CN115142807A - Throttle easy to throw and drag - Google Patents
Throttle easy to throw and drag Download PDFInfo
- Publication number
- CN115142807A CN115142807A CN202210807320.2A CN202210807320A CN115142807A CN 115142807 A CN115142807 A CN 115142807A CN 202210807320 A CN202210807320 A CN 202210807320A CN 115142807 A CN115142807 A CN 115142807A
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- ring
- piston
- slip
- fishing
- sealing
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- 238000007789 sealing Methods 0.000 claims abstract description 73
- 238000003825 pressing Methods 0.000 claims abstract description 18
- 239000004576 sand Substances 0.000 claims abstract description 15
- 230000002265 prevention Effects 0.000 claims abstract description 4
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 238000012856 packing Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 abstract description 15
- 239000010959 steel Substances 0.000 abstract description 15
- 230000000903 blocking effect Effects 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 7
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 210000000078 claw Anatomy 0.000 description 3
- 239000003345 natural gas Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Images
Classifications
-
- 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
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
- E21B23/01—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for anchoring the tools or the like
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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
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/10—Slips; Spiders ; Catching devices
-
- 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
- E21B31/00—Fishing for or freeing objects in boreholes or wells
- E21B31/12—Grappling tools, e.g. tongs or grabs
-
- 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
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
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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)
- Marine Sciences & Fisheries (AREA)
- Mechanical Engineering (AREA)
- Actuator (AREA)
Abstract
The invention discloses an easy-to-throw-drag flow controller, which comprises a fishing head, a fishing connecting rod, a connecting ring, a pressing ring, a pressure spring, a throwing locking block, an upper slip seat, a slip, a lower slip seat, a slip inner pipe, a supporting pipe, a sealing ring, a seat locking block, an outer cylinder, an inner connecting pipe, an upper pressing ring, an upper rubber cylinder, an upper inner pipe, an upper push ring, a lower pressing ring, a lower rubber cylinder, a lower inner pipe, a lower push ring, a piston, a push-assisting ring, an opening locking ring, a top ring, a locking resolution, a piston outer cylinder, a piston inner pipe, an air nozzle retaining ring and a sand prevention cover. The choke holder is convenient to install and operate in a well, and the device can be installed in the well by controlling the lowering speed of a downhole steel wire on the ground; the sealing is reliable, and the rubber sleeve can be compressed and expanded to seal the oil pipe by utilizing the pressure difference. The accident of blocking in the shaft can be avoided. The fishing tool is convenient to take out, and fishing is not influenced even if the piston is corroded or clamped, so that fishing accidents can be avoided. It is suitable for producing gas in deep well, high pressure gas well or inclined well.
Description
Technical Field
The invention belongs to the technical field of oil field natural gas exploitation tools, and particularly relates to an easily-dropping-dragging throttling device.
Background
In the process of natural gas exploitation and production, an air nozzle needs to be installed underground, the problem that freezing and blocking occur due to throttling and cooling of the air nozzle is solved by utilizing terrestrial heat, the gas production rate of a gas well is controlled by utilizing throttling, and the purpose of stable production is achieved.
At present, the throttle installed underground sometimes has the phenomenon of untight sealing of a rubber sleeve, so that throttling failure is caused, and the throttle needs to be salvaged out for replacement. However, the situation that the choke is not dragged can occur during fishing due to the fact that the choke is not dragged in the well, and the choke can not be smoothly fished out of the well, even the situation that a fishing head or a slip tooth of the choke is broken during fishing shock and a fishing steel wire is broken sometimes can occur, so that accidents are caused, more complex construction measures must be adopted for processing, more manpower and material resources are consumed, and gas well production is influenced.
Disclosure of Invention
The invention aims to provide an easy-to-fish throttleer which can be conveniently installed and fished in a well and has strong sealing property.
The invention adopts the technical scheme that the throttle easy to throw and drag comprises a fishing head, a fishing connecting rod, a connecting ring, a pressing ring, a pressure spring, a throwing locking block, an upper slip seat, a slip, a lower slip seat, a slip inner tube, a supporting tube, a sealing ring, a seat sealing locking block, an outer tube, an inner connecting tube, an upper pressing ring, an upper rubber tube, an upper inner tube, an upper push ring, a lower pressing ring, a lower rubber tube, a lower inner tube, a lower push ring, a piston, a push-assisting ring, an opening locking ring, a top ring, a locking resolution, a piston outer tube, a piston inner tube, an air nozzle retaining ring and a sand prevention cover; the fishing head is in threaded connection with the upper end of a fishing connecting rod, the connecting ring is sleeved on the fishing connecting rod, the lower end of the connecting ring is connected with the upper end of a slip inner pipe through internal threads, the outer circular surface of the lower end of the connecting ring is inserted into an inner hole in the upper part of an upper slip seat, the upper end of the slip is installed on the upper slip seat, the lower end of the slip is installed in a lower slip seat, the lower end of the fishing connecting rod is inserted into an upper hole of a sealing ring, and the lower part of the sealing ring is in threaded connection with the upper end of the inner connecting pipe; the upper push ring and the upper rubber barrel are sequentially sleeved on the upper inner pipe, the upper press ring and the upper inner pipe are sequentially sleeved on the upper part of the inner connecting pipe, the lower push ring and the lower rubber barrel are sequentially sleeved on the lower inner pipe, the lower press ring and the lower inner pipe are sequentially sleeved on the lower part of the inner connecting pipe, and the upper end of the piston is installed at the lower end of the inner connecting pipe through threads.
