contact, ball seat is fixed with positioning step.
Described intermediate rubber cartridge module includes upper jacket, upper packing element fixed seat, sets packing element, lower jacket and lower rubber cylinder and fix
Seat, the upper end of described upper jacket is threadedly coupled with spring socket sleeve, and the lower end of upper jacket is threadedly coupled with upper packing element fixed seat, on
Vulcanization is fixed with and sets packing element between packing element fixed seat and lower rubber cylinder fixed seat, lower rubber cylinder fixed seat it is cylindrical upper with lower jacket
End connection, the lower end of lower jacket is threadedly coupled with slip cap.
Steel belt framework is set with described sealing cylinder, the outer round surface vulcanization of described steel belt framework is fixed with length not
Cartridge less than 1.5m.
Back-moving spring is clamped between described piston switch and spring socket sleeve.
Described adapter sleeve is connected with top connection by unsealing shear pin.
Interior groove is provided with described connector, O-ring is housed on interior groove.
The inside that vulcanization has Rubber cap-like outer cover for closure, piston switch on described piston switch is equipped with sealing ring.
It is connected through a screw thread between the upper end of described central tube and top connection, is led between the lower end of central tube and lower contact
Cross threaded connection；Connector lower end periphery is connected through a screw thread with the upper end inner headed face of spring socket sleeve.
The interior circular groove of described slip cap is built with sealing ring.
Described ball seat is fixedly connected at the positioning step of lower contact by setting shear pin；Steel ball is provided with ball seat,
The outer surface of ball seat is equipped with sealing ring.
Beneficial effects of the present invention：
Firstth, packer element involved in the present invention is set using expanding, is realizing one-trip string completion seat
On the premise of envelope, production, with longer effective packing face (cartridge can be designed in more than 1.5m), packing greatly improved
Success rate；
Secondth, packer inside without any position constraint there is longer compression travel can obtain larger compression ratio, foot
To ensure that sealing unit fully sets, good sealing effect；
3rd, the packer controlled using piston switch locking (when tubing pressure be more than 5MPa when piston switch 8 open
Open), the gas pressure relief slot control deblocking on central tube, it is internal without positioning hydraulic cavities, self-locking mechanism and solution sealing mechanism etc., realize it is electrodeless
Design difficulty of processing is greatly reduced on the premise of differential self-locking, while ensure that packer bulk strength, the later stage is reduced
Accident rate is salvaged in deblocking；
4th, the packer is supported and set without shaft bottom and do not influenceed by casing coupling, is capable of achieving any position in pit shaft
That puts sets, unseals, pit shaft strong adaptability；
5th, the packer has been broken every the design routine for adopting class packer " sealing unit+slips " first, employs seat
The packing element sealing surface (can reach more than 1m) for being honored as a queen long carries out grappling with sleeve friction power, and bit freezing is easily caused when eliminating deblocking
The slips of risk, potential safety hazard is eliminated from design source, is significantly reduced deblocking and is salvaged risk.
Brief description of the drawings
Fig. 1 is structural representation of the invention.
Description of reference numerals：
1st, top connection；2nd, central tube；3rd, shear pin is unsealed；4th, adapter sleeve；5th, connector；6th, O-ring sealing；7th, gum cover；8、
Piston switch；9th, back-moving spring；10th, spring socket sleeve；11st, upper jacket；12nd, upper packing element fixed seat；13rd, packing element is set；14th, steel band
Skeleton；15th, cartridge；16th, lower jacket；17th, lower rubber cylinder fixed seat；18th, slip cap；19th, sealing ring；20th, lower contact；21、
Steel ball；22nd, shear pin is set；23 ball seats.
Specific embodiment：
Embodiment 1:
As shown in figure 1, the invention provides a kind of oil field every long packing element packer is used, at least including top connection 1, center
Pipe 2, adapter sleeve 4, connector 5, piston switch 8, spring socket sleeve 10, intermediate rubber cartridge module, slip cap 18, lower contact 20, set
Shear pin 22, ball seat 23, the upper end of described central tube 2 are connected with top connection 1, and the lower end of central tube 2 is connected with lower contact 20, in
It is socketed with adapter sleeve 4, connector 5, spring socket sleeve 10, intermediate rubber cartridge module and slip cap 18 on heart pipe 2 successively from top to bottom, even
The upper end of female connector 4 is connected with top connection 1, and the lower end of adapter sleeve 4 is connected with the upper end periphery of connector 5, the lower end inner circle of connector 5
Face is connected with piston switch 8, and the lower end periphery of connector 5 is connected with the upper end inner headed face of spring socket sleeve 10, spring socket sleeve 10
Lower end be connected with intermediate rubber cartridge module upper end, the lower end of intermediate rubber cartridge module is connected with slip cap 18, sets in lower contact 20
There is positioning step, ball seat 23 is fixed with positioning step.
