Drilled out parker

FIELD: oil-and-gas production.

SUBSTANCE: invention related to oil-and-gas production, particularly used to protect casing string from high pressure. Drilled out parker contains setting tool, including hydro cylinder with bottom support, piston, top and bottom rods, bottom one has radial canal and fixedly connected via tip with access holes to perforated nipple, seal assembly, including collar, deformable sleeve and dron with nozzle, connected on top to sleeve holder, telescopically fixed to support, and on the bottom with a nozzle via share ring with a tip and perforated nipple, which telescopically installed into dron, equipped with external cylindrical areas with external diameters increasing from top to bottom, cutoff valve and end plug, fixed on nozzle with stop collar. Sleeve holder and external support in its transit condition fixed between each other with shear bolt, cutoff valve consists of end plug with external ring , hermetically installed into tip and fixed with stoppers, which installed into nozzle access holes, allowing it limited outwards displacement in case of share ring damage and dron pass through, and also allowing in transit condition internal interaction with plug ring, externally - with dron, which external cylindrical areas connected via smooth transition.

EFFECT: application of drilled out parked with dron improved design allow to increase its installation safety and avoid "creep", and also cutoff valve designed as a plug except leakage during drilled out parker installation into well.

2 dwg

 

The invention relates to the oil industry, namely to the means of protecting the casing from the high pressure.

The famous "Packer" (see EN No. 2162137, IPC 7 EV 32/12, bull. No. 1 from 20.01.01), including socket placed on the outer surface of the sealant in the form of an elastic membrane and extending the cone associated with a drive through cravings, when the expansion cone made of composite cylinder and concentrically mounted on it an expansion element connected between a divisive element to release the expansion element from the cylinder and descent of the production string of tubing is installed on the lower end of the plunger with the sealing elements for engagement with the inner wall of the expansion element, the inner diameter of which is selected under the outer diameter of the plunger.

The famous "Packer to be drilled (see certificate for a utility model No. 20342, IPC EV 32/12, bull. No. 29 from 26.10.01)containing boarding tool, comprising a cylinder with a piston, the upper and lower rods, the latter has a radial channels and rigidly connected to the adapter and profile nipple, the seal Assembly comprising a sleeve, a deformable sleeve, a mandrel connected in the upper part of the installation sleeve, and in the lower part through the shear ring - with NASA is coy with the inner cylindrical sample, the cover with retaining ring and shear screw and the cutting element mounted in the Central channel in the area of the adapter, while the cutting element is designed in the form of a tube, and the installation sleeve - ring sample, the adapter is provided with a lock to spacerace one end communicates with the shut-off element, and the other with the mandrel, and after spacerowa - ring sample installation sleeve.

Both of the above devices share common disadvantages:

first, there is no protection from surges that occur in the boarding tool during the descent, which may lead to unauthorized landing of the packer;

secondly, the low reliability of the landing, as if the pressure inside the tubing, which descends the device in the hole, they stretch and have a shearing effect on the set packer.

The closest in technical essence and the achieved result to the present invention is the drillable Packer" (see certificate for a utility model No. 28371, IPC 7 EV 33/12, bull. No. 8 dated 20.03.2003)containing boarding tool, comprising a cylinder with a piston, the upper and lower rods, one of which is executed with the radial channels connected to the pipe, and the latter focusing, sealing unit including an elastic sleeve, a deformable sleeve and the RSAs with conically-cylindrical sections on the outer surface, connected at the bottom with nozzle, and top with the alignment sleeve, the tip telescopically mounted in the mandrel, the nipple shut-off valve and cap with retaining ring, while the bottom end stop is made with a spherical annular sample, converted to the periphery and interacting in working position with a deformable sleeve, and the outer diameter of cylindrical sections of the mandrel increases from top to bottom.

The drawbacks are:

firstly, the possible leakage shut-off valve, made in the form of a ball due to clogging of the saddle in the process of tripping, which leads to the inability to create the desired pressure in the string of pipe and, accordingly, in the boarding tool when planting drillable packer;

secondly, the mandrel due to its imperfect shape design secures the sleeve to the inner walls of the production casing is not evenly along the entire length, which can lead to leaking planting packer in a given interval and/or "creep".

The technical object of the present invention is the elimination of leakage in the shut-off valve when planting packer, drilled well, and reliable fixation of the packer, to be drilled in the desired interval of the well by changing the shape of the mandrel.

