SU1601341A1 - Packer - Google Patents

Abstract

The invention relates to the mining industry and is intended to isolate uncovered productive objects in wells. The goal is to increase the reliability of the packer, to ensure that it can absorb bilateral loads and ease of operation. For this purpose, in the upper cylinder 1, a support assembly is installed in the form of a collet 13 with tapered protrusions on the end. Between the cylinder 1 and the core 4 is placed a step sleeve 14, made with a shear element for fixing in the initial position. The sleeve 14 has a radial channel blocked by a check valve. Dies 18 located between the core and the middle cylinder are hinged to the core 4. The latter has an annular protrusion on the inner surface to interact with the dies 18. The core 4 is made with a radial hole. The packer has a cup 5 made with a conical protrusion for interacting with the conical protrusions of the support assembly. The core 4 and the sleeve 14 form an annular chamber. It communicates through the radial hole in the core 4 with the body cavity. The cylinder 1 has a valve disposed between them and the cup to communicate the chamber with the space behind the cylinders. The axial movement of the cylinder 1 and its associated parts becomes possible due to the fact that the sleeve 14, being in the fixed extreme position, does not prevent the protrusions of the collet 13 from being pressed against the core 4 under the action of the axial load created by the protrusion of the cylinder 1. that the outer threaded protrusion of the sleeve 14, abutting against the inner threaded protrusion of the sleeve 13, holds the latter in place when fluid flows from the tubing to the annular cavity. 1 hp ff, 13 ill.

Description

shear element for fixing in the use of - 1 one position. The sleeve 14 has a radial channel blocked by a reverse fapan. The cores 4 are hinged llB dies located between it and the middle cylinder. The latter has an annular protrusion on the inner 1 surface for the interaction of the G plait 18. The core 4 is made With a radial hole. The packer has a Glass 5, made with a conical protrusion to interact with the cones of the protrusions of the reference node. The heart 4 and the sleeve 14 form an annular chamber. It communicates through the adial opening in the core 1 with the body cavity. Cylinder 1 has

a valve disposed between it and the cup for communicating the chamber with the space behind the cylinders. The axial movement of the cylinder 1 and its associated parts becomes possible due to the fact that the sleeve 14, being in the fixed extreme position, does not prevent the collet lugs from being pressed 13

to the core 4 under the action of the axial load created by the protrusion of the cylinder 1. This is facilitated by the fact that the external threaded protrusion of the sleeve 14, abutting the internal threaded protrusion of the sleeve 13, holds the latter in place with the flow of liquid from the column into the annular cavity. 1 3.p.f-ly, 13 silt,

 The invention relates to mining 1 | 1, in particular to devices (gtvam) before isolating uncropped production objects in wells, and can be used, for example, while simultaneously operating several layers separately on a single elevator.

The purpose of the invention is to increase the reliability of the packer operation, to ensure that HarpV30K can accept two-way HarpV30K and ease of operation.

FIG. 1 shows a packer, a general view; in fig. 2 shows a section A-A in FIG. in fig. 3 - section-BB in FIG. C in FIG. 4 shows section B-B in FIG. one; in fig. 5 shows the node I in FIG. one; in fig. 6 a section of YYY in FIG. five; in fig. 7 is a section d-d in fig. five; in fig. 8 — node II in FIG. 5} in FIG. 9 shows section EE of FIG. eight; in fig. 10 — node III in FIG. one; in fig. 11 - MF section on 4ig. ten; on 4ig. 1-2 is a view 3 in FIG. 10 in FIG. 13 - AND section on 4ig. ten.

The packer contains a hollow body in the form of interconnected upper 1, middle 2, and lower 3 cylinders. Between them are mounted on a sectional core 4, rigidly connected with the glass 5, the slips 6 with the locking ring 7, the sealing cuffs 8 and 9, the spring-loaded locking elements 10 with springs 11 and the piston-12. The packer also has a support unit mounted in the upper cylinder 1 in the form of collet 13 (split sleeve) with

0

with a tapered protrusion at the end, placed between the cylinder and the core 4 speed sleeve 14, made with a shear element (pin) 15 for fixing it in the initial position. The sleeve 14 is made with a radial channel 16 blocked by a check valve 17. With the core 4, the plates 18 are hingedly connected, which are located between the core 4 and the middle cylinder 2, which has an annular protrusion on the inside surface to interact with the plates 18, the Core 4 is made with a radial bore 19, and a cup 5 with a conical protrusion for engaging with the conical protrusions of the support assembly. The core 4 and the sleeve 14 form an annular chamber 20, which is connected through an opening 19 in the core 4 -c of the housing cavity. The upper cylinder 1 has a valve 21 located between it and the glass 5 to communicate the chamber 20 with the space behind the cylinders. The outer surface of the glass 5 and the inner surface of the cylinder 1 are made in 3) 1 in the form of polyhedrons with the possibility of forming channels between them

The packer works as follows, When installing a packer in a well, the conditional pass in the tubing string (n. Kt) below the packer should be closed. The overlap of the conditional passage is achieved in two ways: by throwing a ball of the appropriate size into an elevator column;

5160134

by lowering the plug with the help of cable technology and its subsequent removal from the well.

