Released bidirectional packer on cable

FIELD: mining.

SUBSTANCE: released bidirectional packer on cable includes setting tool on cable, stationary bushing with main seat and movable central rod, which is equipped with main stay nut and valve interacting with main seat, movable bushing, two opposing cones, screw-threaded dies connected between them in axial direction and designed to interact with corresponding cones, packer collar and boss made to interact with extraction unit. The stationary bushing is equipped in its middle part with a lengthwise groove, while its ends are equipped with main and additional seats and with upper and lower stops with bypass channels. Also the packer collar is made in form of an upper self-packing collar, is able to travel bottom-up and is located between the upper cone and the upper stop. A lower self-packing collar is situated between the lower cone and lower stop; this collar is able to travel downright; the movable bushing is set on the stationary bushing, it is equipped with a pin inserted into the lengthwise groove of the stationary bushing. Further screw-threaded dies are arranged on the movable bushing, are pressed inwards with spring rings and each of them is equipped with centralisers pressed outward. The central rod is equipped with upper and lower circular grove with the additional stay nut and the valve. The main and additional valves are assembled in corresponding upper and lower grooves and are able to limited displacement between the corresponding stops and interior edges of the corresponding circular grooves; also the valves are pressed from the stops to corresponding main and additional seats. The main and additional stay nuts are arranged at a uniform distance from the pin of the movable bushing and are able to interact with the pin; the boss is rigidly connected to the top of the central rod and is made in form of a cone tapered at the top, on the interior surface of which there is made a closed shaped slot with a groove connecting it with the upper edge of the boss. The setting tool is made in form of a branch with a pin inserted into the shaped slot, which is made so, that at reciprocal movement of the setting tool relative to the boss for the length exceeding the height of the shaped slot, the pin will be located within the limits of the shaped slot; if the length is less, then the pin will go into the groove of the shaped slot at travel upward.

EFFECT: simplification of packer design eliminating implementation of electric engine with cable and facilitating setting and disruption of packer in specified interval of well without special devices.

2 dwg

 

The invention relates to the oil and gas industry and can be used to divide areas of casing in repair, insulation and research.

Known as the "Universal packer for hydrostatic testing and research pillars" (patent RU 2268988, EV 33/12, 47/00, publ. Bull. No. 3 dated 27.01.2006), consisting of associated with cable rope housing that houses the motor, gearbox, screw pair, a Central rod connected to the screw and the plunger, rubber seal located between the fixed and movable flanges, saddles, located on the inner surface of the housing with a possibility of formation together with o-rings valve, movably connected with the inner surface of the housing of the movable sleeve, which is a cone with a movably attached it dies, while the packer is equipped located in the upper part of the packer fluid flow meter and gamma logging sensor locator, located at the end of the Central rod as a packer pressure sensor located on the line of injection fluid into the well a fluid flow meter and pressure sensor and placed on the wellhead unit receive and record technical parameters, through which the cable rope is electrically connected to the pressure sensor, liquid flow meters and ha is mA-logging sensor with the locator.

The disadvantages of this universal packer are:

- first, the high cost of equipment, due to the presence in the design of the motor and cable;

- secondly, the presence of the electric motor requires special equipment for installation;

- thirdly, the complexity of the design of the packer due to the presence of mechanical and electrical components, and the failure of one of these components leads to an emergency situation in the well.

The closest in technical essence and the achieved result is "Packer Attaleia double-acting with an Electromechanical actuator (patent RU 2250351, EV 33/12, publ. Bull. No. 11 dated 20.04.2005), characterized in that it includes a housing which houses an electric motor with an output shaft connected to a screw pair, which is connected with a thrust, with the lower part of the gripping pins with spring for transmitting axial forces on the Central rod, with the upper part of the ledge, groove and notches, and the lower sealing ring, anchor nut, the packer includes a sleeve having on the inner surface of the conical surface of the boss with the tabs located in the slots of the lugs and the gripping segments of the shear ring, United still with the boss, still bushing, rubber packer, saddle rigidly United with b is Biscoe, the movable flange and two cone, opposite each other, a die movably mounted on a cone, rod, pivotally connected to the dies, pipe, still planted on the cone, the sliding sleeve, balls, preloaded by a spring and a screw for connecting the boss to the sleeve, cable rope, which is the load-bearing rope and feeding through a vein of a current motor, shear washer, Podiatry nut, and used when retrieving the packer site engagement, which includes pusher, svorachivayushiysya on the lower part of the screw pair, split collet and the casing, and on the boss and the movable flange is made through the holes for the message above and podvecerni cavities well.