T is nicheskaja problem is solved by a drillable packer, containing boarding tool, comprising a cylinder with a bottom support, a piston, upper and lower rods, the latter of which is made with radial channels and rigidly connected with a handpiece having apertures, a perforated nipple, the seal Assembly comprising a sleeve, a deformable sleeve and the mandrel with a nozzle connected to the upper part of the installation sleeve telescopically mounted in emphasis, and in the lower part by means of a nozzle through the shear ring - tip and perforated nipple, which is telescopically mounted in the mandrel, fitted outer cylindrical sections with an increasing outer diameter from top to bottom, shut-off valve and the cover is fixed to the nozzle retaining ring.

What's new is that the installation sleeve and the lower stop in the transport position is fixed between a shear screw, shut-off valve made in the form of tubes with an outer annular sample is hermetically inserted into the tip and fixed the brakes, which are inserted in the holes of the tip with a limited move outward when the destruction of the shear ring and the passage of the mandrel, as well as the possibility of cooperation in the transport position inside the ring sample tube, and outside - with Dorn, qi is indijskie outer sections which are connected by a smooth transition.

Figure 1 shows the drillable packer Assembly with a partial longitudinal section.

Figure 2 shows in section the fixation of the stopper drilled in the packer in the transport position.

The drillable packer contains a planting tool 1 (see figure 1), containing the cylinder 2 with the lower stop 3, a piston 4, the upper 5 and lower 6 rods. The lower rod 6 is provided with radial channels 7 and is rigidly connected through the tip 8 having holes 9 (see Fig 2), with perforated Windows 10 (see figure 1) nipple 11.

Seal Assembly 12 includes a sleeve 13, a deformable sleeve 14 and the mandrel 15 with the nozzle 16 connected to the upper part of the installation sleeve 17, telescopically mounted in the stop 3. In the lower part of the mandrel 15 with the nozzle 16 through the shear ring 18 connected to the tip 8 and a perforated nipple 11 which is telescopically mounted in the mandrel 15, equipped with outer cylindrical sections 19 and 20 with increasing outer diameters of D1and D2from top to bottom, respectively. Inside tip 8 installed shut-off valve 21 and the nipple 11 is plugged by a plug 22 with the retaining ring 23. Installation sleeve 17 and the lower stop 3 in the transport position is fixed between a shear screw 24.

Shut-off valve 21 is made in the form of a tube with an outer annular sample 25 (see figure 2), GE is metecno inserted into the tip 8 (see figure 1 and 2) and fixed by stoppers 26, which are inserted in the apertures 9 tip 8 with limited move outward when the destruction of the shear ring 18 (see figure 1) and the passage of the mandrel 15 (see figures 1 and 2), as well as the possibility of cooperation in the transport position inside the ring sample tube 21, and outside - with the mandrel 15, the cylindrical outer sections 19 and 20 (see figure 1) which are connected by a smooth transition 27.

Unauthorized overflows of liquid removed by the installation of the sealing rings 28, 29, 30, 31, 32 and 33.

The device operates as follows: the drillable packer Assembly lowered into the borehole (figure 1 and 2 not shown) on the string of pipe 34. During descent, experiencing the shock of the mandrel 15 and the inside wall of the production casing of the well (figure 1 and 2 is not shown). To exclude the possible movement of the mandrel 15 is relatively deformable sleeve 14 and unauthorized actuation device installed shear screw 24, the retainer mounting sleeve 17 relative to the stop 3.

Upon reaching the installation interval of drillable packer column pipe 34 is filled with process fluid, after which the inside of the pipe string 34 creates excess pressure through the upper rod 5 and the radial channels 7 of the lower shaft 6 is transmitted to the hydraulic cylinder 2 and affects the Porsche is ery 4, which is held in the start position until the failure strength shear screws 24.

When this column pipe 34 is extended under the action of excess pressure. After the destruction of screws 24 (for example, at a pressure of 4-5 MPa) piston 4 moves upward relative to the cylinder 2, pulling the lower rod 6, the tip 8 with a perforated nipple 11, the mandrel 15 (through the shear ring 18 through nozzles 16) and the mounting sleeve 17. This deformable sleeve 14 with the sleeve 13 is held by the stop 3 in place relative to the casing (figures 1 and 2 is not shown).

