CN114482910B - Packer packing element and packer - Google Patents
Packer packing element and packer Download PDFInfo
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- CN114482910B CN114482910B CN202210397802.5A CN202210397802A CN114482910B CN 114482910 B CN114482910 B CN 114482910B CN 202210397802 A CN202210397802 A CN 202210397802A CN 114482910 B CN114482910 B CN 114482910B
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- packer
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- fixedly connected
- annular
- cylinder
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- 238000012856 packing Methods 0.000 title description 30
- 229920001971 elastomer Polymers 0.000 claims abstract description 114
- 230000007246 mechanism Effects 0.000 claims abstract description 19
- 230000000712 assembly Effects 0.000 claims description 8
- 238000000429 assembly Methods 0.000 claims description 8
- 229920000459 Nitrile rubber Polymers 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 5
- NTXGQCSETZTARF-UHFFFAOYSA-N buta-1,3-diene;prop-2-enenitrile Chemical compound C=CC=C.C=CC#N NTXGQCSETZTARF-UHFFFAOYSA-N 0.000 claims 1
- 238000007789 sealing Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 7
- 238000000605 extraction Methods 0.000 description 10
- 238000012360 testing method Methods 0.000 description 7
- 238000011084 recovery Methods 0.000 description 6
- 239000003292 glue Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 230000001737 promoting effect Effects 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007480 spreading Effects 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/127—Packers; Plugs with inflatable sleeve
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/1208—Packers; Plugs characterised by the construction of the sealing or packing means
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/126—Packers; Plugs with fluid-pressure-operated elastic cup or skirt
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/129—Packers; Plugs with mechanical slips for hooking into the casing
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention discloses a packer rubber sleeve and a packer, and belongs to the field of packers. A packer rubber sleeve and a packer comprise a first central pipe, wherein an annular sliding groove is formed in the first central pipe, a sliding cylinder is connected in the annular sliding groove in a sliding mode, a first hydraulic cylinder is fixedly connected between one side of the sliding cylinder and one side of the annular sliding groove, and the other side of the sliding cylinder is fixedly connected with a second central pipe; according to the device, the first central pipe, the second central pipe, the connecting rod and the arc-shaped push plate are arranged, so that the rubber cylinder stability of the device is better, the supporting force is provided for the inner side of the rubber cylinder, the sealing effect of the rubber cylinder is greatly improved, the device is worthy of popularization, the connection efficiency between the pipe column and the joint is higher, the slip mechanism is not easy to block, the setting and unsetting efficiency is higher, and the sealing performance between the pipe column and the joint is better.
Description
Technical Field
The invention relates to the technical field of packers, in particular to a packer rubber cylinder and a packer.
Background
Along with the deepening of exploration and development work of the petroleum industry, oil companies shift to oil and gas exploration in severe environments, namely, the well depth is increased more and more, the underground situation is more and more complex, as is known, deep wells and ultra-deep wells generally have the characteristics of large formation pressure, high formation temperature and the like, the challenge to oil testing is great, and a testing packer is one of key tools for oil testing and testing operation and plays a role in sealing and isolating the annular space of an oil sleeve and ensuring the safety of a shaft; after the test, the test packer still need play ground smoothly, for follow-up operation the space of coming out, the packing element of test packer is its core, in the face of the high temperature high pressure characteristic in the pit, the sealing performance of packer packing element not only is relevant with rubber materials, still relevant with the structure of packer packing element, need design packer packing element structure, ingenious packing element utilizes structural mechanical properties, realize better after the packing element warp and form sealedly with the contact of oil recovery passageway wall, guarantee packing element overall structure's firm simultaneously, avoid the packing element to crowd badly, tear etc..
But current packer all extrudees the packing element through compression from top to bottom basically, makes the packing element receive the effect of external force down to produce deformation to outwards expand at the horizontal direction, realize packing's effect, it is not enough to lead to packing element expansion strength easily to singly lean on upper and lower extrusion force, and the packing element inner circle receives the compressive force, in order to produce deformation, finally can make the unstable or the relatively poor problem of leakproofness of setting.
Disclosure of Invention
The invention aims to solve the problems of instability or poor sealing performance of a rubber sleeve in the prior art, and provides a packer rubber sleeve and a packer.
