Mechanical packer system
 Packer / 2245986Packer 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. |
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Packer / 2245986 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. |
 Mechanical packer system / 2246604System 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. |
 Packer testing stand / 2247222Stand 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. |
 Device for isolating inter-tubular space in the well / 2247223Device 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. |
 Device for isolation operations in wells / 2249094Device 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. |
 Two-packer device / 2249669Device 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. |
 Self-detaching bidirectional action packer with electromechanical drive / 2250351Packer 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. |
 Packer / 2251614Packer 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. |
 Packing device of additional casing column / 2254441Device 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. |
 Packing device of additional casing column / 2254442Device 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. |
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
The invention relates to the oil and gas industry, namely packer systems of the two packers to isolate sections in the casing pipe, for example, when it leaks.
Known mechanical packer, containing the barrel shaped groove, a support rigidly connected with the barrel, with locating the sealing element and cone mounted for axial movement relative to the barrel, the clip with slipcase, see Russian Federation patent No. 2148700 in class. E 21 33/12, publ. 2000
Known pokerwise device for selective testing of formations, containing upper and lower packers with hydraulic sealing elements, movable rods, provided with axial channels, placed in cavities packers, see Russian Federation patent No. 2101463 in class. E 21 In 33/124, publ. 1998
Setting packers in this device is hydraulic.
Known packer system comprising upper and lower packers, each of which has a housing, shaft, anchor, gaskets, and pipe disposed between the packers, see Russian Federation patent No. 2071545 in class. E 21 33/12, publ. 1997
This solution is taken as the prototype of the present invention.
However, it has drawbacks.
The installation of packers in the system prototype produce complex using hydraulics what their devices what complicates the installation and operational limits the possibilities.
The present invention is based on a solution designed to simplify the installation and operation of the packers and expand the operational capabilities of the system.
According to the invention this problem is solved due to the fact that the mechanical packer system comprising upper and lower packers, each of which has a housing, shaft, anchor, gaskets, and pipe disposed between the packers; on the shaft of the upper packer made a copier with locking device transport and working position of the armature and the sub with the possibility of axial movement and rotation relative to the shaft fixedly connected to the housing of the packer, with the possibility of axial movement and rotation relative to the copier, and the sub is placed on the pipe between the packers, paired with the lower packer and has no axial rotation and movement relative to their axis at an operating position of the lower packer, on the shaft of the lower packer made the copier with the possibility of axial movement with him to interact with the anchor and move it from the transport position into the working position.
Also, the packers made the reverse.
The applicant has not identified the sources containing information about technical solutions, identical to the present invention that p is adequate to conclude that it conforms to the criterion “novelty”.
Due to the implementation of the distinguishing features of the invention (in conjunction with the features indicated in the restrictive part of the formula) achieved an important new properties object.
Mechanical installation of the packer in the borehole easy operation.
The use of two different installation packers - lower, due to the axial motion of the pipe, the top, due to the translational-rotational motion of the tubes, allows for ease of installation into the borehole.
The implementation of the copier on the shaft of the upper packer and the telescopic connection of the shaft with the Cam relative to the sub, pipes between the packers and the lower working packer creates the opportunity for the installation of packers and simplifies the installation process.
Setting packers in the reverse position extends the capabilities of the system.
The applicant is not aware of any publication that would contain information about the impact of the distinctive features of invention technical result achieved. In this regard, according to the applicant, it is possible to draw a conclusion on the conformity of the proposed technical solution the criterion of “inventive step”.
The invention is illustrated by drawings, which shows
figure 1 - mechanical packer system Assembly;
figure 2 - placement of the shaft with the Cam relative to the sub /site A/;
figure 3 - the geometrical what Kai shape of the groove for the locking device of the copier.
Mechanical packer system contains:
The lower packer 1.
The upper packer 2.
Tube (between the packers 1 and 2) 3.
Sub 4.
Column tubing 5.
Leaking section of the casing 6.
The lower packer 1 includes:
Case 7.
Shaft 8.
Copier (shaft 8) 9.
The anchor 10.
The seals 11.
The upper packer 2 includes:
The housing 12.