The disadvantages of this universal packer are:

- first, the high cost of equipment, due to the presence in the design of the motor and cable;

- secondly, the presence of the electric motor requires special equipment for installation;

- thirdly, the complexity of the design of the packer due to the large number of components and parts;

- fourthly, the design complexity and high cost of special devices planting and removal of the packer.

The objective of the invention is to simplify the design of the packer without using a motor cable with landing and the collapse of the packer in specified is the interval of the well without special devices.

The technical problem is solved using the proposed packer tableusers double-acting on the rope, including boarding tool on the rope, a fixed sleeve with the main seat and a movable Central shaft, which is equipped with the main nut and the valve communicating with the main seat, a movable sleeve, two cone, opposite each other, the dies are connected to one another in the axial direction and configured to interact with corresponding cones, packer sleeve, the boss made interoperable with the node retrieval.

What's new is that the stationary sleeve fitted in the middle part of the longitudinal groove, and the ends of the main and additional seats and top and bottom stops with by-pass channels, thus sealing cuff is made in the form of a self-sealing top cuff, which passes upward and located between the upper cone and the upper stop; between the lower cone and lower stop is the lower self-sealing cuff, allowing moving downward, the movable sleeve is placed on the fixed sleeve, equipped with a pin inserted in the longitudinal groove of the fixed sleeve and the die mounted on a movable sleeve, are drawn inside the spring rings and naseni each centralizers, sprung outward, while the Central rod is equipped with upper and lower annular grooves, an additional nut and valve, and the primary and secondary valves are located in the respective upper and lower grooves with limited movement between the respective lugs and the inner edges of the respective annular grooves and are drawn from the stops to the appropriate basic and advanced saddles, and primary and secondary thrust nut placed at equal distances from the pin movable sleeve with the opportunity to interact with him, and the boss rigidly connected with the top of the Central stem, made in the form of a pointed top of the cylinder, on the outer surface of which is made a closed figure groove with groove, connecting it with the top edge of the boss, and the landing tool is made in the form of a nozzle with a pin mounted in the shaped groove, which is made so that when the reciprocating movement of the landing of the tool relative to the lugs on the length that exceeds the height of the curved groove, the pin will be located within the curved groove, and if it's smaller then the pin when moving up gets into the groove shaped groove, and the distance from the pin to any of the hard nuts is limited to moving the primary and to anitelea valves between the respective lugs and the inner edges of the respective annular grooves, and mutual arrangement of the valves, hard nuts and dice defined by the following formula:

a+b≥L,

where L is the distance from the dies to the appropriate cone, sufficient for fixing the dice on the inner walls of the well in which the lower packer, mm;

and the distance from the pin to any of the hard nuts, mm;

b - the distance from the valve to the inner edge of the annular groove, mm

The figure 1 presents the proposed packer Attaleia double-acting on the rope in the longitudinal section.

The figure 2 shows the scanning shaped groove made on the outer surface of the boss packer tableusers double-acting on the rope.

Packer Attaleia double-acting on the rope (see figure 1) includes the planting tool 1 on the rope (figure 1 and 2 is not shown), a fixed sleeve 2 with the main seat 3 and a movable Central rod 4, which is equipped with the main nut 5 and the valve 6, which interacts with the main saddle 3.

The packer also includes a movable sleeve 7, two cone: the top 8 and bottom 9, opposite each other, dies: top 10 and bottom 11, connected to each other in the axial direction and configured to interact with corresponding upper 8 and lower 9 cones and packer cuff 12, the boss 13, made possible with the TEW interaction with the node extraction (not shown).

The stationary sleeve 2 is provided in the middle part of the longitudinal groove 15, and the ends of the main 3 and an additional 14 seats and the upper 16 and lower 17 stops the overflow channels 18 and 19 respectively.

Packer sleeve 12 made in the form of the top self-sealing cuff, which passes upward and located between the upper cone 8 and the upper stop 16. Between the lower cone 9 and lower stop 17 is the lower self-sealing cuff 20, passing from top to bottom.

The movable sleeve 7 is placed on the stationary sleeve 2 with pin 21 inserted in the longitudinal groove 15 of the fixed sleeve 2.

The dies 10 and 11 are installed on a movable sleeve 7, are drawn inside the spring rings 22 and include each of the units 23 and 24, respectively, spring-loaded by means of springs 25 to the outside.

