Sharifov's support-mechanical packer (versions)

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

 

The invention relates to techniques for the production of hydrocarbons (oil, gas, gas hydrate) and reservoir pressure maintenance and can be lowered into the composition of one - or multi-pack assemblies into the well, particularly when dual use of several extraction and/or injection of objects (layer, interlayer) one flowing, gas lift, pumping, the piezometric or injection wells.

Known as the analogue of the mechanical packer (Patent RU 2290489 C2, publ. 27.12.2006, a total of 27 C.), comprising a barrel with an outer collar and a figured groove installed on the trunk from the bottom up centralizer in the form of a housing with external spring-loaded elements of resistance and inner stopper, plashkoderzhatelya and die, cone, sleeve, adjusting nut and clutch.

Also known as analogue of the mechanical packer (Patent RU 52082 U1, publ. 10.03.2006, only 7 C.), consisting of a hollow shaft with top and bottom subs and the other hand placed above and below the sealing cuffs.

These mechanical packer, but not anchor mechanical, as they consist of one solid (hard) trunk, from which they cannot be used as a packer focusing its trunk in the bottom of a well or neustanovlenii packer (for example, in the well with a multi-pack arrangement ARD or the EP). That is, when creating an axial load from the weight of the column of pipes) on these packer them the shaft to move down will not be as they are through the shank (tubing) firmly against the borehole bottom or bottom-set packer. For actuation of such packers need to have their trunks were free, that is, the bottom should not have any stops.

Known as the prototype packer separating unit for operation of the reservoir wells (Patent RU 2305170, publ. 20.10.2005, only 43 S., paragraph 32 PHI, 1, 16), comprising placed in the wellbore on a string of pipe having an open or plugged lower end, one or more downhole cameras with removable valves for flow of produced or injected environment nipple for removable valve and a few mechanical packers placed above and between the layers, and at least one of the mentioned mechanical packers connected to one or more of the elements: anchor fired from pipe pressure; telescopic connection; a disconnect switch; a shank and a pump.

In this installation, mechanical anchor packer is typically of the telescopic tube, consisting of two interconnected parts, with an outer collar or emphasis, adapter, o-rings and seals, casing with threaded radial hole is carved screws and tip, while the outside of the adapter installed in the adjusting nut with the possibility of changing the free motion of the sealing sleeves and exceptions escaping the top of them during its deformation, while the casing from an upper sealing sleeves made with the possibility of exceptions overflow, bottom, and outer diameter of the adjusting nut not less than the outer diameter of the casing, and the latter, in turn, greater than the diameter of sealing collars, besides the barrel and the casing is made can be locked relative to each other, while in the well every mechanical packer is set free or focusing underneath the shank on the bottom, freely mounted mechanical packer, or on the bottom, or at anchor, or the collar of the borehole.

Despite the fact that in this setting, the mechanical anchor packer is made with a telescopic tube, consisting of two interconnected parts, but he does not have the seal saarialho device for alignment of the packer, and to transmit a certain axial force at landing packer is not on the shank of the tubing so as to avoid its deformation), namely in the trunk (production casing) wells, resulting in a decrease in the reliability and integrity in the process.

After analyzing the above known solutions can make you the odes, the analogues are mechanical packers, but not the musculo-mechanical action, and therefore, as a rule, below the distinctive features of the descriptions are not in comparison with analogues, namely in comparison with the above prototype.

The aim of the invention is to improve the reliability and functionality of the function of the mechanical packer comprising a single - or multi-pack assemblies due to its alignment during landing and transfer of axial loads in the wellbore at the time of unloading the pipe string and through the cable entry on the trunk of the packer within the sealing cuffs.

Efficiency and technical result from the use of the musculo-mechanical packer comprising a single - or multi-pack composition is achieved by equipping its mechanical zakrivaem device and/or cable input, on the one hand, allowing you to center the packer landing, and the transfer of axial loads in the wellbore at the time of discharge column pipe and, in turn, provides a uniform deformation of the sealing cuffs and uniform movement of the dies hydraulic anchor in the event excessive pressure in the pipe and/or podvecerni cavity wells, and on the other hand, allowing the descent of this packer above the inlet of the rotary pump to isolate the leakage of the wellbore.

