An electric remote-controlled kelly rod pulling device and a method of using the same

Abstract

The present invention provides an electric remote control square drill rod pulling device and a method for using the same. The device includes a remote control motor, a support rod, a direction-changing pulley group, a steel wire rope and a pier seat. The direction-changing pulley group includes at least a first pulley, a second pulley and a third pulley. One end of the support rod is movably hinged with an end of the top of the pier seat near the rat hole. The other end of the support rod is fixed with a first pulley. The end of the top of the pier seat away from the rat hole has a local outward extension section. The second pulley is fixed on the extension section. The third pulley is fixed on the drilling table. One end of the steel wire rope is connected to the remote control motor, and the other end is connected to the square drill rod after being wound by the direction-changing pulley group. The present invention forms a set of direction-changing mechanisms by cooperating with the steel wire rope, a group of direction-changing pulleys and a support rod. The horizontal pulling force required for pulling the square drill rod is transmitted from the motor to the square drill rod. Only one person at the wellhead needs to operate the remote control to safely and smoothly control the square drill rod to enter and exit the rat hole without human intervention.

Description

Technical Field

[0001] The invention belongs to the technical field of drilling engineering machinery, and in particular relates to an electric remote-controlled kelly rod pulling device and a use method thereof. Background Art

[0002] During the drilling operation in the oil field, various working conditions such as tripping and drilling need to be frequently switched. Especially when switching between drilling and tripping, the square drill rod needs to be pulled into the rat hole. At present, the square drill rod is manually pulled into the rat hole by using a drill rod hook. Because the rat hole is at a certain distance from the turntable, the lower end of the square drill rod is suspended in the air, and the top end is connected to the traveling block. During the manual pulling of the square drill rod, the square drill rod tilts, forming a pulling force toward the center of the drilling platform in the opposite direction to the manual pulling. Usually, 3-4 people use all their strength to pull the square drill rod into the rat hole. When there are few people, people may be pulled back to the turntable of the drilling platform by the reverse pulling force of the square drill rod, and even people may be injured by the swing of the suspended square drill rod.

[0003] In recent years, a drilling square drill rod entering rathole device (application number CN201620523180.6) using a pneumatic winch as a power source has appeared. It is composed of a square drill rod, a rat hole, a rope, a rat hole fixed pulley, a pneumatic winch pulley, and a pneumatic winch. One end of the rope is connected to the pneumatic winch, and the other end is connected to the square drill rod. The middle of the rope passes through the rat hole fixed pulley and the pneumatic winch pulley; the rat hole is fixed on the drilling table.

[0004] Although the above device solves the heavy and high-risk operation of manually pushing the square drill rod in and out of the rat hole, it is difficult to install and disassemble, occupies the drilling platform area, and in some emergency situations, it will affect the escape route of the fitter. Summary of the invention

[0005] The purpose of the embodiments of the present invention is to provide an electric remote-controlled kelly rod pulling device and a method of using the same to overcome the above technical defects.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0007] An electric remote-controlled square drill rod pulling device, the device at least comprises a remote-controlled motor, a support rod, a direction-changing pulley group, a wire rope and a pier seat, the pier seat is arranged on a drilling table, the direction-changing pulley group at least comprises a first pulley, a second pulley and a third pulley, one end of the support rod is rotatably connected to an end of the top of the pier seat close to a rat hole, the other end of the support rod is fixedly connected to the first pulley, the end of the top of the pier seat away from the rat hole has a local outward extension section, the second pulley is fixed to the local outward extension section of the top of the pier seat, and the third pulley is fixed to the drilling table; one end of the wire rope is connected to the remote-controlled motor, and the other end of the wire rope is connected to the square drill rod after passing through the third pulley, the second pulley and the first pulley in sequence.

[0008] Furthermore, the device also includes a remote controller, which controls the remote control motor to rotate forward or reverse.

[0009] Preferably, the remote control motor is installed at the farthest corner of the drilling floor.

[0010] Furthermore, the change-of-direction pulley group also includes a fourth pulley vertically fixed on the drilling table, and the wire rope is connected in sequence through the remote control motor, the fourth pulley and the third pulley to form a 90-degree angle on the drilling table, and the third pulley and the second pulley are located on the same vertical line.