The Central shaft 4 is equipped with the top 26 and bottom 27 of the annular grooves, an additional nut 28 and an additional valve 29, and the main 6 and additional valves 29 are located in the respective upper 26 and lower 27 drillings with the possibility sealed limited movement between the respective top 16 or bottom 17 of the lugs and the inner 30 and 31 of the respective upper edges 26 or the bottom 27 of annular grooves, and are drawn from the core 16 and an additional 17 stops through the DG springs 32 and 33 respectively to the core 3 and an additional 14 seats, and the main 5 and an additional 28 thrust nut placed at the same distance from pin 21 of the movable sleeve 7 with the possibility of interacting with it, and the boss 13 is rigidly connected with the top of the Central rod 4 made in the form of a pointed top of the cylinder, on the outer surface of which is made a closed shaped groove 34 with the groove 35, connecting it with the upper edge 36, and planting tool 1 is made in the form of a nozzle with a pin 37 mounted in the shaped groove 34, which is designed so that when the reciprocating movement of the landing of the tool relative to the lugs 13 on the length that exceeds the height of the L1curly groove 34, the pin 37 will be located within the curved groove 34, and if it's smaller then the pin 37 when moving up gets into the groove 35 shaped groove 34, and the mutual arrangement of the main 6 and additional valves 29 and the base 5 and an additional 28 stubborn nuts relative to the pin 21 is defined by the following formulas:

where a is the distance from pin 21 to any of the hard nuts 5 or 28 mm;

b+c - a limited movement of the main 6 and an additional 29 valves between the respective lugs 16, 28 and the inner edges 30, 31 of the respective annular grooves 26, 27 mm;

b - the distance from the valve 6 or 29 respectively to inner the second edge 30 or 31 of the annular groove 26 or 27, mm;

with distance from the valve 6 or 29 to communicate with the underlying emphasis of 16 or 28 mm

where L is the distance from the dies 10 or 11 to the corresponding cone 8 or 9, sufficient for fixing plates 10 or 11 on the inner walls of the well in which the lower packer, mm.

Packer Attaleia double-acting on the rope is as follows.

At the wellhead (figure 1 and 2 is not shown) the pin 37 is placed in the upper part of the curved groove 32 of the boss 13 (see figure 2) - the transport position, then the packer Assembly, as shown in figure 1, with the landing tool 1 on the rope lowered into the borehole at a given interval setup.

In the process of lowering the packer into the well (figure 1 and 2 is not shown) pin 37 (see figure 2) descends into the lower part of the curved groove 34 by engagement with the inner walls of the borehole (figure 1 and 2 not shown) of the units 23 and 24, the spring-loaded radially outward by the springs 25, and the pin 37, acting on the lower edge of the curved groove 34, pushes the boss 13. In the axial force down through the boss 13 is transmitted to rigidly associated with the Central shaft 4, which, in turn, the edge 31 acts on the additional valve 29, pressing his spring 33 down, with additional valve 29 moves away from additional seat 14, forming to Lavoy gap, the total movement of the Central shaft relative to the packer is not more than

a=b+C,

where a is the distance from pin 21 to thrust nut 5, the Central shaft 4,

b - the distance from the additional valve 29 to the inner edge of the annular groove 31 of the Central rod 4, which does not allow the packer upper dies 10, with the upper cone 8 to wedge themselves on the inner walls of the well.

with distance from the additional valve 29 to interact with the stop 28, mm.

As a result, in the process of lowering the packer into the well fluid is bypassed from the bottom up through the bypass channel 19 of the lower stop 17, and the resulting annular gap between the additional valve 29 and an additional saddle 14, and further downhole fluid through the annular space between the Central shaft 4 and the fixed sleeve 2, the bypass channel 18 of the upper stop 17 hits in nadakarni space.

Upon reaching the desired installation interval packer produce uncoupling planting tool 1 from the packer.

To do this, from the wellhead by means of a rope to pull planting tool 1 up to a length greater length L1curly groove 34, and the pin 37 is moved to the upper part of the curved groove 34 (see figure 2), with additional valve 29 is hermetically sits on an extra saddle 14, arouses to its original position, in which it was before descending into the well (see figure 1), preventing the flow of the well fluid upward through the annulus packer between the Central shaft 4 and the fixed sleeve 2, with the pin 21 moves away from the thrust of the nut 5, the Central shaft 4, placed between the supporting nuts 5 and 28, as shown in figure 1.

