CN209053582U - A kind of gradually deblocking device - Google Patents

Abstract

The utility model provides a kind of gradually deblocking device, including slip joint, lower contact, and the lower contact upper end is protruded into slip joint, and lower contact upper end outer wall and slip joint inner wall are to be slidingly sealed state.The slip joint lower port screw thread type connection installation limit sleeve, limit sleeve constitute axial limiting to lower contact.There is a limiting stand in the lower contact outer circle, the limit sleeve inner wall is equipped with the second limiting stand, and the first limiting stand lower end surface is by the second limiting stand upper surface axial limiting.Slip joint large aperture upper surface is third limiting stand, and third limiting stand is to lower contact upper surface axial limiting.The slip joint, lower contact also pass through track pin and track groove transmitting torque.The utility model realizes the scheme that deblocking power can be individually applied on level-one packer, has achieved the purpose that packer gradually deblocking, solves the problems, such as that the deblocking big water injection string of power easily meets card.

Description

A kind of gradually deblocking device

Technical field

The utility model relates to the solution encapsulation technique of compression packer, the gradually deblocking device of especially a kind of packer.

Background technique

The Y341 compression packer of oil-field flooding, string matching are that oil pipe and packer are connected as one, Bu Nengxiang Mutually movement, when above mentioning or transfer tubing string while stress.The deblocking mode of Y341 compression packer is above to propose or transfer tubing string solution Envelope.Single-stage deblocking power reaches 50KN or so.When multiple compression packer is used in series, deblocking power is that single-stage unseals power multiplied by grade Number, since deblocking power is big, oil pipe and packer are difficult to move up and down when operation, cause packer to be difficult to unseal, easily cause tubing string Card is met, heavy repair task need to be gone up, extend the activity duration and increases operating cost.

Application number: 201510654356.1, publication date 2018-04-03 disclose a kind of washing well formula gradually deblocking packing Device, comprising: top connection；Well-flushing cylinder barrel；Packing element axis；Packing element；Central tube；Lock；Main piston；Connector sleeve；Lower contact.The present invention The advantages of be: (1) entrance of well-flushing passage be multiple elongated crack structures, channel area of passage is sufficiently large, and can prevent big Grain solid phase impurity enters blocking internal channel, guarantees that tool inner cavity well-flushing passage is unimpeded；(2) packer well-washing channel is streamlined sets Meter, machine is miscellaneous, solid phase particles are liable to flow out, and is not easy heap accumulated plugging channel；(3) gradually deblocking mechanism is equipped with inside packer, Multistage then to carry out junior's removing seal for packer in use, higher level's packer first unseals, deblocking power does not add up when deblocking, guarantees packing Device deblocking is easy.

Application number: 201510955430.3, publication date 2018-08-10 discloses a kind of step-by-step releasable flushing packer, It includes main body bindiny mechanism, well-flushing mechanism, packing element sealing mechanism, retaining mechanism and gradually deblocking mechanism, main body bindiny mechanism Including be successively threadedly coupled top connection, central tube, central tube lower section, and connect by gradually deblocking mechanism with central tube lower section Lower contact；Well-flushing mechanism includes outer pipe connector, flushing valve and waveform spring；Packing element sealing mechanism include exterior central tube, on Sealing valve, one group of packing element, control head, the short outer cylinder of connection, upper piston and lower piston；Retaining mechanism includes lock tube, snap core pipe, connects Connector, latching valve, connector.Design is scientific and reasonable for structure of the invention, setting power reliable performance, and unsealing operation is easy, and meets The gradually deblocking demand that oil field subdivision of reservoir, multi-section multi-layer dispensing need is that a kind of gradually deblocking with higher innovation can be washed Well packer.

Application number: 201610142233.4, publication date 2017-11-17 disclose a kind of chute type gradually deblocking packer, Long slideway, short slideway and hook arm slot are provided on the lower part outer wall of upper center tube, short slideway is obliquely installed and is connected to long slideway At V-type, hook arm slot is set to long slideway side and communicates with the top of long slideway, and hook arm, hook arm top are arranged at the top of deblocking hook cylinder Portion assigns into hook arm slot, and slideway dowel ends are placed in the short slideway in long slideway and short slideway, and can in long slideway and Sliding in short slideway, and slideway pin is able to drive hook arm in long slideway and slides together.The utility model uses fixing pin Suspension is unsealed using slideway, and deblocking pulling force is low, when unsealing multiple packers, by the way of gradually deblocking, is thoroughly solved Packer needs to cut pin when deblocking, and deblocking pulling force is big, is not easy to the problem of unlocking multiple packers.

