CN113187412A - Quick disconnecting device for drill rod - Google Patents
Quick disconnecting device for drill rod Download PDFInfo
- Publication number
- CN113187412A CN113187412A CN202110605932.9A CN202110605932A CN113187412A CN 113187412 A CN113187412 A CN 113187412A CN 202110605932 A CN202110605932 A CN 202110605932A CN 113187412 A CN113187412 A CN 113187412A
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- CN
- China
- Prior art keywords
- butt joint
- drill rod
- transition pipe
- rail
- track groove
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
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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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/046—Couplings; joints between rod or the like and bit or between rod and rod or the like with ribs, pins, or jaws, and complementary grooves or the like, e.g. bayonet catches
Abstract
The invention relates to the technical field of petroleum drill rod disconnecting and connecting devices and methods, in particular to a drill rod quick disconnecting and connecting device. The technical scheme is as follows: the middle part of the butt joint transition pipe is provided with a bulge, the outer wall of the middle lower part of the butt joint transition pipe is provided with a circle of butt joint rail, the butt joint rail is in fit connection with a butt joint cone body through a rail pin, and a disconnection spring is arranged below the bulge in the middle part of the butt joint transition pipe; the drill rod butt joint is arranged on the outer side of the butt joint cone, the top of the drill rod butt joint is matched with an inner protrusion containing a key sleeve at the upper end of the butt joint transition pipe through a torque transmission and pressing cap, and the top of the butt joint transition pipe is connected with a kelly bar. The beneficial effects are that: the whole device of the invention greatly shortens the construction period for a single well due to simple operation, and avoids reverse actions during tripping without reverse rotation of a shackle when a drill rod is added, thereby greatly prolonging the service life of the drilling machine.
Description
Technical Field
The invention relates to the technical field of petroleum drill rod disconnecting and connecting devices and methods, in particular to a drill rod quick disconnecting and connecting device.
Background
In the oil drilling engineering, a drill string is an important component of oil and gas drilling and production equipment, and specifically comprises a drill bit, a drill collar, a drill rod, a kelly and the like, wherein the drill rod is a basic component of the drill string and is mainly used for transmitting torque and conveying drilling fluid and is continuously connected with the drill rod in the drilling process so as to achieve the purpose of continuously deepening a borehole; the drill rod is divided into a common drill rod, a kelly rod, a weighted drill rod and other subdivision parts; the common drill stem is a main component of a drill stem, a kelly is connected on the common drill stem, a drill collar is connected below the common drill stem, the function of the common drill stem is to transmit torque so that a drill bit drills downwards to deepen a well, the kelly is positioned at the uppermost end of the drill stem, the main function of the common drill stem is to transmit torque and bear the weight of the drill stem during working, and a square or hexagonal kelly is commonly used; the weighted drill rod is a transition drill column section between a common drill rod and a drill collar, can effectively relieve the stress concentration of the transition section in the combination of the drill collar and the drill rod, provides the drill pressure and can effectively reduce the connection area and the outer diameter wear rate of the drill column and the well wall.
Because the difference of drilling depth, generally need go into many drilling rods and carry out the well drilling, the connection of current drilling rod, generally lift through the top that the rig drove the drilling rod, operate at drilling platform through many workers, dock the drilling rod, then, the hydraulic pressure tongs on the operation drilling platform, carry out clockwise corotation to the drilling rod and realize the connection of making up, realize the operation of breaking out through anticlockwise reversal, because current well depth reaches several kilometers, and the length of every drilling rod is common is three kinds, specifically is: 6.10-7.01 meters, 8.84-9.75 meters or 12.19-13.72 meters, so that the butt joint operation is required for dozens of times, the time for connecting the drill rod occupies most of the drilling operation time, and a plurality of operators on the drilling platform are easily injured by the drill rod, so that the safety accidents such as personnel injury are caused.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a drill rod quick disconnecting device, which omits the time of reversing and shackle by matching a butting cone body and a drill rod butting head, greatly improves the efficiency of the whole drilling process, simplifies the operation process, and reduces the accident rate in the drilling process.
