CN104806194B - Environment-friendly type washing well water injection packer with step-by-step deblocking - Google Patents
Environment-friendly type washing well water injection packer with step-by-step deblocking Download PDFInfo
- Publication number
- CN104806194B CN104806194B CN201510250962.7A CN201510250962A CN104806194B CN 104806194 B CN104806194 B CN 104806194B CN 201510250962 A CN201510250962 A CN 201510250962A CN 104806194 B CN104806194 B CN 104806194B
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- tube
- inlet opening
- pipe
- excenter
- overcoat
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- 238000002347 injection Methods 0.000 title claims abstract description 32
- 239000007924 injection Substances 0.000 title claims abstract description 32
- 238000005406 washing Methods 0.000 title claims abstract description 20
- 235000020681 well water Nutrition 0.000 title claims abstract description 13
- 239000002349 well water Substances 0.000 title claims abstract description 13
- 238000012856 packing Methods 0.000 claims abstract description 58
- 239000003292 glue Substances 0.000 claims description 32
- 238000011010 flushing procedure Methods 0.000 claims description 25
- 229910000831 Steel Inorganic materials 0.000 claims description 16
- 239000010959 steel Substances 0.000 claims description 16
- 238000007789 sealing Methods 0.000 claims description 8
- 239000012530 fluid Substances 0.000 claims description 4
- 125000006850 spacer group Chemical group 0.000 claims description 4
- 238000005303 weighing Methods 0.000 claims description 2
- 238000003780 insertion Methods 0.000 claims 1
- 230000037431 insertion Effects 0.000 claims 1
- 230000007613 environmental effect Effects 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 44
- 238000000034 method Methods 0.000 description 10
- 239000010410 layer Substances 0.000 description 7
- 239000000243 solution Substances 0.000 description 5
- 230000009972 noncorrosive effect Effects 0.000 description 4
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000010008 shearing 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
-
- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/20—Displacing by water
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (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)
- Mechanical Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a kind of environment-friendly type washing well water injection packer with step-by-step deblocking, include central tube, top connection, set one's heart pipe, upper overcoat, lock tube, excenter tube, packing element and lower contact, wherein top connection is set on central tube, set one's heart pipe to be located in the inner chamber between top connection and central tube, set one's heart and be connected between pipe upper end and central tube, upper overcoat, which is set in, sets one's heart on pipe, it is connected between the upper end of upper overcoat and top connection, lock tube is set in the lower end of overcoat, jump ring is provided with inner chamber between lock tube and central tube, jump ring is located on clip spring seat, excenter tube is set on central tube, the upper end of excenter tube is connected with clip spring seat, packing element is located between lock tube and lower contact, beneficial effect：Packing element anti-sticking is realized, the security reliability of removing seal for packer is substantially increased.So the characteristics of environment-friendly type washing well gradually deblocking packer clamp-proof mechanism has novel simple to operate, structure, safety and environmental protection.
Description
Technical field
The present invention relates to a kind of water injection packer, more particularly to a kind of environment-friendly type washing well water injection packer with step-by-step deblocking.
Background technology
At present, with the exploitation in oil field, more oil-bearing stratum floodings are needed in same well, to improve recovery ratio.Here it is
The subdivision of reservoir water filling in oil field, subdivision of reservoir water filling is accomplished by connecting greater number of packer on injection well pipe column, passes through packing
Device oil-separating layer, and the packer used is generally gradually deblocking packer, gradually deblocking packer deblocking power effect in deblocking
On single-stage packer, on non-conducting next stage packer, single-stage deblocking power is small, and deblocking effect is good.Currently, each oil-field flooding point
The gradually deblocking mechanism for the gradually deblocking packer that layer job mix tubing string is used is generally pin control, and this packer is
Pin is cut by upper lifting pipe post and realizes that packing element release completes deblocking, the pin that upper lifting pipe post cuts next stage packer is then proceeded to
Nail is so as to realize gradually deblocking function.The problem of having so always during use for many years, if pin is smaller, envelope
It is hampered during device is gone into the well, pin can be cut automatically makes removing seal for packer, in turn results in tubing string failure, leads to not normal point
Layer water filling；In order to ensure that packer is reliable, using the method for increasing pin, this just generates another technical problem, pin again
Shearing force increases, and increases every one-level removing seal for packer power, and this packer is connected on water injection string makes tubing string whole as one
Body, tubing string upper lifting force is whole removing seal for packer power sums, tubing string upper lifting force is gradually increased, and causes deblocking difficult, solves step by step
Disabler is sealed, further, the gradually deblocking mechanism of this packer does not have confined space protection, in underground work, each zero
