CN107893641B - A kind of underground work metal packer and method - Google Patents
A kind of underground work metal packer and method Download PDFInfo
- Publication number
- CN107893641B CN107893641B CN201711067630.0A CN201711067630A CN107893641B CN 107893641 B CN107893641 B CN 107893641B CN 201711067630 A CN201711067630 A CN 201711067630A CN 107893641 B CN107893641 B CN 107893641B
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- seal operation
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/126—Packers; Plugs with fluid-pressure-operated elastic cup or skirt
Abstract
The present invention relates to a kind of underground work metal packer and methods.Its technical solution is: the outer wall connection sealing steel bushing of top connection, upper centrum sealing piston are mounted on the central tube and seal the annular space between steel bushing, connected on the outside of the middle and lower part of upper centrum sealing piston by setting shear pin and snap set, install snap in snap set；The bottom of the upper centrum sealing piston is conical head, it is engaged by conical head and metal sealing working assemblies, the lower part of the metal sealing working assemblies is engaged with hypocentrum, and the inner wall of hypocentrum passes through hypocentrum composite sealing ring and basepipe seal.Beneficial effect is: reliable performance of the present invention, it is resistant to 450 degree or more of high temperature, due to using the stepped construction of open type, namely use metal sealing working assemblies, overcome the small problem of the expansion amplitude of the prior art, also overcome the packer of existing rubber material or metal in conjunction with rubber material there are the problem of.
Description
Technical field
The present invention relates to a kind of underground work device and method, in particular to a kind of underground work metal packer and side
Method.
Background technique
In oil-gas field development field, packer is to implement oil production by layer, seperated layer water injection, separate stratum fracfturing, acidification or mechanical card
The stifled Important Components for waiting undergrounds injection-production technology, packer is specifically referred to elastic sealing elements, and insulates various rulers whereby
Annular space between writing brush column and wellbore and between tubing string, and completely cut off payzone, (note) liquid, the underground of protection sleeve pipe are produced with control
Tool.Packer is used to be layered in petroleum production engineering, and design has oil channel on packer, and when setting, piston bush uplink is recovered the oil
Channel is opened;After setting, upper stressor layer is acted on dummy piston, pushes up packing element, makes to unseal pin from shearing force;Solution
Feng Shi cuts deblocking pin by the frictional force of packing element and casing, and piston bush downlink closes oil channel.
Most packer sealing cylinder is generally prepared by elastic composite, can be divided into pressure type, self-sealing and
It is compound etc..Compression packer in pressure type is one kind the most universal, such as Y341, K344, Y211 and Y221 model
Packer, be mainly made of upper lower contact, packing element sealing mechanism, setting mechanism, its seal operation principle is: under packer
After well to predetermined position, it is engaged in the slips of setting mechanism on internal surface of sleeve pipe and forms support, simultaneously
Under the gravity of tubing string, top connection pushes packing element compression, so that the diameter of packing element is become larger, to insulate oil sets annular space.
The sealing being conformed into oil sets annular space is squeezed by both ends to packing element, but when pressure is excessive, the decrement of packing element
It is bigger, easily it is damaged to.And the applying working condition of packing element is extremely complex and harsh: high pressure, is in oil at high temperature
Erosion in medium while also by hydrogen sulfide, steam, acid etc..In this environment, elastic composite will occur
Phenomena such as oil swell, aging, excessive crosslinking, causes the hardness of material to rise, intensity decline, flexibility decrease, cracking resistance mouth growth energy
Power is significantly reduced.Therefore it is easy just to generate early damage when being intended for single use, sealing is caused to fail.In oil-gas field development,
The mining depth of oil/gas well is deeper and deeper, with the increase of oil gas well depth, the operating ambient temperature of packing element, pressure
Increase therewith, chemical corrosivity is also stronger, therefore, just proposes above-mentioned the higher of bad working environments of adaptation to the packing element of packer and wants
It asks.
