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.
EFFECT: saving of time required for removal, avoiding unnecessary lowering and raising operations, as well as guaranteed removal of plug packer out of the well.
The invention relates to the oil industry and is intended for temporary overlap of the wellbore when carrying out insulation works in workover, the study reservoirs, operation or injection of liquids.
Known packer, containing a hollow barrel with a plug and stop, mounting retainer, drive housing and rod installation cylinder placed on the trunk of a cone with slipcase, sealing element and the latch position of the sealing element with the retaining jaws (RF patent No. 2137901, IPC 6 EV 33/12, publ. in bull. No. 26, dated 20.09.1999,).
The disadvantage of the packer is the design complexity due to the presence of complex parts, such as the cone, the position lock of the sealing element with the holding jaws, conical liners that require high precision in the manufacture and greatly complicate the Assembly that can be performed only in specialized workshops. Failure to comply with the stringent requirements in the manufacture and Assembly reduces the reliability of the packer.
The closest in technical essence is the packer / plug (patent RF №2259466, IPC 7 EV 33/12, publ. in bull. No. 24, 27.08.2005, including the trunk with the cover and supports the sealing element, the position lock of the sealing element, the main cone, with whom were associated the si compound dovetail, removable node, the locking balls mounted in the holes in the trunk and interacting with removable node, the housing and the piston rod of the landing tool and shear elements, while the packer is provided with an additional cone set as master on the trunk, which is associated with slips connection "swallow's tail", the latter have notches opposite direction to the main slipcam and - thrust ring with Windows longitudinal side of the stem located between the primary and secondary slipcase associated with the ends of the retaining ring T-junction; a barrel provided with lugs installed along the perimeter and at the same level between additional slipcase with pass through window to the thrust ring and interacting in the working position with the main cone; the barrel has on the inner surface of the cylindrical sample, and the removable unit is designed in the form of a pipe with a cylindrical sample in the upper part of the outer surface; the main cone with the barrel is connected via shear elements, and the stem planting tool with plug - bursting through the element.
The disadvantages of this design are:
first, a complex process of extraction, since it is necessary to first lift the packer-tube, and then to omit it, hitting a removable node of the cover, the ri if this fishing tool lowered into the well on a rope, you must choose a weight so that the force of the blow removable node on the cover was enough for additional cone fell down, but you can also leaking and damage to the sealing element of this design. All this complicates the process of retrieving the packer-tube from the borehole;
secondly, many dependent on each other details that the extraction process can lead to blockages additional clipshow, resulting in an emergency situation occurs in the well.
The objective of the invention is to simplify the technology of extracting packer-tube, and its guaranteed to be extracted from the well.
This problem is solved by the proposed packer-tube, comprising a barrel with an internal cylindrical sample, blank and stops, sealing element, the position lock of the sealing element, the main cone, which is associated with slips connection dovetail, removable node, the locking balls mounted in the holes in the trunk and interacting with removable node, the housing and the piston rod of the landing tool and shear elements, while the packer is provided with an additional cone set as master on the trunk, which is associated with slips connection "swallow's tail", the latter have notches opposite direction to the main slipcam, is also - thrust ring with Windows longitudinal side of the stem located between the primary and secondary slipcase associated with the ends of the retaining ring T-junction, while the barrel is fitted with lugs installed along the perimeter and at the same level between the extra slipcase with pass through window to the thrust ring and interacting in the working position with the main cone, while the removable unit is designed in the form of a hollow pipe with a cylindrical sample in the upper part of the outer surface, the main cone with the barrel, and the barrel with a removable node is connected shear elements, the discontinuous element.
What's new is that the sealing element is designed in the form of barrel-shaped seals, separated by a support ring, and a removable node muted on the top and inside of the stem planting tool, which is made hollow and a discontinuous element is connected with the barrel, and the cap is made in the form of a hollow transverse partitions mounted inside the barrel, and a hollow sleeve, rigidly fixed to the secondary cone on the outside, while the rod of the landing tool is installed inside a removable node and connected to the hollow transverse partition bursting element, and the bottom in the dead of the transverse partition upert spring down hollow top is, placed inside the lower end of the barrel, the barrel below the deaf transverse septum is supplied through a vertical slot in which the possibility of axial movement has a finger connected to one side with an additional cone, and on the other with a spring-loaded hollow glass.
Figure 1 shows the proposed packer-tube in longitudinal section.
Figure 2 - a section a-a figure 1.
Figure 3 - view I close-UPS.