The present invention is also characterized in that,
the upper end of the connecting ring is fixed on the fishing connecting rod through a shear pin, the outer circle of the connecting ring is sleeved with a pressure spring, the upper end of the pressure spring is pressed by a pressure ring, and the pressure ring is connected to the upper end of the connecting ring through threads.
Teeth are arranged on the outer circular surface of the slip, a radial inclined plane groove is arranged at the upper end of the slip, an axial inclined plane is arranged in the lower end of the slip, and bosses are arranged on two sides of the inclined plane; the upper slip seat and the lower slip seat are both cylindrical bodies, the lower end of the upper slip seat is provided with a radial inclined groove, and the upper end of the lower slip seat is provided with an axial inclined groove; the lower side inclined plane of the slip is attached to the inner inclined plane of the groove at the upper end of the lower slip seat.
The upper part of the sealing ring is provided with 4-6 square through holes in the radial direction, the seat seal locking block is arranged in the square through hole in the upper part of the sealing ring, and two sealing ring grooves are formed above and below the internal thread in the lower part of the sealing ring; the sealing ring seals the lower end of a salvaging connecting rod and the upper end of an internal connecting pipe, the outer circular surface of the lower end of the salvaging connecting rod abuts against the inner circular surface of the right side of the seat seal locking block, an oblique angle is formed between the upper outer circle of the left side of the seat seal locking block and the lower outer circle of the left side of the seat seal locking block, the oblique angle part of the left side of the seat seal locking block enters the groove in the upper portion of the inner diameter of the supporting pipe, the seat seal locking block locks the sealing ring and the supporting pipe, the upper end of the supporting pipe is in threaded connection with the lower end of the clamping ring, the lower end of the outer pipe is in threaded connection with the upper end of the upper clamping ring, and the internal thread of the lower portion of the sealing ring is connected to the thread of the upper end of the internal connecting pipe.
The upper pressure ring and the lower pressure ring are annular bodies with inner and outer steps, the upper parts of the annular bodies are provided with external threads, and the lower parts of the annular bodies are provided with internal threads; the upper inner pipe and the lower inner pipe are cylindrical bodies with steps outside, and the upper ends of the upper inner pipe and the lower inner pipe are provided with external threads; the push-up ring is an annular body with an inner step, and the lower end of the push-up ring is provided with an internal thread; the lower end of the upper pressure ring and the upper end of the upper inner tube are connected together through threads, the upper end of the lower pressure ring and the lower end of the upper push ring are connected together through threads, the lower end of the lower pressure ring and the upper end of the lower inner tube are connected together through threads, and the lower push ring is internally provided with the push-assisting ring through threads.
The piston is a cylindrical body with an outer step, an inner thread is arranged at the upper end of the piston, sealing grooves are formed in the inner surface and the outer surface of the lower end of the piston, sealing rubber rings are respectively installed in the inner sealing groove and the outer sealing groove, spiral inverted teeth are arranged on the upper portion of the outer surface of the piston, and an annular groove is formed in the piston; the open locking ring is an annular body with a longitudinal opening, an outer chamfer of two millimeters is arranged at the upper end of the open locking ring, spiral inverted teeth are arranged on the inner surface of the open locking ring, the locking split is an annular body with steps outside, and the lower part of the locking split is provided with a longitudinal opening; the piston outer cylinder is a cylinder body with steps inside, the upper end of the cylinder body is provided with internal threads, the lower end of the cylinder body is provided with external threads, and a sealing ring is arranged in a sealing groove on the inner circular surface at the lower part of the cylinder body; the piston inner tube is a cylinder with steps inside and outside, two sealing grooves are arranged in an inner hole at the lower end of the piston inner tube, and a sealing ring is arranged in each sealing groove.
The top ring is sleeved on the piston, the open lock is sleeved at the root of the spiral inverted tooth of the piston through the spiral inverted tooth, and the locking split is arranged on the annular groove of the piston; the lower part cartridge of piston is in the upper portion hole of piston urceolus, and the lower extreme that piston urceolus upper end passed through screw thread and push down the ring links together, and the upper end of piston inner tube inserts piston urceolus downthehole and the downthehole top of piston lower extreme below the locking split, and the air cock is installed at piston inner tube lower extreme downthehole, and the air cock keeps off the ring and passes through threaded connection to sand control cover upper end internal thread root, and sand control cover upper end and piston urceolus lower extreme pass through threaded connection and be in the same place.
The beneficial effects of the invention are:
(1) The installation to the well is easy, and the operation is convenient; the device can be installed underground by controlling the lifting of a ground steel wire well testing vehicle, and the throttleer can be installed at any underground design position of a gas production well by utilizing a high-pressure seat seal in the gas well;
(2) The packing is convenient and reliable; the piston, the outer piston cylinder and the inner piston tube form a compressible closed air bag, the pressure in the air bag is 1 atmosphere of ground air pressure, a large pressure difference is formed between the pressure in the air bag and the pressure in the shaft after the air bag is placed in the well, the rubber cylinder can be compressed and expanded by utilizing the pressure difference, the shaft is tightly sealed by the expanded rubber cylinder, and the appropriate piston area can be designed according to actual conditions.