Part will necessarily get rusty, fouling, cause gradually deblocking mechanism rust extremely, pin will not be cut during upper lifting pipe post, gradually deblocking function
Failure.The gradually deblocking packer interlayer voltage endurance capability of this structure is low, can cut deblocking pin solution when casing pressure is big automatically
Envelope, makes packer be failed with tubing string, had both been not suitable with subdivision of reservoir water filling or had been unsatisfactory for high-pressure water injection well.At present, each oil field layered note
The mode that sets of packer used by water well operation is mostly promoted under piston compression packing element, the central tube of this packer from bottom to top
There is inlet opening in portion, and water is entered in packer by inlet opening when setting promotes the packing element on piston compression excenter tube to complete to set,
After setting, excenter tube and the interior of piston, surface are in the liquid in well, and during upper lifting pipe post, piston and packing element are returned to simultaneously
Original position, packer completes deblocking.Arisen a problem that always during use for many years, because oil field well environment is multiple
Miscellaneous, condition of water quality is poor, and the inner and outer surfaces of exposure excenter tube in a liquid and piston will necessarily get rusty, fouling, and packer
Service life is more than 3 years, the inner and outer surfaces of this excenter tube and piston for resulting in this packer are got rusty, scale problems more
Plus it is serious, during deblocking because piston surfaces externally and internally gets rusty, fouling and cause that original position can not be returned to, while packing element can not be returned to
Original position, so packing element can block motionless, makes packing element be constantly in the envelope state that rises, the friction of packing element and internal surface of sleeve pipe during upper lifting pipe post
Power continues to become big, causes packing element Ka Jing, packer can not be unsealed, during multiple-string packer seperated layer water injection, and upper lifting force, which is equal to, all to be sealed
Every the frictional force sum of device packing element and internal surface of sleeve pipe, if continuing upper lifting pipe post, easily cause the damage of packing element, crush, and take off
Fall within well and pollute, in shallow well seperated layer water injection, after packing element Ka Jing, entire combination tubing string formation plunger, packing
Device proposes to take out of big quantity of fluid pollution well site in well after well head, and in deep-well seperated layer water injection, upper lifting force is crossed ambassador's tubing string and pulled out not
It is dynamic, major accident is easily caused, the potential safety hazard of wellsite operation is added, causes large-scale well workover, operating cost is improved, and make
Into the very big wasting of resources.
The content of the invention
The main object of the present invention can not be normally divided in use to solve existing gradually deblocking packer
The problem of layer water filling and difficult deblocking；
Another object of the present invention is that parts hold in use in order to solve existing gradually deblocking packer
Easily get rusty, fouling and the problem of can not use；
Another object of the present invention is that usually occur in use to solve existing gradually deblocking packer
Packing element Ka Jing, the problem of packer can not be unsealed；
The present invention in order to achieve the above object, note by a kind of environment-friendly type washing well gradually deblocking for solving the above problems and providing
Water packer.
The environment-friendly type washing well water injection packer with step-by-step deblocking that the present invention is provided include central tube, top connection, set one's heart pipe,
Upper overcoat, lock tube, excenter tube, packing element and lower contact, wherein top connection are set on central tube, are set one's heart pipe and are located at top connection with
In inner chamber between heart pipe, set one's heart and be connected between pipe upper end and central tube, upper overcoat, which is set in, sets one's heart on pipe, upper overcoat it is upper
End between top connection with being connected, and lock tube is set in the lower end of overcoat, and jump ring is provided with the inner chamber between lock tube and central tube,
Jump ring is located on clip spring seat, and excenter tube is set on central tube, and the upper end of excenter tube is connected with clip spring seat, and packing element is located at lock tube
Between lower contact, the upper and lower ends of packing element are respectively equipped with glue tube base and lower rubber cylinder seat, and lower contact is connected on central tube.
Set one's heart provided with set and the dummy piston of disconnecting in the cavity between pipe and upper overcoat, wherein before disconnection is set on, putting down
After weighing apparatus piston is arranged on, the table top for the set front end that disconnects is provided with steel ball, locks top connection by steel ball and sets one's heart pipe, upper overcoat
Lower end offers the first inlet opening, is fixedly connected between upper overcoat and clip spring seat provided with fixing pin.
Jump ring is provided with wild card tooth, and the upper end of lock tube is provided with Nei Kaya, and wild card tooth matches with Nei Kaya, wild card tooth with it is interior
Being capable of clamping locking between card tooth.
