CN218439203U - Drilling top drive rotating head - Google Patents
Drilling top drive rotating head Download PDFInfo
- Publication number
- CN218439203U CN218439203U CN202222580283.4U CN202222580283U CN218439203U CN 218439203 U CN218439203 U CN 218439203U CN 202222580283 U CN202222580283 U CN 202222580283U CN 218439203 U CN218439203 U CN 218439203U
- Authority
- CN
- China
- Prior art keywords
- locking
- top drive
- oil cylinder
- driven gear
- locking pin
- Prior art date
- 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.)
- Active
Links
Images
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model relates to an oil drilling technical field especially relates to a well drilling top drives rotating head. The drilling top drive rotating head comprises a fixed shaft, a rotating shell, a driven gear, a driving mechanism, a twisting plate and a locking mechanism, wherein the twisting plate comprises a fixed part and a connecting part which are connected, the locking mechanism comprises a locking oil cylinder and a locking pin, the connecting end of an oil cylinder rod of the locking oil cylinder is of a spherical structure, and a ball socket which is connected with the spherical structure in a matching manner is arranged in the locking pin. When the locking mechanism works, the oil cylinder rod drives the locking pin to move up and down so as to insert into the positioning hole of the driven gear and further to enable the driven gear to stop rotating, and the connecting end of the oil cylinder rod is of a spherical structure, a matched ball socket is arranged in the locking pin, and the spherical structure is rotatably connected with the ball socket, so that the oil cylinder rod cannot deflect when the locking pin deflects, the locking pin after deflection is prevented from generating transverse bending moment on the oil cylinder rod, and leakage caused by sealing failure of the clamping oil cylinder is avoided.
Description
Technical Field
The utility model relates to an oil drilling technical field especially relates to a well drilling top drives rotating head.
Background
The top drive device has strong technical advantages for the field of petroleum drilling, particularly during construction operations such as deep holes and directional holes. The top drive device directly drives the drill string to perform rotary drilling through the top of the drill string, and can realize circulation of mud in a hole and lifting and lowering operation of the drill string. The pipe processing device is a main structure of a top drive device and is used for operations such as drilling tool extraction, auxiliary screwing and unscrewing, and the top drive rotating head is an important component of a pipe processor and can be matched with the top drive device to complete lifting and lowering operations of a drill string.
The top drive rotating head comprises a fixed shaft and a rotating shell rotating around the fixed shaft, when a back-up tong device in the top drive device is installed on the rotating shell of the top drive rotating head, the back-up tong device needs to stop rotating when screwing and unscrewing a screw thread, namely the top drive rotating head needs to provide counter torque to stop rotating the rotating shell, and therefore the top drive rotating head is required to be provided with a locking mechanism while rotating. The mode that current locking mechanism adopted lockpin hydro-cylinder drive lockpin to insert the locating hole to provide reaction torque more, and then made swivel housing stall, nevertheless the condition that the unusual atress of locking round pin and locking hydro-cylinder damaged appears easily, and the accuracy of locking is low, influences the normal use of rotating head.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
In view of above-mentioned shortcoming, the not enough of prior art, the utility model provides a rotating head is driven on drilling top has avoided the locking round pin after deflecting to produce horizontal moment of flexure to the hydro-cylinder pole of locking the hydro-cylinder, and then has avoided the sealed inefficacy of locking the hydro-cylinder to lead to revealing, has improved the life of locking the mechanism.
(II) technical scheme
In order to achieve the above object, the utility model discloses a main technical scheme include:
the embodiment of the utility model provides a well drilling top drive rotating head, including the top be used for with the fixed axle of the box fixed connection of top drive gear case, rotationally overlap the rotatory shell on the fixed axle, the driven gear of the top that is coaxially fixed in rotatory shell and drive the actuating mechanism that the driven gear rotated, its characterized in that still includes anti-twist disk and locking mechanism; the anti-torsion disc comprises a fixing part and a connecting part which are connected, the fixing part can be detachably connected with the box body of the top drive gear box, the fixing part is of an annular structure and is coaxially arranged with the driven gear up and down, and the driving mechanism and the locking mechanism are both arranged on the connecting part; the locking mechanism comprises a locking oil cylinder and a locking pin, the connecting end of an oil cylinder rod of the locking oil cylinder is of a spherical structure, and a ball socket which is matched and connected with the spherical structure is arranged in the locking pin; the vertical end face of the driven gear is provided with a positioning hole matched with the locking pin, and the oil cylinder rod drives the locking pin to move up and down so as to be inserted into or pulled out of the positioning hole.
