CN114704220A - Electromagnetic fishing device for horizontal well - Google Patents
Electromagnetic fishing device for horizontal well Download PDFInfo
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- CN114704220A CN114704220A CN202210254908.XA CN202210254908A CN114704220A CN 114704220 A CN114704220 A CN 114704220A CN 202210254908 A CN202210254908 A CN 202210254908A CN 114704220 A CN114704220 A CN 114704220A
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- outer cylinder
- iron core
- horizontal well
- electromagnetic
- cylinder body
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B31/06—Fishing for or freeing objects in boreholes or wells using magnetic means
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
Abstract
The application relates to the field of underground mechanical equipment, in particular to an electromagnetic fishing device for a horizontal well. The horizontal well electromagnetic salvager comprises an electromagnetic assembly, a material collecting piece and a material pushing assembly; the electromagnetic assembly comprises an outer cylinder, an excitation iron core and a power supply unit; the excitation iron core extends along the axial direction of the outer cylinder body and is accommodated in the outer cylinder body, the excitation iron core is electrically connected with the power supply unit, and the excitation iron core is used for forming a magnetic field for adsorbing metal materials in an electrically conductive state; the collecting part is connected with the outer cylinder and is used for adsorbing metal materials; the pushing assembly is connected with the outer cylinder; the material collecting component and the material pushing component are distributed at two ends of the outer cylinder body along the axial direction of the outer cylinder body; the material pushing assembly is used for pushing the metal material adsorbed by the excitation iron core into the material collecting piece. This horizontal well electromagnetic salvage ware adsorbable metal material to can concentrate adsorbed metal material in the collecting part, prevent to fall back in the well, thereby can increase the adsorption capacity, and improve adsorption efficiency.
Description
Technical Field
The application relates to the field of underground mechanical equipment, in particular to an electromagnetic fishing device for a horizontal well.
Background
Along with the increasing demand of people for high-quality life, the social demand for energy is larger and larger, but the difficulty of fossil energy extraction is improved along with more severe geological, storage, yield and safety conditions, higher requirements are also provided for a drilling process in the extraction process of oil and natural gas resources on the land, the drilling process usually needs to consider the drilling technology of horizontal wells and ultra-deep wells, metal fragments, small metal devices or a large amount of metal falling objects are suspended or deposited in the wells during the drilling process, if the drilling process is not timely salvaged and cleaned, instruments or tools in the wells are damaged, if the drilling process is a vertical well, strong magnets can be put in for adsorption and salvage to the ground, if the drilling process is a horizontal well section, the deposition of the iron chips and the falling objects needs to be considered, and the adsorbed falling objects are prevented from colliding with the well wall and falling back into the well again, junk salvage is more difficult with respect to vertical wells.
When the horizontal well is salvaged in the prior art, the problems of small salvage amount, small adsorption force, easiness in falling and low salvage efficiency exist.
Disclosure of Invention
The application provides a horizontal well electromagnetism overshot to improve above-mentioned problem.
The invention is particularly such that:
a horizontal well electromagnetic salvager comprises an electromagnetic assembly, a material collecting piece and a material pushing assembly;
the electromagnetic assembly comprises an outer cylinder, an excitation iron core and a power supply unit; the excitation iron core extends along the axial direction of the outer cylinder and is accommodated in the outer cylinder, the excitation iron core is electrically connected with the power supply unit, and the excitation iron core is used for forming a magnetic field for adsorbing metal materials in an electrically conductive state;
the collecting part is connected with the outer cylinder and is used for adsorbing metal materials;
the pushing assembly is connected with the outer cylinder; the material collecting component and the material pushing component are distributed at two ends of the outer cylinder body along the axial direction of the outer cylinder body; the material pushing assembly is used for pushing the metal material adsorbed by the excitation iron core into the material collecting piece.