(3) When the throttler is installed underground, a special delivery device is assembled, a central rod on the special delivery device is inserted into a locking split valve hole from a hole above a fishing connecting rod, an outer circular boss on the locking split valve is locked in an annular groove of a piston inner hole, so that a piston and a piston inner tube cannot move relatively, the annular groove outside the upper end of a connecting ring is grasped by a delivery device upper resolution, then the resolution is sleeved by a delivery device sleeve, a spring is arranged in the sleeve to control the disengagement speed of the throttler, the slip is in a contracted state at the moment, a larger distance always exists between the slip and the inner wall of an oil tube, the problem of blocking cannot occur, and the accident of blocking in a shaft is avoided. The device and the throttler are stably put down underground by a steel wire of a well testing vehicle, when a preset position is reached, the putting speed is accelerated, when the releasing speed is reached, a brake is suddenly braked, the throttler is released from the device by means of speed force, air is wrapped and compressed under the action of pressure in a well, a piston drives an inner connecting pipe, a sealing ring, a fishing connecting rod, a seat seal locking block, a supporting pipe and an outer cylinder to move downwards together, meanwhile, a piston outer cylinder, a boosting ring, an upper pushing ring, a lower pushing ring, a piston inner pipe, an air nozzle baffle ring and a sand prevention cover move upwards together to compress a lower rubber cylinder, meanwhile, the boosting ring pushes the lower inner pipe, the lower pressing ring and the upper pushing ring to move upwards to compress an upper rubber cylinder, 2 rubber cylinders are pressed and bulged and then tightly attached to the inner wall of an oil pipe, a top ring pushes an opening to move upwards along with the locking ring and lock, the lower pushing ring is prevented from moving downwards, and the rubber cylinders are kept in a compressed and bulged state all the time. Meanwhile, the delivery locking block is not restrained, the pressure spring releases to push the upper slip seat and the slips downwards, the slips moves downwards and outwards along the inclined plane and is instantly attached to the inner wall of the oil pipe, and teeth on the outer circle of the slips are meshed with the inner wall of the oil pipe to prevent the throttle from moving upwards.
(4) The device is convenient to be taken out from the well. When the throttler needs to be lifted out of the well, only the lower end of a steel wire rope cap of a well testing vehicle is connected with the jar, the lower end of the jar is connected with a special fisher and is lowered into the well, the lowering speed is moderate when the position of the throttler is reached, the fishing head of the throttler is grasped, then the steel wire is lifted upwards, the jar is started to cut off the shear pin, the steel wire is lifted continuously to start the jar, the fishing connecting rod is forced to move upwards, after the lower end of the fishing connecting rod is separated from the sealing ring, the seat seal locking block loses restraint, the steel wire is lifted continuously to start the jar, the seat seal locking block moves to the right and leaves a groove in the inner circular surface of the supporting pipe, at the moment, the fisher drives the fishing head and the fishing connecting rod to move upwards, the fishing connecting ring and the slip inner pipe to move upwards together, the outer circle step of the slip inner pipe is clamped on the lower end surface of the upper slip seat, and simultaneously, the upper end boss of a slip installed in the groove at the lower end is driven by the upper slip seat to move upwards. At the moment, the piston outer cylinder drives the lower push ring, the lower push ring drives the lower inner tube, the lower inner tube drives the lower press ring, the lower press ring drives the upper inner tube, the upper inner tube drives the upper press ring, the upper press ring drives the outer cylinder, the outer cylinder drives the lower slip holder to move downwards relatively, the lower slip holder downwards pulls the lower boss of the slip arranged in the inclined groove of the upper end of the lower slip holder to force the slip to be recovered, meanwhile, the seal ring, the inner connecting pipe and the piston also downwards move along with the piston outer cylinder, the compression distance of the upper rubber cylinder and the lower rubber cylinder is opened, the upper rubber cylinder and the lower rubber cylinder are released and recovered, at the moment, the occlusion of the slip and the sealing of the rubber cylinder are released, the throttleer can be lifted out of the well, if the throttleer is not lifted, the throttleer downwards vibrates for multiple times, the jar knocker transmits a lower knocking force to the salvaging connecting rod, the salvaging connecting rod pushes the slip inner tube and the supporting tube, pushes the upper press ring and the outer cylinder and the lower slip holder connected together to move downwards, and then the throttleer can be forced to retract inwards. After downward jolting for many times, the throttleer easy to drag and drag is easily fished out. In the lifting process, the piston outer cylinder and the piston inner tube do not need to be displaced, and even if rust or sand jam occurs between the piston and the piston outer cylinder, the lifting is not influenced, and accidents are avoided.
(5) Because the slips move obliquely and parallelly when moving outwards, all slips are in uniform contact and engagement with the inner wall of the oil pipe, and all slips are stressed uniformly and conveniently salvaged.
(6) The application range is wide. Each part in the device can bear high pressure, is suitable for working in a deep well or a high-pressure gas well, and can also be used for gas production in an inclined well.