Option 1. PA the reference EP-mechanical includes a barrel with a hard outer shoulders and grooves under shear screws consisting of two telescopic interconnected upper and lower parts with the possibility of axial movement between itself and are equipped with sealing rings and cuffs, an adapter, an adjusting nut and a lock.

The purpose of the invention by variant 1 is achieved by the fact that to improve the health of the packer it is additionally equipped with a mechanical zakrivaem device installed freely below the sealing cuffs and consisting of interconnected cone with screw holes, flat dies and plashkoderzhatelya with the screw holes, which is connected with the lower part of the trunk, while the shear screws in the same or different number installed in the threaded holes of the cone, and plashkoderzhatelya, and when creating the axial load on the packer moves the upper part of the trunk relative to the bottom, cutting off the first shear screws plashkoderzhatelya, and then, after moving cone under flat dies and their emphasis in the wellbore, cut off shear screws cone, and then compressed sealing cuff. This packer can be equipped with hydraulic anchor the inner pipe and/or external pedacinho steps to exclude spontaneous move it up under pressure.

Option 2. Packer supporting-m is a mechanical includes the barrel, consisting of two telescopic interconnected upper and lower parts with the possibility of axial movement between itself and are equipped with sealing rings and cuffs, an adapter, an adjusting nut and a lock.

The purpose of the invention by variant 2 is achieved by the fact that to improve the health and functionality of the packer and its barrel is additionally equipped with fixed thereon mechanical zakrivaem or centering device consisting of interconnected cone, flat dies and plashkoderzhatelya installed above or below the sealing cuffs, and/or packer is made with a cable gland in the form of a longitudinal sealing deaf notches on his shaft inside of the sealing cuff. The packer can be equipped with hydraulic anchor the inner pipe and/or external pedacinho actions.

Principal views of the musculo-mechanical packer is provided in figures 1-7, in particular figure 1 - basic mechanical packer; figure 2 - the same, only with hydraulic anchor inner tube steps; figure 3 is the same, only with hydraulic anchor external pedacinho steps; figure 4 is the same, only with hydraulic anchor the inner pipe and the outer pedacinho steps; figure 5 is the same, only with cable gland; 6 - oporn the mechanical packer with a centering device over the sealing sleeves; figure 7 - basic mechanical packer (without saarialho device) with cable entry.

Principal layout view with the mechanical packer is provided in figures 8-10, in particular on Fig is tropicanna layout figure 9 - multi-pack arrangement; figure 10 - set ESP with two packers, divisive leakage of the wellbore.

Packer (Fig.1-7) reference-mechanical includes the stem from two interrelated 1 and 2 parts.

In figures 1-5, the barrel is made with resistant outer clamps 3, 4 and grooves 5, 6 under shear screws 7 and 8 and figures 6, 7 are made with resistant outer collar 3 and the groove 6. The barrel is equipped with sealing rings 9 and cuffs 10, the adapter 11 and the adjusting nut 12. And the packer can be equipped with a latch 13 (see figure 2, for example, in the form of a locking screw or projection of one part 1 or 2 of the barrel in the longitudinal groove of the other part 2 or 1 barrel etc) to prevent rotation between the two parts 1 and 2 of the barrel when the disassembly and Assembly of the packer.

Packer additionally equipped with a mechanical zakrivaem (see figure 1-5) or centering (see Fig.6) device consisting of interconnected cone 14, the flat plates 15 (with external teeth or without them) and plashkoderzhatelya 16. It can be installed freely under (see figure 1-5) or above (see Fig.6) uplotnitel the mi cuffs 10. The cone 14 and/or the plashkoderzhatelya 16 can be made with the screw holes 17 and/or 18 (for example, see figure 1, 6). Shear screws 7 and 8 in the same or a different number can be installed in the threaded holes 17 and 18 (see figure 1-5), respectively plashkoderzhatelya 16 and the cone 14. Thus plashkoderzhatelya 16 may be connected with the lower part 2 of the barrel. The seal 10 of the packer above and below can be equipped with protective rings 19 and 20 to prevent wicking during their deformation.