Provided with piston is set in cavity between lock tube and excenter tube, the lower end that piston is located at clip spring seat is set, work is set
Plug is located on the supporting bable tops of lock tube lower end, and upper glue tube base is located at the lower end of lock tube, and upper glue tube base lower end offers the second feed liquor
Hole.
Flushing valve is provided with cavity between excenter tube and upper glue tube base, the position of flushing valve is entered with upper glue tube base second
The position of fluid apertures is corresponding.
Packing element is provided with spacer ring provided with several between packing element.
Lower rubber cylinder seat between lower contact by closing piece with being fixedly connected, and closing piece is located on snap seat, and the upper end of lower contact is opened
Provided with apopore.
The 3rd inlet opening, the 4th inlet opening and the 5th inlet opening are offered on excenter tube, wherein the 3rd inlet opening is located at outside
The top of heart pipe, the position of the 3rd inlet opening is corresponding with the position for setting piston, the position of the 4th inlet opening and the position of flushing valve
Correspondence is put, the 5th inlet opening is located at the bottom of excenter tube, after packing element is compressed, and the 5th inlet opening can be with upper glue tube base lower end
Second inlet opening connects, on the cavity and lower contact between the second inlet opening, the 5th inlet opening, excenter tube bottom and central tube
The apopore at end is formed as well-flushing passage.
Inlet opening, middle inlet opening and lower inlet opening are offered on central tube, wherein upper inlet opening correspond to disconnect set and
At dummy piston position, the position of middle inlet opening is corresponding with the 3rd feed liquor hole site on excenter tube top, the position of lower inlet opening
It is corresponding with the 4th feed liquor hole site on excenter tube.
Top connection, set one's heart and sealed between pipe, dummy piston, upper overcoat, clip spring seat and lower contact and central tube, upper overcoat with
It is between top connection, between clip spring seat and lock tube, between upper glue tube base and excenter tube and between lower rubber cylinder seat and excenter tube
Sealing.
The operation principle of the present invention：
First the environment-friendly type washing well gradually deblocking packer that provides of the present invention is connected on water injection string, under enter water injection well
Interior, each operating process is as follows：
Set operating process：Pump truck is connected by ground to pressurize into oil pipe, water enters packer central tube through oil pipe
Upper dummy piston is descending while upper inlet opening promotes the set that disconnects up, makes the top connection locked by steel ball and sets one's heart pipe solution
Lock, continues to be forced into water and enters through the 3rd inlet opening on inlet opening in central tube, excenter tube, make to set piston promote lock tube and
Upper glue tube base is descending, and water is through the lower inlet opening on central tube, the 4th inlet opening feed liquor on excenter tube, and flushing valve is descending to be closed
Close, while flushing valve also promotes glue tube base until jump ring wild card tooth is combined realization locking, completion packing element with lock tube Nei Kaya
Compression-expansion, now top connection completes disengagement with setting one's heart pipe, and jump ring completes locking with lock tube, sets operation and completes.
Normal water filling：Water injection pressure produces upward power all the time to the set that disconnects, and the upper surface for the set that disconnects, which is acted against, sets one's heart pipe
Lower surface, downward power is produced to dummy piston all the time, both pressure balances, and central tube is to be threadedly coupled with setting one's heart pipe, so
The position of central tube be also maintained for it is constant, otherwise casing pressure is big, first inlet opening of the water through upper overcoat lower end is by dummy piston
It is pushed into front end face upwards and acts against to set one's heart at pipe lower surface, now dummy piston produces pressure balance with upper overcoat inner face, only
Maintain water injection pressure gradually deblocking mechanism to be just locked always, finally ensure that gradually deblocking mechanism and the peace of setting mechanism
Full property and reliability.
Well-flushing operating process：Pressurizeed through pump truck from sleeve pipe is counter, because packer setting is completed, packing element is compressed downwardly, then
Second inlet opening of upper glue tube base lower end connects with the 5th inlet opening of excenter tube lower end, and water enters through the second inlet opening, the 5th
Cavity, the apopore of lower contact upper end between fluid apertures, excenter tube bottom and central tube flow out into next stage annular space,
Most realize that anti-flushing well is circulated through tubing string bottom afterwards, reach well-flushing purpose.