Packer-tube consists of a barrel 1 (Fig 1) with an inner cylindrical sample 2, with the outer side of which is installed sealing element 3 with the stop 4. Above the latter is resistant sleeve 5, and between it and the stop 4 - retaining ring 6 with notches (figure 3). On the shaft 1 (figure 1) against the stop plate 4 is made of a circular notches 7 of the opposite direction to the notches of the ring 6. Below the sealing element 3 are fixed cone 8 with the main slipcase 9, the retaining ring 10 and an additional cone 11 with additional slipcase 12. The main slips 9 and additional slips 12 with the main cone 8 and an additional cone 11, respectively, are connected dovetail, and with the end faces of the thrust ring 10 - T-junction. The barrel 1 is provided with lugs 13 (figure 2), located on the perimeter and at the same level between the extra slipcase 12 with pass through window is 14 in the thrust ring 10 (Fig 1) and interacting in the working position with the main cone 8. Inside the barrel telescopically 1 is fitted with a removable node 15 in the form of a pipe with an outer cylindrical sample 16 in the upper part. In the lower part of the trunk 1 are radial holes 17, which is installed with the locking balls 18. The cover is made in the form of a hollow transverse partitions 19 mounted inside the barrel 1, and a hollow sleeve 20, rigidly attached to the secondary cone 11 on the outside. Deaf transverse partition 19 and the shaft 1 can be made as a single part. The balls 18 are interacting with one hand removable node 15, and on the other side with a hollow sleeve 20.
Shear elements 21 and 22 of the barrel 1 is connected respectively with a removable node 15 and the main cone 8. Stop 4 rests on top of the housing 23 of the planting tool. Removable node 15 muted at the top and the stem 24 of the planting tool is made hollow and is connected with the barrel 1 discontinuous element 25.
Below in the dead of the transverse wall 19 apart spring-loaded by means of spring 26 down the hollow glass 27 is placed inside the lower end of the barrel 1, and the spring 26 is in a compressed state. The shaft 1 below the deaf transverse partition 19 is supplied through a vertical groove 28, in which the possibility of axial movement has a finger 29, rigidly connected to one side with an additional cone 11, and on the other, with the spring loaded is olym glass 27. The sealing element 3 is designed in the form of barrel-shaped seals (in this case two), separated by a support ring 30. Unauthorized overflows of liquid are excluded sealing rings 31, 32.
The device operates as follows.
Packer-tube in the transport position (figure 1) is lowered into the desired interval of the well, and then actuate the landing tool. The housing 23 of the planting tool exerts pressure on the stop 4, and the rod 24 connected bursting element 25 with the barrel 1, pulls up the barrel 1 and its associated parts 8, 9, 10, 11, 12, 19, 20, 26, 27, 28, 29. In this moment there is compression of the sealing element 3 and clamped it to the casing. At rated load is the destruction of the shear elements 22, after which the core 8 and an additional 11 cones bump on slips 9 and additional slips 12, respectively, pushing them, the last come into contact with the casing, the fixing device in the well. Upon further tightening of the rod is donatie sealing element 3. The ring 6 is fixed in the annular notches 7 of the barrel 1, the position of the sealing element 3 in the final spacerunner condition.
Upon reaching the design load landing packer explosive element 25 is destroyed, freeing the self is haunted boarding tool, which is then removed from the well and the packer / plug remains in the isolated interval of the well, then the well conduct the planned scope of work.
For removal of the packer plug is lowered into the well fishing tool (not shown), which captures the packer-tube below the lower end of the outer cylindrical sample 16 removable node 15. Do the stretch tool, the cutting elements 21 are destroyed, while the removable node 15 is lifted by the value of "L" (Fig 1), and the balls 18 fall inside of the table 1 at the blank transverse partition 19, and therefore the shaft 1 is released from the adjacent parts. With the further rise of removable node 15 together with the barrel 1 the load is removed from the sealing element 3, and it comes in its original position. The lugs 13 affect the main cone 8, with the result that he rises and removes the load from the main clipshow 9, which are shifted to the center and away from the casing. Simultaneously, additional cone 11 is released from the locking balls 18, together with a hollow Cup 27, which is connected by means of the fingers 29, due to the return force of the spring 26 moves downward. The fingers 29 in conjunction with hollow glass 27 and an additional cone 11 make axial movement down through the vertical slots 28 of the barrel 1 as long as the fingers 29 will rest against the lower the second end through vertical slots 28.
Additional cone 11, kneeling down, frees up additional slips 12, which depart from the inner walls of the casing and are shifted to the center. The process of respitrace packer-tube is finished and it can be raised to the surface.
Simplified extraction technology packer-tube allows you to save time by removing, eliminating unnecessary tripping, lifting, and guaranteed to retrieve the packer-tube from the well, avoiding emergency in the well.