The packer can be equipped with hydraulic anchor the inner pipe 21 (see figure 2) or external (see figure 3) pedacinho 22 or the inner tube 21 and outer pedacinho 22 (see figure 4) steps.

To improve the functionality of the packer, it can be done with a cable gland in the form of a longitudinal sealing deaf slots 23 on its trunk under the sealing sleeves 10 (see figure 5, 7), where to place the power cable 24, for example, from ESP.

The lower packer into the well 25 according to figures 8-10 and set as follows. Creates an axial load on the mechanical packer through the discharge column pipe 26 after it stops its shank 27 or the shaft 28 of the hole 25 (see Fig), or planted on the lower packer 29 (see Fig.9-10) hydraulic, hydro-mechanical, impulse, mechanical or other actions. When this displacement is correspondingly the upper portion 1 of the barrel relative to the bottom 2. This leads to the packer in figures 1-5 (with or without cable 24) to move the cone 14 under flat dies 15 and stop them in the wellbore, and then compressed sealing lip 10. However, if you move the upper part 1 of the trunk first, cut off the screws 7 plashkoderzhatelya 16, and then, after moving the cone 14 under flat dies 15 and their emphasis in the wellbore, trimmed and cut 8 screws cone 14, and further compress the sealing lip 10. When planting packer on the figure 6 also cut off shear screws 7, and moves the upper portion 1 of the barrel relative to the bottom 2, which, in turn, leads to the displacement of the cone 14 under the flat plates 15, not resting against them in the well bore for alignment of the packer, and then the cone 14 rests on the plashkoderzhatelya 16, and further compress the sealing lip 10. And when planting packer in Fig.7 (with or without cable 24) similarly cut off shear screws 7, and moves the upper portion 1 of the barrel relative to the bottom 2, and further compress the sealing lip 10.

Well if you increase the pressure of the flow inside the packer (see figure 2) or on the outside of the packer under sealing sleeves (see figure 3), or inside and outside of the packer (see figure 4) die anchors radially rise and rest against the borehole wall that prevents unintentional movement of the packer is up against overpressure.

1. Packer anchor mechanical, including trunk with resistant outer shoulders and grooves under shear screws, consisting of two telescopic interconnected upper and lower parts with the possibility of axial movement between them, and are equipped with sealing rings and cuffs, adapter, adjusting nut and retainer, characterized in that it is additionally equipped with a mechanical zakrivaem device installed freely below the sealing cuffs and consisting of interconnected cone with screw holes, flat dies and plashkoderzhatelya with the screw holes, which is connected with the lower part of the trunk, while the shear screws in the same or different number of installed as in the screw holes of the cone, and plashkoderzhatelya, and when creating the axial load on the packer moves the upper part of the trunk relative to the bottom, cutting off the first shear screws plashkoderzhatelya, and then, after moving the cone under flat dies and their emphasis in the wellbore, cut off shear screws cone, and then compressed sealing lip.

2. Packer anchor-mechanical according to claim 1, characterized in that it is equipped with a hydraulic anchor the inner pipe and/or external pedacinho actions.

3. Packer anchor mechanical, including the surrounding barrel, consisting of two telescopic interconnected upper and lower parts with the possibility of axial movement between them, and are equipped with sealing rings and cuffs, adapter, adjusting nut and retainer, characterized in that the barrel is additionally equipped with fixed thereon mechanical zakrivaem or centering device consisting of interconnected cone, flat dies and plashkoderzhatelya installed above or below the sealing cuffs, and/or packer is made with a cable gland in the form of a longitudinal sealing deaf notches on his trunk inside sealing cuffs.

4. Packer anchor-mechanical according to claim 3, characterized in that it is equipped with a hydraulic anchor the inner pipe and/or external pedacinho actions.



 

Same patents:

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

FIELD: oils and gas production.

SUBSTANCE: group of inventions refers to methods and facilities for conservation, completion and repair of wells. The inventions facilitate control over the well during the said operations by means of assembling system of two partitions in well. Each of the partitions is located below the lower end of a flow string for well completion, when this string is installed into the well. As none of these partitions is installed higher in the borehole of the well, so both partitions rest in place during operations of conservation, completion and repair, which eliminates necessity to use a block of blowout preventers to facilitate reliable control over the well.

