Drillable packer

FIELD: oil and gas industry.

SUBSTANCE: drillable packer includes a shaft with a notch on outside surface, a sealing element, upper and lower disruptive rams, with upper and lower cones, a movable upper support and a fixed lower support, a fastener in the form of split spring rings in an annular bore of the movable support, a nipple in an axial channel of the shaft, which is connected through the left adapter to a hollow plunger of a hydraulic setting device, a fixed support with a spring-loaded shoe valve in the form of a housing with radial holes and a sealing cup installed on the seat. The nipple is equipped with a pusher, with an annular bore at a connection point, in the axial channel of which there installed is a piston with a bar and a sleeve, which is equipped with radial holes and rigidly attached to the pusher. The shoe valve is equipped with a seat, at the connection point of the housing of the shoe valve with the nut equipped with a shell resting on the spring, in the axial channel of which there is a seat on the internal annular projection and a spring-loaded ball valve is installed. A sleeve is equipped with longitudinal slots on the end and passed through the axial channel of the seata to the axial channel of the shoe valve with possibility of the end interaction with the spring-loaded ball valve. The bar is passed through an axial channel of the sleeve so that it goes beyond its end and forms together with it an annular gap hydraulically attaching the cavity of the packer to the axial channel of the pusher.

EFFECT: avoiding conditions of occurrence of a hydraulic impact.

4 dwg

 

The invention relates to the mining industry and is designed to overlap the annulus of oil and gas wells when carrying out insulation work.

Known drillable packer (see RF patent №2011792, M CL E21B 33/12, publ. 30.04.1994, Bi No. 8).

The packer consists of a hollow shaft with sealing elements on the outer surface of the retainer, plugged at the bottom, inlet pipe with the radial holes of the cylinder with the piston sleeve. The barrel is connected by means of left-hand threads to the inlet side. The latch made in the form of spring-loaded pawls mounted in radial bores of the barrel under the inlet cone, and cylinder liners, with an internal conical surface, installed with the possibility of interaction with Cams.

Packer on the string of pipe lowered into the borehole to a predetermined depth when creating excessive pressure to move the cylinder down relative to the nozzle and barrel with compression of the sealing element and overlapping the annulus of the well. Spring-loaded Cams after passing through sleeves diverge in the radial direction and is fixed with a sealing element in a compressed stress state. Disadvantages:

- slips made of easily drillable material having a lower strength than the material of the casing. This reduces the reliable is here fixing the packer within the casing;

- slips bhumiratana in the sealing element, its deformation can lead to stiffness of the rubber in the gaps, because there is no support from the camshaft cone or extrusion washers;

- is the non-uniformity of contact around the perimeter of the interaction with the inner surface of the pipe casing;

- disconnect hydraulic landing device from the packer is accomplished by rotation of the tubing string of pipe, which limits the scope in inclined and deviated wells, because it is difficult to control torque.

Carrying out insulation work involves the supply of a definite volume of the insulating composition in podarennuyu zone. In some cases, not all of the insulating composition falls into the reservoir and must be removed from the tubing string of pipe and the annulus bore direct or backwashing that when using this arrangement, the packer could not be implemented because the column pipe is rigidly connected with the packer.

Known to be drilled mechanical packer (see RF patent №2236556, M CL E21B 33/12, publ. 20.09.2004), which is designed to overlap the annulus of oil and gas wells and implementation of technology isolation of bottom water. In the axial bore of the packer is installed check valve mangeto the type which provides free passage of the insulating composition in podarennuyu zone, with the termination of this hydraulic communication with the axial bore of the packer after the termination of the supply under pressure of the insulating composition.

Known drillable packer (see A.S. No. 1832148, M CL E21B 33/12, publ. 07.08.1993, Bi No. 29), adopted by the authors for the prototype.

The device consists of a hollow cylindrical body with the screw thread on the outer surface of the sealing element, extrusion washers, top clipshow in the form of circular sectors with radial grooves and hooks. Above the upper slipcase posted by the upper plunger. At the lower end of the hollow cylindrical body is placed lower slips in the form of annular sectors shear elements with lower support, based on the lower plunger rigidly connected with the socket and shank, which is placed between the shear ring. The upper and lower pushers have retainers in the form of a resilient split rings with a cross section of a triangular profile, interacting with the same cuts on the outer surface of the body during the landing of the packer.