The invention provides a quick drill rod disconnecting device, which adopts the technical scheme that: the drill pipe butt joint device comprises a butt joint transition pipe, a drill pipe butt joint, a butt joint cone, a rail pin, a disconnection spring and a torque transmission pressure cap, wherein a bulge is arranged in the middle of the butt joint transition pipe; the drill rod butt joint is arranged on the outer side of the butt joint cone, the top of the drill rod butt joint is matched with an inner protrusion containing a key sleeve at the upper end of the butt joint transition pipe through a torque transmission and pressing cap, and the top of the butt joint transition pipe is connected with a kelly bar.
Preferably, the track pin is installed in the swivel, a swivel pressure cap is arranged above the swivel, and the swivel and the track pin are connected to the upper end of the butted vertebral body through the swivel pressure cap.
Preferably, the drill rod butt joint comprises an upper cylindrical structure and a lower conical structure, wherein the lower conical structure is provided with a circle of strip-shaped grooves to form a claw shape; wherein, the inner wall of the upper end of the upper side cylindrical structure is provided with an internal thread which is connected with the torque transmission pressure cap.
Preferably, the docking cone comprises a conical structure body, a torque transmission supporting key, an upper joint and an external thread, wherein a circle of torque transmission supporting key is distributed on the outer wall of the conical structure body, the upper joint is arranged at the upper end of the conical structure body, and the external thread is arranged on the outer side of the upper joint.
Preferably, the torque transmission support key is a bar-shaped protrusion structure.
Preferably, the butt-joint rail comprises an upper rail and a lower rail, the upper rail is an upper rail groove with equal length, and the lower rail is formed by arranging two lower rail grooves with one longer length and one shorter length.
Preferably, one side of the upper rail groove is an upper vertical side, the other side of the upper rail groove is an upper inclined side, and the top of the upper rail groove is a groove formed by an arc-shaped structure.
Preferably, one side of the shorter lower track groove in the lower track grooves is a downward straight side, the other side of the shorter lower track groove is a lower inclined side, the bottom of the shorter lower track groove is a groove formed by an arc-shaped structure, and an angle formed by the downward straight side and the lower inclined side is positioned right below the middle part of the upper inclined side of the upper track groove.
Preferably, one side of the longer lower track groove in the lower track grooves is a downward-hanging straight side, the other side of the longer lower track groove is a lower oblique side, a strip-shaped track groove is additionally arranged at the lower part of the longer lower track groove, the bottom of the longer lower track groove is a groove formed by an arc-shaped structure, and an angle formed by the downward-hanging straight side and the lower oblique side is positioned right below the middle part of the upper oblique side of the upper track groove.
Preferably, the butt joint transition pipe comprises a butt joint transition pipe main body, a protrusion, a butt joint rail, a transition pipe upper joint, a transition pipe lower joint and an inner protrusion, wherein the upper end of the butt joint transition pipe main body is provided with an inner protrusion for accommodating the key sleeve, the outer wall of the middle lower part is provided with a circle of butt joint rail, the bottom of the butt joint transition pipe main body is provided with the transition pipe lower joint, and the top of the butt joint transition pipe main body is provided with the transition pipe upper joint.