China Patent Publication No. CNI 356452A, patent name are " packer for high-temp thermal recovery ", and it discloses a kind of gold
Belong to forced seal structure, its reliable performance is resistant to 450 DEG C of high temperature, but since what is sealed is that swollen alliteration opens metal wave
Line pipe, make its be close to internal surface of sleeve pipe reach sealing function, and before metal bellows distending be in rugosity, there are the problem of
Be: tube wall can not be made thick, and the diameter of swollen head must be close to the casing inner diameter sealed, therefore expansion amplitude is small, be not suitable for
Inner wall coarse, the casing of poor dimensional precision.
China Patent Publication No. CN103015943A, patent name be " a kind of metal sealing mechanism of packer ", by cylinder,
Swollen head and compression spring composition.One section of cylinder inner hole is formed with two groups of quantity phases on the external cylindrical surface of cylinder in round platform hole
Together, it is parallel to the circumferentially equally distributed gap axis, bottom surface extends upwardly from the round platform hole of cylinder bottom in one group of gap；
Each gap in another group of gap is all located at the center in adjacent two gap of previous group, and under the round platform hole away from cylinder
Bottom surface certain distance rises, and extends to the other end of cylinder.Swollen head is the round estrade with centre bore.In the inner hole of cylinder, if
It is equipped with compression spring.Cooperated by the Wedged of swollen head and cylinder, so that the outer circle column diameter of metallic cylinder is swollen, to oil jacket annulus
Play the role of secured, strict packing.Sealing mechanism uses metal material, and heatproof, pressure resistance and corrosion resistance are all significant
More than the packing element sealing on common packer, it is particularly suitable for high temperature, high-pressure oil-gas well.But its problem of still having, is: right
The requirement of cylinder is very high, and the cooperation of cylinder and swollen head be easy to cause because there is junk can not clamping the problem of, in turn
The problem of cannot achieve packing is caused, is that expansion amplitude is small there are one problem, it is difficult to meet site requirement.
China Patent Publication No. CN206299367U, patent name be " a kind of metal sealing packer ", including top connection,
Gauge cylinder, expansion tube and lower contact；The upper and lower ends of the expansion tube are connected with top connection and lower contact respectively；The expansion
Pipe is formed by being located at the heavy wall section at middle part and being symmetricly set on two thin segments of heavy wall section or more two sides, heavy wall section and thin-walled
Section is an integral structure, and the wall thickness of heavy wall section is greater than thin segment wall thickness；There are two the gauge cylinder is total, it is slidably mounted on institute respectively
State two thin segments of expansion tube；Auxiliary rubber sealing ring is additionally provided in the heavy wall section of the expansion tube.Metal sealing envelope
Every device with expansion of metal seal based on, supplemented by rubber seal, seal section expansion rate is high, and it is small that tubing string enters well risk, pressure resistance after setting
Poor ability is strong, Sealing period is long, and high temperature resistant property is good, applied widely, can reduce operating cost, reduces operating risk.But
It the problem is that: due to being sealed using metal bonding rubber, so, still deposited without thoroughly solving rubber seal
The problem of.
Summary of the invention
The purpose of the present invention is to drawbacks described above of the existing technology, a kind of underground work is provided and is insulated with metal
Device and method not only solve high temperature resistant, corrosion-resistant and pressure-resistant problem, and avoid there is junk and can not clamping ask
Topic.
A kind of underground work metal packer that the present invention mentions, technical solution is: including top connection (1), sealing
Steel ring (2), sealing steel bushing (3), combined bidirectional sealing ring (4), upper centrum sealing piston (5), snap set (6), snap (7),
Upper centrum composite sealing ring (8), metal sealing working assemblies (9), hypocentrum (10), hypocentrum composite sealing ring (11), solution
Seal shear pin (12), locking nail (13), lower contact (14), central tube (15), setting shear pin (16), the upper end of the central tube (15)
It is connect with top connection (1), outer wall connection sealing steel bushing (3) of top connection (1), upper centrum sealing piston (5) is mounted in described
The middle and lower part outside of annular space between heart pipe (15) and sealing steel bushing (3), upper centrum sealing piston (5) passes through setting shear pin (16)
It is connect with snap set (6), installs snap (7) in snap set (6)；The bottom of the upper centrum sealing piston (5) is conical head, is led to
It crosses conical head to be engaged with metal sealing working assemblies (9), the lower part of the metal sealing working assemblies (9) and lower vertebra
Body (10) is engaged, and the inner wall of hypocentrum (10) is sealed by hypocentrum composite sealing ring (11) and central tube (15), and
The outer wall of hypocentrum (10) is equipped with deblocking shear pin (12) and locking nail (13), hypocentrum (10) pass through locking nail (13) and screw thread and
Lower contact (14) connection is connect by deblocking shear pin (12) with central tube (15).
