CN104963652B - From sealed compression packer - Google Patents

From sealed compression packer Download PDF

Info

Publication number
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
Authority
CN
China
Prior art keywords
slips
leather cup
tube
central tube
contact
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201510374178.7A
Other languages
Chinese (zh)
Other versions
CN104963652A (en
Inventor
张世林
王林
马金良
李诗仙
李祥珍
李楠
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China National Petroleum Corp
CNPC Bohai Drilling Engineering Co Ltd
Original Assignee
CNPC Bohai Drilling Engineering Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CNPC Bohai Drilling Engineering Co Ltd filed Critical CNPC Bohai Drilling Engineering Co Ltd
Priority to CN201510374178.7A priority Critical patent/CN104963652B/en
Publication of CN104963652A publication Critical patent/CN104963652A/en
Application granted granted Critical
Publication of CN104963652B publication Critical patent/CN104963652B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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

From sealed compression packer
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.
CN201510374178.7A 2015-06-30 2015-06-30 From sealed compression packer Active CN104963652B (en)

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

Family

ID=54217713

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510374178.7A Active CN104963652B (en) 2015-06-30 2015-06-30 From sealed compression packer

Country Status (1)

Country Link
CN (1) CN104963652B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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
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
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

Family Cites Families (8)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
CN104963652A (en) 2015-10-07

Similar Documents

Publication Publication Date Title
CN104963652B (en) From sealed compression packer
CN104213868B (en) Desirable bore anchor packer
CN202745795U (en) Hydraulic sealing and de-sealing high-pressure packer
CN101382052B (en) Back-off packer
CN105781461B (en) Hydraulic Double releasing gadget expandable liner hanger
CN206280047U (en) Temporary blocking type big orifice bridging plug
CN205605160U (en) Formula of breaking tail pipe blanking plug
CN204457578U (en) Packer
CN104453757B (en) Thick oil steam drive unseals bidirectionally anchoring tubing anchor
CN204754860U (en) Proclaim oneself compression packer
CN205936508U (en) Can shift and seal packer from testing
CN204163680U (en) A kind of rotating hydraulic packer
CN210768697U (en) Anti-mis-setting soluble bridge plug
CN201273169Y (en) High-pressure fishing type suspension packing tool
CN203347718U (en) Running tool for hydraulic packer
CN207315293U (en) Packer
CN206280046U (en) Calvus packing element insulates formula big orifice bridging plug
CN207296937U (en) High-pressure oil-gas well hydraulic oil pipe anchoring device
CN104329046B (en) Rotary hydraulic packer
CN205805498U (en) A kind of big orifice hydraulic packer
CN202249921U (en) Expanding type packer capable of unpacking stepwise
CN201401152Y (en) Double-packing-element releasing packer
CN201297154Y (en) Oil well blocking device
CN107542418A (en) High-pressure oil-gas well hydraulic oil pipe anchoring device and its method of work
CN101382053B (en) Oil well packer

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
GR01 Patent grant
TR01 Transfer of patent right
TR01 Transfer of patent right

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.