Unsealing operation process：Stop water filling, the uppermost packer of upper lifting pipe post stress at first, the set that disconnects is up, support
Steel ball disengage, make its top connection and set one's heart pipe unblock, so because gradually deblocking mechanism, clamp-proof mechanism are located during upper lifting pipe post
Do not contacted in closed chamber with the external world, not burn into non-scaling, non-corrosive, top connection then drives overcoat, steel ball, the set that disconnects, balance
The upper surface of piston stroking upward to dummy piston is acted against when setting one's heart pipe lower surface, the frictional force branch of upper overcoat and clip spring seat in packing element
Under support, fixing pin is cut by less power, it is up that drive is set one's heart pipe, central tube, lower contact by gradually deblocking mechanism, now
The closing piece for being in clamp-proof mechanism is disengaged, and lower rubber cylinder seat is unlocked with snap seat, and packing element (obtains fully release downwards by bounce.)
Because gradually deblocking mechanism, clamp-proof mechanism are in closed chamber, gradually deblocking mechanism can be disengaged smoothly during deblocking, and packing element is filled
Divide release, do not damage, lose in well, reach safety and environmental protection requirement, so that the upper lifting power of tubing string is single removing seal for packer power,
So the quantity that tubing string connects packer can be increased, it is ensured that the security reliability of Job Operations.
Beneficial effects of the present invention：
There is the environment-friendly type washing well gradually deblocking packer unique piston that promotes from top to bottom to compress setting for packing element
Mode, its setting mechanism is located at packing element upper end, is placed in using piston is set in the cavity between excenter tube and lock tube, flushing valve is put
In in the cavity of excenter tube middle-end and upper glue tube base lower end, because there is table top lock tube lower end when setting, set piston and promote lock tube
Descending, lock tube promotes upper glue tube base descending, while flushing valve also promotes glue tube base descending, comes downwards in the outer tooth of jump ring and lock tube
Tooth is locked, and makes packing element compression-expansion, ring set is insulated, and packer completes to set, the unique promotion piston from top to bottom of packer
That compresses packing element sets mode, and its purpose makes to set machine for the realization of the closed clamp-proof mechanism function of packing element lower end
Structure and solution sealing mechanism no longer simultaneous, and then make unique novel, the simple to operate and job order one of setting mechanism design, improve and set
The security reliability of mechanism；
Pressure balance mechanism is placed in the cavity between central tube and upper overcoat using dummy piston, and oil pipe water filling is set
When, disconnected the up supreme heart pipe lower surface of set, pins top connection and sets one's heart pipe, and the steel ball of central tube is disengaged, and dummy piston is descending
At supreme overcoat inner face, because of two-way pressure balance, cause central tube position to remain stationary as, protect gradually deblocking mechanism to make its nothing
Method is unsealed；Set after the completion of operation, such as casing pressure is big, when pressure is acted on packing element, easily cause removing seal for packer failure, this
When water then dummy piston is pushed up from upper overcoat lower end inlet opening to setting one's heart at pipe lower surface, dummy piston is inner with upper overcoat
Face forms pressure balance, has both protected gradually deblocking mechanism and setting mechanism, while the pressure acted on packing element is balanced,
Packer is set not unseal, because the safety that greatly ensure that packer work with independent pressure balance mechanism can
By property, while adapting to high-pressure water injection well；
Gradually deblocking mechanism is connected through a screw thread using top connection with upper outer set upper side, and there are through hole, center in top connection lower end
Pipe upper end is connected through a screw thread with setting one's heart pipe upper end, and setting one's heart has semi-circular shape groove outside pipe, and disconnection, which is placed on, sets one's heart pipe and upper outer
In cavity between set, and by disconnection set upper side mesa supports steel ball, locking top connection is with setting one's heart pipe, because above-mentioned part is recessed
Sealing ring is filled with groove, solution sealing mechanism is in air-tight state, therefore constitutes closed gradually deblocking mechanism, not with the external world
Contact, not burn into non-scaling, non-corrosive.Due to being pressurizeed in oil pipe, water enters packer through inlet opening on central tube, promote by
Disconnection set is moved up in level solution sealing mechanism, causes the steel ball for pinning top connection and central tube to disengage, gradually deblocking mechanism section during deblocking
Move up, do not drive whole tubing string, removing seal for packer can independent stress, the upper lifting force of tubing string is single removing seal for packer power, greatly
