CN104963652B - From sealed compression packer - Google Patents
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- CN104963652B CN104963652B CN201510374178.7A CN201510374178A CN104963652B CN 104963652 B CN104963652 B CN 104963652B CN 201510374178 A CN201510374178 A CN 201510374178A CN 104963652 B CN104963652 B CN 104963652B
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Abstract
The invention discloses one kind from sealed compression packer,The sealing means being combined with self-styled cup packing using compression packing element sealing,By compressing packing element,Slip assemblies,Self-styled cup packing component,Hydraulic pressure cylinder assembly forms the packer that self-locking device composition sets function with two-layer during setting,Setting force is strong,And should not limited by hole angle and well track from setting for sealed compression packer,After setting,Ensure that the operating pressure born is high,Pressure-bearing pressure differential range advantage wide,Should be unaffected from the ability that sets of sealed compression packer in varied situations,When needing deblocking,Should be unsealed using upper lifting pipe post mode from sealed compression packer,Solution is honored as a queen can also be set again,Once entering well can be repeated several times setting construction operation,Not only it is applicable pressure break and flowing back by hydraulic pump connection is constructed,Sleeve pipe is also applicable to look for Lou,Test Lou and the construction operation such as water filling,Suitable for straight well,Setting in inclined shaft and high angle hole.
Description
Technical field
It is more particularly to a kind of from sealed compression packing the present invention relates to oil-gas field development drilling downhole tool technical field
Device.
Background technology
Oil/gas Well separate stratum fracfturing, oil production by layer, be acidified, look for string, envelope string etc. underground work when, conventional packer has pressure
Contracting formula and expanding two types, the packer of both types are each advantageous in Downhole Construction, but for pressure break (acid
Change) when being constructed with flowing back by hydraulic pump connection, easily occur the shapes such as deblocking, bearing capacity difference occur in setting difficult and construction way
Condition, in particular with drilling technique progress constantly in terms of high temperature, high pressure and complicated deep formation, the operating mode of oil gas well mining
Condition also becomes increasingly complex, and this proposes requirement higher for the key tool-packer in underground work, and in level
What is exposed in well, high angle hole construction is particularly problematic.
The packer mainly RTTS for being used in pressure break (acidifying) and flowing back by hydraulic pump combination operation process at present, it is present
And set that success rate is low, problem that is cannot being set in high angle hole and horizontal well；Although Y531 packers set does not receive hole deviation
Angle and well track are limited, but it does not have slips supporting construction, and after open flow terminates, packer is unsealed automatically, and can not be simultaneously
Complete flowing back by hydraulic pump construction operation.
The content of the invention
Join it is an object of the invention to provide a kind of pressure break suitable for straight well, inclined shaft and high angle hole and flowing back by hydraulic pump
Operation and once enter well can be repeated several times setting construction operation from sealed compression packer.
Therefore, technical scheme is as follows：
It is a kind of from sealed compression packer, including top connection, central tube, outer tube, compression packing element, hydraulic pressure cylinder assembly, card
Watt component, self-styled cup packing component, lower contact, sealing shroud, compression stop collar and ball seat, wherein：
The outer tube be sleeved on the top of the central tube outer upper and the central tube and the outer tube with
The lower end of the top connection is fixedly connected, and outer tube downside outer wall caves inward, and the compression packing element is sleeved on described outer
Sleeve outer wall recess makes external diameter of its outer wall external diameter in the uncompressed state with the outer tube in portion disposed thereon and position
It is consistent in the external diameter of the upper casing pressure piston of its underpart, along the circumferential direction it has been formed uniformly multiple on the side wall of the outer tube
Sand control liquid pass hole, forms the first annular space and by the sand control liquid pass hole and sleeve pipe between the outer tube and the central tube
Portion connects；
The hydraulic pressure cylinder assembly includes can be along center pipe axle to the upper casing pressure piston and slips cone for moving back and forth
Piston, the upper casing pressure piston bush is sleeved on the central tube mounted in outer sleeve bottom outside, the slips taper piston
Outside, the upper casing pressure piston underside inwall cave inward to be formed with the slips taper piston upper surface coordinate the first ring
Shape step makes to be formed between the upper casing pressure piston and central tube the formation annular space and the outer tube and the central tube between and connects
The second logical annular space, the slips taper piston bottom outer wall has along the circumferential direction been convexed to form and coordinated with the upper casing pressure piston