Packer element of the present invention is set using expanding, is realized one-trip string and is completed set, produce,
Greatly simplifie construction technology；Production only need to be by the packer with being connected in oil extraction in oil field tubing string, and its tubing string can be designed
It is (from well head to underground)：Oil pipe+oil well pump+overcurrent-overvoltage standing valve+oil pipe+the design long packing element packer+oil pipe+eye pipe
+ tail pipe+dead stifled, its Central Plains pump standing valve needs to be replaced by overcurrent-overvoltage standing valve (can excessively stream, overvoltage), it is normal under be drilled into design
Position connected pipes are hung, and oil pipe is suppressed, packer setting, 15MPa when packer startup, 10MPa when pressure is to 5MPa
When set shear pin 422 and cut, steel ball 421 falls into tail pipe with ball seat 423, and lower oil well pump, sucker rod simultaneously touch pump, now overcurrent-overvoltage
Standing valve is seated on ball seat, and normal oil recovery, the connection of the packer upper end can be started after installing production wellhead and oil pumper
Set 4 is threadedly coupled by unsealing shear pin 3 with top connection 1, deblocking shear pin is cut when needing to salvage, by putting on joint in continuation
1, you can risen with flow string by the long packing element packer, complete inspection pump or fishing.
Embodiment 2:
On the basis of embodiment 1, the invention provides a kind of oil field every long packing element packer is used, at least including above connecing
First 1, central tube 2, adapter sleeve 4, connector 5, piston switch 8, spring socket sleeve 10, intermediate rubber cartridge module, slip cap 18, lower contact
20th, shear pin 22, ball seat 23 are set, the upper end of described central tube 2 has been connected through a screw thread top connection 1, and the lower end of central tube 2 leads to
Cross and be threaded with lower contact 20, be socketed with successively from top to bottom on central tube 2 adapter sleeve 4, connector 5, spring socket sleeve 10, in
Between packing element component and slip cap 18, described adapter sleeve 4 is connected with top connection 1 by unsealing shear pin 3, the lower end of adapter sleeve 4 with
The upper end periphery connection of connector 5, interior groove is provided with connector 5, and O-ring 6, the lower end inner circle of connector 5 are housed on interior groove
Face is connected with piston switch 8, and the lower end periphery of connector 5 is connected through a screw thread with the upper end inner headed face of spring socket sleeve 10, institute
The inside that vulcanization has Rubber cap-like outer cover for closure 7, piston switch 8 on the piston switch 8 stated is equipped with sealing ring, piston switch 8 and spring socket sleeve
Back-moving spring 9 is clamped between 10, the lower end of spring socket sleeve 10 is connected with intermediate rubber cartridge module upper end, under intermediate rubber cartridge module
End is connected with slip cap 18, and built with sealing ring 19, lower contact 20 is interior to be provided with positioning table to the interior circular groove of described slip cap 18
Rank, described ball seat 23 is fixedly connected at the positioning step of lower contact 20 by setting shear pin 22, and is set under shear pin 22
End is withstood on ball seat；Steel ball 21 is provided with described ball seat 23, the outer surface of ball seat 23 is equipped with sealing ring.
Described intermediate rubber cartridge module include upper jacket 11, upper packing element fixed seat 12, set packing element 13, lower jacket 16 and under
Packing element fixed seat 17, the upper end of described upper jacket 11 is threadedly coupled with spring socket sleeve 10, the lower end of upper jacket 11 and upper packing element
Fixed seat 12 is threadedly coupled, and vulcanization is fixed with and sets packing element 13 between upper packing element fixed seat 12 and lower rubber cylinder fixed seat 17, described
Sealing cylinder 13 in be set with steel belt framework 14, the outer round surface vulcanization of described steel belt framework 14 is fixed with cartridge 15,
The upper end of the cylindrical and lower jacket 16 of lower rubber cylinder fixed seat 17 is connected, and the lower end of lower jacket 16 is threadedly coupled with slip cap 18.