The upper lifting power of overall tubing string is reduced greatly, because gradually deblocking mechanism is in closed chamber, therefore is pacified during the removing seal for packer
It is complete reliable, it is achieved thereby that the gradually deblocking of multiple-string packer.The quantity increase of water injection string connection packer, upper lifting pipe post power
Reduction, unsealing operation is simple and structure is novel, and adapts to subdivision injection, high pressure well.So the environment-friendly type washing well is step by step
Deblocking packer connects quantity, upper lifting pipe post with safe and reliable under subdivision of reservoir water filling, condition of high voltage on increase water injection string
Power is reduced, the characteristics of unsealing operation is simply and structure is novel；
Clamp-proof mechanism is connected through a screw thread using lower contact with central tube lower end, and there are table top and apopore in lower contact upper end,
Excenter tube lower end is connected through a screw thread with snap seat upper end, and there is hole snap seat lower end, and lower rubber cylinder seating is in snap seat outer end, lower glue
Cylinder base lower end is fluted, and the closing piece is placed in the lower stomidium of snap seat and lower rubber cylinder seat lower end is recessed by top connection upper end mesa supports
In groove, locking snap seat and lower rubber cylinder seat, due to being filled with sealing ring in above-mentioned component notches, clamp-proof mechanism is in upper lifting pipe post
Air-tight state is in before deblocking, is not contacted with the external world, not burn into non-scaling, non-corrosive.In lower rubber cylinder seat lower surface and lower contact
Left between anticollision shoulder hanging type deblocking away from, coordinate gradually deblocking mechanism during deblocking, upper lifting pipe post, central tube with lower contact
OK, closing piece loses the support of lower contact upper table surface, and the closing piece of locking snap seat and lower rubber cylinder seat is disengaged, and packing element discharges downwards, completes
Unsealing operation, because clamp-proof mechanism is in closed chamber, packing element can fully be discharged during deblocking, solve current oil-field flooding
Packing element is damaged, crushed in well, and is come off in the technical problem in pollution well site in well, so that safety and environmental protection requirement is reached, therefore it is real
Existing packing element anti-sticking, substantially increases the security reliability of removing seal for packer.So the environment-friendly type washing well gradually deblocking
The characteristics of packer clamp-proof mechanism has novel simple to operate, structure, safety and environmental protection.
Brief description of the drawings
Fig. 1 is overall structure figure of the present invention.
1st, central tube 2, top connection 3, set one's heart pipe 4, upper overcoat 5, lock tube
6th, excenter tube 7, packing element 8, lower contact 9, jump ring 10, clip spring seat
11st, upper glue tube base 12, lower rubber cylinder seat 20, disconnection set 21, dummy piston
22nd, steel ball 23, the first inlet opening 24, fixing pin 25, set piston
26th, the second inlet opening 27, flushing valve 28, spacer ring 29, closing piece
30th, snap seat 31, apopore 32, the 3rd inlet opening 33, the 4th inlet opening
35th, the 5th inlet opening 36, upper inlet opening 37, middle inlet opening 38, lower inlet opening.
Embodiment
Refer to shown in Fig. 1：
The environment-friendly type washing well water injection packer with step-by-step deblocking that the present invention is provided includes central tube 1, top connection 2, set one's heart
Pipe 3, upper overcoat 4, lock tube 5, excenter tube 6, packing element 7 and lower contact 8, wherein top connection 2 are set on central tube 1, are set one's heart pipe 3 and are set
In inner chamber between top connection 2 and central tube 1, bolt between the upper end of pipe 3 and central tube 1 is set one's heart, upper overcoat 4 is set in
On heart pipe 3, bolt between the upper end of upper overcoat 4 and top connection 2, lock tube 5 is set in the lower end of overcoat 4, lock tube 5 and center
Jump ring 9 is provided with inner chamber between pipe 1, jump ring 9 is located on clip spring seat 10, and excenter tube 6 is set on central tube 1, excenter tube 6
Upper end and the bolt of clip spring seat 10, packing element 7 are located between lock tube 5 and lower contact 8, and the upper and lower ends of packing element 7 are respectively equipped with gluing
Cylinder base 11 and lower rubber cylinder seat 12, lower contact 8 is screwed onto on central tube 1.
Set one's heart provided with set 20 and the dummy piston 21 of disconnecting in the cavity between pipe 3 and upper overcoat 4, wherein the set 20 that disconnects is set
Preceding, after dummy piston 21 is arranged on, the table top for 20 front ends of set that disconnect is provided with steel ball 22, passes through steel ball 22 and locks top connection 2
With set one's heart pipe 3, the lower end of upper overcoat 4 offers the first inlet opening 23, between upper overcoat 4 and clip spring seat 10 be provided with fixing pin 24
It is fixedly connected.