The first support level；
The slip assemblies include slips upper cone, slips, slips lower cone, spacing ring, lock ring pressure cap, lock ring and seat card
Support tube, the spacing ring is set with and is fixed in the center pipe outer wall and the slips taper piston lower end inner wall concaves
Fall into be formed with and form spacing with the second ring-shaped step of spacing ring upper surface cooperation, limit under the slips taper piston
OK, the slips upper cone is fixed on the lower end of the slips taper piston, and the lock ring and the lock ring pressure cap are arranged on institute
The gap formed between slips taper piston and the central tube is stated, the lock ring is set with and is movably fixed to the central tube
Outside, the lock ring pressure cap is press-fitted on the lock ring, the lock ring pressure cap is passed through the lock ring spacing certain interval interior
Move up and down, the seat card support tube is sleeved on the central tube outside and is fixed on the lock ring pressure cap bottom, the slips
Lower cone is sleeved on the seat card support tube lower outside, and the slips upper cone and the slips lower cone are respectively by multiple
Seat card shear pin and multiple deblocking shear pins are fixed on the top of the seat card support tube and the bottom of the seat card support tube, the card
Watt it is arranged in the gathering sill formed between the slips upper cone and the slips lower cone；
Further, lock ring described above is set with and is movably fixed to the technical scheme tool that the central tube outside is used
Body is：Zigzag internal thread is formed with the inwall of the lock ring, is formed with the center pipe outer wall and the lock ring inwall
On zigzag screw-internal thread fit zigzag external screw thread, by the zigzag external screw thread in control centre's pipe outer wall and the lock
Relative position between zigzag internal thread on ring inwall forms engagement and non-engagement state, realizes lock ring on central tube
Self-locking and unblock.
The self-styled cup packing component includes the outer skeleton of leather cup inner frame, leather cup, leather cup, leather cup wedging ring and setting cuts
Nail set, the leather cup inner frame is sleeved on the central tube outside, and the outer skeleton of the leather cup is sleeved on outside the leather cup inner frame
Inboard wall of skeleton and the slips lower cone inwall are each attached on the leather cup inner frame outer wall outside side, and the leather cup, described
Leather cup the rim of a bowl is sleeved on downwards on the central tube；
The lower contact is fixedly connected on the central tube lower end, and the leather cup wedging ring is sleeved on the lower contact outside
Top is simultaneously fixed in the lower contact by setting shear pin, and the leather cup wedging ring top upwardly extends is set with the leather cup
On the central tube and it is arranged on that the leather cup inner frame, the leather cup are outer to be formed between skeleton and the leather cup wedging ring
Cavity in, the sealing shroud is sleeved on the lower contact outer lower portion, and the sealing shroud bottom outer wall has been convexed to form and institute
Leather cup wedging ring bottom is stated with merging the second support level for being fixedly connected, the sealing shroud upper inside wall local dent with it is described
Liquid passage was formed between lower contact outer wall, through hole was machined with the wall of the lower contact side, made the liquid passage of crossing by described
Through hole on the wall of lower contact side is connected with lower contact inside；
The ball seat be sleeved on the lower contact inwall and by ball seat shear pin by the ball seat be fixed on it is described under connect
On head, the compression stop collar is sleeved in the lower contact bottom outer wall and is fixed on the compression stop collar by jackscrew
In the lower contact, when needing to set the leather cup wedging ring with sealing shroud fall to compression stop collar on when, it is described under connect
Through hole on rostral wall is connected with inside pipe casing, and the working liquids in packer can be entered by the through hole on the wall of lower contact side
In annular space space between sleeve pipe and packer.
Further, the outer tube and it is described between casing pressure piston, it is described on casing pressure piston and slips cone
Between body piston, between the central tube and the slips taper piston, between the central tube and the leather cup inner frame, institute
State between lower contact and the ball seat, between the leather cup wedging ring and the lower contact and the leather cup wedging ring and described
Sealing is mutually cooperatively formed between sealing shroud.
Further, the slips upper cone outer wall is formed with and cooperated with the slips inwall and can make the card
The conical surface of watt upstroke.
Further, the shearing force that can be born of the ball seat shear pin can more than the setting shear pin on leather cup wedging ring
The shearing force born.
Further, between the top connection and the central tube, between the top connection and the outer tube, the limit
Position ring inwall and the center pipe outer wall between, between the leather cup inner frame outer wall and the slips lower cone inwall, it is described
Leather cup is outer between inboard wall of skeleton and the leather cup inner frame outer wall, between the lower contact inwall and the center pipe outer wall and
Using threaded connection between the compression stop collar inwall and the center pipe outer wall.