Drawings
FIG. 1 is a schematic structural diagram of an upper half part of an easy-dropping-fishing throttle device of the invention;
FIG. 2 is a schematic structural diagram of the lower half part of the easy-dropping-fishing throttle device.
In the figure: 1. the fishing device comprises a fishing head, 2 parts of a fishing connecting rod, 3 parts of shear pins, 4 parts of a connecting ring, 5 parts of a pressing ring, 6 parts of a pressure spring, 7 parts of a delivery locking block, 8 parts of an upper slip seat, 9 parts of a slip, 10 parts of a lower slip seat, 11 parts of an inner slip pipe, 12 parts of a supporting pipe, 13 parts of a sealing ring, 14 parts of a seat sealing block, 15 parts of an outer pipe, 16 parts of an inner connecting pipe, 17 parts of an upper pressing ring, 18 parts of an upper rubber sleeve, 19 parts of an upper inner pipe, 20 parts of an upper pushing ring, 17' parts of a lower pressing ring, 18' parts of a lower rubber sleeve, 19' parts of a lower inner pipe, 21 parts of a lower pushing ring, 22 parts of a piston, 23 parts of a boosting ring, 24 parts of a locking ring, 25 parts of a top ring, 26 parts of locking split pieces, 27 parts of an outer piston cylinder, 28 parts of an inner piston pipe, 29 parts of an air nozzle, 30 parts of an air nozzle blocking ring and a sand control cover.
Detailed Description
The invention is described in detail below with reference to the drawings and the detailed description.
The invention relates to an easy-throwing and fishing throttle, which comprises a fishing head 1, a fishing connecting rod 2, a connecting ring 4, a pressing ring 5, a pressure spring 6, a throwing locking block 7, an upper slip seat 8, a slip 9, a lower slip seat 10, a slip inner tube 11, a supporting tube 12, a sealing ring 13, a seat locking block 14, an outer tube 15, an inner connecting tube 16, an upper pressing ring 17, an upper rubber tube 18, an upper inner tube 19, an upper push ring 20, a lower press ring 17', a lower rubber tube 18', a lower inner tube 19', a lower push ring 21, a piston 22, a boosting ring 23, an opening locking ring 24, a top ring 25, a locking resolution 26, a piston outer tube 27, a piston inner tube 28, an air nozzle 29, an air nozzle baffle ring 30 and a sand control cover 31, wherein the fishing rod is connected with the upper slip seat 8, the lower slip seat 18, the lower slip seat 19, the lower slip seat, the upper slip seat, the lower slip seat and the lower slip seat;
the fishing head 1 is connected to the upper end of a fishing connecting rod 2 through threads, a connecting ring 4 is sleeved on the fishing connecting rod 2, the upper end of the connecting ring 4 is fixed on the fishing connecting rod 2 through a shear pin 3, a pressure spring 6 is sleeved on the excircle of the connecting ring 4, the upper end of the pressure spring 6 is pressed by a pressure ring 5, the pressure ring 5 is connected to the upper end of the connecting ring 4 through threads, the lower end of the connecting ring 4 is connected to the upper end of a slip inner tube 11 through internal threads, the outer circular surface of the lower end of the connecting ring 4 is inserted into an inner hole in the upper part of an upper slip seat 8, 4 radial square holes are formed in the upper part of the upper slip seat 8, a delivery locking block 7 is installed in each square hole, and an oblique angle is formed above and below the right side of the delivery locking block 7 so that the delivery locking block can conveniently pass in and out; manually moving the upper slip seat 8 upwards, compressing the pressure spring 6 to enable a square hole at the upper part of the upper slip seat 8 to be aligned with a groove of an inclined surface at the lower part of the connecting ring 4, then pushing the delivery locking block 7 into the groove at the lower part of the connecting ring 4, enabling an inner oblique angle of the delivery locking block 7 to be matched with the inclined surface of the groove at the lower part of the connecting ring 4, then sleeving an outer cylinder at the upper part of the upper slip seat 8 by using an outer cylinder of the delivery device, and locking the upper slip seat 8 and the connecting ring 4;
teeth are arranged on the outer circular surface of the slip 9, a radial inclined plane groove is arranged at the upper end of the slip, an axial inclined plane is arranged in the lower end of the slip, and bosses are arranged on two sides of the inclined plane; the upper slip bowl 8 and the lower slip bowl 10 are both cylindrical bodies, the lower end of the upper slip bowl 8 is provided with a radial inclined plane groove, the upper end of the lower slip bowl 10 is provided with an axial inclined plane groove, and two sides of the inclined plane are provided with small grooves;
the inclined plane recess of slips 9 upper end is installed in the inclined plane recess of last slip bowl 8 lower extreme, and the boss of slips 9 lower extreme axial inclined plane both sides is installed in the little recess of slip bowl 10 upper end axial inclined plane both sides down, and slips 9 downside inclined plane and slip bowl 10 upper end recess inner slope laminating are in the same place down, has the step on slips inner tube 11 excircle, and slips inner tube 11 step card is on the lower terminal surface of last slip bowl 8 when shifting up. When the upper slip seat 8 moves upwards, the slips 9 retract into the steel body of the restrictor under the action of the upper and lower inclined surfaces;