EFFECT: reduced cost of well construction due to reduced time required for operation of drilling rig.

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Test plug // 2361061

FIELD: oil and gas industry.

SUBSTANCE: invention refers to oil and gas industry and is designed for testing boreholes for pressure. Facility for a crushed plug consists of a pipe, in the section of which, in a designed for the plug chamber, there is assembled the plug. The plug contains several round glass disk elements of specified thickness arranged in layers one above the other. The plug in combination with sealing elements tightly closes the passage through the pipe, when a lower side of the plug is installed in the seat of the chamber. Film or sheet of any other, than glass, material is laid between various layers of the plug. The invention facilitates increasing test pressure and withstanding rapid fluctuations of temperature and load.

EFFECT: increasing test pressure and withstanding rapid fluctuations of temperature and load.

20 cl, 3 dwg

FIELD: oil and gas industry.

SUBSTANCE: facility refers to oil and gas industry. It is designed for disconnection of producing horizons and for sealing of circular space in interval of upper pipes of liner. The facility consists of a shaft with radial channels made in its walls. A piston designed to perform axial displacements is fixed on the shaft by means of a shear screw. Under the piston there is arranged an expanding cone and a seal containing collars resting on a lower sub, the upper end if which is made in form of a circular projection forming a shell, while on external side surface of the sub there are made lugs, which form centralisers. The invention facilitates preventing break of seal collars, and also preventing possibility of warp of axis of the facility relative to axis of the well due to improved design of the lower sub.

EFFECT: preventing break of seal collars, and also preventing possibility of warp of axis of facility relative to axis of well due to improved design of lower sub.

3 dwg

Packer // 2358089

FIELD: mining.

SUBSTANCE: packer consists of trunk with shaped slot, of centraliser, of self-sealing collar, of sealing element and of cone. A fixture with a guiding pin is assembled on the trunk below the cone; the fixture is intended to axial displacement. The fixture is equipped with oval sockets around circumference; the sockets are spring loaded internally in radial direction by means of springs and they interact with the cone during operation. A rod, capped from the top and connected below with the trunk, is screwed into the upper end of the trunk. At the top the rod is connected with a load equipped with a chamber in the lower part. The rod has radial openings and fingers located above the openings, while the load has lengthwise pass-through grooves for fingers of the rod. The lower part of the chamber is designed to shut off pressure tight radial openings of the rod, when the load goes down. Two axial short sections of the shaped slot are closed between them so, that the pin is situated within boundaries of the short axial sections - transport position - at axial reciprocal movement of the fixture relative to the trunk at length equal or exceeding length L of the short axial sections. When the fixture goes down relative to the trunk at a distance less, than length L of the short sections of axial parts and at following travel of fixture up, the pin goes to a longer axial section of the shaped slot, directed upward and set off along perimetre relative to the short axial sections - working position. Also the pin travels from working into transport position, when the fixture goes down relative to the trunk at a distance exceeding or equal to length - B of the shaped slot.

EFFECT: increased efficiency at multiple pressurising of production string due to possibility to shut off radial openings of rod pressure tight from outside.

2 dwg

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

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

Packer // 2347062

FIELD: oil and gas industry.

SUBSTANCE: invention refers to mechanical engineering and can be used for oil and gas production. Packer includes body, rod, upper and lower switchers, in-body cup and hydraulic cylinder. There is an annular space provided between hydraulic cylinder and rod, and containing a piston. The annular space cavity above the piston is connected to producing string column through the hole formed in the rod. The hydraulic chamber is formed with the hydraulic cylinder and the rod and filled with liquid. Between hydraulic chamber and annular space in the hydraulic cylinder, there is a packing sleeve with a slot used to connect cavity of the hydraulic chamber to the annular space cavity. The slot is stopped with valve arranged in the annular space below the packing sleeve. The valve is supported on the piston mounted below in the annular space and fixed in its initial upper position relative to the hydraulic cylinder with shear screws. The sealing cup is provided on the body between upper and lower protective collars. The upper protective collar is supported on upper switch, and the lower protective collar rests on the hydraulic cylinder through retainer num in-between.

EFFECT: higher downhole performance especially that of several beds with selective processing using number of packers.

1 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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