Compared with prior art, should be combined with self-styled cup packing using compression packing element sealing from sealed compression packer
Sealing means, formed during setting by compressing packing element, slip assemblies, self-styled cup packing component, hydraulic pressure cylinder assembly
Self-locking device composition sets the packer of function with two-layer, and setting force is strong, and should setting not from sealed compression packer
Limited by hole angle and well track, after setting, ensure that the operating pressure born is high, pressure-bearing pressure differential range advantage wide,
By verifying that this can bear the reverse differential pressure of 70MPa forward direction pressure differences and 35MPa from sealed compression packer, in varied situations
This is unaffected, it is necessary to when unsealing, should be used from sealed compression packer from the ability that sets of sealed compression packer
Upper lifting pipe post mode is unsealed, and solution is honored as a queen can also be set again, and once entering well can be repeated several times setting construction operation, not only be applicable
Pressure break and flowing back by hydraulic pump connection are constructed, be also applicable sleeve pipe look for Lou, test Lou and the construction operation such as water filling, it is adaptable to straight well, inclined shaft
And setting in high angle hole.
Figure of description
Fig. 1 is the cross-sectional view from sealed compression packer of the invention；
Fig. 2 is the structural representation for being in the state that sets in sleeve pipe from sealed compression packer of the invention.
In figure：1st, top connection；2nd, central tube；2-1, zigzag internal thread；3rd, sand control liquid pass hole；4th, outer tube；5th, compress
Packing element component；6th, upper casing pressure piston；7th, hydraulic pressure cylinder assembly-slips taper piston；8th, spacing ring；9th, lock ring pressure cap；10th, lock ring；
11st, seat card support tube；12nd, slips upper cone；12-1, seat card shear pin；13rd, slips；14th, slips lower cone；14-1, deblocking are cut
Nail；15th, leather cup inner frame；16th, the outer skeleton of leather cup；17th, leather cup；18th, setting shear pin set；19th, setting shear pin；20th, leather cup compression
Set；21st, lower contact；21-1, excessively liquid passage；22nd, ball sealer；23rd, ball seat；24th, sealing shroud；25th, ball seat shear pin；26th, jackscrew；
27th, stop collar is compressed；
Specific embodiment
It is described in detail from the structure of sealed compression packer to of the invention below in conjunction with the accompanying drawings.
As shown in Fig. 1~2, should be from sealed compression packer, including top connection 1, central tube 2, outer tube 4, compression packing element
5th, hydraulic pressure cylinder assembly, slip assemblies, self-styled cup packing component, lower contact 21, sealing shroud 24, compression stop collar 27 and ball seat
23, wherein：
The outer tube 4 is sleeved on the top of the outer upper of the central tube 2 and the central tube 2 and the outer tube 4
Lower end with the top connection 1 is fixedly connected, and the downside outer wall of the outer tube 4 caves inward, and the compression packing element 5 is sleeved on
At the outer wall depression of the outer tube 4, multiple sand control liquid pass holes are along the circumferential direction formed uniformly on the side wall of the outer tube 4
3, the first annular space is formed between the outer tube 4 and the central tube 2 and is connected with inside pipe casing by the sand control liquid pass hole 3
It is logical；
Spiral shell is used between the top connection 1 and the central tube 2 and between the top connection 1 and the outer tube 4
Line is connected.