Then lower the landing tool 1 using the same rope to a length less than the length L1curly groove 34, and raise, with the pin 37 moves down the left hand side shaped groove 34 (see figure 2) and does not fall in the lower part of the curved groove 34. After that make the rise of the planting tool 1 by means of a rope, with the pin 37 of the curved groove 34 enters the groove 35 and, reaching the top edge 36 is out of engagement with shaped groove 34. Thus, boarding down tool from the packer, which remains in the borehole in accordance with the prescribed interval and planting tool 1 by means of a rope pull to the surface.

If the bottom of the lower pressure self-sealing cuff 20 under the action of fluid pressure is pressed against the inner walls of the borehole, the packer components, except the movable sleeve 7, which their units 23 and 24 is in engagement with the inner walls of the borehole, and placed it detalii, 11, 21, 22, 23, 24, 25, remaining in place, move up, including a self-sealing cuff 20, the maximum total displacement L is the distance from the dice to the appropriate cone, sufficient for fixing the dice on the inner walls of the borehole, is

a+b≥L,

that is, first, the Central shaft 4 and all the details of the packer excluding items 7, 10, 11, 21, 22, 23, 24, 25, remaining in place, move up to another bottom end thrust nut 28 at the end of the pin 21, which remains stationary, passing the path a, that is, the distance from pin 21 to thrust nut 28, and then all the details of the packer, with the exception of the above items remaining in place, pass the path b, that is, the distance to the stop end of the inner annular groove 30 of the Central rod 4 in the end valve 6, thus moving all of the parts of the packer relative to the movable sleeve 7, remaining on the spot, and placed details 10, 11, 22, 23, 24, 25 stops because of the lower cone 9 with the lower die 11 and radially outward pressing the lower snap ring 22 (see figure 1), sticking them to the inside of the walls of the borehole. The result is lower self-sealing cuff 20 under the action of fluid pressure from below is firmly pressed against the inner walls of the well, cutting off nadakarni space well.

If the pressure above the pre is yset pressure from below (for example, when carrying out the above packer such as fracturing or acidizing of the formation under high pressure), as the carrying out of such works and the growth pressure from above, which is perceived is the top self-sealing cuff 12, the latter is pressed against the borehole walls, with all the details of the packer with the exception of the movable sleeve 7, which their units 23 and 24 is in engagement with the inner walls of the borehole and placed details 10, 11, 21, 22, 23, 24, 25, remaining in place, move up, including self-sealing top the cuff 12, the maximum total displacement L is the distance from the dice to the appropriate cone, sufficient for fixing the dice on the inner walls of the borehole, is

a+b≥L,

that is, first, the Central shaft 4 and all the details of the packer excluding items 7, 10, 11, 21, 22, 23, 24, 25, remaining in place, moves up to lock the bottom end of the thrust nut 5 at the end of the pin 21, which remains stationary, passing the path a, that is, the distance from pin 21 to thrust nut 5, and then all the details of the packer, with the exception of the above items remaining in place, pass the path b is the distance from the stop end of the inner annular groove 31 of the Central rod 4 into the end of the additional valve 29, and the movement of all parts of the packer is relatively movable sleeve 7, remaining in place, and placed details 10, 11, 21, 22, 23, 24, 25 stops because the upper cone 8 with the upper die 10 radially outward, pressing the lower snap ring 22 (see figure 1), sticking them to the inside of the walls of the borehole. In the self-sealing cuff 12 under the action of fluid pressure on the top firmly pressed against the inner walls of the well, cutting off podvecerni space well.

Upon completion of the work the packer from the well is removed by any standard fishing tool, for example the outer rublevkoy, which descend into the well pipe or rope (figures 1 and 2 not shown), and then produce the capture of the outer rublevkoy for the lower end of the boss of the Central shaft 4.

The proposed packer Attaleia double-acting on the rope has a simple design. In addition, for the landing and the collapse of the packer in the set interval of the well does not require the use of motor cable and special devices that can significantly reduce both material and financial costs in the process of using the proposed packer.