[0011] Preferably, a first steel wire rope sleeve is sleeved on the steel wire rope between the remote control motor and the fourth pulley, and a second steel wire rope sleeve is sleeved on the steel wire rope between the fourth pulley and the third pulley.

[0012] Preferably, the support rod is movably hinged to the top outer side of the pier seat through a first pin shaft and rotates around the hinged end with the pier seat; a threaded hole is opened at one end of the support rod close to the pier seat, a bolt is installed in the through hole, a nut aligned with the through hole is welded on the pier seat, the bolt and the nut are tightened together to lock the support rod in a horizontal state on the outside of the pier seat; when the support rod needs to be flipped over and recovered to the pier seat, it is only necessary to loosen and pull out the bolt.

[0013] The support rod is movably hinged to the top outer side of the pier seat through a second pin shaft, and rotates around the hinged end with the pier seat; a groove is arranged at a preset position on the side wall of the pier seat, and a pull rod for controlling the degree of flipping is arranged between the support rod and the pier seat, and the pull rod can slide along the groove; when the pull rod slides up to the top of the groove, the support rod flips downward 90 degrees through the pin shaft and is in a folded and bent state; when the pull rod slides down to the bottom of the groove, the support rod flips upward through the pin shaft, and is fully unfolded to a horizontal position under the upward pulling force of the operator, at which time the pull rod locks the support rod and the pier seat.

[0014] Preferably, the remote control motor is a 0-20 m / min adjustable speed motor.

[0015] A method for pulling a kelly into and out of a rat hole using an electric remote-controlled kelly pulling device comprises the following steps:

[0016] S001: Connect one end of the wire rope to the remote control motor, and the other end of the wire rope is wound around the square drill rod through the change-direction pulley block;

[0017] S002: The operator turns on the remote control switch, the remote control motor rotates, and the wire rope pulls the kelly from the wellhead to the top of the rat hole through the action of the reversing pulley block;

[0018] S003: When the square drill rod is aligned with the rat hole opening, the operator turns off the remote control switch, the remote control motor stops rotating, and the driller lowers the square drill rod to enter the rat hole;

[0019] S004: When the square drill rod comes out of the rat hole, in order to avoid swinging and hitting the wellhead or personnel, use the same method to operate in reverse and control the square drill rod to move to the wellhead.

[0020] The beneficial effects of the present invention are as follows:

[0021] 1. The present invention uses a remote-controlled forward and reverse motor as a power source, and forms a set of direction-changing mechanisms through the cooperation of a steel wire rope, a set of direction-changing pulleys and a support rod. The horizontal pulling force required to pull the square drill rod is transmitted from the motor to the square drill rod, thereby safely and smoothly controlling the square drill rod to enter and exit the rat hole.

[0022] 2. The support rod of the present invention can be extended horizontally and fixed when in use; after use, it can be folded and recovered, so as not to occupy any drilling platform space.

[0023] 3. The remote control motor of the present invention is installed at the farthest corner of the drilling platform, so it will not affect the traffic on the drilling platform.

[0024] 4. The direction-changing pulley block of the present invention realizes the required direction-changing requirement of the wire rope by appropriately placing it vertically or horizontally.

[0025] 5. The present invention designs a power-assisting device that replaces manual labor in pushing and pulling the square drill rod in and out of the rat hole. It not only has a simple structure and accurate positioning, but can also greatly reduce the labor intensity of drillers when pushing and pulling the square drill rod in and out of the rat hole. It also has the advantages of safe, convenient, labor-saving and high efficiency in operation.

[0026] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 It is a structural schematic diagram of an electric remote-controlled kelly rod pulling and delivering device;

[0029] Figure 2 It is a top view of the electric remote-controlled kelly rod pulling device;

[0030] Figure 3 Schematic diagram of the folding of the support rod.