The hydraulic pressure cylinder assembly includes upper casing pressure piston 6 and slips taper piston 7, and the upper casing pressure piston 6 is sleeved on institute
The bottom outside of outer tube 4 is stated, the slips taper piston 7 is sleeved on the outside of the central tube 2, under the upper casing pressure piston 6
Side inwall caves inward to be formed makes the upper casing pressure piston with the first annular step of the upper surface of slips taper piston 7 cooperation
Formed between 6 and central tube 2 and the second annular space that annular space is connected, the card are formed between the outer tube 4 and the central tube 2
Watt bottom outer wall of taper piston 7 along the circumferential direction convexes to form the first support level coordinated with the upper casing pressure piston 6；
The outer tube 4 and it is described between casing pressure piston 6, it is described on casing pressure piston 6 and the slips cone live
Sealing is mutually cooperatively formed between plug 7, and between the central tube 2 and the slips taper piston 7；
The hydraulic pressure cylinder assembly can pump along the axial direction of the central tube 2 and outer tube 4, when the hydraulic pressure
When cylinder component receives lower component extruding upstroke, it is axially compressed while radially that the compression packing element 5 will receive extruding
Expansion contacts realization and sets with internal surface of sleeve pipe；When the casing pressure on the top of packing element 5 is higher than tubing pressure, the work of high pressure
In the annular clearance that industry liquid can be entered between outer tube 4 and core pipe 2 by sand control liquid pass hole 3, and enter hydraulic pressure cylinder assembly
In the cavity formed between central tube 2, due to upper casing pressure piston 6 can be oppressed by hydraulic action and slips taper piston 7 is produced
The opposite relative motion of a raw direction of motion, be applied to casing pressure piston 6 the pressure upstream compression compression packing element 5 and then
The setting setting force of enhancing ground floor, is applied to the downstream pressure compressing slips upper cone 12 of slips taper piston 7, forces slips
13 expand along the conical surface upstroke slips 13 of slips upper cone 12, the setting setting force of the enhancing second layer.It can be seen that in any feelings
Under condition, should be unaffected from the ability that sets of sealed compression packer；
The slip assemblies include slips upper cone 12, slips 13, slips lower cone 14, spacing ring 8, lock ring pressure cap 9, lock
Ring 10 and seat card support tube 11, the spacing ring 8 are set with and are fixed on the outer wall of the central tube 2 and the slips taper piston
7 lower end inner walls cave inward be formed with the upper surface of the spacing ring 8 coordinate the second ring-shaped step, the slips upper cone 12
The lower end of the slips taper piston 7 is fixed on, the lock ring 10 and the lock ring pressure cap 9 are arranged on the slips taper piston
The gap formed between 7 and the central tube 2, the lock ring 10 is set with and is movably fixed to the outside of the central tube 2, described
Lock ring pressure cap 9 is press-fitted on the lock ring 10, the lock ring pressure cap 9 is passed through the lock ring 10 spacing certain interval interior upper and lower
Move and fix, specifically, zigzag internal thread 2-1 is formed with the inwall of the lock ring 10, on the outer wall of the central tube 2
Be formed with the inwall of the lock ring 10 zigzag internal thread 2-1 coordinate zigzag external screw thread, by control centre's pipe 2 outside
Relative position between zigzag external screw thread on wall and the zigzag internal thread 2-1 on the inwall of the lock ring 10 formed engage and
Non-engagement state, realizes lock ring 10 self-locking and unblock on central tube 2；
The seat card support tube 11 is sleeved on the outside of the central tube 2 and is fixed on the bottom of lock ring pressure cap 9, the card
Watt lower cone 14 is sleeved on 14 points of the lower outside of seat card support tube 11, the slips upper cone 12 and the slips lower cone
The multiple seat card shear pin 12-1 that Tong Guo be distributed along the circumferential direction and the multiple deblocking shear pin 14-1 being along the circumferential direction distributed are fixed
In the top of the seat card support tube 11 and the bottom of the seat card support tube 11, the slips 13 is arranged on the slips epicone
Between body 12 and the slips lower cone 14 formed gathering sill in, specifically, the outer wall of slips upper cone 12 be formed with
The inwall of the slips 13 cooperates and can make the conical surface of the upstroke of the slips 13；
Additionally, sealing is complemented each other to form between the central tube 2 and the leather cup inner frame 15, in the spacing ring 8
Fixed using threaded connection between wall and the outer wall of the central tube 2；
The self-styled cup packing component includes leather cup inner frame 15, leather cup outer skeleton 16, leather cup 17, leather cup wedging ring 20
With setting shear pin set 18, the leather cup inner frame 15 is sleeved on the outside of the central tube 2, and the outer skeleton 16 of the leather cup is sleeved on institute
The outside of leather cup inner frame 15 is stated, and the outer inwall of skeleton 16 of the leather cup and the inwall of slips lower cone 14 are each attached to the skin
On the bowl outer wall of inner frame 15, the rim of a bowl of the leather cup 17 is sleeved on downwards on the central tube 2；
The lower contact 21 is fixedly connected on the lower end of the central tube 2, the leather cup wedging ring 20 be sleeved on it is described under connect
First 21 outer upper is simultaneously fixed in the lower contact 21 by setting shear pin 19, and the top of leather cup wedging ring 20 upwardly extends
Make the leather cup 17 be sleeved on the central tube 2 and be arranged on the outer skeleton 16 of the leather cup inner frame 15, the leather cup and
In the cavity formed between the leather cup wedging ring 20, the sealing shroud 24 is sleeved on the outer lower portion of the lower contact 21, described
The bottom outer wall of sealing shroud 24 convexes to form the second support level matched somebody with somebody with the bottom of leather cup wedging ring 20 and merge and be fixedly connected,
Liquid passage, the side of the lower contact 21 were formed between the upper inside wall local dent of the sealing shroud 24 and the outer wall of the lower contact 21
Through hole is machined with wall, is made in the through hole crossed on the liquid passage excessively described side walls of lower contact 21 of logical 21-1 and the lower contact 21
Portion connects；
Between the leather cup wedging ring 20 and the lower contact 21 with the leather cup wedging ring 20 and the sealing shroud 24 it
Between mutually cooperatively form sealing；With the leather cup between the outer wall of leather cup inner frame 15 and the inwall of slips lower cone 14
Fixed using threaded connection between the inwall of outer skeleton 16 and the outer wall of leather cup inner frame 15；
The ball seat 23 is sleeved on the inwall of the lower contact 21 and is fixed on the ball seat 23 by ball seat shear pin 25
In the lower contact 21, the compression stop collar 27 is sleeved in the bottom outer wall of the lower contact 21 and will be described by jackscrew 26
Compression stop collar 27 is fixed in the lower contact 21；
Wherein, the shearing force that the ball seat shear pin 25 can bear is more than the shearing force that setting shear pin 19 can bear.