The shaft 13,
- copier (on the shaft 13) 14,
- locking device (copier) 14) 15,
- transport position (device 15) 16,
- working position (device 15) 17.
The anchor 18.
The seals 19.
Mechanical packer system consists of a bottom 1 and top 2 packers. Packers 1 and 2 isolate the leaking section of the casing 6. Between the packers 1 and 2 are placed one or more of the tubes 3. Packers 1 and 2 down on the column tubing 5.
The lower packer 1 includes a housing 7, shaft 8, the anchor 10 and the seals 11. On the shaft 8 is made copier 9 with the possibility of axial movement with him to interact with the anchor 10 and its movement from the transport position into the working position.
The upper packer 2 includes a housing 12, shaft 13, the anchor 18 and the seal 19. On the shaft 13 has a sub 4 with the possibility of axial movement and rotation on it. Sub 4 is rigidly connected to the housing 12. On the shaft 13 is installed, the copier 14 without rotation and translation. The shaft 13 has the ability to move and rotate along the axis of housing 12. The Cam 14 is in the form of a sleeve and contains the locking element 15 in the form of a finger which moves in a sleeve, captures transport 16 or 17 working position of the armature 18.
The installation of the packer system is as follows.
The descent starts from the bottom of the packer 1. The lower packer 1 is lowered into the well to a certain depth, then it sbencivu with one or more tubes 3 and continue the descent even at some depth. Pipe 3 sbencivu with the upper packer 2. The system continues to pull on two meters below the leak. Leaking area on the casing tube 6 should be between the upper 2 and lower 1 packers. Lift system for two and a half meters. The master Cam 9 mounted on the shaft 8, has the possibility of axial movement with the shaft 8 and interaction with the fingers of the anchor 10, switching it into position. Again lower packer 1 down when the anchor 10 is braked in case 7, rasklinivanie packer 1 and seals with seals 11. Conducted an axial stop of the lower packer 1. After setting of the packer 1 sub 4, coupled with the tubes 3 and the upper packer 2, will be fixed.
To set the upper packer 2 column tubing 5 turn right (clockwise) a few times and continue the descent. The shaft 13 together with made it by the copier 14, has the possibility of translational-rotational motion, the shaft 13 is connected to the transmission 4, which has no possibility of such a move. The telescopic connection of the copier 14 sub 4 allows you to make an axial movement of the shaft 13 in order to use the geometry of the groove of the fixing device 15 for planting packer 2, since the transmission 4 is in a stationary position on the pipe 3 and the lower packer 1. Then the shaft 13 to move down the sub 4 and the fixing device 15 from the transport position 16 to move in the work 17. The shaft 13 will move the body of the anchor 18 down with sub 4. The anchor 18 will occupy a working position, the seal 19 will hold the body of the armature 18 in a stationary position. The upper packer 2 planted.
Spend the raising of the column tubing 5 upwards.
Packers 1 and 2 remain in the well, the lower packer 1 is a support for the upper 2, and through pipe 3 is oil or gas.
The proposed packer system manufactured at the plant “Esmeron, and testing of an experimental batch will be held in Tyumen Oil Company (Orenburg Oil), and this causes, in the opinion of the applicant, his criterion of “industrial applicability”.
Proposed mechanical packer system allows you to:
to simplify the installation of the system through the use of mechanically set imaamah packers;
to simplify the installation of the system through the use of two different installation of packers;
to create an opportunity for the installation of packers and simplify the installation process due to the telescopic connection of the shaft with the Cam relative to the sub, pipes between the packers and the lower working packer;
to extend the operational capabilities of the system due to the installation of packers in the reverse position.
Mechanical packer system comprising upper and lower packers, each of which has a housing, shaft, anchor, gaskets, and pipe disposed between the packers, characterized in that on the shaft of the upper packer made a copier with locking device transport and working position of the armature and the sub with the possibility of axial movement and rotation relative to the shaft fixedly connected to the housing of the packer, with the possibility of axial movement and rotation relative to the copier, and the sub is placed on the pipe between the packers, paired with the lower packer and has no axial rotation and movement about their axes in operating position, the lower packer, and on the shaft of the lower packer made the copier with the possibility of axial movement with him to interact with the anchor and move it from the transport position into the working position.