In one embodiment of the invention, the pushing assembly comprises a motor, a piston and a transmission unit;
the motor is connected with the outer cylinder body and is electrically connected with the power supply unit; the piston is sleeved on the excitation iron core and is connected with the outer cylinder body in a sliding manner along the axial direction of the outer cylinder body; the transmission unit is in transmission connection with the motor and the piston;
the motor is used for driving the piston to move relative to the excitation iron core through the transmission unit so as to push the metal materials adsorbed on the outer peripheral surface of the excitation iron core to the material collecting piece.
In one embodiment of the invention, the transmission unit comprises a gear carrier, at least one transmission shaft and at least one transmission wheel;
the gear carrier is connected with the outer cylinder body, and the gear carrier and the material collecting pieces are distributed at two ends of the outer cylinder body in the axial direction; one end of the excitation iron core, which is far away from the material collecting piece, is connected with the gear rack; the motor is connected with the gear rack; the power supply unit is connected with the gear rack; the gear rack and one end of the excitation iron core connected with the gear rack are both provided with a channel for the transmission shaft to pass through;
the transmission shaft is connected with the piston and extends along the axial direction of the outer cylinder body;
the transmission gear is rotatably connected with the gear rack, is sleeved on the transmission shaft and is in threaded connection with the transmission shaft; the transmission gear is in transmission connection with an output shaft of the motor;
the motor is used for driving the transmission gear to rotate relative to the gear carrier so as to drive the transmission shaft to reciprocate along the axis of the outer cylinder body, and further drive the piston to reciprocate along the axis of the outer cylinder body.
In one embodiment of the present invention, the power supply unit includes a battery and a protection cylinder;
the protective cylinder is connected with the gear carrier, and the outer cylinder body and the protective cylinder are respectively connected with two ends of the gear carrier along the axial direction of the outer cylinder body;
the motor and the battery are accommodated in the protective barrel; the battery is electrically connected with the motor and the excitation iron core; the protection barrel is used for being connected with the drill rod.
In one embodiment of the invention, the outer circumference of the protective cylinder is provided with a plurality of water drainage holes around the axis thereof.
In one embodiment of the invention, the horizontal well electromagnetic overshot further comprises a power generation assembly, and the power generation assembly is electrically connected with a battery;
the power generation assembly comprises a generator, a turbine rotor and a turbine stator; the generator is accommodated in the protective cylinder; the turbine stator is connected with the protective cylinder; the turbine rotor is communicated with an external drilling fluid pipe and is in transmission connection with an input shaft of the generator, and the turbine rotor is used for rotating under the action of the drilling fluid so as to drive the generator to generate electricity.
In one embodiment of the invention, the horizontal well electromagnetic overshot further comprises a pull-press sensor and a sealing ring;
one end of the excitation iron core facing the gear rack is connected with the tension and compression sensor, and the sealing ring is arranged at the joint of the excitation iron core and the tension and compression sensor.
In an embodiment of the invention, the horizontal well electromagnetic overshot further comprises a metal detection unit, and the metal detection unit is used for detecting metal materials outside the outer cylinder body.
In one embodiment of the invention, the outer circumferential surface of the outer cylinder body is provided with a plurality of through holes; the plurality of through holes are arranged around the axis direction of the outer cylinder body.
In one embodiment of the invention, the aggregate member comprises an aggregate cylinder and a plurality of magnets;
the collection material cylinder is connected and switched on with outer barrel, and a plurality of magnets distribute in the internal perisporium wall of collection material cylinder around the axis of outer barrel.
The beneficial effects of the invention are:
the horizontal well electromagnetic salvage device comprises an electromagnetic assembly, a material collecting piece and a material pushing assembly; the electromagnetic assembly comprises an outer cylinder, an excitation iron core and a power supply unit; the excitation iron core extends along the axial direction of the outer cylinder and is accommodated in the outer cylinder, the excitation iron core is electrically connected with the power supply unit, and the excitation iron core is used for forming a magnetic field for adsorbing metal materials in an electrically conductive state; the collecting part is connected with the outer cylinder and is used for adsorbing metal materials; the pushing assembly is connected with the outer cylinder; the material collecting component and the material pushing component are distributed at two ends of the outer cylinder body along the axial direction of the outer cylinder body; the material pushing assembly is used for pushing the metal material adsorbed by the excitation iron core into the material collecting piece.