the lower end of a salvaging connecting rod 2 is inserted into an upper hole of a sealing ring 13, the upper part of the sealing ring 13 is provided with 4-6 square through holes in the radial direction, a seat seal block 14 is arranged in the square hole at the upper part of the sealing ring 13, two seal ring grooves are arranged above and below an internal thread at the lower part of the sealing ring 13 and are provided with sealing rings, the lower part of the sealing ring 13 is connected with the upper end of an internal connecting pipe 16 through an internal thread, the lower end of the salvaging connecting rod 2 is propped against the inner circular surface at the right side of the seat seal block 14, the upper part and the lower part of the external circle at the left side of the seat seal block 14 are provided with oblique angles, the oblique angle part at the left side of the seat seal block 14 enters the groove at the upper part of the internal diameter of a supporting pipe 12, the seat seal block 14 locks the sealing ring 13 and the supporting pipe 12, the upper end of the supporting pipe 12 is connected with the lower end of a slip inner pipe 11 through a thread, the lower end of the supporting pipe 12 is supported on the upper end surface of an upper slip ring 17, the external circle of the supporting pipe 12, an external cylinder is sleeved with an external cylinder 15, the external cylinder is connected with the upper end of the lower slip seat 10 through a thread of the external cylinder 15, the upper end of the external cylinder, the external cylinder 15 is connected with the upper end of the upper slip seat 17, the upper end of the upper slip seat, the upper end of the upper press ring 17, the external cylinder is connected with the upper end of the upper press ring 15, the upper end of the internal thread of the internal connecting pipe 16, and the internal thread of the sealing ring 13 is connected with the internal connecting pipe 16;
the upper pressure ring 17 and the lower pressure ring 17' are annular bodies with inner and outer steps, the upper part is provided with an external thread, and the lower part is provided with an internal thread; the upper inner tube 19 and the lower inner tube 19' are cylindrical bodies with steps outside, and the upper ends of the cylindrical bodies are provided with external threads; the push-up ring 20 is an annular body having an inner step, and has an internal thread at a lower end thereof;
the upper push ring 20 and the upper rubber sleeve 18 are sequentially sleeved on the upper inner pipe 19, the upper press ring 17 and the upper inner pipe 19 are sequentially sleeved on the upper part of the inner connecting pipe 16, the lower end of the upper press ring 17 and the upper end of the upper inner pipe 19 are connected together through threads, and a sealing ring is arranged between the upper press ring 17 and the inner connecting pipe 16. The lower push ring 21 and the lower rubber cylinder 18 'are sequentially sleeved on the lower inner pipe 19', the lower press ring 17 'and the lower inner pipe 19' are sequentially sleeved on the lower part of the inner connecting pipe 16, the upper end of the lower press ring 17 'and the lower end of the upper push ring 20 are connected together through threads, the lower end of the lower press ring 17' and the upper end of the lower inner pipe 19 'are connected together through threads, a sealing ring is installed between the lower press ring 17' and the inner connecting pipe 16, and the lower push ring 21 is internally provided with the auxiliary push ring 23 through threads.
The piston 22 is a cylindrical body with an outer step, an inner thread is arranged at the upper end of the cylindrical body, sealing grooves are formed in the inner outer surface of the lower end of the cylindrical body, sealing rubber rings are respectively installed in the inner sealing grooves and the outer sealing grooves, and spiral inverted teeth are arranged on the upper portion of the outer surface of the piston 22;
the split locking ring 24 is an annular body with a longitudinal opening, an outer chamfer of two millimeters at its upper end, and helical barbs on its inner surface, i.e. similar to a saw-tooth thread; the locking split 26 is an annular body having a step on the outside, wherein the lower portion has a longitudinal opening; the piston outer cylinder 27 is a cylinder with steps inside, the upper end of the cylinder is provided with internal threads, the lower end of the cylinder is provided with external threads, and a sealing ring is arranged in a sealing groove on the inner circular surface of the lower part of the cylinder; the piston inner tube 28 is a cylindrical body with steps inside and outside, two sealing grooves are arranged in an inner hole at the lower end of the piston inner tube, and sealing rings are arranged in the sealing grooves;
the top ring 25 is sleeved on the outer circular step of the piston 22, the opening locking ring 24 is sleeved on the root of the spiral inverted tooth of the piston 22 through the spiral inverted tooth, the upper end of the piston 22 is installed at the lower end of the inner connecting pipe 16 through threads, and the lower part of the piston 22 is inserted into the upper hole of the piston outer cylinder 27. The locking split 26 is mounted on an annular groove in the bore of the piston 22. The upper end of the piston outer cylinder 27 is connected with the lower end of the lower push ring 21 through threads, the upper end of the piston inner tube 28 is inserted into the piston outer cylinder 27 hole and the lower end of the piston 22 hole and is propped below the locking split 26, the air nozzle 29 is installed in the lower end hole of the piston inner tube 28, the air nozzle baffle ring 30 is connected to the root of the inner thread on the upper end of the sand control cover 31 through threads, and the upper end of the sand control cover 31 is connected with the lower end of the piston outer cylinder 27 through threads.