In order to achieve the purpose, the invention adopts the following technical scheme:
a packer rubber cylinder and a packer comprise a first center pipe, wherein an annular sliding groove is formed in the first center pipe, a sliding cylinder is connected in the annular sliding groove in a sliding manner, a first hydraulic cylinder is fixedly connected between one side of the sliding cylinder and one side of the annular sliding groove, a second center pipe is fixedly connected to the other side of the sliding cylinder, a first shell is fixedly sleeved on the surface of the first center pipe and the surface of the sliding cylinder, a rubber cylinder is fixedly connected between two adjacent sides of the first shell, a propping assembly is fixedly connected to the sliding cylinder and comprises a guide block, the guide block is fixedly installed on the surface of the sliding cylinder, a sliding block is connected in the sliding manner inside the guide block, the surface of the sliding block is rotatably connected with two connecting rods, one end of each connecting rod is rotatably connected with the surface of the first center pipe and the surface of the second center pipe respectively, one side fixedly connected with arc push pedal of sliding block, the quantity that struts the subassembly is the multiunit, and the multiunit struts the subassembly and is equidistant setting at the surface of sliding barrel.
In order to realize clamping, preferably, the first central tube is internally and threadedly connected with a joint, one side of the joint is provided with a clamping assembly, the clamping assembly comprises a mounting hole, the inside of the mounting hole is slidably connected with a clamping block, an elastic element is connected between one side of the clamping block and one side of the inner wall of the mounting hole, and the clamping assemblies are in multiple groups.
In order to realize increasing the efficiency of deblocking and setting, preferably, the top that connects begins to be equipped with annular jack, annular jack's inside sliding connection has the tubular column, the inside slip of tubular column has cup jointed the movable pipe, and the tubular column inner wall has seted up the annular card and has held the groove, the bottom surface fixedly connected with fixed plate in groove is held to the annular card, and the inside sliding connection in groove has the fly leaf is held to the annular card, one side fixed connection of fly leaf the inner wall of movable pipe.
In order to achieve the purpose of increasing the sealing performance, preferably, an annular cavity is formed in the surface of the joint, an annular rubber sheet is fixedly connected to the inner wall of the annular cavity, and the inside of the annular cavity is communicated with the inside of the mounting hole through a communication hole.
In order to realize limiting, preferably, a guide groove is formed in the inner wall of the mounting hole, a sliding pin is slidably connected to the inside of the guide groove, and one end of the sliding pin is fixedly connected with one side of the clamping block.
In order to achieve complete functions, preferably, the outer wall of the second central pipe is connected with a conical block in a sliding mode, the top surface of the conical block is fixedly connected with the bottom surface of the second central pipe through a second hydraulic cylinder, and a slip mechanism is arranged at the bottom of the surface of the second central pipe.
In order to realize preventing soil particle jam, preferably, the bottom of toper piece is rotated and is connected with the dwang, the top fixedly connected with helical gear of dwang, and the bottom fixedly connected with brush hair of dwang, helical gear with the surface engagement of second center tube, the brush hair with slips mechanism touches.
In order to achieve normal function, preferably, one side of the clamping block is provided with a chamfer.
A packer rubber cylinder comprises a packer and a rubber cylinder, wherein the rubber cylinder comprises an upper rubber cylinder, a middle rubber cylinder and a lower rubber cylinder, and the upper rubber cylinder, the middle rubber cylinder and the lower rubber cylinder are sequentially and fixedly connected from top to bottom; the rubber cylinder is made of nitrile rubber.
In order to achieve complete functions, preferably, the inner diameter and the outer diameter of the upper rubber cylinder, the middle rubber cylinder and the lower rubber cylinder are the same.
Compared with the prior art, the invention provides a packer rubber cylinder and a packer, which have the following beneficial effects:
1. this packer packing element and packer through setting up first center tube, second center tube, connecting rod and arc push pedal isotructure subassembly for the conventional art, packing element stability is better, through providing the holding power for the packing element inboard, thereby greatly increased the expansion intensity and the sealed effect of packing element, be worth promoting.
