CN212535607U - Self-locking packer capable of flushing well - Google Patents

Abstract

The utility model provides a washable well self-locking packer, including center tube, self-locking device, activity setting at the top connection and the lower clutch of center tube both ends, the center tube includes upper center tube, lower center tube, the outside cover of upper center tube is equipped with the packing element, the upper portion of upper center tube is equipped with the well washing valve, the lower part of upper center tube is equipped with the propulsion cylinder number one, be equipped with well washing passageway between the propulsion cylinder number one and the well washing valve, self-locking device includes a plurality of No. two springs, locking pieces, shearing housing that top-down sets gradually between the propulsion cylinder number two and the lower clutch; the utility model discloses all be equipped with a plurality of sealing washer between the case of well-flushing valve and the shell of last center tube, well-flushing valve for the well-flushing valve is opened or is closed the in-process and can not take place the phenomenon that drops under the high-speed liquid erodees, has protected sealed can not become invalid, through the realization lock dead function that self-lock device can be stable, makes the packer can stabilize the setting.

Description

Self-locking packer capable of flushing well

Technical Field

The utility model relates to a packer field specifically is a washable well auto-lock packer.

Background

But now the flushing valve of well-flushing packer that the oil field used adopts O type sealing washer sealed more, opens or closes the in-process at the flushing valve and take place the obscission under high-speed liquid erodees, and the packer adopts annular lock tooth structure to carry out the packer auto-lock more moreover, and this is high to material and thermal treatment requirement, in case lose elastic deformation ability, then can't realize the lock function of dying for the packer can not sit and seal.

SUMMERY OF THE UTILITY MODEL

The technique that exists is not enough to the aforesaid, the utility model aims at providing a washable well auto-lock packer has solved the well-flushing valve and has opened or close the in-process and easily take place the obscission under high-speed liquid erodees, the unable lock function that realizes of auto-lock structure for the packer can not sit the problem of sealing.

In order to solve the technical problem, the utility model adopts the following technical scheme:

a washable well self-locking packer comprises a central tube, a self-locking device, an upper joint and a lower joint, wherein the upper joint and the lower joint are movably arranged at two ends of the central tube, the central tube comprises an upper central tube and a lower central tube arranged at the bottom end of the upper central tube, a rubber sleeve is sleeved outside the upper central tube, a well washing valve is arranged on the upper portion of the upper central tube, a first pushing cylinder is arranged on the lower portion of the upper central tube, a well washing channel is arranged between the first pushing cylinder and the well washing valve, a plurality of well washing liquid inlets are formed in the well washing valve, a plurality of well washing liquid outlets are formed in the first pushing cylinder, a plurality of springs are arranged between the well washing valve and the upper central tube, a plurality of sealing rings are arranged between a valve core of the well washing valve and the upper central tube, a sealing ring is further arranged between a valve core of the well washing valve and the side wall of the well washing channel, and a plurality of sealing rings are also arranged between, the top of lower center tube is equipped with the piston, just the piston respectively with the outer wall of last center tube the inner wall looks butt of a propulsion jar, the lower extreme of a propulsion jar is equipped with propulsion jar No. two, No. two propulsion jars with be equipped with the piston cylinder No. two down between the center tube, self-lock device includes that top-down mutual butt sets up in proper order No. two propulsion jars with No. two springs of a plurality of, locking piece, shearing cover between the lower clutch, be equipped with the deblocking pin on the shearing cover, be equipped with in No. two propulsion jars with the corresponding locking tooth of locking piece, the end of No. two propulsion jars is equipped with the setting pin.

Preferably, the side walls of the upper central tube and the lower central tube are respectively provided with a liquid inlet hole communicated with the first pushing cylinder and the second pushing cylinder.

The beneficial effects of the utility model reside in that: all be equipped with a plurality of sealing washer between the case of well-flushing valve and the shell of last center tube, well-flushing valve for the well-flushing valve is opened or is closed the in-process and can not take place the phenomenon that drops under the high-speed liquid erodees, has protected sealed can not become invalid, through the realization lock function that self-lock device can be stable, makes the packer can stabilize the setting.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a washable self-locking packer provided in an embodiment of the present invention;

FIG. 2 is a schematic diagram of a well flushing valve;

fig. 3 is a schematic structural view of the self-locking device.

Description of reference numerals:

1-upper joint, 2-flushing valve, 3-rubber cylinder, 4-flushing channel, 5-upper central pipe, 6-first pushing cylinder, 7-flushing fluid outlet, 8-first piston, 9-lower central pipe, 10-second piston cylinder, 11-second pushing cylinder, 12-setting pin, 13-lower joint, 14-second spring, 15-locking block, 16-shearing sleeve, 17-deblocking pin, 201-flushing fluid inlet, 202-spring, 203-sealing ring, 204-valve core and 205-special-shaped sealing ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that in the description of the present invention, the terms "in", "up", "down", "horizontal", "inner", etc. indicate directions or positional relationships based on those shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, a detachable connection, or an integral connection; may be a mechanical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