As a result, the mandrel 15 is included in the deformable sleeve 14, extending it to a snug fit cuff 13 to the inner walls of the production string and the mandrel 15 first dernire deformable sleeve 14 of the cylindrical section 19 of smaller diameter D1pressing tightly cuff 13 to the inner walls of the production string, and then, as the movement of the mandrel 15 up through a smooth transition 27 already continues to cornrowing the lower portion of the deformable sleeve 14 of the cylindrical portion 20 of larger diameter D2thanks cuff 13 even more strongly pressed against the inner walls of the well. Carnerosana mandrel 15 deformable sleeve 14 is up until the adjusting sleeve 17 (see figure 2) will not run down the Hydra the cylinder 2, limiting further movement of the mandrel 15 up. Further increases the pressure inside the tubing 34 to the destruction of the shear ring 18 (e.g., 14-15 MPa)with the release of the tip 8 with a perforated nipple 11 of the mandrel 15.

As a result, the tip 8 is moved upward relative to the mandrel 15 and the stoppers 26, inserted in the holes 9 of the tip 8, moved out, because out of engagement with the inner walls of the mandrel 15, until it stops in the inner wall of the mounting sleeve 17 and at the same time escaping from the outer annular sample 25 shut-off valve (tube) 21, which falls down perforated nipple 11 to the upper end of the stub 22.

In the end opens the channel 35, allowing the passage of fluid through the string of pipe 34 through the perforated box 10 pin 11 under seal Assembly 12 of the packer, to be drilled in the bypass shut-off valve 21. After that, the string of pipe 34 through the top 5, bottom 6, the rod, the tip 8, the holes 9 and the channel 35 can be downloaded plugging material into the space well under seal node 12 drillable packer. Then the string of pipe 34 is lifted, the cover 22 is hermetically installed in the mandrel 15 and the retaining ring 23 of the nozzle 16 locks the plug 22 at its outer annular sample 36. K the position of the load, sufficient to fracture shear elements 37, perforated nipple 11 is released from the cover plate 22 and planting tool 1 is washed.

Upon completion of all operations of the device removed from the wells, except for the sealing unit 12 with a nozzle 16 and the cap 22. In this case, all left in the hole parts of the device are made of legkorazmyvaemykh materials (such as cast iron, aluminum and the like).

The use of drillable packer due to the improved design of the mandrel will improve the reliability of the landing of drillable packer in a given interval of the well and prevent it from "slipping", and also due to the design of shut-off valve, made in the form of a tube, prevents its leakage when planting packer, drilled in the well.

The drillable packer, contains boarding tool, comprising a cylinder with a bottom support, a piston, upper and lower rods, the latter of which is made with radial channels and rigidly connected with a handpiece having apertures, a perforated nipple, the seal Assembly comprising a sleeve, a deformable sleeve and the mandrel with a nozzle connected to the upper part of the installation sleeve telescopically mounted in emphasis, and in the lower part by means of a nozzle through shear Kohl is about - with a tip and a perforated nipple, which is telescopically mounted in the mandrel, fitted outer cylindrical sections with an increasing outer diameter from top to bottom, shut-off valve and a plug fixed in the nozzle retaining ring, wherein the mounting sleeve and the lower stop in the transport position is fixed between a shear screw, shut-off valve made in the form of tubes with an outer annular sample is hermetically inserted into the tip and fixed the brakes, which are inserted in the holes of the tip with a limited move outward when the destruction of the shear ring and the passage of the mandrel, as well as the possibility of cooperation in the transport position from the inside with ring sample tube, and outside - with the mandrel, a cylindrical outer sections which are connected by a smooth transition.



 

Same patents:

FIELD: mining.

SUBSTANCE: this group of inventions refers to the mining industry, and in particular, to the borehole systems and the method of use of the borehole component. The method includes the use in the borehole component the seal having the filler in the form of nanofibre and implementation of the effect of the component within the hole. The system has the downhole tool having compacting element including polymer material. In the polymer material nanosize filler in the form of carbon nanotubes is dispersed.

EFFECT: this invention allows to improve the durability and improve the functioning of the downhole tools operating in the hostile underground environment.

27 cl, 13 dwg

FIELD: oil and gas production.

SUBSTANCE: invention relates to oil-producing industry, particularly to mechanical packers, used at operation of oil wells by electrically centrifugal pumps. Packer contains mine shaft with threads on butts and axial channel. On external surface of mine shaft it is figured groove, long slot blind below and open in top part of mine shaft. In middle part of mine shaft there are installed rests for cone. In top part of mine shaft by diametre there are implemented transverse slots, in which there are adjusting screws rigidly connecting mine shaft and rest. Under rest there are located sealing elements, cone and iron ring with ability of axial movement relative to mine shaft. In iron ring there are located toothed bowl slip sockets, guide pin and split keys rigidly connecting it to ring in axial direction. Into long slots of ring there are installed screw-thread dies, pressed in radial direction by springs. In area of coupling long slot is overlapped by washers with sealant.