Packer Attaleia double-acting on the rope, including boarding tool on the rope, a fixed sleeve with the main seat and a movable Central shaft, which is equipped with the main nut and what lepanam, interacting with the main seat, a movable sleeve, two cone, opposite each other, the dies are connected to one another in the axial direction and configured to interact with corresponding cones, packer sleeve, the boss made interoperable with the node extraction, characterized in that the stationary sleeve fitted in the middle part of the longitudinal groove, and the ends of the main and additional seats and top and bottom stops with by-pass channels, thus sealing cuff is made in the form of a self-sealing top cuff, moveable upward and located between the upper cone and the upper limit, between the lower cone and lower stop is the lower self-sealing cuff, allowing moving downward, the movable sleeve is placed on the fixed sleeve, equipped with a pin inserted in the longitudinal groove of the fixed sleeve and the die mounted on a movable sleeve, are drawn inside the spring rings and each equipped with centralizers, sprung outward, while the Central rod is equipped with upper and lower annular grooves, an additional nut and valve, and the primary and secondary valves are located in the respective upper and lower grooves with Ogre is reduced displacement between the respective lugs and the inner edges of the respective annular grooves and are drawn from the stops to relevant primary and secondary saddles, but the main thrust nut placed at the same distance from pin movable sleeve with the opportunity to interact with him, and the boss rigidly connected with the top of the Central stem, made in the form of a pointed top of the cylinder, on the outer surface of which is made a closed shaped groove with a groove, connecting it with the top edge of the boss, and the landing tool is made in the form of a nozzle with a pin mounted in the shaped groove, which is made so that when the reciprocating movement of the landing of the tool relative to the lugs on the length that exceeds the height of the curved groove, the pin will be located within the curved groove, and if it's smaller then the pin when moving up gets into the groove shaped groove, and the distance from the pin to any of the hard nuts is limited movement of the primary and secondary valves between the respective lugs and the inner edges of the respective annular grooves, and mutual arrangement of the valves, hard nuts and dice defined by the following formula:
a+b≥L,
where L is the distance from the dies to the appropriate cone, sufficient for fixing the dice on the inner walls of the well in which the lower packer, mm;
and the distance from the pin to any of the hard nuts, mm;
b - the distance from the valve is to the inside edge of the annular groove, mm.



 

Same patents:

FIELD: mining.

SUBSTANCE: released bidirectional packer on cable includes setting tool on cable, stationary bushing with main seat and movable central rod equipped with main stay nut and valve interacting with main seat, movable bushing, two opposing cones, screw-threaded dies connected to each other axially and designed to interact with corresponding cones, packer collar, and boss made to interact with extracting unit. The stationary bushing is equipped in its middle part with a lengthwise groove, while at the ends it is equipped with the main and additional seats and with upper and lower stops with bypass channels. Also the packer collar is made in form of an upper self-packing collar allowing bottom-up travel and located between the upper cone and upper stop. A lower self-packing collar is situated between the lower cone and lower stop; this lower self-packing collar travels downright; the movable bushing is located on the stationary bushing and is equipped with a pin inserted into the lengthwise groove of the stationary bushing. The screw-threaded dies are assembled on the movable bushing and are pressed inside with spring rings; the dies are equipped with centralisers, spring loaded outwards. Further the central rod is equipped with upper and lower circular grooves, with additional stay nut and valve; the main and additional valves are placed in corresponding upper and lower grooves and are able to pressure tight limited travel between the corresponding stops and internal edges of corresponding circular grooves; they are pressed from the stops to corresponding main and additional seats. The main and additional stay nuts are arranged at uniform distance from the pin of the movable bushing and interact with the pin. Also the lower stop is equipped with outward spring loaded plates assembled uniformly outside along the perimeter of the lower stop and designed to limited radial movement; the boss is rigidly connected with the top of the central rod. The boss is made in form of the tapered at the top cylinder, on the exterior surface of which there is made a shaped closed slot with a groove connecting the slot with the upper edge of the boss. The setting tool is made in form of a branch with a pin inserted into the shaped slot, which is made so, that at reciprocal movement of the setting tool relative to the boss at the length exceeding the height of the shaped slot the pin will be located within the limits of the shaped slot; if the length is less, then the pin will go into the groove of the shaped slot at travel upward.

EFFECT: simplification of packer design eliminating implementation of electric engine with cable and facilitating setting and disruption of packer in specified interval of well without special devices.

2 dwg

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FIELD: oil and gas industry.

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Plug packer // 2346142

FIELD: oil and gas industry.