2. This packer packing element and packer is through setting up card retaining block, activity pipe and fly leaf isotructure subassembly for prior art, this device is faster for the efficiency of being connected between tubular column and the joint, thereby has indirectly increased the efficiency of setting and deblocking, and the leakproofness between tubular column and the joint is better.
3. This packer packing element and packer through dwang, helical gear and brush hair isotructure subassembly to the brush hair is hung the brush to slips mechanism when realizing the deblocking, prevents that the soil bits in the oil recovery passageway from dropping slips mechanism on, influences slips mechanism and accomodates, thereby makes things convenient for the follow-up device whole to take out, efficiency when improving the recovery.
The device has the advantages that the structure is simple, the manufacturing cost is low, the device is suitable for mass production, the popularization is worthy, the rubber cylinder stability is better, the sealing performance is high, the service life is long, the connection efficiency between the pipe column and the joint is faster, gravel on the slip mechanism can be swept off in advance during deblocking, the use is convenient, and the popularization is worthy.
Drawings
FIG. 1 is a schematic structural view of a packer rubber cylinder and a partial sectional view of a packer in a front view according to the present invention;
FIG. 2 is a schematic diagram of a packer rubber cylinder and a partially enlarged structure at the position A in FIG. 1 of the packer according to the present invention;
FIG. 3 is a schematic view of the inner structure of a first central tube of a packer rubber sleeve and a packer provided by the invention;
FIG. 4 is a schematic view of a packer rubber cylinder and a connection relationship structure between a guide block and a sliding block of the packer;
fig. 5 is a schematic diagram of the packer rubber cylinder and the internal structure of the packer rubber cylinder provided by the invention.
In the figure: 1. a first center tube; 101. an annular sliding groove; 2. a sliding cylinder; 3. a first hydraulic cylinder; 4. a second center tube; 5. a first housing; 6. a rubber cylinder; 601. gluing a rubber cylinder; 602. a middle rubber cylinder; 603. a rubber cylinder is arranged; 7. a connecting rod; 8. a guide block; 9. a slider; 10. an arc-shaped push plate; 11. a conical block; 12. a second hydraulic cylinder; 13. rotating the rod; 14. a helical gear; 15. brushing; 16. a slip mechanism; 17. a joint; 18. mounting holes; 19. clamping the block; 20. an elastic element; 21. an annular receptacle; 22. a pipe string; 23. a movable tube; 24. an annular retaining groove; 25. a fixing plate; 26. a movable plate; 27. an annular cavity; 28. an annular rubber skin; 29. a communicating hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Example 1:
referring to fig. 1-4, a packer rubber cylinder and a packer comprise a first central tube 1, wherein an annular sliding groove 101 is formed in the first central tube 1, a sliding cylinder 2 is slidably connected in the annular sliding groove 101, a first hydraulic cylinder 3 is fixedly connected between one side of the sliding cylinder 2 and one side of the annular sliding groove 101, a second central tube 4 is fixedly connected to the other side of the sliding cylinder 2, a first shell 5 is fixedly sleeved on the surface of the first central tube 1 and the surface of the sliding cylinder 2, a rubber cylinder 6 is fixedly connected between the adjacent sides of the two first shells 5, a spreading assembly is fixedly connected to the sliding cylinder 2, the spreading assembly comprises a guide block 8, the guide block 8 is fixedly installed on the surface of the sliding cylinder 2, a sliding block 9 is slidably connected in the guide block 8, a sliding rod is arranged on the guide block 8, and the sliding block 9 is positioned on the sliding rod, as shown in fig. 4, the function of the sliding rod is limited to prevent the sliding block 9 of the guide block 8 from falling off, the surface of the sliding block 9 is rotatably connected with two connecting rods 7, one end of each connecting rod 7 is rotatably connected with the surface of the first central tube 1 and the surface of the second central tube 4 respectively, one side of the sliding block 9 is fixedly connected with an arc push plate 10, the number of the strutting assemblies is multiple, the multiple strutting assemblies are arranged on the surface of the sliding cylinder 2 at equal intervals, the first central tube 1 and the second central tube 4 are drawn back by controlling the first hydraulic cylinder 3, the two first shells 5 are drawn close to the middle at the same time, so as to extrude the rubber cylinder 6 between the two strutting assemblies, and meanwhile, one ends of the two connecting rods 7 on the first central tube 1 and the second central tube 4 are drawn close to the middle, the end of the connecting rod 7 on the sliding block 9 is in an outward expansion mode, and the sliding block 9 is pushed to move outwards, finally make arc push pedal 10 outwards extrude packing element 6, increase packing element 6's expansion ability makes things convenient for packing element 6 to touch with the inner wall of oil recovery passageway mutually, realizes the setting, and for the conventional art, 6 stability of packing element in this device are better, through providing the holding power for 6 inboards of packing element to greatly increased packing element 6's sealed effect, be worth promoting.