As shown in fig. 1 to 3, a washable well self-locking packer comprises a central tube, a self-locking device, an upper joint 1 and a lower joint 13 movably arranged at two ends of the central tube, the central tube comprises an upper central tube 5 and a lower central tube 9 arranged at the bottom end of the upper central tube 5, a rubber tube 3 is sleeved outside the upper central tube 5, a well washing valve 2 is arranged at the upper part of the upper central tube 5, a first pushing cylinder 6 is arranged at the lower part of the upper central tube 5, a well washing channel 4 is connected between the first pushing cylinder 6 and the well washing valve 2, a plurality of well washing liquid inlets 201 are arranged on the well washing valve 2, a plurality of well washing liquid outlets 7 are arranged on the first pushing cylinder 6, a plurality of springs 202 are arranged between the well washing valve 2 and the upper central tube 5, a plurality of sealing rings 203 are arranged between a valve core 204 of the well washing valve 2 and the upper central tube 9, a sealing ring 205 is further arranged between the valve core 204 of, the sealing rings 203 and the special-shaped sealing rings 205 play roles of fixing and sealing, so that the well flushing valve 2 does not fall off under high-speed liquid flushing in the opening or closing process, the sealing is protected from failure, a plurality of sealing rings 230 are also arranged between the valve core 204 of the well flushing valve 2 and the shell of the well flushing valve 2, the top end of the lower central tube 9 is provided with a first piston 8, the first piston 8 is respectively abutted against the outer wall of the upper central tube 5 and the inner wall of the first pushing cylinder 6, the lower end of the first pushing cylinder 6 is provided with a second pushing cylinder 11, a second piston cylinder 10 is arranged between the second pushing cylinder 11 and the lower central tube 9, the self-locking device comprises a plurality of second springs 14, locking blocks 15 and shearing sleeves 16 which are sequentially arranged between the second pushing cylinder 11 and the lower connector 13 from top to bottom, the shearing sleeve 16 is provided with deblocking pins 17 for deblocking, the second pushing cylinder 11 is internally provided with locking teeth corresponding to the locking blocks 15, the tail end of the second pushing cylinder 11 is provided with a setting pin 12 for setting.

Furthermore, the side walls of the upper central tube 5 and the lower central tube 9 are respectively provided with a liquid inlet hole communicated with the first propelling cylinder 6 and the second propelling cylinder 11.

When the packer is used, the packer is lowered to a designed position, a certain pressure value is suppressed in an oil pipe, well fluid enters the first pushing cylinder 6 and the second pushing cylinder 11 through liquid inlet holes formed in the upper central pipe and the lower central pipe, the first piston 8 and the second piston 10 drive the first pushing cylinder 6 and the second pushing cylinder 11 to cut off the setting pin to move upwards, the rubber barrel 3 is compressed to form an annular space, at the moment, locking teeth in the second pushing cylinder 11 move to the position of the locking block 15 and are mutually meshed with the locking block 15 to prevent the second pushing cylinder 11 from moving reversely, the locking block 15 is always attached to the inclined surface of the shearing sleeve 16 under the action of the second spring 14, the larger the rebound force is, the tighter the locking force is, failure possibility does not exist, and the setting is more reliable under the rebound force applied to the second pushing cylinder 11 by the rubber barrel 3. After the packer is sealed, the packer is vertically sealed, when backwashing is needed, flushing fluid acts on a valve core 204 of a flushing valve 2 through a flushing fluid inlet 201, when the pressure of the flushing fluid in the sleeve is 1-2 MPa higher than the pressure in the oil pipe, the flushing valve core 204 is pushed to move upwards, and the flushing fluid is discharged through a flushing fluid outlet 7 through a flushing channel 4, so that the backwashing operation is completed. And lifting the pipe column, transmitting the acting force of the rubber sleeve 3 and the inner wall of the casing to the second pushing cylinder 11, shearing the deblocking pin 17 under the action of the locking block 15, rebounding after the rubber sleeve 3 loses constraint, continuously lifting the pipe column, and deblocking the packer.

The utility model provides a design all is equipped with a plurality of sealing washer between the case of well-flushing valve and the shell of last center tube, well-flushing valve for the well-flushing valve is opened or is closed the in-process and can not take place the phenomenon that drops under the high-speed liquid erodees, has protected sealed can not become invalid, through the realization lock function of dying that self-lock device can be stable, makes the packer can stabilize and sit and seal.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (2)

1. A washable well self-locking packer comprises a central tube, a self-locking device, an upper joint and a lower joint, wherein the upper joint and the lower joint are movably arranged at two ends of the central tube, the central tube comprises an upper central tube and a lower central tube arranged at the bottom end of the upper central tube, the outer side of the upper central tube is sleeved with a rubber tube, a washable well valve is arranged at the upper part of the upper central tube, a first pushing cylinder is arranged at the lower part of the upper central tube, a washable well channel is arranged between the first pushing cylinder and the washable well valve, a plurality of washable well liquid inlets are arranged on the washable well valve, a plurality of washable well liquid outlets are arranged on the first pushing cylinder, a plurality of springs are arranged between the washable well valve and the upper central tube, a plurality of sealing rings are arranged between the valve core of the washable well valve and the upper central tube, and a special-shaped sealing ring is arranged between the valve core of, the valve core of well-flushing valve with also be equipped with a plurality of between the shell of well-flushing valve the sealing washer, the top of center tube is equipped with the piston down, just the piston respectively with the outer wall of last center tube the inner wall looks butt of a propulsion jar, the lower extreme of a propulsion jar is equipped with No. two propulsion jars, No. two propulsion jars with be equipped with No. two piston cylinders down between the center tube, self-lock device includes that top-down sets gradually No. two propulsion jars with a plurality of No. two springs, locking block, shearing housing between the lower clutch, be equipped with the deblocking pin on the shearing housing, be equipped with in No. two propulsion jars with the corresponding lock tooth of locking block, the end of No. two propulsion jars is equipped with the seat and seals the pin.

2. The self-locking packer capable of washing the well as defined in claim 1, wherein the side walls of the upper central tube and the lower central tube are respectively provided with a liquid inlet hole communicated with the first propulsion cylinder and the second propulsion cylinder.

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