Jump ring 9 is provided with wild card tooth, and the upper end of lock tube 5 is provided with Nei Kaya, and wild card tooth matches with Nei Kaya, wild card tooth and
Being capable of clamping locking between Nei Kaya.
Provided with piston 25 is set in cavity between lock tube 5 and excenter tube 6, set piston 25 and be located under clip spring seat 10
End, sets piston 25 and is located on the supporting bable tops of the lower end of lock tube 5, upper glue tube base 11 is located under the lower end of lock tube 5, upper glue tube base 11
End offers the second inlet opening 26.
Flushing valve 27, the position of flushing valve 27 and upper glue tube base are provided with cavity between excenter tube 6 and upper glue tube base 11
The position of second inlet opening 26 is corresponding on 11.
Packing element 7, which is provided between three, packing element 7, is provided with spacer ring 28.
It is fixedly connected between lower rubber cylinder seat 12 and lower contact 8 by closing piece 29, closing piece 29 is located on snap seat 30, lower contact
8 upper end offers apopore 31.
The 3rd inlet opening 32, the 4th inlet opening 33 and the 5th inlet opening 35 are offered on excenter tube 6, wherein the 3rd inlet opening
32 are located at the top of excenter tube 6, and the position of the 3rd inlet opening 32 is corresponding with the position for setting piston 25, the position of the 4th inlet opening 33
Put corresponding with the position of flushing valve 27, the 5th inlet opening 35 is located at the bottom of excenter tube 6, after packing element 7 is compressed, the 5th inlet opening
35 can connect with the second inlet opening 26 of the upper lower end of glue tube base 11, the second inlet opening 26, the 5th inlet opening 35, excenter tube 6
The apopore 31 of cavity and the upper end of lower contact 8 between bottom and central tube 1 is formed as well-flushing passage.
Inlet opening 36, middle inlet opening 37 and lower inlet opening 38 are offered on central tube 1, wherein upper inlet opening 36 corresponds to
Disconnect and cover at 20 and the position of dummy piston 21, the position of middle inlet opening 37 and the position pair of the 3rd inlet opening 32 on the top of excenter tube 6
Should, the position of lower inlet opening 38 is corresponding with the position of the 4th inlet opening 33 on excenter tube 6.
Top connection 2, set one's heart it is close between pipe 3, dummy piston 21, upper overcoat 4, clip spring seat 10 and lower contact 8 and central tube 1
Envelope, between upper overcoat 4 and top connection 2, between clip spring seat 10 and lock tube 5, between upper glue tube base 11 and excenter tube 6 and lower rubber cylinder
Sealing is between seat 12 and excenter tube 6.
The operation principle of the present invention：
First the washing well gradually deblocking packer that provides of the present invention is connected on water injection string, under enter in water injection well, respectively
Operating process is as follows：
Set operating process：Pump truck is connected by ground to pressurize into oil pipe, water enters packer central tube 1 through oil pipe
Dummy piston 21 is descending while upper inlet opening 36 promotes the set 20 that disconnects up, make the top connection 2 that is locked by steel ball 22 with it is upper
Heart pipe 3 is unlocked, and is continued to be forced into water and is entered through the 3rd inlet opening 32 on inlet opening 37 in central tube 1, excenter tube 6, makes to set
The promotion lock tube 5 of piston 25 and upper glue tube base 11 are descending, and water is through the lower inlet opening 38 on central tube 1, the 4th feed liquor on excenter tube 6
The feed liquor of hole 33, flushing valve 27 is descending to be closed, while flushing valve 27 also promotes glue tube base 11 until the wild card tooth of jump ring 9 and lock tube
5 Nei Kaya be combined realization locking, complete the compression-expansion of packing element 7, now top connection 2 and set one's heart pipe 3 complete disengagement, jump ring 9 with
Lock tube 5 completes locking, sets operation and completes.
Normal water filling：Water injection pressure produces upward power all the time to the set 20 that disconnects, and the upper surface for the set 20 that disconnects is acted against
The lower surface of heart pipe 3, downward power is produced to dummy piston 21 all the time, both pressure balances, and central tube 1 is with setting one's heart pipe 3 for screw thread
Connection, thus the position of central tube 1 be also maintained for it is constant, otherwise casing pressure is big, first inlet opening of the water through the upper lower end of overcoat 4
Dummy piston 21 is pushed into front end face by 23 upwards to be acted against and sets one's heart at the lower surface of pipe 3, and now dummy piston 21 and upper overcoat 4 are inner
Face produces pressure balance, is just locked always as long as maintaining water injection pressure gradually deblocking mechanism, finally ensure that gradually deblocking
The safety and reliability of mechanism and setting mechanism.