Packer using shear rings attached to the landing tool and inserted into the borehole. When creating excess pressure in the boarding tool, it acts on the plunger, and through the shear ring and the pipe on either the deposits of the plunger. This leads to the landing of the packer with the deformation of the collars and mesh clipshow with the casing and the destruction of the shear ring. This facilitates removing the landing tool from the packer and its extraction from the well. For injection into the reservoir fluids into the well on tubing down the device with the plunger to enter into an axial bore of the packer. If necessary, release the axial channel of the casing from the well packer of his razvarivat. The design drawbacks:

- the need for additional technological operations lifting pipes together with landing gear and run in hole tooling for carrying out insulation works;

- the design of the packer does not imply its equipment back valve, which is necessary for carrying out insulation work, creating excessive pressure in podvecerni area. Usually part of the insulating composition may flow into the axial bore of the packer and the axial channel tubing string of pipe with the emergency situation.

The technical result that can be obtained with the implementation of the proposed invention, is as follows:

- ability to run drillable packer linkage with hydraulic landing gear, with free filling of the tubing string TRU the reservoir fluid;

- possibility hydraulic landing drillable packer when the overlapping of the hydraulic connection of the hollow bore with an axial channel tubing string of pipe;

- ability to detach hydraulic landing devices from drillable packer by breaking out of the packer or by transferring torque to the hollow plunger, which excludes the occurrence of water hammer when planting;

- the possibility of filing an insulating composition in podarennuyu zone while maintaining the kinematic connection of the pusher with the packer;

- the possibility of formation of axial hydraulic connection channel tubing string of pipe with the annular space of the borehole above the packer and removing the excess volume of the insulating composition at the wellhead;

- cessation of hydraulic connection pedacinho space with nadakarni after dumping the pressure in the axial channel of the tubing string of pipe;

Analysis of inventive step were as follows:

- known packer (see A.S. No. 1112114, M CL E21B 33/12, publ. 07.09.1984 Bi No. 33) in which in the axial bore of the packer is set, the tube is extracted on the surface of the device, after the landing of the packer;

- known packer (see RF patent №2162137, M CL E21B 33/12, publ. Bi No. 2, 2002) in which applied the separating element in the form of a shear ring, through which the packer is connected with boarding is the instrument.

Boarding tool is then removed from the well. For carrying out insulation work in tubing in a well put special nipple with his entering into an axial bore of the packer and sealing of the annular gap seal rings.

The technical result is achieved by the fact that drillable packer contains a barrel with a notch on the outer surface, upper and lower cutoff die with the upper and lower cones, the sealing element retainer with split spring rings in the bore of the housing movable supports, hydraulic landing gear, coupled with a packer left sub, nipple. Fixed support provided with a spring-loaded non-return valve in the form of a housing with radial holes and the sealing lip installed on the saddle. The nipple is provided with a plunger with an annular bore in the place of their connection and the piston rod in its axial channel, and a sleeve over the piston rigidly connected with the pusher. Shoe the valve is provided with a saddle at the junction of the body with the nut supplied with the glass resting on the spring in the axial channel which holds the saddle on the inner annular protrusion and has a spring-loaded ball valve. The sleeve at the lower end with longitudinal slots and skipped into the axial channel of the saddle with the possibility of the end of the interaction with the spring loaded ball valve, the rod is passed through the axial channel of the sleeve below the location of its end face and forms with it the annular gap, hydraulically connecting the cavity of the Cup with the axial channel of the pusher.

When conducting patent research patent and scientific literature, we have not identified technical solutions that ensure the availability of hydraulic connection cavity bore with an axial channel tubing string of pipe during lowering of the packer to the installation site; the possibility of hydraulic landing packer and separation from him, hydraulic landing device with the termination of hydrodynamic connection podvecerni cavity with an axial channel tubing string of pipes.

Not found technical solutions to ensure delivery of an insulating composition in podarennuyu, sealing nadakarni zone from entering her an insulating composition of the axial bore of the packer, the presence of nipples landing device installed with the possibility of leaching tubing string of pipe and the annulus from the remnants of the insulating composition, upon termination of hydrodynamic connection pedacinho space from nadakarni.