Preferably, the connecting part is provided with a first mounting hole, and the distance from the center of the first mounting hole to the rotation center of the driven gear is the same as the distance from the positioning hole to the rotation center of the driven gear; the locking mechanism is arranged in the first mounting hole through the locking support; the center of the locking support is provided with a guide through hole, the locking pin is positioned in the guide through hole, and the oil cylinder rod drives the locking pin to move up and down along the guide through hole so as to extend out of or retract into the guide through hole.
Preferably, the ball socket comprises a hemisphere groove and a guide groove which are communicated; the guide groove is a through groove with the same diameter, and the transverse diameter of the guide groove is the same as the maximum diameter of the hemispherical groove.
Preferably, the locking mechanism further comprises a spliced baffle ring; the baffle ring is sleeved on the oil cylinder rod and is fixed with the end part of the locking pin so as to connect the spherical structure with the ball socket.
Preferably, the locking pin comprises a first locking column and a second locking column which are coaxially connected, and the diameter of the second locking column is smaller than that of the first locking column; the socket is located in the first capture post.
Preferably, the capture mechanism further comprises a sensor disposed on the capture support to detect a horizontal distance between the side wall of the capture pin and the sensor.
Preferably, a plurality of positioning holes are included; the plurality of positioning holes are circumferentially arranged by taking the rotation center of the driven gear as a circle center.
Preferably, the positioning hole is a long groove-shaped through hole.
Preferably, the connecting part is provided with a second mounting hole; the driving mechanism is arranged on the second mounting hole through the driving support; the driving mechanism comprises a driving gear, the output end of the driving mechanism penetrates through the second mounting hole to be connected with the driving gear, and the driving gear is meshed with the driven gear.
Preferably, the fixing part is provided with a plurality of bulges matched with positioning grooves at the bottom end of the box body of the top drive gear box.
(III) advantageous effects
The utility model has the advantages that:
the utility model provides a pair of rotating head is driven on well drilling top, when the locking mechanism during operation, the hydro-cylinder pole drives locking round pin elevating movement and then makes driven gear stop rotating with the locating hole that inserts driven gear, when carrying out the locking, driven gear can promote the locking round pin, the locking round pin provides the reaction torque, the locking round pin can produce the skew, because the link of hydro-cylinder pole is spherical structure, be equipped with the ball socket of matching in the locking round pin, spherical structure and ball socket rotate to be connected, consequently the hydro-cylinder pole can not deflect when the locking round pin deflects, thereby the locking round pin after having avoided deflecting produces horizontal moment of flexure to the hydro-cylinder pole, and then the sealed inefficacy of having avoided the centre gripping hydro-cylinder leads to revealing, the life of locking mechanism has been improved.
Drawings
FIG. 1 is a schematic structural view of a top drive gearbox, a top drive rotary head and a back-up wrench;
FIG. 2 is a schematic cross-sectional view of a top drive swivel head installation;
FIG. 3 is a schematic structural view of the driving mechanism, the locking mechanism and the anti-twist disk;
FIG. 4 is a schematic structural view of a twist-resistant disk;
FIG. 5 is a schematic view of the driven gear;
FIG. 6 is a schematic cross-sectional view of the capture mechanism in a first state;
FIG. 7 is a schematic cross-sectional view of the capture mechanism in a second state;
FIG. 8 is a cross-sectional view of the capture pin.
[ instruction of reference ]
1: a fixed shaft;
2: rotating the housing;
3: a driven gear; 31: positioning holes;
4: a drive mechanism; 41: a drive support; 42: a driving gear;
5: a twist-back plate; 51: a fixed part; 511: a protrusion; 52: a connecting portion; 521: a first mounting hole; 522: a second mounting hole;
6: a locking mechanism; 61: a locking oil cylinder; 611: a cylinder rod; 6111: a spherical structure; 612: an oil cylinder body; 6121: a buffer chamber; 62: a locking pin; 621: a ball socket; 6211: a hemispherical groove; 6212: a guide groove; 622: a first lock post; 623: a second position-locking post; 63: a baffle ring; 64: a sensor; 65: a locking support; 651: a guide through hole;
a: a top drive gearbox;
b: a back-up tong device.