Specifically, the first central tube 1 is internally and threadedly connected with a joint 17, one side of the joint 17 is provided with a clamping assembly, the clamping assembly comprises a mounting hole 18, the mounting hole 18 is internally and slidably connected with a clamping block 19, an elastic element 20 is connected between one side of the clamping block 19 and one side of the inner wall of the mounting hole 18, the clamping assemblies are in multiple groups, so that the clamping of the tubular column 22 and the joint 17 is facilitated, the device can be conveniently lowered to a preset position for setting and unsetting by using the tubular column 22, the tubular column 22 is inserted into the annular jack 21 during use, the clamping block 19 is clamped into the annular clamping groove 24 under the elastic force of the elastic element 20, as shown in fig. 2, the clamping block 19 retracts a distance towards the inside of the mounting hole 18, the space inside the mounting hole 18 is reduced, and gas is injected into the annular cavity 27 through the communication hole 29, make annular rubber 28 inflation, in order to make annular rubber 28 can expand and swell smoothly, can fill into liquid replacement gas in mounting hole 18 to closely touch with the inner wall of tubular column 22, for prior art, the efficiency of being connected between tubular column 22 and the joint 17 is faster, thereby has increased the efficiency of setting and deblocking indirectly, and the leakproofness between tubular column 22 and the joint 17 is better.
Specifically, the top of the joint 17 is initially provided with an annular insertion hole 21, the inside of the annular insertion hole 21 is slidably connected with a tubular column 22, the inside of the tubular column 22 is slidably sleeved with a movable tube 23, the inner wall of the tubular column 22 is provided with an annular clamping groove 24, the bottom surface of the annular clamping groove 24 is fixedly connected with a fixed plate 25, the inside of the annular clamping groove 24 is slidably connected with a movable plate 26, one side of the movable plate 26 is fixedly connected with the inner wall of the movable tube 23, when the tubular column 22 needs to be taken out, the movable tube 23 only needs to be shifted downwards, so that the movable plate 26 extrudes the clamping block 19 to enable the clamping block to be completely retracted into the inside of the mounting hole 18, and then the tubular column 22 is pulled out.
Specifically, the surface of the joint 17 is provided with an annular cavity 27, the inner wall of the annular cavity 27 is fixedly connected with an annular rubber sheet 28, and the interior of the annular cavity 27 communicates with the interior of the mounting hole 18 through the communication hole 29, the stem 22 is inserted into the interior of the annular insertion hole 21, at which time the retaining block 19 is retained in the interior of the annular retaining groove 24 by the elastic force of the elastic member 20, as shown in fig. 2, when the holding block 19 is retracted a distance toward the inside of the mounting hole 18, the space inside the mounting hole 18 becomes smaller, so that gas is injected into the interior of the annular cavity 27 through the communication holes 29, so that the annular rubber sheet 28 is expanded, and closely contact with the inner wall of tubular column 22, compared with the conventional art, greatly increased the sealing line between tubular column 22 and joint 17, compared with the prior art, this device easy operation, work efficiency is high, and the cost of manufacture is cheap, is fit for the volume production.
Specifically, the inner wall of the mounting hole 18 is provided with a guide groove, the inside of the guide groove is slidably connected with a sliding pin, one end of the sliding pin is fixedly connected with one side of the clamping block 19, the guide groove and the sliding pin are limited to limit the clamping block 19, and the clamping block 19 is prevented from falling off under the action of the elastic force of the elastic element 20.