Packer tube, comprising a barrel with an internal cylindrical sample, blank and stops, sealing element, the position lock of the sealing element, the main cone, which is associated with slips connection dovetail, removable node, the locking balls mounted in the holes in the trunk and interacting with removable node, the housing and the piston rod of the landing tool and shear elements, while the packer is provided with an additional cone, set as primary, on the trunk, which is associated with slips connection "swallow's tail", the latter have notches opposite direction to the main slipcam and - resistant ring with Windows longitudinal side of the stem located between the primary and secondary slipcase associated with the ends of the retaining ring T-junction, with STV is l provided with lugs, installed along the perimeter and at the same level between the extra slipcase with pass through window to the thrust ring and interacting in the working position with the main cone, while the removable unit is designed in the form of a hollow pipe with a cylindrical sample in the upper part of the outer surface, the main cone with the barrel, and the barrel with a removable node is connected shear elements, the bursting element, characterized in that the sealing element is designed in the form of barrel-shaped seals, separated by a support ring, and a removable node muted on the top and inside of the stem planting tool, which is made hollow and bursting element is connected with the barrel, and the cap is made in the form of a hollow transverse partitions mounted inside the barrel, and a hollow sleeve, rigidly fixed to the secondary cone on the outside, while the rod of the landing tool is installed inside a removable node and connected to the hollow transverse partition bursting element, and the bottom in the dead of the transverse partition upert spring down the hollow glass inside at the lower end of the barrel, the barrel below the deaf transverse septum is supplied through a vertical slot in which the possibility of axial movement has a finger connected to the od of the second side with an additional cone, and on the other with a spring-loaded hollow glass.
FIELD: oil and gas industry.
SUBSTANCE: invention is related to oil and gas production industry and is intended for overlapping of intertubular space and performance of isolating works in case of wells overhaul. Drillable packer contains shaft with notches on external surface, the following components installed on shaft - combined sealing element, extrusion washers, upper and lower rupture screw-thread dies, movable upper and fixed lower supports, fixator in the form of split spring rings in annular bore of movable support. Packer shaft is equipped by left sub with calibrated annular bore and nipple in axial channel, which is rigidly connected to left sub and equipped with fitting valve in axial channel in the form of sleeve with dead bottom and radial holes covered with bushing equipped with throttle. Bushing is connected to sleeve by calibrated shear element. Bottom support is equipped with spring-loaded check valve in the form of body with plug in middle part and radial holes, elastic sealing collar at the lower end, installed with the possibility of interaction with seat in axial channel of lower support.
EFFECT: increase of intertubular space sealing reliability, and also increase of fitting tool functional resources by its multiple usage.
3 cl, 4 dwg
FIELD: oil-producing industry.
SUBSTANCE: invention is related to oil-producing industry, namely to method of packering in operation and development of oil wells. Packer contains hollow shaft with the main sealing element and multifunctional channel installed in the shaft and filled with filler, where at least one cable and one control instrument are located. Packer is equipped with additional sealing element, which is installed on the hollow shaft at the preset distance from the main sealing element with formation of circulation chamber between them after packer installation in intertubular space, the chamber communicates by means of control instrument installed in multifunctional channel with subpacker zone, and at least one relief valve/controller, which is installed under the main sealing element and accordingly installed in the transverse channel, arranged in the hollow shaft, or at least in one well chamber installed under the main sealing element. The external diameter of hollow shaft between the sealing elements does not exceed the diameter of sealing elements. Control instrument, which is installed in multifunctional channel, is installed in its bottom part. Circulating chamber is installed with the possibility of communication with internal cavity of hollow shaft by means of relief valve/controller. It provides increase of packer operation efficiency during pump operation of wells.
EFFECT: increase of packer operation efficiency in pump operation of wells.
5 cl, 2 dwg, 1 ex
SUBSTANCE: invention concerns geophysical methods of well investigation and can be applied in well bore zone sealing during logging research. The device comprises a transformable frame holding a fluid-stopping unit. This unit includes a fiber layer made of organic or natural polymers and/or fiber glass. Additionally the device includes fiber a collecting unit made of permeable fabric, net or perforated material. Also the case holds a spring or umbrella unit implementing case expansion in a borehole. The case is made of materials at least poorly soluble in oil well fluid.
EFFECT: streamlining of technology packer placement in a well.
FIELD: drilling equipment, particularly devices for assembled blowout equipment pressure-testing.
SUBSTANCE: device comprises shaft with central channel and elastic packing member installed on the shaft. Connected to lower shaft end is lower sub provided with radial channel. Shaft has central part shaped as truncated cone. Elastic packing member is installed on the shaft so that it may slide in axial direction. Upper part of packing member is made as two collars facing upwards. Diameter of upper end of lower sub exceeds that of lower cone base.
EFFECT: increased operational reliability of the device.
FIELD: oil and gas production, particularly well interior separation for reservoir isolation one from another.