Preferably, above-mentioned metal sealing working assemblies (9) include three groups or three groups or more of opening seal operation ring,
The side of opening seal operation ring is equipped with protrusion, and the other side is equipped with groove, to realize synchronizing moving.
Preferably, above-mentioned metal sealing working assemblies (9) include the seal operation ring that is open made of nine groups of metals,
In, the outer wall section of first group of opening seal operation ring is pyramidal structure, is equipped in the downside of first group of opening seal operation ring
The outer wall section of first connection bump, second group of opening seal operation ring is right-angled trapezium, and the upper surface of right-angled trapezium is equipped with
Second connecting groove cooperates with the connection bump of first group of opening seal operation ring, and the lower surface of right-angled trapezium is equipped with second and connects
Connect protrusion, the be open outer wall section of seal operation ring of third group is the ring structure with unfilled corner, and to set third connection recessed for upper surface
Slot, lower surface are equipped with third connection bump；
Standard is respectively adopted in 4th opening seal operation ring, the 5th opening seal operation ring, the 6th opening seal operation ring
Annulus；
7th opening seal operation ring is identical as the third opening structure of seal operation ring, and installation direction is opposite；8th opens
Mouth seal operation ring is identical as the second opening structure of seal operation ring, and installation direction is opposite；9th opening seal operation ring with
The structure of first opening seal operation ring is identical, and installation direction is opposite.
Preferably, above-mentioned third group opening seal operation ring, the 4th opening seal operation ring, the 5th opening seal operation
The internal diameter of ring, the 6th opening seal operation ring and the opening seal operation ring of seven is identical；Second group of opening seal operation ring and
The internal diameter of 8th opening seal operation ring is identical, and is greater than the internal diameter of the 4th opening seal operation ring；First group of opening is close
It is identical as the 9th opening internal diameter of seal operation ring to seal building ring, and is greater than the internal diameter of second group of opening seal operation ring.
Preferably, nine groups of opening seal operation rings are made of becket.
Preferably, the upper end of above-mentioned snap set (6) is connect with sealing steel bushing (3), and the snap (7) in snap set (6) is set
There is gingival cyst of mucous gland in the newborn step, is cooperated by the gingival cyst of mucous gland in the newborn line of gingival cyst of mucous gland in the newborn step and upper centrum sealing piston (5) outer wall, make centrum sealing piston
(5) it is fixed on corresponding position.
Preferably, deblocking shear pin (12) is equipped between above-mentioned central tube (15) and hypocentrum (10), lower contact (14) is under
It is equipped with locking nail (13) between centrum (10), and is designed as left-hand thread between the central tube (15) and lower contact (14), passes through rotation
Turn central tube (15), deblocking shear pin (12) is cut, simultaneously because lower contact (14) is equipped with locking nail (13), realizes central tube
(15) rotation, and then metal sealing working assemblies (9) are shunk, snap (7) return, upper centrum sealing piston (5) is upwards
Mobile, final metal sealing working assemblies (9) retract in situ.
Preferably, the shearing force of above-mentioned locking nail (13) is greater than the shearing force of deblocking shear pin (12).
Preferably, the taper of above-mentioned hypocentrum (10) is less than the taper of the lower vertebra head of upper centrum sealing piston (5) bottom.