Specifically, the outer wall of the second central tube 4 is slidably connected with a conical block 11, the top surface of the conical block 11 is fixedly connected with the bottom surface of the second central tube 4 through a second hydraulic cylinder 12, a slip mechanism 16 is arranged at the bottom of the surface of the second central tube 4, the second hydraulic cylinder 12 is controlled to push the conical block 11 to move downwards, so that the slip mechanism 16 is squeezed to open and clamped inside the oil production channel, and the slip mechanism 16 is not described in the prior art.
Specifically, the bottom of the conical block 11 is rotatably connected with a rotating rod 13, the top end of the rotating rod 13 is fixedly connected with a helical gear 14, and the bottom end of the rotating rod 13 is fixedly connected with brush bristles 15, the bevel gear 14 is engaged with the surface of the second central tube 4, the brush bristles 15 are contacted with the slip mechanism 16, the rotating rod 13 is driven to move up and down when the conical block 11 moves up and down, so that the second central tube 4 is displaced relative to the helical gears 14, while the second central tube 4 engages the bristles 15, while the second central tube 4 is relatively non-rotatable, so that the bevel gear 14 rotates, when set, the conical block 11 moves downwards and the brush 15 contacts with the slip mechanism 16, and when set, the conical block 11 moves upwards and the bevel gear 14 rotates, thereby drive brush hair 15 to hanging the brush, prevent that the soil bits in the oil recovery passageway from dropping on slips mechanism 16, influence slips mechanism 16 and accomodate.
Specifically, one side of the clamping block 19 is provided with a chamfer, so that the clamping block 19 can be conveniently extruded.
In the invention, when setting, the first central tube 1 is lowered to a set position in the oil extraction channel by the pipe column 22, the second hydraulic cylinder 12 is controlled to push the conical block 11 to move downwards, so that the slip mechanism 16 is extruded to be clamped in the oil extraction channel, the slip mechanism 16 is the prior art, which is not described much, the first hydraulic cylinder 3 is controlled to retract, so that the first central tube 1 and the second central tube 4 are drawn close to each other, meanwhile, the two first shells 5 are drawn close to the middle, so that the rubber cylinder 6 between the two shells is extruded, meanwhile, one ends of the two connecting rods 7 on the first central tube 1 and the second central tube 4 are drawn close to the middle, so that one ends of the connecting rods 7 on the sliding blocks 9 are in an outward expansion type, the sliding blocks 9 are pushed to move outwards, finally, the arc-shaped push plate 10 is pushed to extrude the rubber cylinder 6 outwards, and the expansion capability of the rubber cylinder 6 is increased, make things convenient for packing element 6 to touch with the inner wall of oil recovery passageway, realize the setting, for traditional technology, 6 stability of packing element in this device are better, through providing the holding power for 6 inboards of packing element to greatly increased 6 sealed effects of packing element, be worth promoting.
Example 2:
referring to fig. 5, a packer rubber cylinder comprises a packer and also comprises a rubber cylinder 6, wherein the rubber cylinder 6 comprises an upper rubber cylinder 601, a middle rubber cylinder 602 and a lower rubber cylinder 603, and the upper rubber cylinder 601, the middle rubber cylinder 602 and the lower rubber cylinder 603 are fixedly connected in sequence from top to bottom; the rubber cylinder 6 is made of nitrile rubber, has good high temperature and high pressure resistance, when in use, under the working condition of high temperature and high pressure of the oil extraction channel, the two first shells 5 are close to the middle, the arc push plate 10 props against the inner wall of the middle rubber cylinder 602 to extrude outwards, the middle rubber cylinder 602 is soft and has good flexibility, when the arc push plate 10 props against the middle rubber cylinder 602, glue inside the middle rubber cylinder 602 flows towards two ends, so that the middle part of the middle rubber cylinder 602 protrudes to cling to the oil extraction channel, simultaneously, under the action of the pressure of the arc push plate 10, due to the characteristics of rubber, the middle rubber cylinder 602 expands outwards and simultaneously drives the lower edge of the upper rubber cylinder 601 to expand outwards to be in a stretching shape, the inner space at the lower half part of the upper rubber cylinder 601 is compressed, so that the glue inside the upper rubber cylinder 601 flows towards the upper end, the space at the top part of the same lower rubber cylinder 603 is internally made to flow towards the lower end, and further the gradual expansion of the upper rubber cylinder 601 and the lower rubber cylinder 603 is realized, thereby the rubber cylinder is tightly attached to the oil extraction channel, the whole rubber cylinder 6 is tightly attached to the oil extraction channel, and the sealing is better.