Design of drillable packer for carrying out insulation work in the productive interval of the formation is illustrated by drawings, which show:

- figure 1 - design of drillable packer, in connection with hydraulic landing gear, at the moment of descent into the well.

- figure 2 - design of drillable packer at the time of planting and separation of hydraulic planting equipment;

- figure 3 - relative position of the parts of the packer when conducting a presentation insulating composition in the interval of the formation;

- figure 4 is a mutual position of the parts of the packer after the repair and insulation works and the cessation of hydraulic connection podvecerni zone from nadakarni.

Drillable packer consists of a barrel 1 with 2 notches on its outer side and a circular bore 3 in place communication with the left sub 4, which is connected with the hollow plunger 5, hydraulic landing device of known construction (see Abubakirov V.F., Burkov YG, Gnoevykh A.L., etc. / Drilling equipment: Guide 2 so That 2: "Drilling Tool". M: JSC "Publishing house of the Bowels". 2003. 455).

On the shaft 1 of the bottom packer is set lower bearing 6, which has been consistently found frangible plate 7 with a bore coradini rings 8. Inside explosive dice 7 introduced Rethimno cone 9, which is installed on top of the kit sealing collars 10 and the upper Rethimno cone 11, which belongs to the interaction with the upper set of discontinuous plasek, boarding coradini rings 13. At the end of the discontinuous dice 12 rests the upper movable support 14 with a split spring rings 15. On the outer side on the upper movable support 14 is made technological groove 16, into which entered the lower end of the supporting sleeve 17 hydraulic landing device.

In the axial channel of the left sub 4 skipped the nipple 18, the associated lower end of plunger 19, provided at the point of connection of the ring bore 20 and forming a movable connection with the barrel 1. In the axial channel of the pusher 19 has a piston 21 with the rod 22. In the axial channel of the lower support 6 with the seat 23 has a casing Shoe valve 24 with the sealing lip 25, secured by a nut 26, provided with a Cup 27, which rests on the spring 28. At the junction of the nut 26 with the casing Shoe valve 24 is fixed to the saddle 30 Z-shaped form extending in the axial channel, and at the end of which rests the lower end of the plunger 19. In the axial channel 31 of the pusher 19 is fixed to the sleeve 32 with longitudinal grooves 33 at the lower end passed through the axial channel of the saddle 30, below the Seating surface.

In the axial channel of the cartridge 32 freely omitted rod 22 supported on ball valve 34 (see figure 2), which rests on the spring 35 and sits on the saddle 36, made on the inner protrusion 37 in the barely cups 27. In the body casing Shoe valve 24 is made of radial holes 38, covered in the initial position the body of the plunger 19, which also made the radial holes 39, connection axial channel 31, the pusher 19 below the piston 21, with the axial channel 40 of the barrel 1 of the packer. The lower bearing 6 provided with a sleeve 41, the cavity of which is constantly hydraulically connected holes 42 in the body of the Cup 27 with its axial channel.

In the transport position when going downhill drillable packer into the well, the ball valve 34 by the force of the spring 35 and, due to differential pressure is drawn in to the end of the sleeve 32.

Between the inner surface of the liner 32 and the outer surface of the rod 22 is formed an annular gap 43 (see figure 3), hydraulically connecting the cavity of the Cup 27 with an axial channel 31 of the pusher 19. The cavity of the Cup 27 is connected by holes 42 with an axial channel 44 of the sleeve 41 which communicates through openings 45 in the body of the lower support with a cavity hole.

The reservoir fluid at descent freely in the axial channel 31 of the plunger 19 with the lifting and positioning of the piston 21 in the annular groove 20. Thus, the reservoir fluid is freely fills the cavity of the pipe during lowering of the packer.

Work on the landing of the packer and the repair and insulation works.

In the axial channel of the drill string pipe serves under the pressure of the working liquid is th received in the axial channel of the hollow plunger 5 hydraulic landing devices and forth in the axial channel of the nipple 18.