EFFECT: invention provides for simplicity of erection and improvement of abhesion of tube space at usage of electrically centrifugal pump in untight wells.

1 dwg

FIELD: oil and gas production.

SUBSTANCE: invention can be implemented for pull-out of holes, for example for hydraulic break of beds (HBB) operated with one well. The hydro-mechanic packer lowered into a well on a flow string consists of a mandrel made in form of two pipes, of sealing elements with a hold-down device, of an upper anchor with a hydraulic drive, and of a lower anchor with a mechanic drive connected to each other with a bayonet joint. The bayonet joint consists of a bushing with slots located in the upper part of the packer; pins arranged on a bushing in the lower part of the packer come into the slots and interact with surfaces of the slots. Two shaped grooves set off at 180 relative to each other are made on side surface of the upper bushing; the upper part of grooves is conjugated with a cut. Unfolded pattern of each of grooves corresponds to working surface for directing the pin into the above said cut; working surface is situated at acute angle to plane of cross section conjugated with lengthwise cut. Its lower working surface is made at angle to plane of cross section of the packer equal to angle of friction of pair of metals interacting details are made out of; also the said angle is directed counter clockwise, if details of the packer are left sided.

EFFECT: improved operation characteristics.

1 cl, 4 dwg

FIELD: oil and gas production.

SUBSTANCE: invention refers to oil production, particularly to repair and operation of oil and gas wells. The packer for shutting off internal cavity of flow string consists of a case with the central channel and upper and lower stops with a sealing component fixed in between; the sealing component has one thickened and one thin-wall inserted-joint parts; the latter forms a cavity with an external wall of the case communicating with outer space of the facility; also a self-sealing collar is made on external surface of the sealing component. The central channel of the case from below is equipped with a back valve with a saddle secured in the case with a shear screw. The self-sealing collar is designed to let flow up-down, while the cavity communicates with external space via the lower stop; also from above the case is equipped with a hollow branch with a piston, outside of which there is located a cylinder with a collet below, communicated with internal cavity of the sleeve and designed to a restricted motion upwards. Internal surface of the collet is of a cone shape narrowing downward; it interacts with the piston, while external surface is equipped with lugs designed to interact with internal surface of flow string.

EFFECT: reliable operation under high pressure due to more fail-safe insulation of annular space.

1 dwg

Hydraulic packer // 2366798

FIELD: oil and gas production.

SUBSTANCE: hydraulic packer consists of a hollow mandrel, whereon there are secured an anchor with bowl slip sockets, spring-loaded in radial direction, and a shell forming circular cavity with external surface of the stem; the packer also consists of a sealing component, of a bushing-pusher with radial slots and a radial opening communicating with circular cavity, of cams installed in radial slots of the bushing-pusher, fixing it on the stem and designed to perform axial displacements, of a piston connected to the bushing-pusher with shear screws. A cone is rigidly connected with the piston, a ram holder with radial slots is secured on the stem with shear screws, screw-thread dies with end collars, arranged in radial slots of the ram holder, are assembled on the stem. There is a cylinder fastened on the bushing-pusher and a ratchet assembled on the cylinder for fixing the cylinder relative to the piston. According to the invention the packer is equipped with upper and lower stay nuts with internal circular lug; the nuts are correspondingly secured on the anchor and on the bushing-pusher, with a stop ring installed on the shell and designed to interact with the circular lug of the lower stay nut; also the shell has an external circular lug installed in the anchor, designed to perform axial displacements and to interact with the circular lug of the upper stay nut; while the sealing component is located on the shell between the upper and lower stay nuts.

EFFECT: increased reliability of packer operation.

2 cl, 2 dwg

FIELD: oil and gas production.