SUBSTANCE: invention refers to oil industry, and is intended for temporary covering of well shaft. Plug packer consists of a mandrel with internal cylindrical mining device; on external side of mandrel installed is a sealing element with a stop. Above the latter there is a thrust bush, and between it and the stop - retaining ring with notches. On the mandrel opposite the stop there provided are annular notches with the direction opposite to the ring notches. Below sealing element there located is the main cone with main sockets, locking ring, and additional cone with additional sockets. Main sockets and additional sockets are connected to the main cone and additional cone respectively by means of a dovetailed joint, and to the locking ring edges - by means of T-joint. Mandrel is equipped with stops located along the perimeter and at one and the same level between additional sockets with the possibility of passing through openings provided in locking ring, and interconnected to the main cone when in operating position. Inside the mandrel there telescopically installed is a detachable joint made in the form of a branch pipe with external cylindrical mining device in upper part. In lower part of the mandrel there are radial holes located wherein fixing balls are installed. Plug is made in the form of a blind transverse partition installed inside the mandrel, and a hollow bush rigidly attached to additional cone from the outside. Blind transverse partition and mandrel can be made as one solid part. Balls are interconnected on the one side to detachable joint, and on the other one - to hollow bush. By means of shear elements, the mandrel is connected to detachable joint and main cone. On the stop from above there is a casing of setting tool rested. Detachable joint is plugged from above, and setting tool rod is made hollow, and connected to mandrel by means of a breaking element. From below, the hollow cylinder is borne against the hollow transverse partition downwards by means of a spring, which is located inside on the lower end of the mandrel, at that spring is in a compressed position. Mandrel below hollow transverse partition is equipped with a vertical through slot wherein installed is a pin with the possibility of axial movement. On one side, pin is rigidly connected to additional cone, and on the other one - to spring-loaded hollow cylinder. Sealing element is made in the form of barrel-shaped seals separated from each other with a support ring.

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3 dwg

Drillable packer // 2344270

FIELD: oil and gas industry.

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3 cl, 4 dwg

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5 cl, 2 dwg, 1 ex

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FIELD: oil well drilling and operation, particularly for selective well hole flushing to prevent mud accumulation therein.

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2 cl, 7 dwg

FIELD: oil production, particularly pipe string pressure-testing inside well.

SUBSTANCE: packer comprises setting tool, lowering device made as cable head with cable, cylindrical body with seat and central axial and radial channels connecting outer body space with central axial channel thereof, sealing member installed on the body and bush sliding in axial direction. The bush has support anvils and is installed in the body. Pipe string section below pressure-testing interval has test clutch provided with calibrated central channel with inner diameter d less that inner diameter d1 of pipe string. The pipe string has annular depression located over test clutch and having large pipe string clutch joint dimensions in longitudinal direction. Support anvils have longitudinal dimensions B corresponding to longitudinal dimension L of annular depression formed in test clutch and are spring-loaded outwards by means of spring plates. The support anvils are inserted in radial body channels. The body has technological pipe located in top part thereof. Body seat is made as restricted section of central axial channel located below radial channels. Sealing member is outside the channel and is installed on the body. The sealing member may air-tightly cooperate with central channel of test clutch. Bush has widened part formed in center thereof, as well as lower and upper ends having decreased diameters. Lower end the bush cooperates with support anvils from inside and is hermetically inserted in the body seat. Upper end of the bush cooperates with technological pipe from inside. Bush has serially arranged radial orifices and cap arranged upstream of the technological pipe. Cap comprises fishing head. Widened bush section may be engaged with support anvils from inside as support anvils cooperate with annular depression of test bush. Longitudinal short and long turnings connected with each other through figured turning are created on outer surface of technological pipe top. Long turning extends to technological pipe edge. Setting tool is made as pusher connected with lowering device and cooperating with fishing head of the bush from upper part thereof and as pipe installed on the pusher so that the pipe may rotate and move in axial direction. Lower pipe end encloses technological pipe. The technological pipe has inner pin cooperating with technological pipe turnings. In initial position the pin is arranged in short turning.

EFFECT: possibility of low-diameter pipe pressure-testing, decreased metal consumption and costs.

3 dwg

Packer // 2245986

FIELD: oil and gas extractive industry.

SUBSTANCE: packer has body in form of pipe, whereon collar compactors are placed with limiting washers, saddles for locking tool dropped from surface, cover, upper and lower fixing elements, made in form of anchoring assemblies, upper conical bushing, rigidly connected to pressing bushing and movably to the body, lower conic bushing, made rigidly together with body, guide of this conic bushing made in form of plate spring, placed by one end moveably in guiding groove in lower portion of lower die with teeth, and by other end fixed rigidly on greater diameter of this conic bushing, auxiliary pipe, placed inside the body. Packer in lower portion is provided with check valve, placed inside recess of body, concurrently being also the body of valve. Oppositely to valve saddle on same axis stepped locking bushing is placed with possible sliding inside body recess with limited drive and possible overlapping of radial grooves made in body, which, in its turn, is rigidly connected to auxiliary pipe via shear pin. Between stepped locking bushing and saddle compression spring is placed. Fixing elements of collar compactors are made in form of comb with inner teeth and outer conic generators in nose portion. On the side of collar compactors these are enveloped by inner conic portion of compression bushing, in its turn rigidly connected to upper conic bushing, and on the other side combs with inner teeth are placed sliding-moveably in radial grooves of guiding bushing placed between ends of upper conic bushing and inner conic portion of compression bushing with possible engagement by inner teeth of comb to slanting walls of body groove and interaction to all elements of this assembly.