Therefore, in the working process of the horizontal well electromagnetic salvage device, a magnetic field for adsorbing metal materials can be formed through the excitation iron core in the state of electric conduction, and the adsorption force of the horizontal well electromagnetic salvage device on the metal materials in the salvage process can be further improved; and pass through the in-process of magnetic force absorption metal material at the iron core that magnetizes, can collect by the adsorbed metal material propelling movement of iron core that magnetizes to the collecting piece through pushing away the material subassembly to can improve the adsorption capacity through such mode of setting up, but also can prevent simultaneously that metal material from falling back in the well.
To sum up, this horizontal well electromagnetic fishing device can adsorb metal material to can concentrate the metal material that has adsorbed in the piece that gathers materials, when preventing that metal material from dropping back in the well, can also increase the adsorption capacity, and improve adsorption efficiency.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a cross-sectional view of a horizontal well electromagnetic overshot provided by the present application;
FIG. 2 is a partial cross-sectional view of a horizontal well electromagnetic overshot provided herein;
FIG. 3 is a schematic structural view of a collecting member provided herein;
fig. 4 is a schematic structural view of a field core provided in the present application;
FIG. 5 is a schematic view of the connection between the piston and the transmission shaft provided in the present application;
FIG. 6 is a schematic structural view of an outer barrel provided herein;
FIG. 7 is a schematic structural view of a gear carrier provided herein;
fig. 8 is a schematic structural diagram of a protection cartridge provided in the present application.
Icon: 10-horizontal well electromagnetic salvage device; 11-an electromagnetic assembly; 12-a collecting member; 13-a pusher assembly; 14-an outer cylinder; 15-a field core; 16-a power supply unit; 17-a motor; 18-a piston; 19-a transmission unit; 20-gear carrier; 21-a transmission shaft; 22-a transmission wheel; 201-channel; 23-a first gear; 24-a second gear; 202-a first groove; 203-a second groove; 25-a battery; 26-a protective cylinder; 261-drainage holes; 27-a power generation assembly; 28-a generator; 29-a turbine rotor; 30-a turbine stator; 31-a tension and compression sensor; 32-sealing ring; 33-a metal detection unit; 141-a through hole; 34-a material collecting barrel; 35-a magnet; 341-mounting groove.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, as presented in the figures, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present application, it should be noted that the indication of the orientation or the positional relationship is based on the orientation or the positional relationship shown in the drawings, or the orientation or the positional relationship which is usually placed when the product of the application is used, or the orientation or the positional relationship which is usually understood by those skilled in the art, or the orientation or the positional relationship which is usually placed when the product of the application is used, is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the device or the element which is indicated must have a specific orientation, be configured and operated in a specific orientation, and therefore, cannot be understood as the limitation of the application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in this application will be understood to be a specific case for those of ordinary skill in the art.
Referring to fig. 1, the invention provides a horizontal well electromagnetic overshot 10, which comprises an electromagnetic assembly 11, a material collecting member 12 and a material pushing assembly 13;
the electromagnetic assembly 11 comprises an outer cylinder 14, an excitation iron core 15 and a power supply unit 16; the field core 15 extends along the axial direction of the outer cylinder 14 and is accommodated in the outer cylinder 14, the field core 15 is electrically connected with the power supply unit 16, and the field core 15 is used for forming a magnetic field for adsorbing metal materials in an electrically conductive state; it should be noted that the metal material refers to metal debris and small metal devices suspended or deposited in the well;
the collecting part 12 is connected with the outer cylinder 14 and is used for adsorbing metal materials;
the pushing assembly 13 is connected with the outer cylinder 14; along the axial direction of the outer cylinder 14, the material collecting part 12 and the material pushing assembly 13 are distributed at two ends of the outer cylinder 14; the pushing assembly 13 is used for pushing the metal material adsorbed by the excitation iron core 15 into the material collecting piece 12.