The bottom interior wall of the hypocentrum (10) is equipped with trapezoidal left-hand thread, is connected by trapezoidal left-hand thread and the outer wall of central tube (15)
It connects, when rotating forward central tube, deblocking shear pin (12) is cut, and hypocentrum (10) is driven to rotate, since hypocentrum (10) connects under
Locking nail (13), hypocentrum (10) and lower contact synchronous rotary are installed between head and are moved down, metal sealing work combination
Part (9) and then retraction.
A kind of application method for underground work metal packer that the present invention mentions, it is characterized in that the following steps are included:
One, central tube (15) is mounted between upper and lower connector, and connects upper by assembling underground work metal packer
Head (1) external screw thread connection sealing steel bushing (3) is installed centrum sealing piston (5) in sealing steel bushing (3), and is cut by setting
Nail (16) is connected on the snap set (6) of sealing steel bushing (3) bottom；Metal sealing working group is equipped at the middle part of central tube (15)
Component (9), upside and upper centrum sealing piston (5) cooperate, and downside and hypocentrum (10) cooperate, after the completion under lower going-into-well wait seal
Every position；
Two, it when setting, is suppressed by wellhead assembly, highly pressurised liquid enters sealing steel bushing (3) in by inlet opening (17)
Annular space between heart pipe (15), centrum sealing piston (5) will unseal shear pin (12) and cut in promotion, and move down, due under
The taper of centrum (10) is less than the taper of the lower vertebra head of upper centrum sealing piston (5) bottom, so pushing metal sealing working group
Component (9) is displaced outwardly and fits closely with casing wall, at this point, the outer wall due to upper centrum sealing piston (5) is equipped with gingival cyst of mucous gland in the newborn line,
Cooperate latched position with the gingival cyst of mucous gland in the newborn step of snap (7), realizes packing；
Three, it when unsealing, is rotated by wellhead assembly, since the shearing force of locking nail (13) is greater than cutting for deblocking shear pin (12)
Shear force, deblocking shear pin (12) are cut, and central tube (15) realizes rotation, anti-due to being installed between hypocentrum (10) and lower contact
Song Ding (13), hypocentrum (10) and lower contact synchronous rotary simultaneously move down, so that metal sealing working assemblies (9) be made to loosen
It moves down, and then shrinks metal sealing working assemblies (9), in this way, metal sealing working assemblies (9) retract in situ, realization
The solution of device, which is sealed up, to be mentioned.
The beneficial effects of the present invention are: reliable performance of the present invention, is resistant to 450 degree or more of high temperature, due to using opening
The stepped construction of formula, that is, metal sealing working assemblies are used, the small problem of the expansion amplitude of the prior art is overcome,
Overcome the packer of existing rubber material or metal in conjunction with rubber material there are the problem of, pass through upper centrum sealing live
Plug moves down, and pushes and moves outside metal sealing working assemblies, real until being bonded closely with casing wall, then by snap latched position
Now insulate；When deblocking, by the rotation of central tube, hypocentrum and lower contact is driven to move down, keeps metal sealing working assemblies loose
Dynamic return, until being fully retracted, to above mentioning entire metal packer to pithead position；
In addition, due to the structure novel of the opening seal operation ring design in metal sealing working assemblies and ingenious, it can
It extends out or shrinks while multiple groups opening seal operation ring to realize, and the internal diameter for the seal operation ring that is open is different, realizes
With the perfect cooperation for extending out and shrinking, when setting, sealing is fully achieved, when deblocking can be withdrawn to realize all-metal completely
Packing, meets the requirement of the deep-well and heavy oil wells in oil exploitation；And it avoids the prior art and junk occurs and can not block
Tight problem；
The present invention is by using metal sealing working assemblies made of all-metal and upper centrum composite sealing ring 8 and lower vertebra
Bluk recombination sealing ring 11 and ring gasket 2, whole device all uses metal parts, can overcome existing rubber packer
Defect, certainly, in terms of high temperature resistant and pressure, also superior to the packer of rubber and metal bonding.