Compared with the prior art, the invention has the following beneficial effects:
1. because the direct butt joint mode is adopted in the process of drilling, compared with the original screw thread rotation mode, the reverse shackle is omitted, the time for connecting the drill rod is greatly reduced, the efficiency of the whole drilling process is greatly improved, the operation process is simplified, and the safety accident rate of operators in the drilling process is greatly reduced due to the simplification of the operation process;
2. the drill rod butt joint is safe and reliable to lift, the rail pin is matched with the butt joint rail, when the drill rod is lifted, the rail pin is located at the lower rail of the butt joint rail, the butt joint cone moves downwards to enable the drill rod butt joint to be locked with the inner wall of the top end of the drill rod, and the drill rod can be lifted or rotated; when the drilling machine drives the drill rod to move downwards, the rail pin is positioned at the upper rail of the butt joint rail, the butt joint cone moves upwards, and the butt joint head of the drill rod can be loosened from the inner wall of the top end of the drill rod, so that the drill rod is separated from the drill rod without reversing, and reversing shackles are omitted; the operation of the hydraulic tong at one time is also reduced, and the probability of personal injury is reduced;
3. the butt joint track can also adopt a design of two long lower tracks and one short lower track, provides a correction opportunity for misoperation in the tripping process of a drilling pipe column, and simultaneously provides guarantee for prolonging the service life of a drill rod buckle during drilling due to the fact that the butt joint cone is additionally provided with torque support;
4. the torque transmission and pressing cap is matched with the inner protrusion on the upper side of the butt joint transition pipe, so that the torque of the butt joint transition pipe can be transmitted to the drill rod butt joint, and the drill rod can be smoothly driven to rotate when the hydraulic tong rotates;
the whole process of the invention has simple operation, the construction period of a single well is greatly shortened, and when the drill rod is added, reverse actions such as tripping and the like are avoided without reverse rotation of a shackle, so the service life of the drilling machine is greatly prolonged.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic illustration of the construction of a butt-jointed transition pipe;
FIG. 3 is a schematic view of the A-A structure of FIG. 2;
FIG. 4 is an expanded schematic view of the docking track of FIG. 2;
FIG. 5 is a schematic view of a butt joint of drill pipes;
FIG. 6 is a bottom view of the pipe butt joint;
FIG. 7 is a schematic view of the structure of the butted vertebral bodies;
FIG. 8 is a side view of an abutting vertebral body;
FIG. 9 is a schematic view of the use of the quick disconnect of the drill pipe;
in the upper diagram: the drilling machine comprises a drill bit 1, a supporting elevator 2, hydraulic fixing clamps 3, a disconnecting device 4, a drilling machine platform 5, a drilling machine rotary table 6, a drilling machine 7, a square drill rod 8, a butt joint transition pipe 4.1, a drill rod butt joint 4.2, a butt joint cone 4.3, a swivel 4.4, a track pin 4.5, a swivel pressure cap 4.6, a disconnecting spring 4.7 and a torque transmission pressure cap 4.8;
the structure comprises an upper cylindrical structure 4.2.1, a lower conical structure 4.2.2, a strip-shaped groove 4.2.3, an internal thread 4.2.4, a conical structure body 4.3.1, a torque transmission support key 4.3.2, an upper joint 4.3.3, an external thread 4.3.4, a butt joint transition pipe body 4.1.1, a bulge 4.1.2, a butt joint rail 4.1.3, a transition pipe upper joint 4.1.4, a transition pipe lower joint 4.1.5 and an internal bulge 4.1.6.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
The track pin 4.5 is arranged in the rotating ring 4.4, a rotating ring pressing cap 4.6 is arranged above the rotating ring 4.4, and the rotating ring 4.4 and the track pin 4.5 are connected to the upper end of the butt joint vertebral body 4.3 through the rotating ring pressing cap 4.6.
Referring to fig. 2, the butt joint transition pipe 4.1 comprises a butt joint transition pipe main body 4.1.1, a protrusion 4.1.2, a butt joint rail 4.1.3, a transition pipe upper joint 4.1.4, a transition pipe lower joint 4.1.5 and an inner protrusion 4.1.6, the upper end of the butt joint transition pipe main body 4.1.1 is provided with the inner protrusion 4.1.6 for accommodating a key sleeve, the outer wall of the middle lower part is provided with a circle of butt joint rail 4.1.3, the bottom is provided with the transition pipe lower joint 4.1.5, and the top is provided with the transition pipe upper joint 4.1.4.
Referring to fig. 5 and 6, the drill pipe butt joint 4.2 of the invention comprises an upper cylindrical structure 4.2.1 and a lower conical structure 4.2.2, wherein the lower conical structure 4.2.2 is provided with a circle of strip-shaped grooves 4.2.3, and the whole body is in a claw shape; wherein, the inner wall of the upper end of the upper cylindrical structure 4.2.1 is provided with an internal thread 4.2.4, and is connected with a torque transmission pressure cap 4.8 through the internal thread 4.2.4.