The working principle of the horizontal well electromagnetic salvage device 10 is as follows:
referring to fig. 1, the horizontal well electromagnetic overshot 10 includes an electromagnetic assembly 11, a material collecting member 12 and a material pushing assembly 13; the electromagnetic assembly 11 comprises an outer cylinder 14, an excitation iron core 15 and a power supply unit 16; wherein, the field core 15 extends along the axial direction of the outer cylinder 14 and is accommodated in the outer cylinder 14, the field core 15 is electrically connected with the power supply unit 16, and the field core 15 is used for forming a magnetic field for adsorbing metal materials in an electrically conductive state; the collecting part 12 is connected with the outer cylinder 14 and is used for adsorbing metal materials; the pushing assembly 13 is connected with the outer cylinder 14; along the axial direction of the outer cylinder 14, the material collecting part 12 and the material pushing assembly 13 are distributed at two ends of the outer cylinder 14; the pushing assembly 13 is used for pushing the metal material adsorbed by the excitation iron core 15 into the material collecting piece 12.
Therefore, in the working process of the horizontal well electromagnetic salvage device 10, a magnetic field for adsorbing metal materials can be formed through the excitation iron core 15 in an electrically conductive state, and the adsorption force on the metal materials in the salvage process can be further improved; and at the in-process that magnetic core 15 passes through magnetic force absorption metal material, can collect by gathering materials in the piece 12 by the adsorbed metal material propelling movement of magnetic core 15 through pushing away material assembly 13 to can improve the adsorption capacity through such mode of setting up, can also prevent simultaneously that metal material from falling back in the well.
In conclusion, the horizontal well electromagnetic overshot 10 can adsorb metal materials, can concentrate the adsorbed metal materials in the material collecting piece 12, can increase the adsorption amount and improve the adsorption efficiency while preventing the metal materials from falling back into the well.
Further, referring to fig. 1 to 8, in this embodiment, when the material pushing assembly 13 is arranged, the material pushing assembly 13 is used for transferring the metal material to the material collecting member 12 when the metal material adsorbed by the excitation iron core 15 reaches a certain amount, so as to increase the adsorption amount of the horizontal well electromagnetic overshot 10 and prevent the metal material from falling back into the well;
specifically, the pushing assembly 13 includes a motor 17, a piston 18 and a transmission unit 19; the motor 17 is connected with the outer cylinder 14, and the motor 17 is electrically connected with the power supply unit 16; the piston 18 is sleeved on the excitation iron core 15 and is connected with the outer cylinder 14 in a sliding way along the axial direction of the outer cylinder 14; the transmission unit 19 is in transmission connection with the motor 17 and the piston 18;
the motor 17 is used for driving the piston 18 to move relative to the field core 15 through the transmission unit 19 so as to push the metal material adsorbed on the outer circumferential surface of the field core 15 to the material collecting piece 12.
Therefore, when the metal material adsorbed by the field core 15 needs to be transferred to the collecting member 12, the motor 17 drives the transmission unit 19 to work, so that the piston 18 can be driven to move along the axis of the outer cylinder 14, and the metal material adsorbed by the field core 15 can be transferred to the collecting member 12 through the reciprocating motion of the piston 18.
Referring to fig. 1 to 8, in the present embodiment, when the collecting member 12 is disposed, in order to make the collecting member 12 have the function of adsorbing the metal material, the collecting member 12 includes a collecting barrel 34 and a plurality of magnets 35; the aggregate cylinder 34 is connected to and conducted with the outer cylinder 14, and the plurality of magnets 35 are distributed on the inner peripheral wall of the aggregate cylinder 34 around the axis of the outer cylinder 14. That is, the aggregate member 12 can adsorb the metal material by the plurality of magnets 35 provided in the aggregate cylinder 34, thereby preventing the metal material from falling back into the well. Specifically, the collecting member 12 may be screwed with the outer cylinder 14 to facilitate cleaning of the metal material adsorbed in the collecting barrel 34; in addition, in order to facilitate installation of the magnets 35, a plurality of installation grooves 341 are provided in the barrel 34; specifically, one end of the material collecting barrel 34, which is used for being butted with the outer barrel 14, is provided with threads, and one end of the outer barrel 14, which is used for being butted with the material collecting piece 12, is provided with threads, so that certain sealing is ensured in a threaded connection mode of the outer barrel 14 and the material collecting barrel 34; the bottom of the material collecting barrel 34 is spherical, and 2-6 square grooves are uniformly distributed on the inner wall of the material collecting barrel around the axis of the outer barrel 14, and at least one bar magnet 35 is correspondingly accommodated in each square groove.