Detailed description of the invention
Attached drawing 1 is structural schematic diagram of the invention；
Attached drawing 2 is the structural schematic diagram when present invention realizes packing；
Attached drawing 3 is that the part of metal sealing working assemblies is scattered schematic diagram；
In upper figure: top connection 1, ring gasket 2, sealing steel bushing 3, combined bidirectional sealing ring 4, upper centrum sealing piston 5,
Snap covers 6, snap 7, upper centrum composite sealing ring 8, metal sealing working assemblies 9, hypocentrum 10, hypocentrum composite sealing ring
11, shear pin 12, locking nail 13, lower contact 14, central tube 15, setting shear pin 16, inlet opening 17 are unsealed.
Specific embodiment
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
Embodiment 1, a kind of underground work metal packer that the present invention mentions, technical solution is: including top connection
1, ring gasket 2, sealing steel bushing 3, combined bidirectional sealing ring 4, upper centrum sealing piston 5, snap cover 6, snap 7, upper centrum
Composite sealing ring 8, metal sealing working assemblies 9, hypocentrum 10, hypocentrum composite sealing ring 11, deblocking shear pin 12, locking nail
13, the upper end of lower contact 14, central tube 15, setting shear pin 16, the central tube 15 is connect with top connection 1, the outer wall of top connection 1
Connection sealing steel bushing 3, upper centrum sealing piston 5 are mounted on the central tube 15 and seal the annular space between steel bushing 3, and upper centrum is close
It seals on the outside of the middle and lower part of piston 5 and is connect by setting shear pin 16 with snap set 6, install snap 7 in snap set 6；The upper centrum
The bottom of sealing piston 5 is conical head, is engaged by conical head and metal sealing working assemblies 9, the metal sealing
The lower part of working assemblies 9 is engaged with hypocentrum 10, and the inner wall of hypocentrum 10 is by hypocentrum composite sealing ring 11 in
Heart pipe 15 seals, and is equipped with deblocking shear pin 12 and locking nail 13 in the outer wall of hypocentrum 10, and hypocentrum 10 passes through 13 Hes of locking nail
Screw thread is connect with lower contact 14, is connect by deblocking shear pin 12 with central tube 15.
Referring to attached Fig. 1 and 2, metal sealing working assemblies 9 of the invention include nine groups of opening seal operation rings, using gold
Belong to material to be made, for example stainless steel or alloy material are made, wherein the outer wall section of first group of opening seal operation ring is cone
Shape structure is equipped with the first connection bump in the downside of first group of opening seal operation ring, second group of opening seal operation ring it is outer
Wall section is right-angled trapezium, and the upper surface of right-angled trapezium is equipped with the second connecting groove, with first group of opening seal operation ring
Connection bump cooperation, the lower surface of right-angled trapezium are equipped with the second connection bump, the outer wall section of third group opening seal operation ring
For the ring structure with unfilled corner, and upper surface sets third connecting groove, and lower surface is equipped with third connection bump；4th opening sealing
Standard annulus is respectively adopted in building ring, the 5th opening seal operation ring, the 6th opening seal operation ring；7th opening seal operation
Ring is identical as the third opening structure of seal operation ring, and installation direction is opposite；8th opening seal operation ring and the second opening are close
The structure for sealing building ring is identical, and installation direction is opposite；The structure of 9th opening seal operation ring and the first opening seal operation ring
Identical, installation direction is opposite.
Wherein, third group opening seal operation ring, the 4th opening seal operation ring, the 5th opening seal operation ring, the 6th
The internal diameter of opening seal operation ring and the opening seal operation ring of seven is identical；Second group of opening seal operation ring and the 8th opening
The internal diameter of seal operation ring is identical, and is greater than the internal diameter of the 4th opening seal operation ring；First group of opening seal operation ring
It is identical as the 9th opening internal diameter of seal operation ring, and it is greater than the internal diameter of second group of opening seal operation ring, make nine groups to open in this way
Mouthful seal operation ring can form a whole structure, and inside forms the shape that a section is inclined-plane and upper hypocentrum cooperates,
Outside forms circular configuration and casing-contact forms sealing and packing function.
The upper end of snap set 6 is connect with sealing steel bushing 3, and the snap 7 in snap set 6 is equipped with gingival cyst of mucous gland in the newborn step, passes through gingival cyst of mucous gland in the newborn
The gingival cyst of mucous gland in the newborn line of step and upper 5 outer wall of centrum sealing piston cooperates, and centrum sealing piston 5 is made to be fixed on corresponding position.