[0031] Description of reference numerals:

[0032] 1. Remote control motor; 2. Remote control; 3. Support rod; 4. Direction-changing pulley block; 5. Wire rope; 6. Pier seat; 3.1. Second pin shaft; 3.2. Pull rod; 4.1. First pulley; 4.2. Second pulley; 4.3. Third pulley; 4.4. Fourth pulley; 6.1. Groove. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] First embodiment

[0035] The first embodiment of the present invention relates to an electric remote-controlled kelly pulling device, such as Figure 1 , Figure 2 As shown, it at least includes a remote control motor 1, a support rod 3, a change-direction pulley block 4, a wire rope 5 and a pier seat 6. The pier seat 6 is arranged on the drilling table. The change-direction pulley block 4 at least includes a first pulley 4.1, a second pulley 4.2 and a third pulley 4.3. One end of the support rod 3 is rotatably connected to the end of the top of the pier seat 6 close to the rat hole, and the other end of the support rod 3 is fixedly connected to the first pulley 4.1. The end of the top of the pier seat 6 away from the rat hole has a local outward extension section, the second pulley 4.2 is fixed on the local outward extension section of the top of the pier seat 6, and the third pulley 4.3 is fixed on the drilling table; one end of the wire rope 5 is connected to the remote control motor 1, and the other end of the wire rope 5 is connected to the square drill rod after passing through the third pulley 4.3, the second pulley 4.2 and the first pulley 4.1 in sequence.

[0036] This embodiment also protects a method for pulling a kelly into and out of a rat hole using an electric remote-controlled kelly pulling device, comprising the following steps:

[0037] S001: Connect one end of the wire rope 5 to the remote control motor 1, and fix the other end of the wire rope 5 to the kelly rod after passing through the direction-changing pulley block 4;

[0038] S002: When using the device, first make the support rod 3 horizontal, then turn on the remote control switch 2, and control the remote control motor 1 to rotate forward, tighten the wire rope 5, and then the wire rope 5 pulls the square drill rod from the wellhead position to the top of the rat hole through the action of the reversing pulley block 4;

[0039] S003: When the square drill rod is aligned with the rat hole, the operator turns off the remote control switch 2, the remote control motor 1 stops rotating, and the driller lowers the square drill rod into the rat hole;

[0040] S004: When the kelly is out of the rat hole, the remote control motor 1 is controlled to reverse through the remote control switch 2, and the wire rope 5 is loosened when the remote control motor 1 reverses, and the kelly is pulled out of the rat hole along with the wire rope 5 and moved to the wellhead;

[0041] S005: Fold and retract the support rod 3.

[0042] The invention forms a set of direction-changing mechanisms by cooperating a steel wire rope, a set of direction-changing pulleys and a support rod, so that the horizontal pulling force required for pulling the square drill rod is transmitted to the square drill rod by a motor. Only one person at the wellhead needs to operate the remote control to safely and smoothly control the square drill rod to enter and exit the rat hole without human intervention in the middle.

[0043] Second embodiment

[0044] This embodiment relates to an electric remote-controlled kelly rod pulling device, such as Figure 1As shown, it at least includes a remote control motor 1, a remote control 2, a support rod 3, a direction-changing pulley group 4, a wire rope 5 and a pier seat 6. Further, the direction-changing pulley group 4 includes a first pulley 4.1, a second pulley 4.2, a third pulley 4.3 and a fourth pulley 4.4. The pier seat 6 is arranged on the drilling table, one end of the support rod 3 is rotatably connected to the end of the top of the pier seat 6 close to the rat hole, and the other end of the support rod 3 is fixed with a first pulley 4.1 arranged in a horizontal state, and the first pulley 4.1 and the support rod 3 are located on the same horizontal line; the end of the top of the pier seat 6 away from the rat hole has a local outward extension section, and the second pulley 4.2 is vertically fixed to the local direction of the top of the pier seat 6. On the outer extension section, the third pulley 4.3 is vertically fixed on the drilling table, and the third pulley 4.3 and the second pulley 4.2 are located on the same vertical line; one end of the steel wire rope 5 is connected to the remote control motor 1, and the other end of the steel wire rope 5 is connected to the square drill rod after passing through the fourth pulley 4.4, the third pulley 4.3, the second pulley 4.2 and the first pulley 4.1 in sequence. Furthermore, the present invention uses the remote control motor as a power source, controls the remote control motor 1 to rotate forward or reverse through the remote controller 2, and forms a set of direction-changing mechanisms through the cooperation of the steel wire rope, the direction-changing pulley group and the support rod, so that the horizontal pulling force required to pull the square drill rod is transmitted from the motor to the square drill rod, thereby safely and smoothly controlling the square drill rod to enter and exit the rat hole.