In order to enable the piston 18 to move along the axis of the outer cylinder 14 under the driving action of the transmission unit 19, the transmission unit 19 may include a gear frame 20, at least one transmission shaft 21 and at least one transmission wheel 22;
the gear rack 20 is connected with the outer cylinder 14, and the gear rack 20 and the material collecting part 12 are distributed at two ends of the outer cylinder 14 in the axial direction; the end of the field core 15 facing away from the collecting member 12 is connected to the carrier 20; the motor 17 is connected with the gear rack 20; the power supply unit 16 is connected to the carriage 20; a channel 201 for the transmission shaft 21 to pass through is formed at one end of the gear rack 20, which is connected with the gear rack 20, and the excitation iron core 15;
the transmission shaft 21 is connected with the piston 18 and extends along the axial direction of the outer cylinder 14;
the transmission gear is rotatably connected with the gear rack 20, sleeved on the transmission shaft 21 and in threaded connection with the transmission shaft 21; the transmission gear is in transmission connection with an output shaft of the motor 17;
the motor 17 is used for driving the transmission gear to rotate relative to the gear rack 20 so as to drive the transmission shaft 21 to reciprocate along the axis of the outer cylinder 14, and further drive the piston 18 to reciprocate along the axis of the outer cylinder 14.
Therefore, by such an arrangement, the transmission shaft 21 is slidably arranged along the axis of the outer cylinder 14 relative to the gear frame 20 and the excitation core 15, and when the transmission gear rotates under the driving action of the motor 17, because the transmission gear is in threaded fit with the transmission shaft 21, the rotation of the transmission gear drives the transmission shaft 21 to slide along the axis of the outer cylinder 14, and further drives the piston 18 to move along the axis of the outer cylinder 14 relative to the excitation core 15, so that by such an arrangement, through the reverse operation of the motor 17, the piston 18 can be determined to reciprocate relative to the excitation core 15, and further the metal material adsorbed by the excitation core 15 is transferred to the collecting member 12.
It should be noted that, referring to fig. 1 to 8, in the present embodiment, an arrangement manner of providing a plurality of transmission shafts 21 is adopted, and thus, each transmission shaft 21 corresponds to one channel 201, so that a plurality of channels 201 are provided around the axis of the outer cylinder 14 at one end of the gear carrier 20, at which the excitation iron core 15 is connected to the gear carrier 20;
similarly, it is adapted that, in order to equalize the forces acting to drive the movement of the piston 18, a plurality of transmission gears are provided; specifically, the transmission gear comprises a first gear 23 and a plurality of second gears 24, the first gear 23 is in transmission connection with an output shaft of the motor 17, and each second gear 24 is correspondingly sleeved on one transmission shaft 21 and is in threaded connection with the corresponding transmission shaft 21;
since the first gear 23 and the second gears 24 are correspondingly mounted, a first groove 202 and a plurality of second grooves 203 are provided on the side of the carrier 20 facing the protection cylinder 26, and the second grooves 203 are all communicated with the first groove 202; the first gear 23 is rotatably disposed in the first recess 202, each of the second gears 24 is rotatably disposed in one of the second recesses 203, and the plurality of second gears 24 are engaged with the first gear 23; each second groove 203 is provided with a channel 201 which is in sliding fit with the transmission shaft 21, that is, the channel 201 which is provided on the gear rack 20 and is used for the transmission shaft 21 to pass through is located at the bottom of the second groove 203 which accommodates the corresponding second gear 24.