It is equipped with deblocking shear pin 12 between central tube 15 and hypocentrum 10, locking nail is equipped between lower contact 14 and hypocentrum 10
13, and it is designed as left-hand thread between the central tube 15 and lower contact 14, by rotation center pipe 15, deblocking shear pin 12 is cut,
Simultaneously because lower contact 14 is equipped with locking nail 13, the rotation of central tube 15 is realized, and then receive metal sealing working assemblies 9
Contracting, 7 return of snap, upper centrum sealing piston 5 move up, and final metal sealing working assemblies 9 retract original position.
The shearing force of above-mentioned locking nail 13 is greater than the shearing force of deblocking shear pin 12；Preferably, the taper of above-mentioned hypocentrum 10
Less than the taper of the lower vertebra head of upper 5 bottom of centrum sealing piston.
The bottom interior wall of above-mentioned hypocentrum 10 is equipped with trapezoidal left-hand thread, is connect by trapezoidal left-hand thread with the outer wall of central tube 15,
When rotating forward central tube, deblocking shear pin 12 is cut, and hypocentrum 10 is driven to rotate (moreover, hypocentrum and the gravity of lower contact are made
With, make its rotate and move down more easily realize), due to be installed between hypocentrum 10 and lower contact it is locking nail 13, hypocentrum 10
With lower contact synchronous rotary and move down, metal sealing working assemblies 9 and then bounce back.
A kind of application method for underground work metal packer that the present invention mentions, comprising the following steps:
One, central tube 15 is mounted between upper and lower connector by assembling underground work metal packer, and in top connection 1
External screw thread connection sealing steel bushing 3, installs centrum sealing piston 5 in sealing steel bushing 3, and is connected to by setting shear pin 16 close
It seals on the snap set 6 of 3 bottom of steel bushing；Metal sealing working assemblies 9 are equipped at the middle part of central tube 15, upside and upper centrum are close
It seals piston 5 to cooperate, downside and hypocentrum 10 cooperate, after the completion the position to be insulated under lower going-into-well；
Two, it when setting, is suppressed by wellhead assembly, since the bottom of underground work metal packer is equipped with blind plugging (figure
In be not shown, be existing conventional techniques), highly pressurised liquid by inlet opening 17 enter sealing steel bushing 3 and central tube 15 between ring
Sky, centrum sealing piston 5 is cut shear pin 12 is unsealed in promotion, and is moved down, since the taper of hypocentrum 10 is less than upper vertebra
The taper of the lower vertebra head of 5 bottom of body sealing piston, so metal sealing working assemblies 9 is pushed to be displaced outwardly and tight with casing wall
Closely connected conjunction cooperates locking bit with the gingival cyst of mucous gland in the newborn step of snap 7 at this point, the outer wall due to upper centrum sealing piston 5 is equipped with gingival cyst of mucous gland in the newborn line
It sets, realizes packing；
Three, it when unsealing, is rotated by wellhead assembly, since the shearing force of locking nail 13 is greater than the shearing of deblocking shear pin 12
Power, deblocking shear pin 12 are cut, and central tube 15 realizes rotation, due to being installed on locking nail 13 between hypocentrum 10 and lower contact,
Hypocentrum 10 and lower contact synchronous rotary simultaneously move down, so that the loosening of metal sealing working assemblies 9 be made to move down, and then make gold
Belong to seal operation sub-assembly 9 to shrink, in this way, metal sealing working assemblies 9 retract original position, the solution of realization device, which is sealed up, to be mentioned.
In addition, the structure of upper centrum composite sealing ring 8 and hypocentrum composite sealing ring 11 is as follows: including one group of left becket
With two groups of right beckets, left becket is clipped in the centre of right becket, and the left becket is connected and fixed with upper and lower centrum,
Right becket is connected and fixed with central tube, realizes mechanical seal, avoids asking using service life is shorter existing for rubber seal
Topic.