The nipple 18 is moved down in the axial channel of the hollow plunger 5 to the impact on the end face of the saddle 30 and moving down landing valve 24 to rest on the bottom support 6. Simultaneously, the piston 21 is moved in the axial channel 31 with the influence of the rod 22 on the ball valve 34 and its landing on the landing surface 36 in the Cup 27. The force from the hydraulic landing device through the plunger 17 is reported to the upper movable support 14 with its movement barrel 1 packer, enter the landing cone 9 under frangible plates 7 and moving it in the radial direction to contact with the inner surface of the pipe casing landing acorada rings 8. Further moving down carry axial compression of the sealing cuff 10 overlapping the annular gap. After that there is a decoupling between discontinuous dice 12 in their interaction with the opposite landing cone 11 and their movement in the radial direction prior to entering into contact with the casing landing acorada rings 13. When you move the upper movable support 14 of a split spring ring 15 bevels slip relative to the notches 2 of the barrel 1 and the landing of the packer are in collaboration is with their nearest of the notches 2, locking the packer within the casing. After the landing of the packer through the left sub 4 ultimate axial force reported on the barrel 1 and is its destruction in the annular bore 3. The left sub 4 is released from engagement with the barrel 1, which allows the movement of the nipple 18 when interacting with a nut on its upper end. When moving the nipple 18 upwards the piston 21 with the rod 22 under the action of differential pressure and its own weight is moved down in the axial channel 31 to the inlet in the axial channel of the sleeve 32. The piston 21 is located below the cross-section of radial holes 39. This ensures that the hydraulic connection of the axial channel 31 of the plunger 19 with an axial channel 40 of the barrel 1. Under the action of differential pressure sleeve 32 moves downward relative to the lower support 6 with the compression springs 28 and with the location of the radial holes 38 below the level of the seat 23. Seal 25 is located below the holes 45 in the lower leg 6. This ensures that the hydraulic connection of the axial channel of the pump-compressor pipes with podplacenym space that allows the flow of the insulating part in the productive interval of the formation to isolate the reservoir water. In the case where the injectivity of the reservoir was less than expected and part of the insulating part is happened in the axial channel of the pump-compressor pipes, move the string of pipe up with the conclusion of the nipple 18 of the axial channel 40 of the barrel 1 of the packer with the location of the radial holes 39 in the body of the pusher 19 above the installation location of the packer. Supply of drilling fluid into the axial channel of the tubing string of pipe remaining volume of the chemical composition in the annular space shall be made on the surface. After lifting the nipple 18 of the axial channel 40 of the barrel 1 by the force of the compressed spring 35 ball valve 34 sits on the seat 30 with the cessation of hydraulic connection podvecerni zone with an axial channel 40 of the barrel 1. The force of the compressed spring 28 nut 26 also moves up relative to the guide support 6 with landing sealing lip 25 on the seat 23 and the cessation of hydraulic connection podvecerni zone with nadakarni.

Landing gear with the nipple 18 and the associated pusher 19 is retrieved to the surface.

Such constructive execution of the landing device and its interaction with the packer allow landing of drillable packer without the use of shear saddles, and excludes conditions for the occurrence of water hammer.

Drillable packer containing barrel with grooves on the outer surface, the sealing element, the upper and lower cutoff die, with the upper and lower cones, moving the upper and fixed lower support, a retainer videresend spring rings in the annular bore of the movable support, the nipple in the axial bore is connected through the left sub with a hollow plunger hydraulic landing device, a stationary support with a spring-loaded Shoe valve in the form of housing with radial holes and the sealing lip mounted on the saddle, characterized in that the nipple is provided with a pusher with a circular bore at the junction, in the axial channel which has the piston rod and the sleeve is provided with radial holes rigidly connected with the pusher Shoe of the valve is provided with a saddle at the junction of the casing Shoe valve with nut supplied with the glass resting on the spring in the axial channel which holds the saddle on the inner the annular protrusion and has a spring-loaded ball valve, and a sleeve provided with longitudinal grooves on the end and skipped through the axial channel of the saddle, in the axial channel of the Shoe valve with the possibility of mechanical interaction with the spring loaded ball valve, and a rod passed through the axial channel of the sleeve with its end face and forms with it the annular gap, hydraulically connecting the cavity of the packer with the axial channel of the pusher.



 

Same patents:

Packer // 2459928

FIELD: oil and gas production.