[0045] In this embodiment, it is worth mentioning that the steel wire rope 5 is connected in sequence through the remote control motor 1, the fourth pulley and the third pulley 4.3 to form a first angle of 90 degrees on the drilling table; the change-of-direction pulley group is placed vertically or horizontally to achieve the required steel wire rope change-of-direction requirements.

[0046] Furthermore, a first wire rope sleeve is provided on the wire rope 5 between the remote control motor 1 and the fourth pulley 4.4, a second wire rope sleeve is provided on the wire rope 5 between the fourth pulley 4.4 and the third pulley 4.3, the remote control motor 1 is installed at the farthest corner of the drilling platform, and a wire rope sleeve is provided on the wire rope laid on the surface of the drilling platform, so that the passage of the drilling platform will not be affected.

[0047] Third embodiment

[0048] On the basis of the above implementation mode, as a preferred embodiment, the support rod 3 is movably hinged to the top outer side of the pier seat 6 through a first pin shaft, and rotates around the hinged end with the pier seat 6; a threaded hole is opened at one end of the support rod 3 close to the pier seat 6, a bolt is installed in the threaded hole, and a nut aligned with the threaded hole is welded on the top of the pier seat 6, and the bolt and the nut are tightened together to lock the support rod 3 horizontally on the outside of the pier seat 6; when the support rod 3 needs to be flipped over and recovered to the pier seat 6, the support rod 3 can be folded and flipped by simply loosening and pulling out the fastening bolt.

[0049] Fourth embodiment

[0050] Different from the third embodiment, as a preferred embodiment, Figure 3 As shown, the support rod 3 is movably hinged to the top outer side of the pier seat 6 through the second pin shaft 3.1, and rotates around the hinged end with the pier seat 6; a groove 6.1 is provided at a preset position of the side wall of the pier seat 6, and a pull rod 3.2 for controlling the flipping degree is provided between the support rod 3 and the pier seat 6, and the pull rod 3.2 can slide along the groove 6.1; when the pull rod slides up to the top of the groove 6.1, the support rod 3 is flipped downward 90 degrees through the second pin shaft 3.1 and is in a folded state; when the pull rod 3.2 slides down to the bottom of the groove 6.1, the support rod 3 is flipped upward through the second pin shaft 3.1, and is fully unfolded and in a folded state under the upward pulling force of the operator, at which time the pull rod 3.2 locks the support rod 3 and the pier seat 6.

[0051] It should be particularly noted that the above only lists some implementation methods for realizing the flipping and folding of the support rod 3. The present invention will not be limited to the implementation methods shown in this article. In the absence of conflict, technicians in this field can make simple modifications, equivalent changes and modifications to the above embodiments according to actual conditions, or combine the relevant technical features in the above examples with each other to achieve corresponding technical effects, which are all within the scope of the technical solution of the present invention. Specific descriptions of various combinations are not given here.

[0052] Sixth Embodiment

[0053] The present embodiment relates to an electric remote-controlled square drill rod pulling device, which includes a remote control motor 1, a remote control 2, a support rod 3, a direction-changing pulley group 4, a wire rope 5 and a pier seat 6. Further, the direction-changing pulley group 4 includes a first pulley 4.1, a second pulley 4.2, a third pulley 4.3 and a fourth pulley 4.4. The pier seat 6 is arranged on the drilling table, one end of the support rod 3 is rotatably connected to the end of the top of the pier seat 6 close to the rat hole, and the other end of the support rod 3 is fixedly connected to the first pulley 4.1, and the first pulley 4.1 and the support rod 3 are located on the same horizontal line; the top of the pier seat 6 is away from the rat hole. One end of the hole has a partial outward extension section, the second pulley 4.2 is vertically fixed on the partial outward extension section on the top of the pier 6, the third pulley 4.3 is vertically fixed on the drilling table, and the third pulley 4.3 and the second pulley 4.2 are located on the same vertical line; one end of the wire rope 5 is connected to the remote control motor 1, and the other end of the wire rope 5 is connected to the square drill rod after passing through the fourth pulley 4.4, the third pulley 4.3, the second pulley 4.2 and the first pulley 4.1 in sequence. Further, the remote controller 2 controls the remote control motor 1 to rotate forward or reverse. Preferably, the remote control motor 1 is a 0-20 m / min adjustable speed motor.