Assembling process of the invention is：First adapter sleeve 4 is set with from the top of central tube 2, then top connection 1 and central tube
2 threaded connections, deblocking shear pin 3 is screwed in behind alignment adapter sleeve 4 and the shear pin hole of top connection 1；O-ring 6 is first loaded into connector 5
, from the bottom of central tube 2 be set with connector 5 again then and be threadedly coupled with adapter sleeve 4 by interior groove；Rubber cap-like outer cover for closure 7 cures
On piston switch 8, sealing ring is first loaded onto inside piston switch 8 and then from the bottom of central tube 2 suit, it is delayed again successively from center
The bottom of pipe 2 is set with back-moving spring 9, spring socket sleeve 10, and spring socket sleeve 10 is threadedly coupled with connector 5, now completes top
Divide and install.
First by steel belt framework 14 (typically about 100 or so) in sequence one by one cylindric frock (with set packing element
13 grade external diameters) cylindrical place arrange blend rubber bar binding, then welded at two ends；Packing element 13 (uncolled) will be set
In upper packing element fixed seat 12 and lower rubber cylinder fixed seat 17,14 sets of loadings of the steel belt framework that then will be welded set packing element for vulcanization
13, finally upper jacket 11 is threadedly coupled with upper packing element fixed seat 12, lower jacket 16 with lower rubber cylinder fixed seat 17 respectively again；Wait
Set after packing element 13 is cooled down and cartridge 15 is vulcanized into position corresponding in the outer round surface of steel belt framework 14 again, now complete middle
The installation of packing element component.
Sealing ring first is loaded onto in the outer surface of ball seat 23, is then loaded to positioning step from the endoporus of lower contact 20, then will
Set shear pin 22 to be screwed in from the hole of lower contact 20 up to withstanding in the outer surface groove of ball seat 23, now complete lower part and install.
Mounted packing element component is covered from the bottom of central tube 2 again after the external screw thread root of spring socket sleeve 10 loads sealing ring
Dress, and upper jacket 11 is threadedly coupled with spring socket sleeve 10；First load sealing ring 19, external screw thread in the interior circular groove of slip cap 18
Root loads sealing ring, is then set with and is threadedly coupled with lower jacket 16 from the bottom of central tube 2 again；Finally by lower contact 20 with
Heart pipe 2 is threadedly coupled and is put into steel ball from the top of central tube 2 and completes all installation processes.
Working mechanism of the invention is following (with 51/2As a example by the broken well construction of the set of 〞 oil pipe completions)：
1st, normal lower brill
The packer is mainly used in the broken well top water exclusion of oil field set, and its completion tubular column may be designed as (from well head to underground)：
Oil pipe+oil well pump+overcurrent-overvoltage standing valve+oil pipe+the design long packing element packer+oil pipe+eye pipe+tail pipe+dead stifled, its Central Plains
Pump standing valve needs to be replaced by overcurrent-overvoltage standing valve (can excessively stream, overvoltage), it is normal under be drilled into design attitude connected pipes and hang i.e.
Can.
2nd, set packer
Suppressed in oil pipe, when pressurization reaches 5MPa, piston switch 8 promotes compression reseting spring 9 to transport downwards by hydraulic coupling
Dynamic, while Rubber cap-like outer cover for closure 7 also leaves taper hole slot with piston switch 8, liquid is passed sequentially through between piston switch 8 and spring socket sleeve 10
Gap and spring socket sleeve 10 enter intermediate rubber cartridge module with the gap of central tube 2, cause and set packing element 13, steel belt framework 14, fluid sealant
The bulging together of cylinder 15, then drives the constantly sliding upwards of lower jacket 16, lower rubber cylinder fixed seat 17, slip cap 18；With pressure
Constantly expansion is finally close to internal surface of sleeve pipe to gradually rise cartridge 15, completes to set when pressure reaches 10MPa；Now continue
Pressure is improved, shear pin 22 is set when pressure is to 15MPa and is cut, steel ball 21 falls into tail pipe with ball seat 23, now oil pipe moment pressure
Power reduction, shows that instrument sets completely.