SUBSTANCE: packer includes hollow shaft, sealing elements with stops mounted on the shaft, anchor unit that consists of casing with cone with slots and plates installed in them, connected to hydraulic cylinder piston via rods, the cavity of the cylinder is connected to the cavity of the shaft through radial channel and extension-type connection pipe mounted at the lower end of hollow plunger. Note that the piston is spring-loaded downwards in relation to the cylinder - to transport position and the rods are assembled consisting of upper, pin-connected to the plates, and lower, spherically-connected to the piston, parts that are interconnected via threaded connection adjusting the rod length. Sealing elements on outer surface contacting the stops can be equipped with facets, the quantity of sealing elements can exceed two and additional intermediate stops can be arranged between them, under the sealing elements there can be installed a driving washer rigidly connected to the corresponding intermediate support.

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Parker-anchor // 2379471

FIELD: oil-and-gas industry.

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EFFECT: design simplification, operational reliability increase, manufacturing and maintenance works cast cutting due to simple and processible spare part use, their quantity decrease.

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Parker // 2379470

FIELD: oil-and-gas industry.

SUBSTANCE: parker contains a channel with sealing element, executed as a set of sleeves, and a hydraulic anchor, including a ram holder, rams and a cone, and an electrical cable, at that the hydraulic anchor has a case-piston, connected to the channel and creating a piston void together with creping its over the ram holder, connected through the channel wall hole with the channel external void, hydraulic anchor case-piston and the parker case connected with nipples over the sealing elements, inside the case-piston channel located a sickle shaped tube adjusting to its external surface, connected to the nipples inclined holes, the electrical cable goes throughout the sickle shaped tube, which cores enters the nipples inclined holes and connected to located on the nipples inclined holes ends cable connectors, with its help cable cores going through the sickle shaped tube connected to extension cables, at that the nipple connected to the channel, connected with tubing string, with the aid of which the parker installed inside the borehole with ability to of tubing string supply through nipples, the parkers channel and the hydraulic anchor case-piston medium produced form the well, at that nipples ends inclined holes and the sickle shaped tube ends mutual dislocation in one plane created because of the nipple position fixing relatively to the parkers channel and the hydraulic anchor case-piston, correspondingly with a help of a retainer nut, screwed on the parkers channel, which rotation relatively to the parkers channel limited with a stop screw, and nipples connected to the channel with captive nuts, screwed on the nipple screw till it external end meets retainer nuts.

EFFECT: parker operation reliability increase.

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FIELD: oil and gas industry.

SUBSTANCE: invention is related to oil and gas production industry and is intended for overlapping of intertubular space and performance of isolating works in case of wells overhaul. Drillable packer contains shaft with notches on external surface, the following components installed on shaft - combined sealing element, extrusion washers, upper and lower rupture screw-thread dies, movable upper and fixed lower supports, fixator in the form of split spring rings in annular bore of movable support. Packer shaft is equipped by left sub with calibrated annular bore and nipple in axial channel, which is rigidly connected to left sub and equipped with fitting valve in axial channel in the form of sleeve with dead bottom and radial holes covered with bushing equipped with throttle. Bushing is connected to sleeve by calibrated shear element. Bottom support is equipped with spring-loaded check valve in the form of body with plug in middle part and radial holes, elastic sealing collar at the lower end, installed with the possibility of interaction with seat in axial channel of lower support.

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Anchor packer // 2301321

FIELD: underground well repair, particularly equipment for sealing or packing boreholes or wells, namely devices for annulus separation during bottomhole zone waterproofing, hydraulic reservoir fracturing and other operations to be executed in well.

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EFFECT: increased efficiency.

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Anchor packer // 2301321

FIELD: underground well repair, particularly equipment for sealing or packing boreholes or wells, namely devices for annulus separation during bottomhole zone waterproofing, hydraulic reservoir fracturing and other operations to be executed in well.

SUBSTANCE: device comprises body, anchoring unit including cone and slips, sealing member, upper and lower movable and lower fixed stops and drive. Anchoring unit is arranged on the body under sealing member. Drive is made as piston installed inside the body and provided with levers and pressing members made as racks. The racks may move in axial and radial directions. Toothed rings mating the racks are formed on outer surface of the body. Inner body surface is provided with extension to limit piston stroke. Upper body part has shear bush for drop ball receiving. Anchoring unit is located over fixed support. Slides have inclined teeth. Upper parts of the teeth are directed opposite to lower parts thereof.