According to the invention, two rubber cylinders are installed, and one rubber cylinder can be installed or three or four rubber cylinders can be installed according to the specific conditions of the oil well, and the structure can be analogized in turn as above.
The invention relates to an easy-to-drag throttleer, which has the specific working principle that:
when the throttler is installed underground, the throttler is installed on a feeder, a central rod on a special feeder is inserted into a hole of a locking split 26 from a hole above a fishing connecting rod 2, the locking split 26 is expanded, an annular bulge at the lower part of the locking split 26 is fixed in an annular groove in a hole of a piston 22, an upper bevel and a lower bevel of the annular bulge at the lower part of the locking split 26 are matched with an upper bevel and a lower bevel of the annular groove in the hole of the piston 22, an inner boss at the lower end of a distinguishing claw head on the feeder is clamped into the annular groove at the outer part of the upper end of a connecting ring 4, then a sleeve on the feeder is sleeved on the outer circular surface at the lower end of the distinguishing claw head, and a spring in the sleeve of the feeder controls the disengaging speed. After the slip 9 is installed, the slip is in a contraction state, so that the slip is kept within the maximum outer diameter of the throttler, and a larger distance is reserved between the slip 9 and the inner wall of the oil pipe all the time, so that the slip 9 and the inner wall of the oil pipe are prevented from being rubbed or clamped on the oil pipe in the process of going down the well. At this time, a closed space is formed below the piston 22, and the pressure therein is 1 atmosphere. The steel wires of the well testing vehicle are connected with the feeders, the feeders are slowly and smoothly put into a gas well, the lowering speed is accelerated when the underground preset position is reached, the emergency brake is realized when the lowering speed is reached, the sleeve of the feeder moves upwards, the claw head is separated from the connecting ring 4 of the throttler, and the central rod of the feeder is also pulled out from the locking split 26. The air bag is compressed under the action of the pressure in the well, the piston 22 drives the inner connecting pipe 16, the sealing ring 13, the fishing connecting rod 2, the seat seal locking block 14, the supporting pipe 12, the outer cylinder 15 and the upper part of the restrictor to move downwards together, the piston outer cylinder 27, the boosting ring 23, the upper pushing ring 20, the lower pushing ring 21, the piston inner pipe 28, the air nozzle 29, the air nozzle baffle ring 30 and the sand control cover 31 move upwards together, the lower rubber cylinder 18' is compressed and expanded, the boosting ring 23 pushes the lower inner pipe 19', the lower pressing ring 17' and the upper pushing ring 20 to move upwards, the upper rubber cylinder 18 is also compressed and expanded, the two rubber cylinders are tightly attached to the inner wall of the oil pipe to seal the oil pipe after being compressed and expanded, the top ring 25 pushes the opening locking ring 24 to move upwards along with the opening locking ring 24, when the opening locking ring 24 moves upwards, the piston 22 moves downwards, the inner inverted teeth of the opening locking ring 24 meet the outer inverted teeth of the piston 22, the inner inverted teeth of the slips 21 are engaged together, the lower pushing ring 21 cannot move downwards, the rubber cylinders are always kept in a compressed and the state, the sealing of the oil pipe is kept, the sealing block 7 is released, the upper pressure spring 6 is released, the outer teeth of the well bore 9 and the slips seat and the outer teeth of the slip seat 9 are prevented from moving upwards, the slip seat and the slip seat is attached to the outer wall of the natural gas production well, and the slip is prevented from moving upwards, and immediately, and the slip is prevented from moving upwards.
When the throttler needs to be lifted out of a well, only the lower end of a steel wire rope cap of a well testing vehicle is connected with a jar, the lower end of the jar is connected with a special fisher and is lowered into the well, the lowering speed is moderate when the position of the throttler is reached, the fishing head 1 of the throttler is grasped, then a steel wire is lifted upwards, the jar is started to cut off a shear pin 3, the steel wire is continuously lifted to start the jar, the fishing connecting rod 2 is forced to move upwards, after the lower end of the fishing connecting rod 2 is separated from a sealing ring 13, the seat seal locking block 14 loses restraint, the steel wire is continuously lifted to start the jar, the seat seal locking block 14 moves towards the right side and leaves a groove on the inner circular surface of a supporting pipe 12, at the moment, the fisher drives the fishing head 1 and the fishing connecting rod 2 to move upwards, the fishing connecting rod 2 drives a connecting ring 4 and a slip inner pipe 11 to move upwards together, the step of the slip inner pipe 11 is clamped on the lower end surface of the slip seat 8, the upper slip seat 8 moves upwards, and simultaneously the upper slip seat 8 drives an excircle boss of an excircle 9 mounted in the groove at the lower end to move upwards. At this time, the piston outer cylinder 27 drives the lower push ring 21, the lower push ring 21 drives the lower inner tube 19', the lower inner tube 19' drives the lower press ring 17', the lower press ring 17' drives the upper push ring 20, the upper push ring 20 drives the upper inner tube 19, the upper inner tube 19 drives the upper press ring 17, the upper press ring 17 drives the outer cylinder 15, the outer cylinder 15 drives the lower slip seat 10 to move downward together, the lower slip seat 10 pulls downward the lower boss of the slip 9 installed in the groove on the inclined surface of the upper slip seat to force the slip 9 to be recovered, and simultaneously, the seal ring 13, the inner connection tube 16 and the piston 22 also move downward together with the piston outer cylinder 27, the compression distance between the upper rubber cylinder 18 and the lower rubber cylinder 18 'is opened, the upper rubber cylinder 18 and the lower rubber cylinder 18' are released and recovered, the engagement of the slip 9 and the packing of the rubber cylinders are released, and the choke can be lifted out from the well. If the fishing is not in motion, the throttle is knocked downwards, the jar knocker transmits a knocking force to the fishing connecting rod 2, the fishing connecting rod 2 pushes the slip inner pipe 11 and the connected supporting pipe 12, and the supporting pipe 12 pushes the upper pressing ring 17, the outer cylinder 15 and the lower slip seat 10 which are connected together to move downwards, so that the slip 9 can be forced to loosen and then retract inwards. After the slips 9 are forced to loosen after multiple downward shocks, the choke holder can be easily fished out. In the lifting process, the piston 22, the piston outer cylinder 27 and the piston inner tube 28 do not need to be displaced, and even if rust or sand jam occurs between the piston 22 and the piston outer cylinder 27, the lifting is not influenced, and accidents are avoided.