The ball or cork is mounted on the shear bar, located below the packer. Then, in the tubing, the unit increases the pressure to a design value (8-10 MPa), at which the saddle pins are cut off. The interaction of packer elements with the following. With increasing pressure in nct. elements of the closed part of the packer are fixed. The immobility of the core elements is ensured by the fact that cylinder I, abutting with its inner annular protrusion 22, of the support element (collet) 13, wedged between the cone 23 of the sleeve 14

with the core 4, and, in the way, 4xirovat a reliable engagement of the clips 6 with the casing. The shsinder 2 5 and the sleeve 27, having received a limitation during axial movement, after the shrinkage of the slips 6, becomes a fixed support for the subsequent compression of the cuffs 8 and 9. The overpressure in n. and 10, respectively, in the cavity 32, equal to the calculated one (8-10 MPa), acting on the cuff 30, moves the cylinder 3 together with the supporting sleeve 28 and the locking elements 10 15 placed inside it to the extreme upper part. In this case, the cuffs 8 and 9 are deformed, sealing the annular passage between the packer and the casing, and the locking elements 10 fix the position of the cuffs

and the slopes of the butt is 24 cups 5, holding 20 ° 9 °, the ring 7 lives from the axial displacement;

The design of the packer. Provides hydraulic control of its functional. This indicates.

NIN, thus creating conditions for pushing the slips 6 under the load on the onopiroe ring 25. The displacement of the support ring 25 depends on the position of the cylinder 2, which, resting with its inner annular protrusion 26 in the flap 18, is in its lowest position until , while the pressure in the lift column will exceed the calculated value y (1.2 MPa). Such fixation of the initial position of the cylinder 2 allows using the sleeve 27 to hold the cuffs 8 and 9, as well as the lower support ring-sleeve 28 and the cylinder 3 in the extreme cutting position.

At a pressure in n.kt., above the calculated value (1.2 MPa), the pin 29, the piston 12, is cut,

moving to the uppermost position, squeezes the cuff 30. The plates 18, freed from the supporting conical surface of the piston 12, under the action of

That the ikoverovat and decompressor 25 processes can be performed both in a muffled, only and in an existing well. However, it is worth noting that the conditions for hydraulic control of packer nodes by a driver are better to be carried out in a well bore. This is primarily due to the fact that as OSSNOPPN-1 of the stagur element of the packer locking part, an open sleeve-collet 13 is used, the jamming j of which is also influenced by the weight of the tubing string above the packer. Therefore, when unpacking, it is advisable to unload the packer from the weight of the nc. by means of a lift, and this operation, as is known, 40 requires killing the well.

Taking this into account, when unpacking, it is first necessary to shut off the well, and then remove all the rest. From the spring 31 and the axial force created by the preliminary operation of the cylinder 2, it is pressed to the heart 4. As a result, the gap between the glass is 5 and the sleeve 33 and Thus, create better conditions for the sleeve 13 to exit from the wedged state. 50 Then, using the unit, the pressure in the annulus increases. The presence in the locking part of the packer of the sealing ring of the valve 21 with the spring allows the gaps between the cup 5 and the sleeve 33 to pass the fluid from the annulus into the closed coreline D 2 and is released from the engagement with the core 4 and, moving upwards, slides the slips 6 to complete them. into the wall of the casing. When this occurs, the locking elements 10 simultaneously move along the core 4. Collapsed by a rubber cuff 30, which in this case performs not only the function of a compactor, but 55

and the role of the spring to the locking elements. 10, the latter have the ability to completely choose the gap when engaged i

flattery 34.

With an increase in pressure in the annulus above the calculated value (5.0 MPL) per

with the core 4, and, in the way, 4xirovat a reliable engagement of the clips 6 with the casing. The shsinder 2 5 and the sleeve 27, having received a limitation during axial movement, after the shrinkage of the slips 6, becomes a fixed support for the subsequent compression of the cuffs 8 and 9. The overpressure in n. and 10, respectively, in the cavity 32, equal to the calculated (8-10 MPa), acting on the cuff 30, moves the cylinder 3 together with the support sleeve 28 and the locking elements 10 15 placed inside it to the extreme upper level. In this case, the cuffs 8 and 9 are deformed, sealing the annular passage between the packer and the casing, and the locking elements 10 fix the position of the cuffs

20 Г 9 ° ° w and w.