Referring to fig. 7 and 8, the docking cone 4.3 of the present invention includes a conical structure body 4.3.1, a torque transmission support key 4.3.2, an upper joint 4.3.3 and an external thread 4.3.4, wherein a circle of torque transmission support key 4.3.2 is distributed on the outer wall of the conical structure body 4.3.1, the upper joint 4.3.3 is arranged at the upper end of the conical structure body 4.3.1, and the external thread 4.3.4 is arranged at the outer side of the upper joint 4.3.3.
The torque transmission support key 4.3.2 is a strip-shaped convex structure.
Referring to fig. 2 and 4, the butt joint rail 4.1.3 of the invention comprises an upper rail and a lower rail, wherein the upper rail is an upper rail groove with equal length, the lower rail is formed by arranging two lower rail grooves with one longer length and one shorter length, the design adopts the design of the lower rail groove with one longer length and one shorter length, a correction opportunity is provided for 'misoperation' of a drilling string in the lifting and lowering processes, and meanwhile, the torque transmission support key 4.3.2 additionally arranged on a butt joint cone body also provides guarantee for prolonging the service life of a drill pipe fastener in drilling.
One side of the upper track groove is an upper vertical side, the other side of the upper track groove is an upper bevel edge, and the top of the upper track groove is a groove formed by arc structures.
One side of the shorter lower track groove in the lower track grooves is a drooping straight edge, the other side of the shorter lower track groove is a lower inclined edge, the bottom of the lower track groove is a groove formed by an arc-shaped structure, and an angle formed by the drooping straight edge and the lower inclined edge is positioned right below the middle part of the upper inclined edge of the upper track groove.
One side of a longer lower track groove in the lower track grooves is a drooping straight edge, the other side of the longer lower track groove is a lower inclined edge, a strip-shaped track groove is additionally arranged at the lower part of the longer lower track groove, the bottom of the longer lower track groove is a groove formed by an arc-shaped structure, and an angle formed by the drooping straight edge and the lower inclined edge is positioned right below the middle part of the upper inclined edge of the upper track groove.
The sealing rubber ring on the butt joint transition pipe 4.1 can be seen in the whole process, which is beneficial to the process safety, namely the well washing process of the whole process is safe, simple in maintenance and convenient to use.
The use method of the quick drill rod disconnection device comprises the following steps:
firstly, the assembling process of the quick drill rod disconnecting device is as follows:
installing a track pin 4.5 in a rotating ring 4.4, arranging a rotating ring pressure cap 4.6 above the rotating ring 4.4, and connecting the rotating ring 4.4 and the track pin 4.5 to the upper end of a butt-joint vertebral body 4.3 through the rotating ring pressure cap 4.6; then, a disconnecting spring 4.7 and a butt joint cone 4.3 are sleeved from the lower part of the butt joint transition pipe 4.1, the upper part of the disconnecting spring 4.7 is contacted with a bulge 4.1.2, the lower part of the disconnecting spring is contacted with a rotating ring pressure cap 4.6, and a track pin 4.5 is inserted into a butt joint track 4.1.3 on the outer wall of the butt joint transition pipe 4.1; then the drill rod butt joint 4.2 is sleeved along the lower part of the butt joint transition pipe 4.1, so that the butt joint cone 4.3 is positioned in a gap between the butt joint transition pipe 4.1 and the drill rod butt joint 4.2, the top of the butt joint cone 4.3 is connected through a torque transmission pressure cap 4.8, the torque transmission pressure cap 4.8 is matched with an inner bulge 4.1.6 on the upper side of the butt joint transition pipe 4.1, and finally, the top end of the butt joint transition pipe 4.1 is connected and fixed with the kelly bar 8;
secondly, the installation and the use process of the quick drill rod disconnecting and connecting device are as follows:
during installation, a drilling machine 7 is arranged above a drilling machine platform 5, a drilling machine rotary table 6 is arranged on the drilling machine platform 5, the upper end of a square drill rod 8 is connected with the drilling machine 7, the lower end of the square drill rod 8 penetrates through the drilling machine rotary table 6 to be connected with a drill rod quick disconnecting device, and the lower end of the drill rod quick disconnecting device is connected to a drill bit 1 at the bottom through more than one drill rod;
when the quick disconnecting device is used, firstly, the drill 7 pulls the kelly bar 8 and the drill rod quick disconnecting device to move downwards, so that the butt joint transition pipe 4.1 and the drill rod butt joint 4.2 are inserted into the top end inner cavity of the first drill rod, at the moment, the butt joint cone 4.3 is pushed to move upwards, the track pin 4.5 is positioned at the upper track of the butt joint track 4.1.3, and the disconnecting spring 4.7 is extruded to store energy; secondly, operating the drilling machine 7 to lift up, driving the butt joint transition pipe 4.1 and the drill rod butt joint 4.2 to move upwards by the kelly bar 8, and at the moment, moving the butt joint cone 4.3 downwards under the combined action of the disconnecting spring 4.7 and gravity, and enabling the rail pin 4.5 to enter the lower rail of the butt joint rail 4.1.3, so that the butt joint cone 4.3 moves downwards to push the drill rod butt joint 4.2 to lock the top end of a first drill rod; continuously lifting the kelly 8 and the first drill rod through the drilling machine 7, and butting a male buckle at the lower end of the first drill rod with a female buckle at the top of the drill rod to be connected at the wellhead; thirdly, moving and starting a drilling machine turntable 6, driving a square drill rod 8 to rotate clockwise and downwards, driving a butt joint transition pipe 4.1 to rotate by the square drill rod 8, and simultaneously driving a drill rod butt joint head 4.2 to synchronously rotate by matching the butt joint transition pipe 4.1 with a torque transmission cap 4.8 through an inner bulge 4.1.6 on the upper side, so that a first drill rod is in quick threaded connection with a drill rod to be connected at a well head; fourthly, the drilling machine 7 applies force downwards to feed the connected first drill rod downwards, the first drill rod is placed into the well mouth through the slips until the first drill rod is placed into the preset position, the outer wall of the upper end of the first drill rod is supported and fixed through the slip, then the drilling machine 7 continues applying force downwards again, the track pin 4.5 enters the upper track of the butt joint track 4.1.3, the butt joint transition pipe 4.1 and the drill rod butt joint 4.2 are separated from the first drill rod quickly, then the drilling machine 7 pulls the kelly 8 and the drill rod quick disconnecting device to move away, the next drill rod is connected continuously, the operation is circulated in sequence, and a plurality of drill rods are connected quickly.
The difference from the embodiment 1 is that: the lower rail is formed by arranging a long lower rail groove and a short lower rail groove, or a special rail groove is improved and designed according to the needs of the field.
One side of the shorter lower track groove in the lower track grooves is a downward straight edge, the other side of the shorter lower track groove is a lower inclined edge, the bottom of the lower track groove is a groove formed by an arc-shaped structure, and an angle formed by the downward straight edge and the lower inclined edge is positioned right below the middle part of the upper inclined edge of the upper track groove.
One side of a longer lower track groove in the lower track grooves is a drooping straight edge, the other side of the longer lower track groove is a lower inclined edge, a strip-shaped track groove is additionally arranged at the lower part of the longer lower track groove, the bottom of the longer lower track groove is a groove formed by an arc-shaped structure, and an angle formed by the drooping straight edge and the lower inclined edge is positioned right below the middle part of the upper inclined edge of the upper track groove.
The difference from the embodiment 1 is that: the gap between the drill rod butt joint 4.2 and the butt transition pipe 4.1 is enlarged, and the top end of the drill rod can be contained, so that the drill rod butt joint 4.2 and the butt cone 4.3 are locked to clamp the top end of the drill rod.