Application number: 201720841743.0, publication date 2018-01-23 disclose a kind of gradually deblocking of low deblocking load Packer, including top connection, interior exterior central tube, lower contact are set with packing element component in exterior central tube upper end, in inner central tube Retaining mechanism is arranged in lower end outer surface, and retaining mechanism is connect with exterior central tube lower end, and retaining mechanism outer cover is equipped with and sets piston Component, and it is close proximity to the lower end of packing element component, solution sealing mechanism is provided between retaining mechanism and inner central tube, interior exterior central tube uses The dental inlay shape structure of top connection end connects.Beneficial effect acquired by the utility model is to considerably reduce single-stage envelope Every the deblocking power of device, by adjusting deblocking sliding block lower end surface at a distance from hole end surface in lower contact, divide lock ball when upper lifting pipe post Grade release, realizes multiple-string packer tubing string gradually deblocking, improves packer underground deblocking reliability, reduces underground work Risk.

Application number: 201520378797.9, publication date 2015-10-21 combined type gradually deblocking packer.It includes packing Device and decapsulator, the decapsulator include top connection, deblocking pin, control piston, closing piece, central tube, lower contact, wherein institute It states central tube upper and lower part and connects the top connection, the lower contact respectively；The control piston is placed in outer tube and the central tube In the cavity of formation, it is connected by the deblocking pin with outer tube, upper end has the closing piece.The packer is without solution Offset nails on the conventional packer for proposing envelope.The decapsulator is the fluid pressure type gradually deblocking device equipped with solution sealing mechanism.The combination Formula gradually deblocking packer connects a fluid pressure type gradually deblocking device between packer makes the whole string deblocking of packer become single Gradually deblocking is used in series multiple packers to change force way when packing deblocking, and it is negative to substantially reduce deblocking Lotus securely and reliably can largely use in oilfield water extraction field.

Application number: 201721612187.6, it includes top connection that publication date 2018-05-29, which discloses gradually deblocking packer, Use non-threaded connection with central tube, top connection, upper housing and middle housing three be threadedly coupled, and with central, tubular Cheng Shanghuan Chamber, upper piston are threaded in upper ring cavity in central tube, and are fixed on housing top to unseal shear pin, play balance when suppressing Effect, well-flushing upper piston area, well-flushing piston lower portion and backbone sealing ring three form well-flushing piston, are mounted in ring cavity and play Balance, well-flushing and sealing function, upper compensating cylinder are mounted between housing lower part and exterior central tube, are played and are pressed and balance in balance The effect of packing element pressure prevents unexpected deblocking, this tool allows deblocking pin to play load-bearing effect due to using, central tube with above connect Head is connected using disengagable formula, and uses upper and lower pressure balance structure, can bear big pressure difference and can multistage connection work, solve Feng Shike plays the purpose of multistage gradually deblocking, greatly improves work efficiency, and reduces the labor intensity of worker.

Application number: 201611113252.0, publication date 2018-06-12 disclose a kind of hierarchical process tubing string gradually deblocking Release device belongs to oil recovery gas recovery technical field.The hierarchical process tubing string gradually deblocking release device is fixed at point Between the two neighboring packer of layer process tubing string comprising: top connection, housing, central tube, gear cap, sliding pin and classification are cut Portion.The present invention between the two neighboring packer of hierarchical process tubing string by being arranged the present invention, the upper end of housing and central tube Between by classification cutting portion connection, when be classified cutting portion cut after, top connection can drive housing with respect to central tube movement, be The packer that deblocking is located at present invention top provides stroke, so that all packers for unsealing hierarchical process tubing string simultaneously are avoided, Mentioned in reduction fishing tool with rise hierarchical process tubing string needed for power, has reduced go out hierarchical process tubing string difficulty, to drop A possibility that low oil-water well overhaul.