Further, referring to fig. 1 to 8, in the present embodiment, in order to provide power to the field core 15 and the motor 17, the power supply unit 16 includes a battery 25 and a protection cylinder 26; the protection cylinder 26 is connected to the carrier 20, and the outer cylinder 14 and the protection cylinder 26 are connected to both ends of the carrier 20 along the axial direction of the outer cylinder 14;
the motor 17 and the battery 25 are accommodated in the protective cylinder 26; the battery 25 is electrically connected to the motor 17 and the field core 15; the protective sleeve 26 is used in connection with a drill rod. The outer periphery of the protective cylinder 26 is provided with a plurality of drain holes 261 around the axis thereof. Specifically, the plurality of drainage holes 261 may be distributed in a plurality of rows along the axis of the protective cylinder 26, and each row is uniformly provided with 4 to 8 drainage holes 261 in the circumferential direction.
In order to improve the use efficiency of the horizontal well electromagnetic overshot 10, in this embodiment, the horizontal well electromagnetic overshot 10 further includes a power generation assembly 27, and the power generation assembly 27 is electrically connected to the battery 25;
the power generation assembly 27 comprises a generator 28, a turbine rotor 29 and a turbine stator 30; the generator 28 is accommodated in the protective cylinder 26; the turbine stator 30 is connected with the protective cylinder 26; the turbine rotor 29 is connected with an external drilling fluid pipe and is in transmission connection with an input shaft of the generator 28, and the turbine rotor 29 is used for rotating under the action of the drilling fluid so as to drive the generator 28 to generate electricity.
Thus, the horizontal well electromagnetic overshot 10 can generate power using a high-speed drilling fluid, and further, can generate power using the power generation unit 27 to supply electric power to the field core 15 and the motor 17 or to store the electric power in the battery 25.
Further, referring to fig. 1 to 8, in the present embodiment, the horizontal well electromagnetic overshot 10 further includes a tension and compression sensor 31 and a sealing ring 32; one end of the field core 15 facing the carrier 20 is connected to the tension/compression sensor 31, and a seal ring 32 is provided at the connection between the field core 15 and the tension/compression sensor 31. Specifically, a thread for screwing the tension/compression sensor 31 is provided on one end of the field core 15 facing the carrier 20, and a seal ring 32 is provided between contact surfaces of the two to ensure sealing between the inside of the field core 15 and the tension/compression sensor 31.
Referring to fig. 1 to 8, in the present embodiment, the horizontal well electromagnetic overshot 10 further includes a metal detecting unit 33, and the metal detecting unit 33 is used for detecting metal materials outside the outer cylinder 14. The metal detecting unit 33 may be an underwater camera, an infrared camera or a metal sensor, and is intended to detect the accumulation of metal materials outside the outer cylinder 14. In the present embodiment, the metal detection unit 33 employs a plurality of underwater cameras or infrared cameras disposed on the outer peripheral surface of the protection cylinder 26 around the axis thereof.
In this embodiment, the outer circumferential surface of the outer cylinder 14 is provided with a plurality of through holes 141; the plurality of through holes 141 are provided around the axial direction of the outer cylinder 14. The through holes 141 are uniformly distributed around the axis of the outer cylinder 14, and the central angle of two adjacent through holes 141 relative to the axis of the outer cylinder 14 is 30-90 degrees; the plurality of through holes 141 are each for allowing a liquid flow to exit the outer cylinder 14.
Based on the above, referring to fig. 1 to 8, it should be further noted that in the present embodiment, the gear rack 20 is tapered, and the connection between the outer cylinder 14 and the material collecting cylinder 34, the connection between the outer cylinder 14 and the gear rack 20, the connection between the field core 15 and the gear rack 20, the connection between the gear rack 20 and the protection cylinder 26, and the connection between the field core 15 and the tension/compression sensor 31 can all adopt a threaded connection or a bolt connection, so that a corresponding threaded connection or bolt connection structure can be provided at the butt joint of the above structures, which is not described again.