Sealing is complemented each other to form between the lower contact 21 and the ball seat 23；The inwall of the lower contact 21 and it is described in
Fixed using threaded connection between the outer wall of heart pipe 2 and between the compression inwall of stop collar 27 and the outer wall of the central tube 2.
It refers to specifically in the contact side of all parts that sealing is complemented each other to form between the above all parts
Side wall is machined with the sealing ring cover for seat for placing sealing ring to realize the sealing between all parts.
The operation principle from sealed compression packer：
It is described to require to enter after installing according to detail design with working string (sleeve pipe and oil pipe) from sealed compression packer
Well carries out operation；
When needing setting in underground, ball sealer 22 is put into, to being suppressed in oil pipe, oily overpressure increases, working liquids
It is applied on sealing shroud 24 by the logical 21-1 of liquid passage, under its pressure-bearing is broken setting shear pin 19 while driving leather cup wedging ring 20
OK, leather cup wedging ring 20 described in the cause of release and be contracted in the leather cup 17 of the inner side of leather cup wedging ring 20, the leather cup 17 is voluntarily
Expansion is contacted with internal surface of sleeve pipe, and the sealing shroud 24 stop when coming downwards on wedging ring spacing 27 it is descending, will not be with device sheet
Body departs from, and the through hole on the side wall of now lower contact 21 is in communication with the outside；Continue to be suppressed in oil pipe, oily overpressure continues to increase
Greatly, ball seat shear pin 25 is cut, and ball seat 23 is descending to fall off device body, now, packer inside be connected to the envelope
Oil pipe connection below device, and the pressure rise of working liquids is injected with oil pipe, working liquids pass through the side wall of lower contact 21
On through hole exit into well, working liquids by hydraulic action it is up, when oil pipe injection pressure be higher than packer top
During casing pressure, the pressure-bearing of leather cup 17 produces upward trend, while promote slips lower cone 14 and seat card support tube 11 together up,
And by setting the seat card shear pin 12-1 on the present top of card support tube 11 and then driving slips upper cone 12, slips taper piston 7
Up with upper casing pressure piston 6, compression packing element 5 is subject to compression to be contacted with internal surface of sleeve pipe and realizes that ground floor is setting；Volume is reached when setting
After constant load, seat card shear pin 12-1 is cut, and slips lower cone 14 loses support and continues up, and compressing slips 13 is along slips epicone
The continuous up expansion block card of the conical surface of body 12, enhancing and the anchorage force of sleeve pipe, i.e., contact with internal surface of sleeve pipe and realize that the second layer sets,
Set simultaneously outside the zigzag internal thread 2-1 on the inwall of lock ring 10 at the present top of card support tube 11 and the zigzag on central tube
Screw thread is engaged, and compression packing element 5 and slips 13 are locked at into setting and seat card-like state, and whole setting procedure is completed, and can enter lower
Step operation.