[0054] Furthermore, the present invention measures in advance the route of pulling the square drill rod to the rat hole, and achieves precise positioning by the length of the horizontal support rod 3, thereby ensuring that the square drill rod can accurately stay at the rat hole through this route without deviation.

[0055] This embodiment also protects a method for pulling a kelly into and out of a rat hole using an electric remote-controlled kelly pulling device, comprising the following steps:

[0056] S1: Install the remote control motor 1 at the farthest corner of the drilling platform, and fix the pier 6 on the drilling platform near the rat hole;

[0057] S2: A first pulley 4.1 is fixedly connected to the other end of the support rod 3 and is horizontally arranged. One end of the support rod 3 is hinged to one end of the top of the pier 6 close to the rat hole. A second pulley 4.2 is vertically arranged at the other end of the top of the pier 6 away from the rat hole. A third pulley 4.3 is vertically arranged on the drilling table below the second pulley 4.2.

[0058] S3: a fourth pulley 4.4 is arranged at a 90 degree angle formed between the remote control motor 1 and the third pulley 4.3, and is fixed vertically on the drilling table;

[0059] S4: Connect one end of the wire rope 5 to the remote control motor 1, and fix the other end of the wire rope 5 on the kelly after passing through the fourth pulley 4.4, the third pulley 4.3, the second pulley 4.2 and the first pulley 4.1 in sequence;

[0060] S5: When using the device of the present invention, the support rod 3 is firstly horizontalized, and then the remote control switch 2 is turned on, and the remote control motor 1 is controlled to rotate forward. When the remote control motor 1 rotates forward, the wire rope 5 is tightened, and the wire rope 5 is pulled from the wellhead position to the top of the rat hole by the action of the reversing pulley block 4;

[0061] S6: When the kelly is aligned with the rat hole, the operator turns off the remote control switch 2, the remote control motor 1 stops rotating, and the driller lowers the kelly into the rat hole;

[0062] S7: When the Kelly is out of the rat hole, the remote control motor 1 is controlled to reverse through the remote control switch 2, and the wire rope 5 is loosened when the remote control motor 1 reverses, and the Kelly is pulled out of the pile hole along with the wire rope 2 and moved to the wellhead;

[0063] S8: Fold and retract the support rod 3.

[0064] In summary, the present invention designs a power-assisting device that replaces manual labor in pushing and pulling the square drill rod in and out of the rat hole, which can smoothly pull the square drill rod into the rat hole within 30 seconds, without the need for manual intervention, does not occupy any drilling platform area and escape passage, and has no installation difficulties. The present invention is not only simple in structure and accurate in positioning, but can also greatly reduce the labor intensity of drilling workers when pushing and pulling the square drill rod in and out of the rat hole, and also has the advantages of safe, convenient, labor-saving, and efficient operation.

[0065] The parts not specifically described in the above embodiments belong to well-known components and common structures or common means in the technical field, and will not be described in detail here.

[0066] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0067] In addition, the terms “first, second…” are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0068] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

[0069] In the absence of conflicts, technicians in this field can combine the relevant technical features in the above examples according to actual conditions to achieve corresponding technical effects. The specific combinations are not described here one by one.