The present invention is by using metal sealing working assemblies made of all-metal and upper centrum composite sealing ring 8 and lower vertebra
Bluk recombination sealing ring 11 and ring gasket 2, whole device all uses metal parts, can overcome existing rubber packer
Defect, certainly, in terms of high temperature resistant and pressure, also superior to the packer of rubber and metal bonding.
Embodiment 2, a kind of underground work metal packer that the present invention mentions, difference from Example 1 is this hair
The metal sealing working assemblies 9 of bright use include seven groups of opening seal operation rings, and three groups of two sides are same as Example 1, in
Between use one group of metal sealing working assemblies 9, and the length of intermediate metal sealing working assemblies 9 is greater than other and is open
Seal operation ring, also the same solves the problems, such as to mention in embodiment 1, works by using metal sealing made of all-metal
Sub-assembly can overcome the defect of existing rubber packer, certainly, in terms of high temperature resistant and pressure, also superior to rubber and gold
Belong to the packer combined；
Embodiment 3, a kind of underground work metal packer that the present invention mentions, difference from Example 1 is this hair
The metal sealing working assemblies 9 of bright use include five groups of opening seal operation rings, and two groups of two sides are same as Example 1, in
Between use one group of metal sealing working assemblies 9, and the length of intermediate metal sealing working assemblies 9 is greater than other and is open
Seal operation ring, also the same solves the problems, such as to mention in embodiment 1.
In addition, the center pipe outer wall in 7 side of snap, can be installed on the raised line of a longitudinal direction, when for unsealing, center
7 return of pipe rotation forces snap, is more advantageous to 5 return of centrum sealing piston, so that the metal sealing of top half is worked and combines
Part 9 is easier return, to quickly recycle entire underground work metal packer.
The above, is only part preferred embodiment of the invention, and anyone skilled in the art may benefit
Equivalent technical solution is modified or is revised as with the technical solution of above-mentioned elaboration.Therefore, technology according to the present invention
Any simple modification or substitute equivalents that scheme is carried out, belong to the greatest extent the scope of protection of present invention.
Claims (9)
1. a kind of underground work metal packer, it is characterized in that: including top connection (1), ring gasket (2), sealing steel bushing
(3), combined bidirectional sealing ring (4), upper centrum sealing piston (5), snap set (6), snap (7), upper centrum composite sealing ring
(8), metal sealing working assemblies (9), hypocentrum (10), hypocentrum composite sealing ring (11), deblocking shear pin (12), locking nail
(13), the upper end of lower contact (14), central tube (15), setting shear pin (16), the central tube (15) is connect with top connection (1),
Outer wall connection sealing steel bushing (3) of top connection (1), upper centrum sealing piston (5) are mounted on the central tube (15) and sealing steel
The annular space between (3) is covered, is connect by setting shear pin (16) with snap set (6) on the outside of the middle and lower part of upper centrum sealing piston (5),
Snap (7) are installed in snap set (6)；The bottom of the upper centrum sealing piston (5) is conical head, close with metal by conical head
Envelope working assemblies (9) is engaged, and lower part and the hypocentrum (10) of the metal sealing working assemblies (9) are engaged,
The inner wall of hypocentrum (10) is sealed by hypocentrum composite sealing ring (11) and central tube (15), and the outer wall in hypocentrum (10)
It is connect by locking nail (13) and screw thread with lower contact (14) equipped with deblocking shear pin (12) and locking nail (13), hypocentrum (10),
It is connect by deblocking shear pin (12) with central tube (15).
2. underground work metal packer according to claim 1, it is characterized in that: the metal sealing working assemblies
(9) include three groups or three groups or more of opening seal operation ring, be equipped with protrusion in the side of opening seal operation ring, the other side is set
It is fluted, to realize synchronizing moving.