While it should be further stated that, it is known that in above process, when the pressure of oil pipe injection is higher than on packer
During parts casing pipe pressure, the pressure-bearing of leather cup 17 produces upward trend, promotes the up expansion of slips 13, necessarily between enhancing and internal surface of sleeve pipe
Anchorage force, however, when the top of packing element 5 casing pressure be higher than tubing pressure when, the working liquids of high pressure can pass through
In the annular clearance that sand control liquid pass hole 3 enters between outer tube 4 and core pipe 2, and enter between hydraulic pressure cylinder assembly and central tube 2
In the cavity of formation, due to upper casing pressure piston 6 and one direction of motion of generation of slips taper piston 7 can be oppressed by hydraulic action
Opposite relative motion, is applied to the pressure upstream compression compression packing element 5 of casing pressure piston 6 and then enhancing ground floor is setting
Setting force, be applied to the downstream pressure compressing slips upper cone 12 of slips taper piston 7, force slips 13 along slips upper cone
12 conical surface upstroke slips 13 is expanded, the setting setting force of the enhancing second layer.It can be seen that under any circumstance, the self-styled compression
The ability that sets of formula packer is unaffected.
When deblocking is needed after the end of job, above carry the tubing string that is connected to the top connection upper end and pass through the band of top connection 1
Dynamic central tube 2, lock ring 10, lock ring pressure cap 9, seat card support tube 11 are together up, and the deblocking being arranged on slips lower cone 14 is cut
Nail 14-1 be pulled off, now with internal surface of sleeve pipe also in anchoring states slips 13 because of the power of slips lower cone 14 and the seat card branch
Stay tube 11 is separated, therefore leather cup can only drive slips taper piston 7 and slips upper cone 12 1 ibid by seat card support tube 11
OK, at this moment slips 13 because lower section lose support force and along slips upper cone 12 the conical surface it is descending return to gathering sill, and compress packing element 5
Also the descending reset of casing pressure piston 6 is then promoted in the presence of its own resilient, the packer completes deblocking, the hydraulic cylinder group
Part and the slip assemblies return to original state.
If when setting again if desired after removing seal for packer, can be implemented by way of above putting and putting tubing string, and such as
Carried out described in upper setting again.During tubing string is transferred, produced with liquid in well when descending using the leather cup 17 expanded
Flooding, promote slips 13 up with internal surface of sleeve pipe grappling along cone, the release tubing string suspending weight compression compression packing element 5 enters
Row is setting.
In sum, present disclosure is not limited in above-described embodiment, and those skilled in the art can basis
Guiding theory of the invention proposes other embodiment, and these implementation methods are included within the scope of the present invention.
Claims (6)
1. one kind is from sealed compression packer, it is characterised in that including top connection (1), central tube (2), outer tube (4), compression
Packing element (5), hydraulic pressure cylinder assembly, slip assemblies, self-styled cup packing component, lower contact (21), sealing shroud (24), compression stop collar
(27) and ball seat (23), wherein：
The outer tube (4) is sleeved on the central tube (2) outer upper and the central tube (2) and the outer tube (4)
Lower end of the top with the top connection (1) is fixedly connected, and outer tube (4) downside outer wall caves inward, the compression glue
Cylinder (5) is sleeved at the outer tube (4) outer wall depression, is along the circumferential direction formed uniformly on the side wall of the outer tube (4)
There are multiple sand control liquid pass holes (3), the first annular space is formed between the outer tube (4) and the central tube (2) and by described anti-
Sand liquid pass hole (3) is connected with inside pipe casing；
The hydraulic pressure cylinder assembly includes upper casing pressure piston (6) and slips taper piston (7), and the upper casing pressure piston (6) is sleeved on
Outer tube (4) bottom outside, the slips taper piston (7) is sleeved on the outside of the central tube (2), the upper casing pressure
Piston (6) downside inwall caves inward to be formed makes institute with the first annular step of slips taper piston (7) upper surface cooperation
State to be formed between casing pressure piston (6) and central tube (2) and form annular space between the outer tube (4) and the central tube (2)
Second annular space of connection, slips taper piston (7) bottom outer wall has along the circumferential direction been convexed to form lives with the upper casing pressure
The first support level that plug (6) coordinates；
The slip assemblies include slips upper cone (12), slips (13), slips lower cone (14), spacing ring (8), lock ring pressure cap