3rd, it is normal to recover the oil
Lower sucker rod simultaneously touches pump, and now overcurrent-overvoltage standing valve is seated on ball seat (equivalent to conventional standing valve), installs
Normal oil recovery can be started after production wellhead and oil pumper, the oil of bottom oil layer enters oil pipe and passes through the design long packing element type through eye pipe
It is plucked out of into oil well pump after packer, the oil jacket annular space at the design long packing element packer position is realized just by completely separated
Often recover the oil.
4th, pump or salvaging are examined
When needing inspection pump or salvaging, oil pumper and production wellhead are laid down, act sucker rod, then above carried flow string and first cut
Disconnected deblocking shear pin 3, then proceedes to propose now top connection 1, central tube 2 and constantly moves up, when the bottom gas pressure relief slot of central tube 2 is logical
Cross sealing ring 19 and laid down into intermediate rubber cartridge module internal pressure after 18 times step endoporus of slip cap, set packing element 13, steel band
Skeleton 14, cartridge 15 bounce back together, when the outer surface of upper step of central tube 2 is run to the interior step of adapter sleeve 4, band
Dynamic adapter sleeve 4, connector 5, spring socket sleeve 10, back-moving spring 9, piston switch 8, Rubber cap-like outer cover for closure 7, upper jacket 11, upper packing element are consolidated
Reservation 12, set packing element 13, steel belt framework 14, cartridge 15, lower jacket 16, lower rubber cylinder fixed seat 17, slip cap 18 together
It is up, deblocking packer overall process is realized, the design long packing element packer is risen with flow string, completes inspection pump or salvaging
Operation.
In sum, it is applied to cased hole completion and the water outlet of reservoir top and the run-down place's water outlet of sleeve pipe the invention provides one kind
Reverse-filling every adopting completion system, a kind of long packing element packer designed particularly directed to the broken well top water exclusion of oil field set should
Packer is combined with oil field rod-type pumping unit DP technology, it is possible to achieve one-trip string completes set, produce, and will expand first
Formula packer application is opened every adopting, there is longer effective packing face compared with conventional Water-isolation oil production packer, greatly improved
Packing success rate is, it is necessary to upper lifting pipe post can carry out deblocking salvaging during wellbore operations.
The packer has the following advantages that：1st, packer element involved in the present invention is set using expanding,
On the premise of realizing that one-trip string completes to set, produce, with longer effective packing face, (cartridge 15 can be designed in 1.5m
More than), packing success rate greatly improved；2nd, packer inside without any position constraint there is longer compression travel can obtain
Larger compression ratio, it is sufficient to ensure that sealing unit fully sets, good sealing effect；3rd, the packer is controlled using piston switch
Gas pressure relief slot in locking (piston switch 8 is opened when tubing pressure is more than 5MPa), central tube controls deblocking, internal without positioning liquid
Pressure chamber, self-locking mechanism and solution sealing mechanism etc., design difficulty of processing is greatly reduced on the premise of electrodeless differential self-locking is realized,
Packer bulk strength is ensure that simultaneously, later stage deblocking is reduced and is salvaged accident rate；4th, the packer without shaft bottom support and
Set is not influenceed by casing coupling, is capable of achieving optional position in pit shaft and is set, unseals, pit shaft strong adaptability；5th, the packer
Break first every the design routine for adopting class packer " sealing unit+slips ", employing packing element sealing surface long after setting (can
Reach more than 1m) grappling is carried out with sleeve friction power, the slips of bit freezing risk is easily caused when eliminating deblocking, from design source
Potential safety hazard is eliminated, deblocking is significantly reduced and is salvaged risk.
Claims (10)
1. a kind of oil field is every using long packing element packer, it is characterised in that：At least include top connection (1), central tube (2), connection
Set (4), connector (5), piston switch (8), spring socket sleeve (10), intermediate rubber cartridge module, slip cap (18), lower contact (20),
Shear pin (22), ball seat (23) are set, the upper end of described central tube (2) is connected with top connection (1), and the lower end of central tube (2) connects
Be connected to lower contact (20), be socketed with successively from top to bottom on central tube (2) adapter sleeve (4), connector (5), spring socket sleeve (10),
Intermediate rubber cartridge module and slip cap (18), the upper end of adapter sleeve (4) are connected with top connection (1), the lower end of adapter sleeve (4) be connected
Head (5) upper end periphery connection, connector (5) lower end inner headed face is connected with piston switch (8), and connector (5) lower end is cylindrical
Face is connected with the upper end inner headed face of spring socket sleeve (10), and the lower end of spring socket sleeve (10) is connected with intermediate rubber cartridge module upper end, in
Between the lower end of packing element component be connected with slip cap (18), positioning step is provided with lower contact (20), described ball seat (23) leads to
Cross and set shear pin (22) and be fixed at described positioning step.