The choke holder is convenient to install and operate in a well, and the device can be installed in the well by controlling the lowering speed of the steel wire going into the well on the ground; the sealing is reliable, the rubber sleeve can be compressed and expanded by utilizing the pressure difference to seal the oil pipe, and the accident that the rubber sleeve is clamped in the shaft can be avoided. The fishing tool is convenient to pull out, and fishing is not influenced even if the piston is corroded or clamped, so that fishing accidents can be avoided. The method is suitable for producing gas in deep wells, high-pressure gas wells or inclined wells.
Claims (7)
1. An easy-throwing-fishing throttleer is characterized by comprising a fishing head (1), a fishing connecting rod (2), a connecting ring (4), a pressing ring (5), a pressure spring (6), a delivery locking block (7), an upper slip seat (8), a slip (9), a lower slip seat (10), a slip inner tube (11), a supporting tube (12), a sealing ring (13), a seat sealing locking block (14), an outer tube (15), an inner connecting tube (16), an upper pressing ring (17), an upper slip (18), an upper inner tube (19), an upper push ring (20), a lower press ring (17 '), a lower slip (18 '), a lower inner tube (19 '), a lower push ring (21), a piston (22), a boosting ring (23), an opening locking ring (24), a top ring (25), a locking resolution ring (26), a piston outer tube (27), a piston inner tube (28), an air tap (29), an air tap retaining ring (30) and a sand prevention cover (31); the fishing head (1) is in threaded connection with the upper end of the fishing connecting rod (2), the connecting ring (4) is sleeved on the fishing connecting rod (2), the lower end of the connecting ring (4) is connected with the upper end of the slip inner tube (11) through internal threads, the outer circular surface of the lower end of the connecting ring (4) is inserted into the upper inner hole of the upper slip seat (8), the upper end of the slip (9) is installed on the upper slip seat (8), the lower end of the slip (9) is installed in the lower slip seat (10), the lower end of the fishing connecting rod (2) is inserted into the upper hole of the sealing ring (13), and the lower internal threads of the sealing ring (13) are connected with the upper end of the inner connecting tube (16); go up push ring (20) and last packing element (18) and overlap in proper order on last inner tube (19), go up clamping ring (17) and last inner tube (19) and overlap in proper order on the upper portion of interconnection pipe (16), push ring (21) and packing element (18 ') suit in proper order down on inner tube (19') down, clamping ring (17 ') and lower inner tube (19') suit in proper order are in the lower part of interconnection pipe (16) down, the lower extreme at interconnection pipe (16) is passed through the screw thread installation to the upper end of piston (22).
2. The choke easy to drag and salvage according to claim 1, characterized in that, the upper end of the connecting ring (4) is fixed on the fishing connecting rod (2) through a shear pin (3), a pressure spring (6) is sleeved on the excircle of the connecting ring (4), the upper end of the pressure spring (6) is pressed by a pressure ring (5), and the pressure ring (5) is connected to the upper end of the connecting ring (4) through threads.
3. The easy-dropping-fishing throttleer according to claim 1, wherein teeth are arranged on the outer circular surface of the slip (9), a radial inclined plane groove is arranged at the upper end, an axial inclined plane is arranged inside the lower end, and bosses are arranged on two sides of the inclined plane; the upper slip seat (8) and the lower slip seat (10) are both cylindrical bodies, the lower end of the upper slip seat (8) is provided with a radial inclined plane groove, and the upper end of the lower slip seat (10) is provided with an axial inclined plane groove; the lower side inclined plane of the slip (9) is attached to the inner inclined plane of the groove at the upper end of the lower slip seat (10).