(9), lock ring (10) and seat card support tube (11), the spacing ring (8) are set with and are fixed on the central tube (2) outer wall and institute
State slips taper piston (7) lower end inner wall cave inward be formed with the spacing ring (8) upper surface coordinate the second annular table
Rank, the slips upper cone (12) is fixed on the lower end of the slips taper piston (7), the lock ring (10) and the lock ring pressure
Cap (9) is arranged on the gap formed between the slips taper piston (7) and the central tube (2), lock ring (10) set
The central tube (2) outside is filled and is movably fixed to, the lock ring pressure cap (9) is press-fitted on the lock ring (10), makes the lock
Ring pressure cap (9) is moved up and down by the way that the lock ring (10) is spacing in certain interval, and the seat card support tube (11) is sleeved on institute
State central tube (2) outside and be fixed on lock ring pressure cap (9) bottom, the slips lower cone (14) is sleeved on the seat card branch
Stay tube (11) lower outside, the slips upper cone (12) and the slips lower cone (14) are respectively by multiple seat card shear pins
(12-1) and multiple deblockings shear pin (14-1) are fixed on the top of the seat card support tube (11) and the seat card support tube (11)
Bottom, the slips (13) be arranged between the slips upper cone (12) and the slips lower cone (14) formed guiding
In groove；
The self-styled cup packing component includes leather cup inner frame (15), leather cup outer skeleton (16), leather cup (17), leather cup wedging ring
(20) and setting shear pin set (18), the leather cup inner frame (15) is sleeved on the central tube (2) outside, the outer skeleton of the leather cup
(16) leather cup inner frame (15) outside, and outer skeleton (16) inwall of the leather cup and the slips lower cone (14) are sleeved on
Inwall is each attached on leather cup inner frame (15) outer wall, and described leather cup (17) the rim of a bowl is sleeved on downwards the central tube (2)
On；
The lower contact (21) is fixedly connected on the central tube (2) lower end, the leather cup wedging ring (20) be sleeved on it is described under
Joint (21) outer upper is simultaneously fixed in the lower contact (21) by setting shear pin (19), leather cup wedging ring (20) top
End upwardly extends makes the leather cup (17) be arranged on the leather cup inner frame (15), the outer skeleton (16) of the leather cup and the skin
In the cavity formed between bowl wedging ring (20), the sealing shroud (24) is sleeved on the lower contact (21) outer lower portion, described
Sealing shroud (24) bottom outer wall convexes to form the second support matched somebody with somebody with leather cup wedging ring (20) bottom and merge and be fixedly connected
Step, liquid passage (21- was formed between sealing shroud (24) the upper inside wall local dent and the lower contact (21) outer wall
1) through hole, is machined with the wall of lower contact (21) side, makes liquid passage (21-1) of crossing by the lower contact (21) side wall
On through hole and the lower contact (21) inside connect；
The ball seat (23) is sleeved on the lower contact (21) inwall and by ball seat shear pin (25) that the ball seat (23) is solid
It is scheduled in the lower contact (21), compression stop collar (27) is sleeved in the lower contact (21) bottom outer wall and by top
Be fixed on compression stop collar (27) in the lower contact (21) by silk (26).
2. according to claim 1 from sealed compression packer, it is characterised in that the outer tube (4) and it is described on
Between casing pressure piston (6), between the upper casing pressure piston (6) and the slips taper piston (7), the central tube (2) and institute
State between slips taper piston (7), between the central tube (2) and the leather cup inner frame (15), the lower contact (21) and
Between the ball seat (23), between the leather cup wedging ring (20) and the lower contact (21) and the leather cup wedging ring (20)
Sealing is mutually cooperatively formed and the sealing shroud (24) between.
3. it is according to claim 1 from sealed compression packer, it is characterised in that to be formed on the inwall of the lock ring (10)
There is zigzag internal thread (2-1), be formed with central tube (2) outer wall and spiral shell in the zigzag on the lock ring (10) inwall
The zigzag external screw thread that line (2-1) coordinates, zigzag external screw thread and the lock ring (10) on (2) outer wall are managed by control centre
Relative position between zigzag internal thread (2-1) on inwall forms self-locking with unblock.
4. it is according to claim 1 from sealed compression packer, it is characterised in that slips upper cone (12) the outer wall shape
Slips described in Cheng Youyu (13) inwall cooperates and can make the conical surface of the slips (13) upstroke.
5. it is according to claim 1 from sealed compression packer, it is characterised in that the ball seat shear pin (25) can hold
The shearing force received is more than the shearing force that the setting shear pin (19) on leather cup wedging ring (20) can bear.