Referring to fig. 1 to 8, the horizontal well electromagnetic overshot 10 includes the following steps:
connecting the power generation assembly 27 of the horizontal well electromagnetic overshot 10 with drilling fluid and connecting the protective sleeve 26 with drill pipe to be run into the well by movement of the drill pipe;
acquiring an image outside the outer cylinder 14 through the metal detection unit 33, and determining the working states of the excitation iron core 15 and the motor 17 according to image analysis;
according to image analysis, when the excitation iron core 15 is adjusted to be in a working state, the excitation iron core 15 is in an electrically conducting state, and a magnetic field for adsorbing metal materials is generated, so that surrounding scrap irons and metal falling objects are adsorbed; at this time, the horizontal well electromagnetic overshot 10 can drive the excitation iron core 15 to generate a magnetic field for adsorbing the metal material by using the electric energy of the battery 25; alternatively, the high-speed drilling fluid is used for generating electricity through the electricity generating assembly 27, and the generated electric energy can be supplied to the field core 15 or the motor 17 and also can be stored in the battery 25;
when the amount of the adsorbate on the surface of the field core 15 reaches a certain amount, the motor 17 starts to work, so that the piston 18 moves from one end away from the material collecting piece 12 to one end close to the material collecting piece 12, and the adsorbate on the surface of the field core 15 is pushed into the material collecting piece 12;
when the metal material moves towards the direction of the material collecting part 12 under the action of the piston 18, the collected scrap iron and metal falling objects can be firmly adsorbed by the magnet 35 in the material collecting barrel 34, and are prevented from flowing out along with liquid flow;
the horizontal well electromagnetic salvage device 10 is lifted to the ground along with the drill rod, the material collecting piece 12 at the bottom is screwed out to clean adsorbates in the horizontal well electromagnetic salvage device, the material collecting piece 12 is installed after cleaning is completed, and the horizontal well electromagnetic salvage device is used for the next time.
In summary, referring to fig. 1 to 8, the horizontal well electromagnetic overshot 10 has the following advantages:
the horizontal well electromagnetic salvage device 10 can utilize high-speed drilling fluid to drive the generator 28 to generate electricity through the turbine rotor 29, and the generated electric energy can be supplied to the excitation iron core 15 to generate strong magnetic force, so that a large amount of scrap iron and falling objects can be adsorbed; moreover, the metal detection unit 33 is installed on the horizontal well electromagnetic overshot 10, so that the deposition position of falling objects and the amount of the absorbed falling objects can be determined, the size and the switch of the magnetic force of the excitation iron core 15 are controlled, the steel appliances or the well wall are prevented from being absorbed in the process of going down the well, the absorbed objects can be concentrated in the collecting barrel 34 and are prevented from falling back into the well, the overshot process is full-automatic, the operation by ground personnel is not needed, the absorption amount is large, and the efficiency is high.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. The utility model provides a horizontal well electromagnetism overshot which characterized in that:
the horizontal well electromagnetic salvager comprises an electromagnetic assembly, a material collecting piece and a material pushing assembly;
the electromagnetic assembly comprises an outer cylinder, an excitation iron core and a power supply unit; the excitation iron core extends along the axial direction of the outer cylinder and is accommodated in the outer cylinder, the excitation iron core is electrically connected with the power supply unit, and the excitation iron core is used for forming a magnetic field for adsorbing metal materials in an electrically conductive state;
the collecting part is connected with the outer cylinder and is used for adsorbing the metal material;
the material pushing assembly is connected with the outer cylinder body; the material collecting component and the material pushing component are distributed at two ends of the outer cylinder body along the axial direction of the outer cylinder body; the pushing assembly is used for pushing the metal material adsorbed by the excitation iron core into the material collecting piece.
2. The horizontal well electromagnetic overshot of claim 1, characterized in that:
the pushing assembly comprises a motor, a piston and a transmission unit;
the motor is connected with the outer cylinder body and is electrically connected with the power supply unit; the piston is sleeved on the excitation iron core and is connected with the outer cylinder body in a sliding manner along the axial direction of the outer cylinder body; the transmission unit is in transmission connection with the motor and the piston;
the motor is used for driving the piston to move relative to the excitation iron core through the transmission unit so as to push the metal material adsorbed on the outer peripheral surface of the excitation iron core to the material collecting piece.