Claims

1. A method for using an electric remote-controlled kelly rod pulling device, characterized in that: The invention relates to an electric remote-controlled square drill rod pulling device, which at least comprises a remote-controlled motor, a support rod, a direction-changing pulley group, a steel wire rope and a pier seat. The pier seat is arranged on a drilling table. The direction-changing pulley group comprises a first pulley, a second pulley, a third pulley and a fourth pulley. One end of the support rod is rotatably connected to an end of the top of the pier seat near a rat hole. The other end of the support rod is fixed with a first pulley arranged in a horizontal state, and the first pulley and the support rod are located on the same horizontal line. The end of the top of the pier seat away from the rat hole has a local outward extension section, the second pulley is vertically fixed to the local outward extension section of the top of the pier seat, the third pulley is vertically fixed to the drilling table, and the third pulley and the second pulley are located on the same vertical line. One end of the steel wire rope is connected to the remote control motor, and the other end of the steel wire rope is connected to the kelly rod after passing through the fourth pulley, the third pulley, the second pulley and the first pulley in sequence; The steel wire rope is connected to the remote control motor, the fourth pulley and the third pulley in sequence to form a 90-degree angle on the drilling floor; The steel wire rope between the remote control motor and the fourth pulley is sleeved with a first steel wire rope sleeve, and the steel wire rope between the fourth pulley and the third pulley is sleeved with a second steel wire rope sleeve; The support rod is movably hinged to the top outer side of the pier seat through the first pin shaft or the second pin shaft, and rotates around the hinged end with the pier seat; When the support rod is hinged by the first pin, a threaded hole is opened at one end of the support rod close to the pier seat, a bolt is installed in the threaded hole, a nut aligned with the threaded hole is welded on the pier seat, the bolt and the nut are fastened together to lock the support rod in a horizontal state on the outside of the pier seat; when the support rod needs to be flipped and recovered to the pier seat, it is only necessary to loosen and pull out the bolt; When the support rod is hinged by the second pin, a groove is provided at a preset position of the side wall of the pier seat, and a pull rod for controlling the degree of flipping is provided between the support rod and the pier seat, and the pull rod can slide along the groove; when the pull rod slides up to the top of the groove, the support rod flips down 90 degrees through the second pin and is in a folded state; when the pull rod slides down to the bottom of the groove, the support rod flips upward through the second pin, and is fully unfolded and in a folded state under the upward pulling force of the operator, at which time the pull rod locks the support rod and the pier seat; The method of use comprises the following steps: S1: Install the remote control motor at the farthest corner of the drilling platform, and fix the pier on the drilling platform near the rat hole; S2: A first pulley arranged horizontally is fixedly connected to the other end of the support rod, one end of the support rod is hinged to one end of the top of the pier seat close to the rat hole, a second pulley is vertically arranged at the other end of the top of the pier seat away from the rat hole, and a third pulley is vertically arranged on the drilling table below the second pulley; S3: a fourth pulley is arranged at a 90 degree angle formed between the remote control motor and the third pulley, and is fixed vertically on the drilling table; S4: Connect one end of the wire rope to the remote control motor, and fix the other end of the wire rope on the kelly after passing through the fourth pulley, the third pulley, the second pulley and the first pulley in sequence; S5: When in use, first make the support rod horizontal, then turn on the remote control switch, and control the remote control motor to rotate forward. When the remote control motor rotates forward, tighten the wire rope, and the wire rope pulls the square drill rod from the wellhead position to the top of the rat hole through the action of the reversing pulley block; S6: When the square drill rod is aligned with the rat hole opening, the operator turns off the remote control switch, the remote control motor stops rotating, and the driller lowers the square drill rod to enter the rat hole; S7: When the Kelly is pulled out of the rat hole, the remote control motor is controlled to reverse through the remote control switch, and the wire rope is loosened when the remote control motor reverses. The Kelly is pulled out of the pile hole along with the wire rope and moved to the wellhead; S8: Fold and retract the support rod.

2. The method for using the electric remote-controlled kelly pulling device according to claim 1, characterized in that: The device also includes a remote controller, which controls the remote control motor to rotate forward or reverse.

3. The method for using the electric remote-controlled kelly rod pulling device according to claim 1, characterized in that: The remote control motor is installed at the farthest corner of the drilling floor.

4. The method for using the electric remote-controlled kelly rod pulling device according to claim 1, characterized in that: The remote control motor is a 0-20 m / min adjustable speed motor.

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