Application number: 201420367522.0, publication date 2014-12-31 disclose a kind of small diameter washable well gradually deblocking Packer is equipped with positioning sleeve (18), upper seating nipple (3) and lower well-flushing piston between the lower end and connector sleeve (7) of sealing piston (2) (6) lower section, which is equipped with, is sleeved on the external fixed ring (20) of connector sleeve (7), is equipped with sliding sleeve above block plate (8) and is mounted in fixed ring (20) in and sliding sleeve is mounted in connector sleeve (7) external pressure-bearing piston (21).Its diameter is smaller, be suitable for casing deformation well, deblocking at This and deblocking difficulty are lower.Since diameter is smaller, do not influenced by set change.It is unsealed using gradually deblocking mode, unseals upper lifting force amount Smaller, deblocking is easier.It does not need to can be achieved with unsealing using large tonnage crane, operates more convenient.It, which has, sets Reliably, practical simple, deblocking power is small, and easy to operate, compact-sized, rationally distributed, the packing element service life is long, can be with well-flushing, using more Convenient advantage.

Application number: 201320419084.3, publication date 2013-12-04 one kind can bounce back gradually deblocking packer, main to solve Certainly existing packer often occurs packer at work and does not unseal, and tubing string pulls out motionless problem.It is characterized by: lower contact with Lower center tube internal screw thread connects, and is equipped with setting piston in lower contact；The setting piston upper end is equipped with circlip set, circlip set Inside is successively arranged circlip and setting pin；The top of the lower contact is fixedly connected with rubber tube seat and packing element；The packing element with It is successively arranged strength cam mechanism and gradually deblocking mechanism between internal upper center tube, packing element upper end is fixedly connected with stopper, Stopper is connect with the well-flushing piston, and well-flushing internal piston corresponding position is equipped with well-flushing entrance, the outside of the well-flushing piston It is cased with outer work set, is equipped with counter balance pocket in the outer work set, and external screw thread connects top connection.Using multilayer can be made after the present apparatus Section water injection well gradually deblocking, while reducing and above proposing load, it is difficult can fundamentally to solve the problems, such as that multi-section multi-layer water injection well pulls out envelope.

Utility model content

The purpose of the utility model is to provide a kind of gradually deblocking devices, the tubing string between two packers by original one Structural reform has dressed up two bodies for capableing of opposite sliding, realizes the scheme that deblocking power can be individually applied on level-one packer, reaches The purpose of packer gradually deblocking solves the problems, such as that the deblocking big water injection string of power easily meets card.

The purpose of this utility model can be achieved by the following technical measures:

The gradually deblocking device includes slip joint, lower contact, and the lower contact upper end is protruded into slip joint, and under connect Head upper end outer wall and slip joint inner wall are to be slidingly sealed state.

The purpose of this utility model can be also achieved by the following technical measures:

The slip joint lower port installs limit sleeve, and limit sleeve constitutes axial limiting to lower contact.

The limit sleeve screw thread type is connected to slip joint lower port, and the lower contact outer wall opens up the first limiting stand, institute It states limit sleeve inner wall and opens up the second limiting stand, the first limiting stand lower end surface is to the second limiting stand upper surface axial limiting.

The slip joint inner wall opens up third limiting stand, and third limiting stand lower end surface axially limits lower contact upper surface Position.

It further include fixing sleeve, track pin, track groove, the limit sleeve, fixing sleeve, track pin, track groove structure together At torque conduction mechanism, limit sleeve lower end screw thread type is connected and fixed set, fixing sleeve inner wall and limit sleeve lower part attachment rail Pin, track pin slide against in the axial trajectory slot that lower contact outer wall opens up.

The slip joint upper port opens up hickey, and lower contact lower port opens up hickey.

Lower contact upper end outer wall opens up seal groove, installs sealing ring in seal groove, sealing ring to lower contact upper end outside Wall and the sealing of slip joint inner wall.

The utility model has the advantages that compared with prior art

The utility model is to design a kind of a kind of gradually deblocking device for filling the water Y341 compression packer, is installed on packing Under device, making every grade of packer has an independent downlink spatial, deblocking power can independent role on every level-one packer, it is real Independent deblocking is applied, is not influenced by packer series, solves the problems, such as that the deblocking big water injection string of power easily meets card.

Detailed description of the invention

Fig. 1 is the structure sectional view of the utility model embodiment.

In figure: slip joint 1, limit sleeve 2, sealing ring 3, fixing sleeve 4, track pin 5, track groove 6, lower contact 7.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model It clearly and completely describes, it is clear that described embodiment is only the utility model a part of the embodiment, rather than whole realities Apply example.Based on the embodiments of the present invention, those of ordinary skill in the art institute without making creative work The every other embodiment obtained, fall within the protection scope of the utility model.