The design of the packer. Provides hydraulic control of its functional. This indicates

That the ikoverovat and decompressor 25 processes can be performed both in a muffled, only and in an existing well. However, it is worth noting that the conditions for hydraulic control of packer nodes by a driver are better to be carried out in a well bore. This is primarily due to the fact that as OSSNOPPN-1 of the stagur element of the packer locking part, an open sleeve-collet 13 is used, the jamming j of which is also influenced by the weight of the tubing string above the packer. Therefore, when unpacking, it is advisable to unload the packer from the weight of n.kt. by means of a lift, and this operation, as is known, 40 requires killing the well.

Taking this into account, when unpacking, it is first necessary to shut off the well, and then remove all the rest. Packing Preliminary operation as required; A gap between the glass 5 and the sleeve 33 and, thus, create better conditions for the output of the sleeve 13 from the jammed state. Then, by means of the unit, the pressure in the annulus is increased. The presence in the locking part of the packer of the sealing ring of the valve 21 with the spring allows for the gaps between the cup 5 and the sleeve 33 to pass the liquid from the annulus into the closed one to eat 34.

With an increase in pressure in the annulus above the calculated value (5.0 MPL) per

crynekqarpro account of the execution of the mating surfaces of the core 4 and the sleeve 14 occurs, the cut of the pin 15.. And the result is that the sleeve 14 shifts- with | to the lowest position. The spring 15 is buried under the action of the spring ring uja 35 and enters the link with the pin 36, fixing the extreme lower position of the sleeve 14 on the core HJiKe 4i At the same time, the external thread (sleeve) of the sleeve 14 closely fits the internal to a carving vyst-X1u the plug

K | 13v

 After that, with the help of the unit, the pressure in the tubing is increased, and the annulus must then be removed. The fluid through the hole 19 comes into the chamber 20, then through KA10

5 and the sleeve 33, and on the other - between the sleeve 14 and the cylinder 1, the cavity 34 with the annular space,

The locking elements located inside the support ring 7 .10 with springs 11 fix the position of the displaced parts of the closed assembly, which is very important when removing the packer from the well, when it is necessary to prevent the packer from self-deforming.

Formula

the invention

15

1. A packer containing a hollow body in the form of interconnected upper, middle, and lower cylinders, between which are mounted on a sectional core rigidly connected to the mill 16 in the sleeve 14 and sealing 20 by a canal, snap locks with a retaining ring, 3heMeHT valve 17 with a spring post-sealing cuffs, spring-loaded into a closed annular cavity 34.the locking elements and the piston, o r Pressure increase -in cavity 34 you axial movement of the cylinder 1

l and h and y u and with the fact that, with a view

orhos .v, couu .gs / syshstt tsi.iiadadFc ibyshenie reliability of the packer,

to the extreme position which at the same time is 25 enabling the perception

By means of the locking ring 7, the withdrawal 6 of the engagement with the casing ring, i.e. the packer is exempt from the climber. At the same time, the support ring 25 and the associated cylinder 2 and sleeve 27 are moved to the highest position, freeing the collet 8 and 9 from the compressed state, Tj.e. depressurization occurs

they are bilateral. loads and ease of operation, it is equipped with a support unit mounted in the upper cylinder in the form of a collet with taper protrusions at the end placed between it and the core with a stepped sleeve made with a shear element for fixation in the initial position, with a radial channel and non-return valve dp

they are bilateral. loads and ease of operation, it is equipped with a support unit mounted in the upper cylinder in the form of a collet with taper protrusions at the end placed between it and the core with a stepped sleeve made with a shear element for fixation in the initial position, with a radial channel and non-return valve dp

 the passage between the packer and the casing 35 closes this channel, and flattens it.

n (oh column. Lower support ring 218 and cylinder 3 remain fixed at this time.

The axial movement of the cylinder 1 and the etals associated with it becomes possible due to the fact that the sleeve 14, being in the extreme position fixed by the PGTs 15, does not 1} repress the pressing of the protrusions of the sleeve

Articulated with the core and placed between the last and middle cylinder, which has an annular protrusion on the inner surface for interaction 40, with raiatacs, the core being made with a radial bore, and the glass with a conical protrusion for interacting with the conical protrusions of the support node, the core and st. 1: 3 to the core 4 under the action of the axial 45 penchate bushing form an annular caa load, created by the protrusion 22 of the cylinder, which is communicated by

a radial hole in the core with the V cavity of the housing, and the upper cylinder has a valve placed between it and the stack of 50 lioM to communicate the annular chamber with the space behind the cylinders;

l1indra 1. This is facilitated by the fact that the inner thread lug of the sleeve rests on the internal thread, the jaw lug of the sleeve 13 keeps the last in place with the flow of fluid and the lift column into the cavity 34.