Detailed Description
In order to better understand the above technical solution, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
In practical application's in-process, the device is driven on top drives gear box a including the top, the top drives rotating head and back-up tong device b, the top is driven the rotating head and is installed in the bottom of the box that the gear box a was driven on the top, the main shaft stretches out in the gear box a and drives the rotating head be arranged in with back-up tong device b in the drilling rod of centre gripping be connected, because the restriction of derrick height in this embodiment, back-up tong device b drives 2 fixed connection of rotatory shell in the rotating head with the top, when the main shaft need twist off the drilling rod, the top is driven gear box a and is driven the main shaft and rotate, back-up tong device b need drive the drilling rod stall promptly with back-up tong device b fixed connection's top and drive rotatory shell 2 of rotating head and need stall.
As shown in fig. 1, the present embodiment provides a drilling top drive rotating head, which comprises a fixed shaft 1, a rotating shell 2, a driven gear 3, a driving mechanism 4, a twist-back disc 5 and a locking mechanism 6.
As shown in fig. 2, the top end of the fixed shaft 1 is fixedly connected with the top-driving gearbox a of the top-driving device, the rotating shell 2 is rotatably sleeved on the fixed shaft 1, the driven gear 3 is coaxially fixed on the top end of the rotating shell 2, and the driving mechanism 4 drives the driven gear 3 to rotate so as to drive the rotating shell 2 to rotate.
As shown in fig. 4, the anti-twist disk 5 includes a fixing portion 51 and a connecting portion 52 connected to each other, the fixing portion 51 is detachably connected to the casing of the top drive gear casing a, and the fixing portion 51 is of an annular structure and is disposed coaxially with the driven gear 3. As shown in fig. 3, the driving mechanism 4 and the locking mechanism 6 are both disposed on the connecting portion 52 of the anti-twist plate 5, as shown in fig. 6, the locking mechanism 6 includes a locking cylinder 61 and a locking pin 62, the locking cylinder 61 includes a cylinder body 612 and a cylinder rod 611 connected to each other, the connecting end of the cylinder rod 611 of the locking cylinder 61 is a spherical structure 6111, a ball socket 621 matched and connected to the spherical structure 6111 is disposed in the locking pin 62, a positioning hole 31 matched with the locking pin 62 is disposed on the vertical end surface of the driven gear 3, and the cylinder rod 611 drives the locking pin 62 to move up and down to insert or extract the positioning hole 31 of the driven gear 3, so that the rotating shell 2 stops rotating or continues rotating.
In order to facilitate the installation of the anti-twist disc 5 and the top drive gearbox a, a plurality of protrusions 511 matching with the positioning grooves at the bottom end of the box body of the top drive gearbox a are arranged on the fixing part 51 of the anti-twist disc 5.
The utility model provides a pair of well drilling top drive rotating head, when the locking mechanism 6 during operation, hydro-cylinder pole 611 drives locking round pin 62 elevating movement and then makes driven gear 3 stop rotatory with inserting driven gear 3's locating hole 31, when locking, driven gear 3 can promote locking round pin 62, locking round pin 62 provides the reaction torque, locking round pin 62 can produce the skew, because the link of hydro-cylinder pole 611 is spherical structure 6111, be equipped with the ball socket 621 of matcing in the locking round pin 62, spherical structure 6111 rotates with ball socket 621 and is connected, consequently hydro-cylinder pole 611 also can not deflect when locking round pin 62 deflects, thereby the locking round pin 62 after having avoided deflecting produces horizontal moment of flexure to hydro-cylinder pole 611, and then the sealed inefficacy of having avoided the centre gripping hydro-cylinder leads to revealing, the life of locking mechanism 6 has been improved.
As shown in fig. 4, the connecting portion 52 of the anti-twist disk 5 is provided with a first mounting hole 521 and a second mounting hole 522, and the distance from the center of the first mounting hole 521 to the rotation center of the driven gear 3 is the same as the distance from the positioning hole 31 to the rotation center of the driven gear 3. The locking mechanism 6 is installed in the first installation hole 521 through a locking support 65, a guide through hole 651 is formed in the center of the locking support 65, the locking pin 62 is located in the guide through hole 651, and the oil cylinder rod 611 drives the locking pin 62 to move up and down along the guide through hole 651 so as to extend out of or retract into the guide through hole 651. The driving mechanism 4 is disposed on the second mounting hole 522 through the driving support 41, the driving mechanism 4 includes a driving gear 42, an output end of the driving mechanism 4 passes through the second mounting hole 522 to be connected to the driving gear 42, the driving gear 42 is engaged with the driven gear 3, and when the driving gear 42 rotates, the driven gear 3 is driven to rotate so as to rotate the rotating casing 2 of the top drive rotating head.