Well-flushing operating process：Pressurizeed through pump truck from sleeve pipe is counter, because packer setting is completed, packing element 7 is compressed downwardly, then
The second inlet opening 26 and the 5th inlet opening 35 of the lower end of excenter tube 6 of the upper lower end of glue tube base 11 connect, and water is through the second inlet opening
26th, between the 5th inlet opening 35, the bottom of excenter tube 6 and central tube 1 cavity, the outflow of apopore 31 of the upper end of lower contact 8 are gone forward side by side
Enter next stage annular space, most realize that anti-flushing well is circulated through tubing string bottom afterwards, reach well-flushing purpose.
Unsealing operation process：Stop water filling, the uppermost packer of upper lifting pipe post stress at first, the set 20 that disconnects is up, branch
The steel ball 22 of support is disengaged, and its top connection 2 is unlocked with setting one's heart pipe 3, so due to gradually deblocking mechanism, anti-card machine during upper lifting pipe post
Structure is in closed chamber and not contacted with the external world, not burn into non-scaling, non-corrosive, top connection 2 then drive overcoat 4, steel ball 22,
Disconnect set 20, dummy piston 21 goes upward to the upper surface of dummy piston 21 and acted against when setting one's heart 3 lower surface of pipe, upper overcoat 4 and card
Spring abutment 10 is cut fixing pin 24 by less power, drive is set one's heart by gradually deblocking mechanism under the frictional force support of packing element 7
Pipe 3, central tube 1, lower contact 8 are up, and the closing piece 29 for being now in clamp-proof mechanism is disengaged, and lower rubber cylinder seat 12 is solved with snap seat 30
Lock, packing element 7 obtains fully release downwards by bounce.Because gradually deblocking mechanism, clamp-proof mechanism are in closed chamber, during deblocking
Gradually deblocking mechanism can be disengaged smoothly, and packing element 7 is fully discharged, and do not damaged, lost in well, reach safety and environmental protection requirement, from
And the upper lifting power of tubing string is single removing seal for packer power, so the quantity that tubing string connects packer can be increased, it is ensured that operation
The security reliability of operation.
Claims (7)
1. a kind of environment-friendly type washing well water injection packer with step-by-step deblocking, includes central tube, top connection, sets one's heart pipe, upper overcoat, lock
Set, excenter tube, packing element and lower contact, wherein top connection are set on central tube, are set one's heart pipe and are located between top connection and central tube
Inner chamber in, set one's heart and be connected between pipe upper end and central tube, upper overcoat, which is set in, sets one's heart on pipe, and the upper end of upper overcoat is with above connecing
It is connected between head, lock tube is set in the lower end of overcoat, jump ring is provided with the inner chamber between lock tube and central tube, jump ring is located at
On clip spring seat, excenter tube is set on central tube, and the upper end of excenter tube is connected with clip spring seat, and packing element is located at lock tube and lower contact
Between, the upper and lower ends of packing element are respectively equipped with glue tube base and lower rubber cylinder seat, and lower contact is connected on central tube, and its feature exists
In：Provided with set and the dummy piston of disconnecting in the described cavity set one's heart between pipe and upper overcoat, wherein before disconnection is set on, putting down
After weighing apparatus piston is arranged on, the table top for the set front end that disconnects is provided with steel ball, locks top connection by steel ball and sets one's heart pipe, upper overcoat
Lower end offers the first inlet opening, is fixedly connected between upper overcoat and clip spring seat provided with fixing pin, on described jump ring
Provided with wild card tooth, the upper end of lock tube is provided with Nei Kaya, and wild card tooth matches with Nei Kaya, can blocked between wild card tooth and Nei Kaya
Tightly lock, described top connection, set one's heart and sealed between pipe, dummy piston, upper overcoat, clip spring seat and lower contact and central tube, on
Between overcoat and top connection, between clip spring seat and lock tube, between upper glue tube base and excenter tube and lower rubber cylinder seat and excenter tube it
Between be sealing.
2. environment-friendly type washing well water injection packer with step-by-step deblocking according to claim 1, it is characterised in that：Described lock tube
Provided with piston is set in cavity between excenter tube, the lower end that piston is located at clip spring seat is set, piston is set and is located under lock tube
On the supporting bable tops at end, upper glue tube base is located at the lower end of lock tube, and upper glue tube base lower end offers the second inlet opening.