EFFECT: higher reliability.

5 dwg

FIELD: oil and gas extractive industry.

SUBSTANCE: system has upper and lower packers, each of which has body, shaft, anchor, compactors, and pipes, placed between packers. In shaft of upper packer a copier is made with fixing device of transporting and working position of anchor and a sub. The latter is mounted with possible axial displacement and rotation around the copier. Sub is placed on pipes between packers, mated to lower packer and has no capability for axial rotation and displacement relatively to their axis in operating position of lower packer. On lower packer shaft a copier is made with possible axial displacement with it for interaction with anchor and its displacement from transporting position to operation position.

EFFECT: simplified construction, broader functional capabilities.

3 dwg

FIELD: oil and gas industry.

SUBSTANCE: stand has imitators of casing and lifting columns with packer between them, means for heating casing column imitator, main hydraulic cylinder for axial loading and unloading of packer, pumps to create pressure. Stand is provided with additional hydraulic cylinder with hollow rod and cylinder, connected to rod of min hydraulic cylinder. Additional hydraulic cylinder is encased in the body, rigidly connected to main hydraulic cylinder and imitator of casing column. In additional hydraulic cylinder a ring-shaped piston is placed with conical skirt, interacting with keys with possible periodical supporting against the body through windows in said cylinder and below keys spring-loaded ring-shaped pusher is moveably mounted. In hollow of imitator of lifting column a floating piston is positioned, this hollow and hollow of the hollow rod are interconnected and also connected to hollow above ring-shaped piston.

EFFECT: broader functional capabilities, higher efficiency.

7 dwg

FIELD: oil and gas extractive industry.

SUBSTANCE: device includes hollow body with a row of vertical apertures, a collar, pusher bushing, placed on body with possible interaction with collar, cone, mounted on the body, cylinder, connected to cone, screw-thread dies with die holder, mounted on the body with possible extension of dies in radial direction during interaction with cone, saddle and shear screws. According to invention in die holder additional through radial apertures are made, wherein sockets are mounted with possible extension in radial direction. Inner hollow of die holder is connected to inner hollow of body by a row of radial apertures. In pusher bushing through radial apertures are made, wherein sockets are mounted with possible extension in radial direction. Pusher bushing is rigidly fixed to the body, and its inner hollow is connected to inter-tubular space below the collar.

EFFECT: higher reliability, durability and lower cost.

3 dwg

FIELD: oil industry.

SUBSTANCE: device has body with radial apertures, two compacting assemblies thereon and valve assembly between them. Each compacting assembly comprises a collar, stopping branch pipe, cylinder, forming a ring-shaped hollow with the body, wherein a bushing is placed. In upper compacting assembly ring-shaped hollow is covered by plug from lower side, which is fixed in cylinder and interacts with collar, cylinder is connected to body by cams, placed in radial apertures of plug and in ring groove of body, bushing is made stepped, long step of which interacts with cams and is fixed by shear screws from displacement in ring plane, which is connected to well. In lower compacting assembly bushing is provided with holder, on the body a cone is mounted, interacting with sockets, placed in grooves of stopping branch pipe, which is fixed on the body by shear screws.

EFFECT: higher reliability.

2 cl, 4 dwg

Two-packer device // 2249669

FIELD: oil and gas industry.

SUBSTANCE: device has shaft with radial channels and return valve, upper and lower compacting elements. Inside the shaft a hollow spring-loaded moving rod is placed. It has radial apertures and recesses. Between apertures a throttle is rigidly placed. On upper portion of rod a piston is placed. Working hollow, formed between rod with piston and barrel, fixed on inner portion of shaft, is connected to above-packer space of well by radial aperture, made in barrel wall. Working hollows of upper and lower compacting elements are connected by axial channel, made in shaft and ring channel, formed between inner and outer pipes, connecting lower compacting element to the shaft. On upper portion of pipe through radial apertures are made and cylindrical recess, matching rod diameter, in which rod a plug is place. Outer diameter of upper end portion of rod equals outer diameter of lower rod portion.