Since the distance from the center of the first mounting hole 521 to the rotation center of the driven gear 3 is the same as the distance from the positioning hole 31 of the driven gear 3 to the rotation center of the driven gear 3, it is ensured that the vertical movement center of the lock pin 62 can be accurately inserted into the positioning hole 31 of the driven gear 3.
As shown in fig. 6-7, the locking mechanism 6 further includes a stop ring 63, and the stop ring 63 is sleeved on the cylinder rod 611 and fixed to the end of the locking pin 62, so that the spherical structure 6111 at the connecting end of the cylinder rod 611 is connected to the ball socket 621. As shown in fig. 8, the ball socket 621 of the locking pin 62 includes a hemispherical groove 6211 and a guide groove 6212 which are communicated with each other, the guide groove 6212 is a through groove having the same diameter, and the transverse diameter of the guide groove 6212 is the same as the maximum diameter of the hemispherical groove 6211. Therefore, the spherical structure 6111 at the connecting end of the oil cylinder rod 611 extends into the hemispherical groove 6211 from the guide groove 6212 and is connected with the locking pin 62 through the spliced baffle ring 63, so that the connecting end of the oil cylinder rod 611 and the locking pin 62 can be conveniently detached.
As shown in fig. 6-7, the capture mechanism 6 further includes a sensor 64, the sensor 64 being disposed on the capture support 65 to detect the horizontal distance between the side wall of the capture pin 62 and the sensor 64. As shown in FIG. 8, the capture pin 62 includes a first capture post 622 and a second capture post 623 coaxially connected, the second capture post 623 having a diameter less than the diameter of the first capture post 622, and a socket 621 disposed within the first capture post 622. Since the diameter of the first locking column 622 is smaller than that of the second locking column 623 and the first locking column 622 is located above the second locking column 623, when the locking pin 62 is vertically moved to be inserted into or pulled out of the positioning hole 31 of the driven gear 3, the sensor 64 detects that the distance between the side wall of the locking pin 62 is continuously changed, and the sensor 64 sends the information to the control device of the top drive device, so that whether the locking pin 62 is inserted into the positioning hole 31 of the driven gear 3 is known according to the distance between the sensor 64 and the side wall of the locking pin 62.
As shown in fig. 5, the driven gear 3 includes a plurality of positioning holes 31, and the plurality of positioning holes 31 are circumferentially arranged around the rotation center of the driven gear 3. In the present embodiment, the positioning hole 31 is a long groove-shaped through hole, thereby increasing the probability of the lock pin 62 being inserted into the positioning hole 31 of the driven gear 3.
In the description of the present invention, it is to be understood that the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to imply that the number of indicated technical features is significant. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium; either internal to the two elements or in an interactive relationship of the two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
In the present application, unless otherwise expressly stated or limited, a first feature may be "on" or "under" a second feature, and the first and second features may be in direct contact, or the first and second features may be in indirect contact via an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lower level than the second feature.
In the description herein, the description of the terms "one embodiment," "some embodiments," "an embodiment," "an example," "a specific example" or "some examples" or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
While embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that modifications, alterations, substitutions and variations may be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (10)
1. A drilling top drive rotating head comprises a fixed shaft (1) with the top end fixedly connected with a box body of a top drive gear box (a), a rotating shell (2) rotatably sleeved on the fixed shaft (1), a driven gear (3) coaxially fixed at the top end of the rotating shell (2) and a driving mechanism (4) for driving the driven gear (3) to rotate, and is characterized by further comprising a torsion disc (5) and a locking mechanism (6);
the anti-twist disc (5) comprises a fixing portion (51) and a connecting portion (52) which are connected, the fixing portion (51) can be detachably connected with a box body of the top drive gear box (a), the fixing portion (51) is of an annular structure and is coaxially arranged with the driven gear (3) from top to bottom, and the driving mechanism (4) and the locking mechanism (6) are arranged on the connecting portion (52);
the locking mechanism (6) comprises a locking oil cylinder (61) and a locking pin (62), the connecting end of an oil cylinder rod (611) of the locking oil cylinder (61) is of a spherical structure (6111), and a ball socket (621) which is connected with the spherical structure (6111) in a matching manner is arranged in the locking pin (62);
and a positioning hole (31) matched with the locking pin (62) is formed in the vertical end face of the driven gear (3), and the oil cylinder rod (611) drives the locking pin (62) to move up and down so as to be inserted into or pulled out of the positioning hole (31).