EFFECT: increased efficiency.

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Drillable packer // 2344270

FIELD: oil and gas industry.

SUBSTANCE: invention is related to oil and gas production industry and is intended for overlapping of intertubular space and performance of isolating works in case of wells overhaul. Drillable packer contains shaft with notches on external surface, the following components installed on shaft - combined sealing element, extrusion washers, upper and lower rupture screw-thread dies, movable upper and fixed lower supports, fixator in the form of split spring rings in annular bore of movable support. Packer shaft is equipped by left sub with calibrated annular bore and nipple in axial channel, which is rigidly connected to left sub and equipped with fitting valve in axial channel in the form of sleeve with dead bottom and radial holes covered with bushing equipped with throttle. Bushing is connected to sleeve by calibrated shear element. Bottom support is equipped with spring-loaded check valve in the form of body with plug in middle part and radial holes, elastic sealing collar at the lower end, installed with the possibility of interaction with seat in axial channel of lower support.

EFFECT: increase of intertubular space sealing reliability, and also increase of fitting tool functional resources by its multiple usage.

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Parker // 2379470

FIELD: oil-and-gas industry.

SUBSTANCE: parker contains a channel with sealing element, executed as a set of sleeves, and a hydraulic anchor, including a ram holder, rams and a cone, and an electrical cable, at that the hydraulic anchor has a case-piston, connected to the channel and creating a piston void together with creping its over the ram holder, connected through the channel wall hole with the channel external void, hydraulic anchor case-piston and the parker case connected with nipples over the sealing elements, inside the case-piston channel located a sickle shaped tube adjusting to its external surface, connected to the nipples inclined holes, the electrical cable goes throughout the sickle shaped tube, which cores enters the nipples inclined holes and connected to located on the nipples inclined holes ends cable connectors, with its help cable cores going through the sickle shaped tube connected to extension cables, at that the nipple connected to the channel, connected with tubing string, with the aid of which the parker installed inside the borehole with ability to of tubing string supply through nipples, the parkers channel and the hydraulic anchor case-piston medium produced form the well, at that nipples ends inclined holes and the sickle shaped tube ends mutual dislocation in one plane created because of the nipple position fixing relatively to the parkers channel and the hydraulic anchor case-piston, correspondingly with a help of a retainer nut, screwed on the parkers channel, which rotation relatively to the parkers channel limited with a stop screw, and nipples connected to the channel with captive nuts, screwed on the nipple screw till it external end meets retainer nuts.

EFFECT: parker operation reliability increase.

4 cl, 1 dwg

Parker-anchor // 2379471

FIELD: oil-and-gas industry.

SUBSTANCE: well parker-anchor, containing a case, an anchor unit, consisting of a void cone and a ram, installed under a sealing element, located between a top fixed stop block and a bottom stop block, and a drive, made as a piston with pass through channel, equipped with pass though narrowing on the bottom, and from the top - with a void bar, which stiffly and axially connected with the cone from the top, stiffly fixed with the case. The piston installed inside of the movable cylinder, and the inside void between the cylinder and the piston connected with the bar void over the pistons pass through channel narrowing, at that the top stop block executed spring loader from the top and with ability of limited upwards movements, and the bottom stop block equipped with radial windows and is movable, has upwards movement ability, interaction with the cylinder at the bottom. Rams made roller shaped with longitude holes, installed in the bottom stop block windows on axis, which fixed perpendicularly to the case axis, at that the rollers longitude hole diametre is bigger then axis external diametre, and the rollers external surface serially interacts with the void bar external surfaces, the cone, the case and the wells wall during the bottom stop block movement relatively to the case. In the offered parker-roller design, which roles between the well wall and the case, achieves a reliable borehole separation in result to the tubing string weight, because of that parkering and unparkering executed with tubing string movement, which location controlled on the borehole head.

EFFECT: design simplification, operational reliability increase, manufacturing and maintenance works cast cutting due to simple and processible spare part use, their quantity decrease.