SUBSTANCE: device comprises packing members with elastic collars and reaming members, seating tool connected to lifting pipes and having lower part telescopically put on technological pipe, anchor, well screen and check valve. Each reaming member except for upper one is connected to body of each next upper packing member from below through intermediate pipe or pipes. Lower packing member body is secured to support pipes. Well screen is included in support pipe and/or one or several intermediate pipes opposite to each reservoir to be developed or treated. Check valve is located over upper well screen. Reaming member is made as thrust secured to telescoping pipe. Thrust of upper packing member has inner cavity and is connected to upper telescopic pipe by shear members so that the thrust may slide with respect to the pipe in axial direction. Thrust sliding is limited by upper annular widened section of upper telescopic pipe arranged inside thrust. Anchor is located over upper packing member thrust.
EFFECT: possibility to operate in wells having non-calibrated inner diameter, increased air-tightness of well interior separation.
2 cl, 1 dwg
FIELD: oil well drilling and operation, particularly for selective well hole flushing to prevent mud accumulation therein.
SUBSTANCE: device comprises body 1, stem 8, sealing member 2, bush 4 and delivery unit. Device also has fixed bush 5 and spring-loaded differential disengaging bush 6 installed inside fixed bush 5. Additional differential bush 9 is arranged between body 1 and stem 8 so that the bush is spring-loaded relatively the body 1. The bush 9 has slots to receive stop 11 for bush fixation and for bush 9 movement limiting. Cap is arranged in lower body 1 part. Piston 15 is installed inside stem 8 and define oil chamber along with the stem 8. Radial channels 24 are made in body 1 and in additional differential bush 9. Engaging cone 16 comprising sealing sleeves 17 is installed at upper stem 8 end. The sealing sleeves 17 restrict device installed in collet clip from displacement in radial and longitudinal directions.
EFFECT: increased reliability of device installation and removal from well, extended conditions and possibility to perform technological operations due to possibility of repeated device installation and removal from well.
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.
FIELD: oil and gas production industry, particularly pressure-testing of cased well provided with flow string.
SUBSTANCE: method involves filling well with gravity solution; lowering inflatable packer connected to hollow logging cable in well along flow string; leading inflatable packer out of flow string and sealing cable lead in flow string at well head; injecting light-weight liquid in inflatable packer via hollow logging cable up to packer expansion and setting in casing pipe under flow string, wherein light-weight liquid has density of not less than that of well liquid; continuing light-weight liquid injection in packer via logging cable along with injecting gravity solution from well head into well hole annulus; maintaining cable interior and hole annulus pressure difference at threshold inner cable pressure level predefined by technical specifications; measuring pressure in hole annulus and recording pressure change; releasing pressure from logging cable and from hole annulus along with maintaining cable interior and hole annulus pressure difference at threshold inner cable pressure level predefined by technical specifications; lifting hollow logging cable and inflatable packer from well.
EFFECT: increased efficiency.
FIELD: mining, particularly sealing or packing boreholes or wells.
SUBSTANCE: device comprises hollow body made so that body interior may be sealed. The body has head for fishing tool receiving. Anchoring unit with seat may cooperate with flow string joint in lower section of interval to be pressure-tested. Sealing unit includes sealing means and seating mechanism. Annular isolation means is formed as part of movable hollow body section. Additional seating mechanism seal is arranged from the first isolation means side. Additional seal is sleeve having L-shaped cross-section. Opened sleeve end faces elevated pressure cavity. Gland is installed from another side of annular isolation means. The gland is in contact with fixed section of hollow body arranged in anchoring unit seat. The later is installed at flow string joint. Protective case is installed on fixed hollow body section.
EFFECT: simplified structure and increased reliability.
FIELD: oil production, particularly well repair.
SUBSTANCE: device is made as packer assembly including bottom-hole packer adapted to close well annulus due to packer diameter increase under axial compression thereof and pipe arranged in bottom-hole packer cavity. During bottom-hole packer compression the packer slides along the pipe in vertical direction. Device comprises two packer assemblies. Pipe of bottom-hole packer included in upper packer assembly has bottom with orifices and thrust for bottom-hole packer supporting. Device also has outer pipe arranged below lower bottom-hole packer and coaxial thereto. Outer pipe has inner diameter and surface finish to provide sliding thereof along outer surface of pipe located inside bottom-hole packer. Outer pipe has bottom-hole packer thrusts arranged at ends thereof. Lower packer assembly is identical to upper one and is upside down. Lower packer assembly is below upper one and is coaxial thereto. Lower and upper packer assemblies define common outer pipe. Tubing string passes through both packing assemblies through central bottom orifices thereof. Remainder bottom orifices communicate well annulus and clearance between tubing string and outer pipe. Tubing string couplings located over upper packer assembly and below lower one limit vertical bottom displacement.
EFFECT: decreased time and improved well flushing.
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.
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.
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.
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.
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
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.
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.
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.
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.