3. environment-friendly type washing well water injection packer with step-by-step deblocking according to claim 1, it is characterised in that：Described unfaithful intention
Flushing valve, the position of flushing valve and the position phase of the second inlet opening on upper glue tube base are provided with cavity between pipe and upper glue tube base
Should.
4. environment-friendly type washing well water injection packer with step-by-step deblocking according to claim 1, it is characterised in that：Described packing element
Provided with several, spacer ring is provided between packing element.
5. environment-friendly type washing well water injection packer with step-by-step deblocking according to claim 1, it is characterised in that：Described lower glue
It is fixedly connected between cylinder base and lower contact by closing piece, closing piece is located on snap seat, and the upper end of lower contact offers apopore.
6. environment-friendly type washing well water injection packer with step-by-step deblocking according to claim 1, it is characterised in that：Described unfaithful intention
The 3rd inlet opening, the 4th inlet opening and the 5th inlet opening are offered on pipe, wherein the 3rd inlet opening is located at the top of excenter tube, the
The position of three inlet openings is corresponding with the position for setting piston, and the position of the 4th inlet opening is corresponding with the position of flushing valve, and the 5th enters
Fluid apertures is located at the bottom of excenter tube, after packing element is compressed, the second inlet opening phase that the 5th inlet opening can be with upper glue tube base lower end
Insertion, the apopore shape of cavity and lower contact upper end between the second inlet opening, the 5th inlet opening, excenter tube bottom and central tube
As well-flushing passage.
7. environment-friendly type washing well water injection packer with step-by-step deblocking according to claim 1, it is characterised in that：Described center
Inlet opening, middle inlet opening and lower inlet opening are offered on pipe, wherein upper inlet opening corresponds to disconnect set and balance piston position
Place, the position of middle inlet opening is corresponding with the 3rd feed liquor hole site on excenter tube top, on the position and excenter tube of lower inlet opening
4th feed liquor hole site correspondence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510250962.7A CN104806194B (en) | 2015-05-18 | 2015-05-18 | Environment-friendly type washing well water injection packer with step-by-step deblocking |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510250962.7A CN104806194B (en) | 2015-05-18 | 2015-05-18 | Environment-friendly type washing well water injection packer with step-by-step deblocking |
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| CN104806194A CN104806194A (en) | 2015-07-29 |
| CN104806194B true CN104806194B (en) | 2017-07-18 |
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| CN201510250962.7A Active CN104806194B (en) | 2015-05-18 | 2015-05-18 | Environment-friendly type washing well water injection packer with step-by-step deblocking |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106437605B (en) * | 2016-09-06 | 2018-12-14 | 中国石油化工股份有限公司 | A kind of packer |
| CN109306854A (en) * | 2017-07-26 | 2019-02-05 | 中国石油天然气股份有限公司 | Packer capable of being unsealed step by step and separate-layer water injection string |
| CN107724993B (en) * | 2017-11-27 | 2019-05-28 | 刘玉友 | It is a kind of can desealed water-swelling packer application method |
| CN108412452B (en) * | 2018-03-15 | 2024-04-02 | 陕西航天德林科技集团有限公司 | Packer and application method thereof |
| CN109577905B (en) * | 2018-11-06 | 2020-11-20 | 山东大东联石油设备有限公司 | Compression packer capable of repeatedly setting and unsetting |
| CN110331958B (en) * | 2019-06-12 | 2021-08-13 | 中国石油化工股份有限公司 | Water injection packer |
| CN114183090B (en) * | 2020-09-14 | 2024-03-26 | 中国石油天然气股份有限公司 | Water injection packer |
| CN114183091B (en) * | 2020-09-15 | 2024-08-13 | 中国石油化工股份有限公司 | Balanced type step-by-step deblocking packer and method |
| CN111927383B (en) * | 2020-09-17 | 2020-12-11 | 东营市正能石油科技有限公司 | Packer for water injection well of oil field |
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| CN104806194A (en) | 2015-07-29 |
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Address after: 130012 floor 3, building B, No. 399, Yuguang street, high tech Industrial Development Zone, Changchun City, Jilin Province Patentee after: ZHONGYOU ZHIKE (JILIN) TECHNOLOGY EQUIPMENT Co.,Ltd. Address before: 130033 zero kilometer of Changle highway, Nanguan District, Changchun City, Jilin Province Patentee before: CHANGCHUN HENGDA PETROLEUM MACHINERY CO.,LTD. |
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