Specifically, the inner diameter and the outer diameter of the upper rubber cylinder 601, the middle rubber cylinder 602 and the lower rubber cylinder 603 are the same, and the upper rubber cylinder 601, the middle rubber cylinder 602 and the lower rubber cylinder 603 are all made of nitrile rubber synthetic materials, so that the high-temperature and high-pressure resistant performance is good.
In the invention, under the working condition of high temperature and high pressure of the oil extraction channel, when in use, the two first shells 5 are close to the middle, the arc push plate 10 is pressed against the inner wall of the middle rubber cylinder 602 to extrude outwards, the middle rubber cylinder 602 is soft and has good flexibility, when the arc push plate 10 is pressed against the middle rubber cylinder 602, the glue in the middle rubber cylinder 602 flows towards the two ends, so that the middle part of the middle rubber cylinder 602 is firstly protruded to be tightly attached to the oil extraction channel, and simultaneously, under the action of the pressure of the arc push plate 10, the middle rubber cylinder 602 expands outwards and simultaneously drives the lower edge of the upper rubber cylinder 601 to expand outwards to be in a tensile shape due to the characteristic of the rubber, the inner space of the lower half part of the upper rubber cylinder 601 is compressed, so that the glue in the upper rubber cylinder 601 flows towards the upper end, the same glue in the lower rubber cylinder 603 flows towards the lower end, so that the upper rubber cylinder 601 and the lower rubber 603 expand gradually, so that the upper rubber cylinder 601 and the lower rubber 603 are tightly attached to the oil extraction channel, and the whole rubber 6 is tightly attached to the oil extraction channel, the sealing is better, and the rubber cylinder 6 of the device is made of synthetic nitrile rubber, is high-temperature and high-pressure resistant, can meet the severe working environment, and is worth popularizing.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. The packer is characterized by comprising a first center pipe (1), wherein an annular sliding groove (101) is formed in the first center pipe (1), a sliding cylinder (2) is slidably connected into the annular sliding groove (101), a first hydraulic cylinder (3) is fixedly connected between one side of the sliding cylinder (2) and one side of the annular sliding groove (101), a second center pipe (4) is fixedly connected onto the other side of the sliding cylinder (2), a first shell (5) is fixedly sleeved on the surface of the first center pipe (1) and the surface of the sliding cylinder (2), a rubber cylinder (6) is fixedly connected between two adjacent sides of the first shells (5), a propping assembly is fixedly connected with the sliding cylinder (2) and comprises a guide block (8), the guide block (8) is fixedly installed on the surface of the sliding cylinder (2), sliding blocks (9) are slidably connected inside the guide blocks (8), two connecting rods (7) are rotatably connected to the surfaces of the sliding blocks (9), one ends of the two connecting rods (7) are respectively rotatably connected to the surface of the first central tube (1) and the surface of the second central tube (4), an arc-shaped push plate (10) is fixedly connected to one side of each sliding block (9), the number of the expansion assemblies is multiple, and the multiple expansion assemblies are arranged on the surface of the sliding cylinder (2) at equal intervals;
the connector (17) is in threaded connection with the inside of the first central pipe (1), a clamping assembly is arranged on one side of the connector (17) and comprises a mounting hole (18), a clamping block (19) is in sliding connection with the inside of the mounting hole (18), an elastic element (20) is connected between one side of the clamping block (19) and one side of the inner wall of the mounting hole (18), and the clamping assemblies are in multiple groups;
the top that connects (17) begins to be equipped with annular jack (21), the inside sliding connection of annular jack (21) has tubular column (22), the inside slip of tubular column (22) has cup jointed movable pipe (23), and tubular column (22) inner wall has seted up the annular and has held groove (24), the annular is held the bottom surface fixedly connected with fixed plate (25) of groove (24), and the annular is held the inside sliding connection in groove (24) and is had fly leaf (26), one side fixed connection of fly leaf (26) the inner wall of movable pipe (23).