4. The easy-dropping-fishing throttle device according to claim 1, wherein the upper part of the sealing ring (13) has 4-6 square through holes in the radial direction, the seat seal lock block (14) is installed in the square through hole in the upper part of the sealing ring (13), and two sealing ring grooves are arranged above and below the internal thread in the lower part of the sealing ring (13); the lower extreme of salvaging connecting rod (2) is sealed with the upper end of in-connection pipe (16) in sealing ring (13), the outer disc top of salvaging connecting rod (2) lower extreme is on the inner disc on seat block (14) right, there is the oblique angle about seat block (14) left side excircle, the oblique angle part on seat block (14) left side gets into in the recess on stay tube (12) internal diameter upper portion, seat block (14) pins sealing ring (13) and stay tube (12), the lower extreme threaded connection of stay tube (12) upper end and slips inner tube (11), the lower extreme of stay tube (12) supports on last clamping ring (17) up end, suit urceolus (15) on stay tube (12) excircle, the upper end and the lower slip seat (10) threaded connection of urceolus (15), the lower extreme of urceolus (15) and the upper end threaded connection of last clamping ring (17), sealing ring (13) lower part internal thread connection is on the internal thread of in-connection pipe (16) upper end including.
5. The easy-dropping throttle device according to claim 1, wherein the upper pressing ring (17) and the lower pressing ring (17') are annular bodies with inner and outer steps, the upper part is provided with an external thread, and the lower part is provided with an internal thread; the upper inner pipe (19) and the lower inner pipe (19') are cylindrical bodies with steps outside, and the upper ends of the cylindrical bodies are provided with external threads; the push-up ring (20) is an annular body with an inner step, and the lower end of the push-up ring is provided with an internal thread; the lower end of the upper compression ring (17) is connected with the upper end of the upper inner tube (19) through threads, the upper end of the lower compression ring (17 ') is connected with the lower end of the upper push ring (20) through threads, the lower end of the lower compression ring (17 ') is connected with the upper end of the lower inner tube (19 ') through threads, and the lower push ring (21) is internally provided with a push assisting ring (23) through threads.
6. The easy-dropping fishing restrictor of claim 1, wherein the piston (22) is a cylindrical body with an outer step, the upper end of the cylindrical body is provided with internal threads, the inner and outer surfaces of the lower end of the cylindrical body are respectively provided with a sealing groove, sealing rubber rings are respectively arranged in the inner and outer sealing grooves, the upper part of the outer surface of the piston (22) is provided with spiral inverted teeth, and an annular groove is arranged in the piston (22); the open locking ring (24) is an annular body having a longitudinal opening, an outer chamfer of two millimeters at the upper end thereof, and a helical tooth on the inner surface thereof, and the locking split (26) is an annular body having a step on the outside thereof, wherein the lower portion has a longitudinal opening; the piston outer cylinder (27) is a cylinder body with steps inside, the upper end of the cylinder body is provided with internal threads, the lower end of the cylinder body is provided with external threads, and a sealing ring is arranged in a sealing groove on the inner circular surface of the lower part of the cylinder body; the piston inner tube (28) is a cylindrical body with steps inside and outside, two sealing grooves are arranged in an inner hole at the lower end of the piston inner tube, and sealing rings are arranged in the sealing grooves.
7. A free-bailing restrictor according to claim 6 characterized in that the top ring (25) is fitted over the piston (22), the split locking ring (24) is fitted over the root of the helical back-teeth of the piston (22) by the helical back-teeth, the locking segments (26) are mounted on the annular groove of the piston (22); the lower part cartridge of piston (22) is in the upper portion hole of piston urceolus (27), the lower extreme that piston urceolus (27) upper end was passed through the screw thread and is linked together with lower push ring (21), insert piston urceolus (27) downthehole and the downthehole top of piston (22) lower extreme below locking split (26) in piston urceolus (28) upper end of piston inner tube, air cock fender ring (30) are installed downthehole at piston inner tube (28) lower extreme, threaded connection is passed through to sand control cover (31) upper end internal thread root in air cock fender ring (30), sand control cover (31) upper end and piston urceolus (27) lower extreme pass through threaded connection and are in the same place.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210807320.2A CN115142807B (en) | 2022-07-08 | 2022-07-08 | Easy-to-put and drag-out throttle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210807320.2A CN115142807B (en) | 2022-07-08 | 2022-07-08 | Easy-to-put and drag-out throttle |
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| CN115142807A true CN115142807A (en) | 2022-10-04 |
| CN115142807B CN115142807B (en) | 2024-06-14 |
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| CN202210807320.2A Active CN115142807B (en) | 2022-07-08 | 2022-07-08 | Easy-to-put and drag-out throttle |
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| CN109763797A (en) * | 2019-03-07 | 2019-05-17 | 陕西航天德林科技集团有限公司 | A kind of underground throttle device |
| CN215718546U (en) * | 2021-08-27 | 2022-02-01 | 成都厚信健科技有限公司 | Slip type uprush prevention device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2921262Y (en) * | 2005-06-15 | 2007-07-11 | 冀东石油勘探开发公司井下作业公司 | Lifting retractable fisher |
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| CN109763797A (en) * | 2019-03-07 | 2019-05-17 | 陕西航天德林科技集团有限公司 | A kind of underground throttle device |
| CN215718546U (en) * | 2021-08-27 | 2022-02-01 | 成都厚信健科技有限公司 | Slip type uprush prevention device |
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| Publication number | Publication date |
|---|---|
| CN115142807B (en) | 2024-06-14 |
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