SUBSTANCE: group of inventions is related to oil and gas production industry, in particular, to packer systems used to separate annular and tubular spaces of well. Packer system comprising hydraulic packer and anchor, for well with conventional external diametre of shaft of 140-146 mm. Packer comprises shaft, adjusting nut, sealing ferrules, which are installed either on nozzle or shaft, shear screws, hydraulic cylinder-piston, anchoring device of hydraulic action. The latter comprises cone with plates and plate holder, is arranged with the possibility of rest against shaft collar, and is connected to shaft by shear screws. Packer shaft is connected to anchor by upper tube thread. In order to provide for throughput diametre of small packer system within the limits from 55 to 62 mm, provided that dangerous section along shaft body is maintained as at least 7 cm, packer shaft is made, depending on its selected throughput diametre, either with upper and lower combined tubular threads - drilling with end H 60 extended outside and tubing stings 73, smooth or extended, or with upper and lower identical tubular threads - drilling with end H 60 extended outside, or with upper and lower identical tubular threads - tubing strings 73, smooth or extended.

EFFECT: provides for relative high throughput diametre of packer for well with shaft diametre of 140-146 mm, and also improved reliability and efficiency of simultaneous-split operation for producing injection and piezometric wells.

2 cl, 3 ex, 9 dwg

FIELD: oil and gas production.

SUBSTANCE: group of inventions is related to procedure of hydrocarbons production and maintenance of bed pressure. Support-mechanical packer comprises shaft with thrust external collars and grooves for shear screws, which consists of two telescopically mutually connected upper and lower parts with the possibility of their axial displacement relative to each other, and equipped with sealing rings and ferrules, adapter, adjusting nut and fixator. In order to increase serviceability of packer, it is additionally equipped with mechanical anchoring device, which is installed freely under or above sealing ferrules and comprising the following mutually joined components: cone, flat plates and plate holder. In order to increase serviceability and functionality of packer it may be arranged with cable input in the form of sealing longitudinal dead slot on its shaft inside sealing ferrules.

EFFECT: invention objective is to improve reliability and functionality of support-mechanical packer operation.

4 cl, 10 dwg

Packer // 2363833

FIELD: oil and gas production.

SUBSTANCE: invention refers to oil and gas producing industry, particularly to well installations for repeated, including selective, flow tests of flow string in well. The packer consists of a mandrel with a shaped slot on external surface, where axial short and long sections alternate. Self-packing collar, downstream proof, is assembled on the top of the mandrel; a support is located under the collar. A pressure sealing element in form of an additional self-sealing collar, downstream proof, and a cone rigidly fixed relative to the mandrel are successively arranged under the support on the mandrel. A holder with a guiding pin is arranged on the mandrel below the cone. Along circumference the holder is furnished with spring centralisers and oval sockets which are spring loaded inwards in radial direction by means of springs and are designed to interact with the cone in a working position from inside. A rigid centraliser is assembled on the upper end of the mandrel. A rod cupped from top and furnished with radial holes is screwed into the upper end of the mandrel. A load with a chamber at the bottom is arranged outside the rod. The rod is equipped with fingers assembled above radial holes; while the load is equipped with lengthwise through grooves for the fingers of the rod. The lower part of the load chamber, covering radial holes of the rod leak proof by means of sealing elements, is designed to open radial holes of the rod when the load goes up. Correspondingly, process upper radial channels are made in the load above the lengthwise through grooves and the mandrel below the shaped slot; these channels continuously communicate internal space of the load chamber with external space; also there are made lower process channels below which the mandrel is shut off with an additional load. Axial short and long sections of the shaped slot are interconnected with a closed shaped section.

EFFECT: facilitating flow testing of pipes of smaller diametre, also avoiding packer wedging in flow string during round-trips.

2 dwg

FIELD: oil and gas production.

SUBSTANCE: invention refers to construction and operation of oil and gas wells, particularly to sealing of annular space of casing liner in well. The facility consists of a transporting column, of a packer unit in form of a mandrel, of a sealing element installed therein, of cone for the sealing element connected to the mandrel and of a puller interacting with the sealing element. The puller is arranged outside the mandrel and connected to it with at least one shear element; also the puller is connected to the transporting column with a detachable unit. Notably, the facility is equipped with an anchor in its lower part; the anchor serves for engagement with internal relief surface of the liner in its upper part.

EFFECT: facilitates simplification of design of facility, increased reliability of its operation and expanded functionality.

5 cl, 2 dwg

FIELD: oil and gas production.

SUBSTANCE: invention refers to oil and gas industry, notably, to inflated packers. It contains a packer mandrel, a packing element and a swelling material. The packing element is assembled over the packer mandrel; there is a circular gap between the packing element and the mandrel. The material is placed in the circular gap and is designed to capture at least part of medium supplied into the circular gap between the swelling material and the packing element.

EFFECT: facilitates maintaining tightness after expanding regardless of damage or change of conditions in well.

20 cl, 6 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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