2. a kind of oil field according to claim 1 is every using long packing element packer, it is characterised in that：Described middle packing element
Component includes upper jacket (11), upper packing element fixed seat (12), sets packing element (13), lower jacket (16) and lower rubber cylinder fixed seat
(17), the upper end of described upper jacket (11) is threadedly coupled with spring socket sleeve (10), and the lower end of upper jacket (11) is solid with upper packing element
Reservation (12) is threadedly coupled, and vulcanization is fixed with and sets packing element between upper packing element fixed seat (12) and lower rubber cylinder fixed seat (17)
(13), the upper end of the cylindrical and lower jacket (16) of lower rubber cylinder fixed seat (17) is connected, the lower end of lower jacket (16) and slip cap
(18) it is threadedly coupled.
3. a kind of oil field according to claim 2 is every using long packing element packer, it is characterised in that：Described sealing cylinder
(13) steel belt framework (14) is set with, the outer round surface vulcanization of described steel belt framework (14) is fixed with length not less than 1.5m
Cartridge (15).
4. a kind of oil field according to claim 1 is every using long packing element packer, it is characterised in that：Described piston switch
(8) back-moving spring (9) is clamped with and spring socket sleeve (10) between.
5. a kind of oil field according to claim 1 is every using long packing element packer, it is characterised in that：Described adapter sleeve
(4) it is connected by unsealing shear pin (3) with top connection (1).
6. a kind of oil field according to claim 1 is every using long packing element packer, it is characterised in that：Described connector
(5) interior groove is provided with, O-ring (6) is housed on interior groove.
7. a kind of oil field according to claim 1 is every using long packing element packer, it is characterised in that：Described piston switch
(8) inside that vulcanization has Rubber cap-like outer cover for closure (7), piston switch (8) on is equipped with sealing ring.
8. a kind of oil field according to claim 1 is every using long packing element packer, it is characterised in that：Described central tube
(2) it is connected through a screw thread between upper end and top connection (1), screw thread is passed through between the lower end of central tube (2) and lower contact (20)
Connection；Connector (5) lower end periphery is connected through a screw thread with the upper end inner headed face of spring socket sleeve (10).
9. a kind of oil field according to claim 1 is every using long packing element packer, it is characterised in that：Described slip cap
(18) interior circular groove is built with sealing ring (19).
10. a kind of oil field according to claim 1 is every using long packing element packer, it is characterised in that：Described ball seat
(23) steel ball (21) is provided with, the outer surface of ball seat (23) is equipped with sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611205038.8A CN106761538A (en) | 2016-12-23 | 2016-12-23 | Long packing element packer for oil field isolation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611205038.8A CN106761538A (en) | 2016-12-23 | 2016-12-23 | Long packing element packer for oil field isolation |
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| CN106761538A true CN106761538A (en) | 2017-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611205038.8A Pending CN106761538A (en) | 2016-12-23 | 2016-12-23 | Long packing element packer for oil field isolation |
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| CN109826587A (en) * | 2019-02-11 | 2019-05-31 | 中国石油天然气股份有限公司 | Large-drift-diameter water-proof oil extraction packer and operation method thereof |
| CN110965958A (en) * | 2019-11-26 | 2020-04-07 | 宝鸡瑞林石油机电设备有限责任公司 | Bidirectional seat seal backflow-preventing packer |
| CN114645686A (en) * | 2022-03-03 | 2022-06-21 | 刘超 | Hydraulic expanding packer for oil field |
| CN115506748A (en) * | 2022-09-26 | 2022-12-23 | 中海石油(中国)有限公司 | Packer setting energy storage device and using method thereof |
| CN117846525A (en) * | 2024-03-06 | 2024-04-09 | 东营市瑞丰石油技术发展有限责任公司 | Bridge plug type through-oil-pipe expansion packer, and sending tool and sending method thereof |
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| CN117846525A (en) * | 2024-03-06 | 2024-04-09 | 东营市瑞丰石油技术发展有限责任公司 | Bridge plug type through-oil-pipe expansion packer, and sending tool and sending method thereof |
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