The use method of the quick drill rod disconnection device comprises the following steps:
during installation, a drilling machine 7 is arranged above a drilling machine platform 5, a drilling machine rotary table 6 is arranged on the drilling machine platform 5, the upper end of a square drill rod 8 is connected with the drilling machine 7, the lower end of the square drill rod 8 penetrates through the drilling machine rotary table 6 to be connected with a drill rod quick disconnecting device, and the lower end of the drill rod quick disconnecting device is connected to a drill bit 1 at the bottom through more than one drill rod;
when the device is used, firstly, the drill 7 pulls the kelly bar 8 and the drill rod quick disconnecting device to move downwards, so that the butt joint transition pipe 4.1 is inserted into the top end of a first drill rod, at the moment, the butt joint cone 4.3 is pushed by the drill rod to move upwards, the track pin 4.5 is positioned at the upper track of the butt joint track 4.1.3, the disconnecting spring 4.7 is extruded to store energy, and the top end of the first drill rod is inserted between the butt joint transition pipe 4.1 and the drill rod butt joint 4.2; secondly, operating the drilling machine 7 to lift up, driving the butt joint transition pipe 4.1 and the drill rod butt joint 4.2 to move upwards by the kelly bar 8, at the moment, moving the butt joint cone 4.3 downwards under the combined action of the disconnection spring 4.7 and gravity, and enabling the rail pin 4.5 to enter the lower rail of the butt joint rail 4.1.3, so that the butt joint cone 4.3 locks the top end of the first drill rod; continuously lifting the first drill rod through the drilling machine 7 to enable a male buckle at the lower end of the first drill rod to be in butt joint with a female buckle at the top of the drill rod to be connected at the wellhead; thirdly, the drilling machine 7 applies force downwards to feed the connected first drill rod downwards until the first drill rod is lowered to a preset position, the first drill rod is placed into a wellhead support through a slip to fix the outer wall of the upper end of the first drill rod, then the drilling machine 7 continues to apply force downwards, the track pin 4.5 enters the upper track of the butt joint track 4.1.3, the butt joint transition pipe 4.1 and the drill rod butt joint 4.2 are quickly separated from the first drill rod, then the drilling machine 7 pulls the square drill rod 8 and the drill rod quick disconnecting device to move away, the next drill rod is continuously connected, and the next drill rod is sequentially and circularly operated to quickly connect a plurality of drill rods.
The above description is only a few of the preferred embodiments of the present invention, and any person skilled in the art may modify the above-described embodiments or modify them into equivalent ones. Therefore, the technical solution according to the present invention is subject to corresponding simple modifications or equivalent changes, as far as the scope of the present invention is claimed.
Claims (10)
1. A quick disconnection device of a drill rod is characterized in that: the butt joint device comprises a butt joint transition pipe (4.1), a drill rod butt joint (4.2), a butt joint cone body (4.3), a track pin (4.5), a disconnection spring (4.7) and a torque transmission pressure cap (4.8), wherein a bulge (4.1.2) is arranged in the middle of the butt joint transition pipe (4.1), a circle of butt joint track (4.1.3) is arranged on the outer wall of the middle lower part of the butt joint transition pipe (4.1), the butt joint track (4.1.3) is connected with the butt joint cone body (4.3) in a matched mode through the track pin (4.5), and the disconnection spring (4.7) is arranged below the bulge in the middle of the butt joint transition pipe (4.1); a drill rod butt joint (4.2) is arranged on the outer side of the butt joint cone body (4.3), the top of the drill rod butt joint (4.2) is matched with an inner bulge (4.1.6) which is arranged at the upper end of the butt joint transition pipe (4.1) and used for accommodating a key sleeve through a torque transmission pressure cap (4.8), and the top of the butt joint transition pipe (4.1) is connected with a kelly bar (8).
2. The drill rod quick disconnect device of claim 1, wherein: the track pin (4.5) is installed in the swivel (4.4), a swivel pressure cap (4.6) is arranged above the swivel (4.4), and the swivel (4.4) and the track pin (4.5) are connected to the upper end of the butt joint cone body (4.3) through the swivel pressure cap (4.6).