2. A packer as claimed in claim 1, characterized in that an annular cavity (27) is formed in the surface of the joint (17), an annular rubber sheet (28) is fixedly connected to the inner wall of the annular cavity (27), and the inside of the annular cavity (27) is communicated with the inside of the mounting hole (18) through a communication hole (29).
3. A packer as claimed in claim 1, wherein the inner wall of the mounting hole (18) is provided with a guide groove, and a sliding pin is slidably connected inside the guide groove, and one end of the sliding pin is fixedly connected with one side of the clamping block (19).
4. A packer as claimed in claim 1, characterized in that a conical block (11) is slidably connected to the outer wall of the second central pipe (4), the top surface of the conical block (11) is fixedly connected to the bottom surface of the second central pipe (4) by a second hydraulic cylinder (12), and a slip mechanism (16) is provided at the bottom of the surface of the second central pipe (4).
5. A packer according to claim 4, characterised in that the bottom of the conical block (11) is rotatably connected with a rotating rod (13), the top end of the rotating rod (13) is fixedly connected with a helical gear (14), and the bottom end of the rotating rod (13) is fixedly connected with bristles (15), the helical gear (14) is engaged with the surface of the second central tube (4), and the bristles (15) are in contact with the slip mechanism (16).
6. A packer as claimed in claim 1, characterised in that one side of the block (19) is chamfered.
7. A packer rubber sleeve, comprising the packer as claimed in claim 1, and further comprising a rubber sleeve (6), wherein the rubber sleeve (6) comprises an upper rubber sleeve (601), a middle rubber sleeve (602) and a lower rubber sleeve (603), and the upper rubber sleeve (601), the middle rubber sleeve (602) and the lower rubber sleeve (603) are fixedly connected in sequence from top to bottom; the rubber cylinder (6) is made of butadiene-acrylonitrile rubber.
8. The packer rubber of claim 7, wherein the inner and outer diameters of the upper rubber sleeve (601), the middle rubber sleeve (602) and the lower rubber sleeve (603) are the same.
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| CN202210397802.5A CN114482910B (en) | 2022-04-16 | 2022-04-16 | Packer packing element and packer |
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| CN202210397802.5A CN114482910B (en) | 2022-04-16 | 2022-04-16 | Packer packing element and packer |
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| CN114482910B true CN114482910B (en) | 2022-07-15 |
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| CN117803348A (en) * | 2022-09-30 | 2024-04-02 | 中国石油天然气集团有限公司 | While-drilling packing device and reverse circulation drilling equipment |
| CN116335580B (en) * | 2023-05-29 | 2023-07-21 | 东营市源鑫石油科技有限公司 | External casing packer with bidirectional extrusion sealing function |
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| RU64681U1 (en) * | 2007-02-28 | 2007-07-10 | Открытое акционерное общество "Татнефть" им. В.Д. Шашина | PACKER |
| CN105201445A (en) * | 2014-06-26 | 2015-12-30 | 中国石油化工股份有限公司 | Rubber sleeve for packer and packer |
| CN105804689A (en) * | 2016-04-20 | 2016-07-27 | 西南石油大学 | Packer |
| CN106639963A (en) * | 2016-12-28 | 2017-05-10 | 中国石油集团渤海钻探工程有限公司 | Degradable packer, multi-stage layering fracturing pipe column and fracturing construction method thereof |
| CN110952961A (en) * | 2019-12-13 | 2020-04-03 | 孙肖 | Use method of petroleum deformation cased well layered oil production device |
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- 2022-04-16 CN CN202210397802.5A patent/CN114482910B/en active Active
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|---|---|---|---|---|
| RU64681U1 (en) * | 2007-02-28 | 2007-07-10 | Открытое акционерное общество "Татнефть" им. В.Д. Шашина | PACKER |
| CN105201445A (en) * | 2014-06-26 | 2015-12-30 | 中国石油化工股份有限公司 | Rubber sleeve for packer and packer |
| CN105804689A (en) * | 2016-04-20 | 2016-07-27 | 西南石油大学 | Packer |
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