3. underground work metal packer according to claim 2, it is characterized in that: the metal sealing working assemblies
It (9) include the seal operation ring that is open made of nine groups of metals, wherein the outer wall section of first group of opening seal operation ring is taper
Structure is equipped with the first connection bump, the outer wall of second group of opening seal operation ring in the downside of first group of opening seal operation ring
Section is right-angled trapezium, and the upper surface of right-angled trapezium is equipped with the second connecting groove, the company with first group of opening seal operation ring
Male cooperation is connect, the lower surface of right-angled trapezium is equipped with the second connection bump, and the outer wall section of third group opening seal operation ring is
Ring structure with unfilled corner, and upper surface sets third connecting groove, lower surface is equipped with third connection bump；
Mark is respectively adopted in 4th group of opening seal operation ring, the 5th group of opening seal operation ring, the 6th group of opening seal operation ring
Director circle ring；
7th group of opening seal operation ring is identical as the third group opening structure of seal operation ring, and installation direction is opposite；8th group
Being open, seal operation ring is identical as the structure of second group of opening seal operation ring, and installation direction is opposite；9th group of opening seals work
It is identical as the structure of first group of opening seal operation ring to make ring, installation direction is opposite.
4. underground work metal packer according to claim 3, the seal operation it is characterized in that: the third group is open
Ring, the 4th group of opening seal operation ring, the 5th group of opening seal operation ring, the 6th group of opening seal operation ring and the 7th group of opening
The internal diameter of seal operation ring is identical；The internal diameter of second group of opening seal operation ring and the 8th group of opening seal operation ring is identical, and
Greater than the internal diameter of the 4th group of opening seal operation ring；First group of opening seal operation ring and the 9th group of opening seal operation ring
Internal diameter it is identical, and be greater than second group of opening seal operation ring internal diameter.
5. underground work metal packer according to claim 1, it is characterized in that: the upper end of the snap set (6) with
Steel bushing (3) connection is sealed, and the snap (7) in snap set (6) is equipped with gingival cyst of mucous gland in the newborn step, is lived by gingival cyst of mucous gland in the newborn step and the sealing of upper centrum
The gingival cyst of mucous gland in the newborn line cooperation for filling in (5) outer wall, makes centrum sealing piston (5) be fixed on corresponding position.
6. underground work metal packer according to claim 1, it is characterized in that: the central tube (15) and hypocentrum
(10) it is equipped with deblocking shear pin (12) between, locking nail (13), and the center are equipped between lower contact (14) and hypocentrum (10)
It is designed as left-hand thread between pipe (15) and lower contact (14), by rotation center pipe (15), deblocking shear pin (12) is cut, while by
It is equipped with locking nail (13) in lower contact (14), realizes the rotation of central tube (15), and then receives metal sealing working assemblies (9)
Contracting, snap (7) return, upper centrum sealing piston (5) move up, and final metal sealing working assemblies (9) retract in situ.
7. underground work metal packer according to claim 6, it is characterized in that: the shearing force of the locking nail (13)
Greater than the shearing force of deblocking shear pin (12).
8. underground work metal packer according to claim 1, it is characterized in that: the taper of the hypocentrum (10) is small
In the taper of the conical head of upper centrum sealing piston (5) bottom.
9. underground work metal packer according to claim 1, it is characterized in that: in the bottom of the hypocentrum (10)
Wall is equipped with trapezoidal left-hand thread, is connect by trapezoidal left-hand thread with the outer wall of central tube (15), when rotating forward central tube, unseals shear pin (12) quilt
It cuts, hypocentrum (10) is driven to rotate, due to being installed on locking nail (13), hypocentrum between hypocentrum (10) and lower contact
(10) it and lower contact synchronous rotary and moves down, metal sealing working assemblies (9) and then bounces back.
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| CN110593802B (en) * | 2019-09-06 | 2022-03-04 | 中国石油集团西部钻探工程有限公司 | Metal sealing packing device |
| CN114658386A (en) * | 2022-05-24 | 2022-06-24 | 纬达石油装备有限公司 | Expansion packer and using method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110617026B (en) * | 2017-11-03 | 2021-08-03 | 大庆市宏博晟达石油机械设备有限公司 | Downhole operation device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110617026A (en) | 2019-12-27 |
| CN107893641A (en) | 2018-04-10 |
| CN110617026B (en) | 2021-08-03 |
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