3. The drill rod quick disconnect device of claim 1, wherein: the drill rod butt joint (4.2) comprises a cylindrical structure (4.2.1) on the upper side and a conical structure (4.2.2) on the lower side, and the conical structure (4.2.2) on the lower side is provided with a circle of strip-shaped groove (4.2.3) to form a claw shape; wherein, the inner wall of the upper end of the upper cylindrical structure (4.2.1) is provided with internal threads (4.2.4) which are connected with a torque transmission pressure cap (4.8) through the internal threads (4.2.4).
4. The drill rod quick disconnect device of claim 1, wherein: butt joint centrum (4.3) including toper structure main part (4.3.1), torque transmission brace key (4.3.2), top connection (4.3.3) and external screw thread (4.3.4), the outer wall of toper structure main part (4.3.1) on distribute and have round torque transmission brace key (4.3.2), be equipped with top connection (4.3.3) in the upper end of toper structure main part (4.3.1), the outside of top connection (4.3.3) is equipped with external screw thread (4.3.4).
5. The drill rod quick disconnect device of claim 4, wherein: the torque transmission supporting key (4.3.2) is of a strip-shaped convex structure.
6. The drill rod quick disconnect device of claim 1, wherein: the butt joint rail (4.1.3) comprises an upper rail and a lower rail, wherein the upper rail is an upper rail groove with equal length, and the lower rail is formed by arranging two lower rail grooves with one longer length and one shorter length.
7. The drill rod quick disconnect device of claim 6, wherein: one side of the upper track groove is an upper vertical edge, the other side of the upper track groove is an upper bevel edge, and the top of the upper track groove is a groove formed by arc-shaped structures.
8. The drill rod quick disconnect device of claim 6, wherein: one side of the shorter lower track groove in the lower track groove is a drooping straight edge, the other side of the shorter lower track groove is a lower inclined edge, the bottom of the lower track groove is a groove formed by an arc-shaped structure, and an angle formed by the drooping straight edge and the lower inclined edge is positioned right below the middle part of the upper inclined edge of the upper track groove.
9. The drill rod quick disconnect device of claim 8, wherein: one side of a longer lower track groove in the lower track groove is a drooping straight edge, the other side of the longer lower track groove is a lower inclined edge, a strip-shaped track groove is additionally arranged at the lower part of the longer lower track groove, the bottom of the longer lower track groove is a groove formed by an arc-shaped structure, and an angle formed by the drooping straight edge and the lower inclined edge is positioned right below the middle part of the upper inclined edge of the upper track groove.
10. The drill rod quick disconnect device of claim 1, wherein: the butt joint transition pipe (4.1) comprises a butt joint transition pipe main body (4.1.1), a protrusion (4.1.2), a butt joint rail (4.1.3), a transition pipe upper joint (4.1.4), a transition pipe lower joint (4.1.5) and an inner protrusion (4.1.6), wherein the inner protrusion (4.1.6) for accommodating the key sleeve is arranged at the upper end of the butt joint transition pipe main body (4.1.1), a circle of butt joint rail (4.1.3) is arranged on the outer wall of the middle lower part, the transition pipe lower joint (4.1.5) is arranged at the bottom, and the transition pipe upper joint (4.1.4) is arranged at the top end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110605932.9A CN113187412A (en) | 2021-06-01 | 2021-06-01 | Quick disconnecting device for drill rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110605932.9A CN113187412A (en) | 2021-06-01 | 2021-06-01 | Quick disconnecting device for drill rod |
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| CN113187412A true CN113187412A (en) | 2021-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110605932.9A Withdrawn CN113187412A (en) | 2021-06-01 | 2021-06-01 | Quick disconnecting device for drill rod |
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| CN (1) | CN113187412A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117759146A (en) * | 2024-02-22 | 2024-03-26 | 山东省三河口矿业有限责任公司 | Rock stratum drilling equipment for coal mine exploitation of fast assembly pipe fitting |
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2021
- 2021-06-01 CN CN202110605932.9A patent/CN113187412A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117759146A (en) * | 2024-02-22 | 2024-03-26 | 山东省三河口矿业有限责任公司 | Rock stratum drilling equipment for coal mine exploitation of fast assembly pipe fitting |
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Application publication date: 20210730 |
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