3. The horizontal well electromagnetic overshot of claim 2, characterized in that:
the transmission unit comprises a gear rack, at least one transmission shaft and at least one transmission wheel;
the gear carrier is connected with the outer cylinder, and the gear carrier and the material collecting pieces are distributed at two ends of the outer cylinder in the axial direction; one end of the excitation iron core, which is far away from the collecting piece, is connected with the gear rack; the motor is connected with the gear rack; the power supply unit is connected with the gear rack; the gear rack and one end of the excitation iron core connected with the gear rack are both provided with a channel for the transmission shaft to pass through;
the transmission shaft is connected with the piston and extends along the axial direction of the outer cylinder body;
the transmission gear is rotatably connected with the gear rack, is sleeved on the transmission shaft and is in threaded connection with the transmission shaft; the transmission gear is in transmission connection with an output shaft of the motor;
the motor is used for driving the transmission gear to rotate relative to the gear carrier so as to drive the transmission shaft to reciprocate along the axis of the outer cylinder body, and further drive the piston to reciprocate along the axis of the outer cylinder body.
4. The horizontal well electromagnetic overshot of claim 3, characterized in that:
the power supply unit comprises a battery and a protective barrel;
the protection cylinder is connected with the gear rack, and the outer cylinder and the protection cylinder are respectively connected to two ends of the gear rack along the axial direction of the outer cylinder;
the motor and the battery are accommodated in the protection barrel; the battery is electrically connected with the motor and the excitation iron core; the protection barrel is used for being connected with the drill rod.
5. The horizontal well electromagnetic overshot of claim 4, characterized in that:
the periphery of the protection cylinder is provided with a plurality of drain holes around the axis of the protection cylinder.
6. The horizontal well electromagnetic overshot of claim 4, characterized in that:
the horizontal well electromagnetic salvager also comprises a power generation assembly, and the power generation assembly is electrically connected with the battery;
the power generation assembly comprises a generator, a turbine rotor and a turbine stator; the generator is accommodated in the protection cylinder; the turbine stator is connected with the protective barrel; the turbine rotor is communicated with an external drilling fluid pipe and is in transmission connection with an input shaft of the generator, and the turbine rotor is used for rotating under the action of the drilling fluid so as to drive the generator to generate electricity.
7. The horizontal well electromagnetic overshot of claim 3, characterized in that:
the horizontal well electromagnetic salvage device further comprises a tension and compression sensor and a sealing ring;
one end of the excitation iron core facing the gear rack is connected with the tension and compression sensor, and the sealing ring is arranged at the joint of the excitation iron core and the tension and compression sensor.
8. The horizontal well electromagnetic overshot of any one of claims 1 to 7, characterized in that:
the horizontal well electromagnetic salvage device further comprises a metal detection unit, and the metal detection unit is used for detecting the metal material outside the outer cylinder body.
9. The horizontal well electromagnetic overshot of any one of claims 1-7, characterized by:
the outer peripheral surface of the outer cylinder body is provided with a plurality of through holes; the through holes are arranged around the axis direction of the outer cylinder body.
10. The horizontal well electromagnetic overshot of any one of claims 1-7, characterized by:
the material collecting piece comprises a material collecting barrel and a plurality of magnets;
the material collecting barrel is connected and conducted with the outer barrel, and the magnets are distributed on the inner peripheral wall of the material collecting barrel around the axis of the outer barrel.
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| CN202210254908.XA CN114704220B (en) | 2022-03-15 | 2022-03-15 | Electromagnetic fisher for horizontal well |
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| CN202210254908.XA CN114704220B (en) | 2022-03-15 | 2022-03-15 | Electromagnetic fisher for horizontal well |
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|---|---|
| CN114704220B (en) | 2023-07-18 |
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