7 dwg

FIELD: oil and gas production.

SUBSTANCE: packer-anchor consists of housing, anchor unit made of cone and slips in a form of rollers, sealing element between the upper and lower movable supports, drive. The upper support is spring-loaded downwards by coil spring that leans on the lower bushing of protective means against foreign substances that includes upper and lower movable bushings loaded by the said spring and collar fixed between these bushings capable of radial extension. The effort necessary for maximum radial extension of the collar is less than the effort necessary for rollers movement on the cone. The possibility of upper support axial movement is limited by end surface of housing step. Method of well annular space separation consists in descending of described packer-anchor into the well, preparation of packer-anchor to installation by pressure of pumped fluid, setting of rollers into working position, preparation of sealing element for separation of well space, separation of well space with the possibility of further de-packering-de-anchoring, removing from well or movement to well other zone.

EFFECT: increase of device and method of space separation reliability, facilitation of operational service.

2 cl, 7 dwg

Packer // 2459928

FIELD: oil and gas production.

SUBSTANCE: packer includes hollow shaft, sealing elements with stops mounted on the shaft, anchor unit that consists of casing with cone with slots and plates installed in them, connected to hydraulic cylinder piston via rods, the cavity of the cylinder is connected to the cavity of the shaft through radial channel and extension-type connection pipe mounted at the lower end of hollow plunger. Note that the piston is spring-loaded downwards in relation to the cylinder - to transport position and the rods are assembled consisting of upper, pin-connected to the plates, and lower, spherically-connected to the piston, parts that are interconnected via threaded connection adjusting the rod length. Sealing elements on outer surface contacting the stops can be equipped with facets, the quantity of sealing elements can exceed two and additional intermediate stops can be arranged between them, under the sealing elements there can be installed a driving washer rigidly connected to the corresponding intermediate support.

EFFECT: extension of packer functional capabilities for operation in slope-directed and horizontal areas of the wells, increase of packer reliability, simplification of packer assembly.

5 cl, 2 dwg

Drillable packer // 2483192

FIELD: oil and gas industry.

SUBSTANCE: drillable packer includes a shaft with a notch on outside surface, a sealing element, upper and lower disruptive rams, with upper and lower cones, a movable upper support and a fixed lower support, a fastener in the form of split spring rings in an annular bore of the movable support, a nipple in an axial channel of the shaft, which is connected through the left adapter to a hollow plunger of a hydraulic setting device, a fixed support with a spring-loaded shoe valve in the form of a housing with radial holes and a sealing cup installed on the seat. The nipple is equipped with a pusher, with an annular bore at a connection point, in the axial channel of which there installed is a piston with a bar and a sleeve, which is equipped with radial holes and rigidly attached to the pusher. The shoe valve is equipped with a seat, at the connection point of the housing of the shoe valve with the nut equipped with a shell resting on the spring, in the axial channel of which there is a seat on the internal annular projection and a spring-loaded ball valve is installed. A sleeve is equipped with longitudinal slots on the end and passed through the axial channel of the seata to the axial channel of the shoe valve with possibility of the end interaction with the spring-loaded ball valve. The bar is passed through an axial channel of the sleeve so that it goes beyond its end and forms together with it an annular gap hydraulically attaching the cavity of the packer to the axial channel of the pusher.

EFFECT: avoiding conditions of occurrence of a hydraulic impact.

4 dwg

Anchor for tubing // 2634316

FIELD: construction.

SUBSTANCE: invention relates to devices for fixing a tubing string in a casing string and eliminating the undulatory bending of the tubing string during the production of a reservoir fluid by downhole rod pumping units. The anchor consists of a housing, a cone, dies mounted on the cone by means of a dovetail, a casing, shear pins. On the cone along the dovetail, grooves are made, in which rollers installed in a cage are movable arranged, the dies resting on the rollers with their base. The cone is fixed against movement relative to the housing by means of a collet or a spring split ring. The collet or the spring split ring with its lower end rests against a ring mounted on the shoulder of the lower housing, and with its conical projection - into the stop ring mounted on the inner shoulder of the cone.

EFFECT: simplified design and increased operation reliability.

3 cl, 1 dwg

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