 Step-; execution of the outer diameter of the glass 5 and internal di2. The packer according to claim 1, about the tl and h. Of the optics of the shchindra 1, when transferring to the Pi with the fact that the outer surface of the external parts of the sleeve 33 is the inner edge of the cylinder 1 s tMe to report through formed openings on the side between the glass

The upper cylinder is made in the form of polyhedra with the possibility of forming channels between them.

5 and the sleeve 33, and on the other - between the sleeve 14 and the cylinder 1, the cavity 34 with the annular space,

The locking elements located inside the support ring 7 .10 with springs 11 fix the position of the displaced parts of the closed assembly, which is very important when removing the packer from the well, when it is necessary to prevent the packer from self-deforming.

Formula

the invention

1. A packer containing a hollow body in the form of interconnected upper, middle and lower cylinders, between which are mounted on a sectional core rigidly connected to the glass, slips with a locking ring, sealing cuffs, spring-loaded locking elements and a piston, about t and h a y u u and so that, with a view

they are bilateral. loads and ease of operation, it is equipped with a support unit mounted in the upper cylinder in the form of a collet with taper protrusions at the end placed between it and the core with a stepped sleeve made with a shear element for fixation in the initial position, with a radial channel and non-return valve dp

Shut down this channel, and die.

Articulated with the core and placed between the latter and the middle cylinder, which has an annular protrusion on the inner surface for interaction 40, with raiatacs, the core being made with a radial bore, and the glass with a conical protrusion for interacting with conical heights2. A packer according to claim 1, about tl and h. The uppermost cylinder features are made in the form of polyhedra with the possibility of forming channels between them.

Aa

FIG. four

FIG. five

Г С

Phage. 6

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FIG. 8

Dl

7

FIG. 9

F,

L

Phage. YU

r-; r

11 and - and

FIG. 13

Editor V. Bugrenkova

Compiled by A.Simetsk

Tehred L. Serdyukova. Proofreader L.Patai

Order 3257

Circulation 471

VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab. 4/5

Production and Publishing Combine Patent, Uzhhorod, cn. Gagarin, 101

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Claims (6)

The invention relates to the mining industry and is intended for isolation of open productive objects in wells. The goal is to increase the reliability of the packer, providing the possibility of perception (bilateral loads and ease of use. To do this, in the upper cylinder 1 there is a support unit in the form of a collet 13 with conical protrusions at the end. Between the cylinder 1 and the core 4 is placed a stepped sleeve 14 made with (L oo 4 ^ shear element for fixing in the initial position. The sleeve 14 has a radial channel blocked by a check valve. The dies 18 pivotally located between it and the middle cylinder are pivotally connected to the core 4. Poled Tjnff has an annular protrusion on the inner surface for the interaction of β die 18. Core 4 is made β with a radial hole. The packer has a phthacan 5 made with a conical Access for interacting with the conical protrusions of the Support node. The core 4 and the sleeve 14 form an annular 15 chamber. It communicates through a radial hole in the core 4 with the cavity of the housing. Cylinder 1 has four . a valve placed between it and the glass to communicate with the chamber behind the cylinders. The axial movement of the cylinder 1 and related parts becomes possible due to the fact that the sleeve 14, being in a fixed extreme position, does not prevent the protrusions of the collet 13 from being pressed against the core 4 under the action of the axial load created by the protrusion of the cylinder 1. This is also facilitated by the fact that the outer the threaded protrusion of the sleeve 14, abutting against the internal threaded protrusion of the sleeve 13, holds the latter in place when fluid flows from the elevator column into the annular cavity. 1 s.p., f-ly, 13 silt, The invention relates to the mining industry, in particular to devices for isolation of exposed product objects in wells, and can be used, for example, with simultaneous separate operation of several layers in a single-row bodice. that one. The purpose of the invention is to increase the reliability of the packer, providing the ability to perceive bilateral loads and ease of operation. ' In FIG. 1 shows a packer, general view; in FIG. 2 - section aa in figure 1; in FIG. 3 is a section BB in FIG. one; in FIG. 4 is a section bb in FIG. 1; in FIG. 5 - node I in FIG. one; in FIG. 6 section GG in FIG. 5; in Fig. 7 - section DD in Fig. 5; in FIG. 8 - node II in Fig. ' 5; FIG. 9 is a section EE in FIG. 8; in FIG. 10 - node III in FIG. one; in FIG. 11 - section MF on