6. it is according to claim 1 from sealed compression packer, it is characterised in that the top connection (1) and the center
Between pipe (2), between the top connection (1) and the outer tube (4), the spacing ring (8) inwall and the central tube (2) outward
Skeleton (16) between wall, between leather cup inner frame (15) outer wall and the slips lower cone (14) inwall, outside the leather cup
Between inwall and the leather cup inner frame (15) outer wall, between lower contact (21) inwall and the central tube (2) outer wall with
And using threaded connection between compression stop collar (27) inwall and the central tube (2) outer wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510374178.7A CN104963652B (en) | 2015-06-30 | 2015-06-30 | From sealed compression packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510374178.7A CN104963652B (en) | 2015-06-30 | 2015-06-30 | From sealed compression packer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104963652A CN104963652A (en) | 2015-10-07 |
| CN104963652B true CN104963652B (en) | 2017-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510374178.7A Active CN104963652B (en) | 2015-06-30 | 2015-06-30 | From sealed compression packer |
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| Country | Link |
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| CN (1) | CN104963652B (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545255B (en) * | 2015-12-31 | 2018-05-04 | 中国石油天然气股份有限公司 | A kind of novel oilfield is long-acting every adopting tubing string |
| CN105464615B (en) * | 2015-12-31 | 2019-01-11 | 东营市福利德石油科技开发有限责任公司 | Deepwater wells parallel double tube packer |
| CN105507845B (en) * | 2015-12-31 | 2018-05-04 | 中国石油天然气股份有限公司 | A kind of oil field is long-acting every adopting packer |
| CN106761538A (en) * | 2016-12-23 | 2017-05-31 | 中国石油天然气股份有限公司 | A kind of oil field is every using long packing element packer |
| CN108661592B (en) * | 2017-03-28 | 2020-07-10 | 中国石油天然气股份有限公司 | Oil pipe plug |
| CN110145273B (en) * | 2019-04-29 | 2020-02-04 | 大庆丹诺石油科技开发有限公司 | Packer for oil field |
| CN110439500B (en) * | 2019-08-20 | 2024-03-01 | 中国石油天然气集团有限公司 | Self-sealing type packing packer capable of relieving pressure and application method thereof |
| CN110566154B (en) * | 2019-10-15 | 2021-12-17 | 荆州市赛瑞能源技术有限公司 | Ultra-short type removable hydraulic packer |
| CN110847845A (en) * | 2019-11-28 | 2020-02-28 | 中国石油集团川庆钻探工程有限公司 | But two-way slips recovery type hydraulic pressure packer |
| CN113969760B (en) * | 2020-07-23 | 2023-08-22 | 中国石油天然气股份有限公司 | Electric channeling checking and leakage finding device |
| CN113417637B (en) * | 2021-06-18 | 2022-08-26 | 中国平煤神马能源化工集团有限责任公司 | Water pressurizing test system and method |
| CN117489293B (en) * | 2023-12-29 | 2024-03-22 | 中油博淏科技(天津)有限公司 | Packer with double sealing structures |
| CN117684910B (en) * | 2024-02-02 | 2024-05-14 | 盐城市弘通石油机械有限公司 | Efficient sand-prevention forced unclamping throttle |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3799260A (en) * | 1972-07-03 | 1974-03-26 | Halliburton Co | Well packer |
| US6715560B2 (en) * | 2001-03-01 | 2004-04-06 | Baker Hughes Incorporated | Collet-cone slip system for releasably securing well tools |
| US8205671B1 (en) * | 2009-12-04 | 2012-06-26 | Branton Tools L.L.C. | Downhole bridge plug or packer assemblies |
| CN101852070B (en) * | 2010-05-18 | 2012-12-19 | 何富全 | Pressure balancing inclined plane locking-type gradually deblocking packer |
| CN104295261B (en) * | 2014-10-17 | 2017-02-15 | 中国石油天然气股份有限公司 | Self-examination packer |
| CN104373075B (en) * | 2014-11-07 | 2017-04-12 | 中国石油天然气股份有限公司 | Fracturing packer |
| CN104453772A (en) * | 2014-12-18 | 2015-03-25 | 天津汇铸石油设备科技有限公司 | Self-sealed compression type packer |
| CN204754860U (en) * | 2015-06-30 | 2015-11-11 | 中国石油集团渤海钻探工程有限公司 | Proclaim oneself compression packer |
-
2015
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| CN104963652A (en) | 2015-10-07 |
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Effective date of registration: 20210210 Address after: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Bohai Drilling Engineering Co.,Ltd. Address before: 300457 Tianjin Binhai New Area Development Zone Huanghai Road 106 Bohai Drilling Engineering Co., Ltd. science and Technology Development Office Patentee before: CNPC Bohai Drilling Engineering Co.,Ltd. |
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