Referring to Fig. 1, the utility model provides a kind of technical solution: the gradually deblocking device include slip joint 1, under connect First 7, the lower contact upper end is protruded into slip joint, and lower contact upper end outer wall and slip joint inner wall are to be slidingly sealed shape State.Lower contact upper end outer wall opens up seal groove, installs sealing ring 3 in seal groove, sealing ring to lower contact upper end outer wall and The sealing of slip joint inner wall.

The slip joint lower port installs limit sleeve 2, and limit sleeve constitutes axial limiting to lower contact.

The limit sleeve screw thread type is connected to slip joint lower port, and the lower contact outer wall opens up the first limiting stand, institute State limit sleeve inner wall and open up the second limiting stand, the first limiting stand lower end surface by, to the second limiting stand upper surface axial limiting.

The slip joint inner wall opens up third limiting stand, and third limiting stand lower end surface axially limits lower contact upper surface Position.

Torque conduction mechanism includes limit sleeve 2, fixing sleeve 4, track pin 5, track groove 6, limit sleeve lower end screw thread Formula is connected and fixed set 4, fixing sleeve inner wall and limit sleeve lower part attachment rail pin 5, and track pin slides against lower contact outer wall and opens If axial trajectory slot 6 in.

The slip joint upper port opens up hickey, and lower contact lower port opens up hickey.

The upper end of lower contact 7 is inserted into 1 inner hole of slip joint and is sealed by O-ring seal 3,2 sets of limit sleeve In the path outer circle of lower contact 7, the internal screw thread of the upper end is connect with the external screw thread of 7 lower end of slip joint, and track pin 5 is pacified Radial hole loaded on 2 lower end of limit sleeve and in the axial groove 6 of lower contact 7, the internal screw thread of fixing sleeve 4 and 2 lower end of limit sleeve it is outer It is threadedly coupled.

Specific implementation method is: decentralization deblocking when, lower contact 7 is stationary, 1 downlink of slip joint, drive limit sleeve 2, Along 6 DL synchronization of track groove, sealing ring 3 implements interior external seal for fixing sleeve 4, track pin 5.

The utility model is to design a kind of a kind of gradually deblocking device for filling the water Y341 compression packer, is installed on packing Under device, making every grade of packer has an independent downlink spatial, deblocking power can independent role on making every level-one packer, Implement individually deblocking, do not influenced by packer series, solves the problems, such as that the deblocking big water injection string of power easily meets card.

In the description of the present invention, it should be understood that temporald eixis or positional relationship are based on the figure Orientation or positional relationship is merely for convenience of description the utility model, rather than the device or element of indication or suggestion meaning must There must be specific orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims (7)

1. a kind of gradually deblocking device, which is characterized in that including slip joint, lower contact, sliding is protruded into the lower contact upper end In connector, and lower contact upper end outer wall and slip joint inner wall are to be slidingly sealed state.

2. a kind of gradually deblocking device according to claim 1, which is characterized in that the slip joint lower port installation limit Position set, limit sleeve constitute axial limiting to lower contact.

3. a kind of gradually deblocking device according to claim 2, which is characterized in that the limit sleeve screw thread type is connected to cunning Dynamic connector lower port, the lower contact outer wall open up the first limiting stand, and the limit sleeve inner wall opens up the second limiting stand, the first limit Position platform lower end surface is to the second limiting stand upper surface axial limiting.

4. a kind of gradually deblocking device according to claim 1 or 2 or 3, which is characterized in that the slip joint inner wall is opened If third limiting stand, third limiting stand lower end surface is to lower contact upper surface axial limiting.

5. a kind of gradually deblocking device according to claim 2 or 3, which is characterized in that further include fixing sleeve, track pin Nail, track groove, the limit sleeve, fixing sleeve, track pin, track groove constitute torque conduction mechanism together, under the limit sleeve Terminal filament button is connected and fixed set, and fixing sleeve inner wall and limit sleeve lower part attachment rail pin, track pin slide against outside lower contact In the axial trajectory slot that wall opens up.

6. a kind of gradually deblocking device according to claim 1 or 2 or 3, which is characterized in that the slip joint upper port Hickey is opened up, lower contact lower port opens up hickey.

7. a kind of gradually deblocking device according to claim 1 or 2 or 3, which is characterized in that lower contact upper end outer wall Seal groove is opened up, sealing ring is installed in seal groove, sealing ring seals lower contact upper end outer wall and slip joint inner wall.