EFFECT: higher reliability.

2 dwg

FIELD: oil and gas industry.

SUBSTANCE: packer has body, in which electric engine, reducer with output shaft, connected to screw couple, which is connected to traction, having holding rods on lower portion with spring for transfer of axial force to central rod, having a shelf in upper portion as well as recess and cuts, and in inner portion - compacting rings and stopping nut, are positioned. Packer has shell, having conical surface on inner portion, special part with shelves, shear ring placed in grooves of said special part and holding segments, immobile bushing connected fixedly to special part. Packer has packer rubber, saddle, rigidly connected to special part, moveable flange and two cones, placed oppositely to each other, dies, moveably placed on cones, traction, jointly connected to dies, branch pipe, fixedly placed on body, moveable bushing, balls, pressed by spring and screw for connection of special part to shell, cable of rope, being a carrying cable and feeding electric engine via filament, shear washer, pressed by nut. When packer is removed, engaging assembly is utilized, which includes pusher, screwed on lower portion of screw couple screw, cut holder and cover. Through apertures are made on special part and moveable flange for connection of above-packer and below-packer well hollows.

EFFECT: lower costs and simplified maintenance.

6 dwg

Packer // 2251614

FIELD: oil production industry, particularly means for dividing an annular space and a tube space in flowing, gaslift, and beam wells.

SUBSTANCE: packer includes shaft with outer bored surface and bead and sealing members supported by the bead. Packer also has air cylinder forming annular cavity together with packer shaft. Cavity is connected with shaft interior through radial channels. Packer includes anchoring means. Lower anchoring means includes cone with slips and slip holder having bored inner orifice and threaded orifices. Lower anchoring means rests upon the bead and is connected to the shaft by shear screws installed in threaded orifices of slip holder. Shaft defines inner bored diameter and includes sliding bush located inside shaft. Shaft is provided with lower and upper grooves for sealing rings receiving and with outer grooves for cams and additional shear screws installation. Outer grooves are located between lower and upper ones. Slots are formed below bead on outer shaft surface for installing cams with limited radial travel. Threaded orifices are formed on outer shaft surface above inner groove thereof. Arranged into groove are additional shear screws to secure sliding bush in its initial position. The slip holder is freely installed on shaft or is spring-loaded. Support-moving bush is installed in inner bored orifice of slip holder between shear screws and cams. Support-moving bush is provided with facet formed from cam side and contacts with cams along mating facets upon shearing of shear screws. Free travel between cams and end of support-moving bush exceeds shear screw diameters to provide shearing thereof. When sliding bush is installed in fixed position cams extend above an outer shaft surface generator to provide displacement of support-moving bush and cut of shear screws. When sliding bush is located in operating position cams are located below outer shaft surface generator and move in radial direction into outer groove of sliding bush to provide free cam movement under support-moving bush and shear screws.

EFFECT: reduced number of lowering and lifting operations and breakdowns in the case or packer separation or during packer pulling out of well.

18 cl, 7 dwg

FIELD: oil and gas industry.

SUBSTANCE: device has body, made in form of branch pipe with elastic collar mounted on it, expanding assembly with cone, shear element, gear, lowered on pipes column into additional casing column and interacting with expanding assembly from above. Expanding element is positioned in upper portion of branch pipe and locked with its cone directed downwards, gear is made in form of pusher in lower portion and anchor assembly in upper portion. Pusher is made in form of hydraulic cylinder, made with possible pressure from above on expanding assembly and provided with piston and hollow rod, which is connected to piston rigidly, and to pipes column - hermetically with possible upward axial displacement. Anchor assembly is made in form of dies, mounted on hollow rod with possible radial movement outwards during movement of hollow rod upwards relatively to pipes column. Shear element holds hollow rod relatively to pipes column during lowering into well.

EFFECT: simplified construction, lower costs.

1 dwg

FIELD: mining industry.

SUBSTANCE: device has packer, mounting tool and anchor assembly. Packer expander is mounted in upper portion of body, and anchor assembly - above hydraulic chamber of mounting tool. Hydraulic chamber cylinder is mounted with possible displacement relatively to rod and hydraulically connected to inner space of device. Body of anchor assembly is provided with sockets, in which spring-loaded dies are mounted, which are activated by hydraulic effect formed in tubing pipes column, on which device is lowered into well.

EFFECT: simplified construction, higher reliability, higher efficiency.

1 dwg

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