2. The drilling top drive swivel of claim 1, wherein:
a first mounting hole (521) is formed in the connecting part (52), and the distance from the center of the first mounting hole (521) to the rotation center of the driven gear (3) is the same as the distance from the positioning hole (31) to the rotation center of the driven gear (3);
the locking mechanism (6) is arranged in the first mounting hole (521) through a locking support (65);
the center of the locking support (65) is provided with a guide through hole (651), the locking pin (62) is positioned in the guide through hole (651), and the oil cylinder rod (611) drives the locking pin (62) to move up and down along the guide through hole (651) so as to extend out or retract into the guide through hole (651).
3. The drilling top drive swivel of claim 1, wherein:
the ball socket (621) comprises a hemisphere groove (6211) and a guide groove (6212) which are communicated;
the guide groove (6212) is a through groove with the same diameter, and the transverse diameter of the guide groove (6212) is the same as the maximum diameter of the hemispherical groove (6211).
4. The drilling top drive swivel of claim 1, wherein:
the locking mechanism (6) also comprises a spliced baffle ring (63);
the baffle ring (63) is sleeved on the oil cylinder rod (611) and is fixed with the end part of the locking pin (62) so as to enable the spherical structure (6111) to be connected with the ball socket (621).
5. The drilling top drive swivel of claim 2, wherein:
the locking pin (62) comprises a first locking column (622) and a second locking column (623) which are coaxially connected, and the diameter of the second locking column (623) is smaller than that of the first locking column (622);
the socket (621) is located within the first locking post (622).
6. The drilling top drive swivel of claim 5, wherein:
the capture mechanism (6) further comprises a sensor (64), wherein the sensor (64) is arranged on the capture support (65) to detect the horizontal distance between the side wall of the capture pin (62) and the sensor (64).
7. The drilling top drive swivel of claim 1, wherein:
comprises a plurality of positioning holes (31);
the positioning holes (31) are circumferentially arranged by taking the rotation center of the driven gear (3) as a circle center.
8. The drilling top drive swivel of claim 1, wherein:
the positioning hole (31) is a long groove-shaped through hole.
9. The drilling top drive swivel of claim 1, wherein:
a second mounting hole (522) is formed in the connecting part (52);
the driving mechanism (4) is arranged on the second mounting hole (522) through a driving support (41);
the driving mechanism (4) comprises a driving gear (42), the output end of the driving mechanism (4) penetrates through the second mounting hole (522) to be connected with the driving gear (42), and the driving gear (42) is meshed with the driven gear (3).
10. The drilling top drive swivel of claim 1, wherein:
and the fixing part (51) is provided with a plurality of bulges (511) matched with the positioning grooves at the bottom end of the box body of the top drive gear box (a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222580283.4U CN218439203U (en) | 2022-09-28 | 2022-09-28 | Drilling top drive rotating head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222580283.4U CN218439203U (en) | 2022-09-28 | 2022-09-28 | Drilling top drive rotating head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218439203U true CN218439203U (en) | 2023-02-03 |
Family
ID=85084626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222580283.4U Active CN218439203U (en) | 2022-09-28 | 2022-09-28 | Drilling top drive rotating head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218439203U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117868671A (en) * | 2024-03-12 | 2024-04-12 | 黑龙江景宏石油设备制造有限公司 | Ocean exploration top drive device |
-
2022
- 2022-09-28 CN CN202222580283.4U patent/CN218439203U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117868671A (en) * | 2024-03-12 | 2024-04-12 | 黑龙江景宏石油设备制造有限公司 | Ocean exploration top drive device |
| CN117868671B (en) * | 2024-03-12 | 2024-05-10 | 黑龙江景宏石油设备制造有限公司 | Ocean exploration top drive device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN218439203U (en) | Drilling top drive rotating head | |
| CN114075938A (en) | Self-tightening anti-deflection setting device | |
| CN106703728B (en) | The two-way displacement apparatus of reciprocating rotary | |
| CN203114282U (en) | Underground mud positive pulse generator | |
| CN100376763C (en) | Strapdown type stable platform apparatus | |
| CN1776193A (en) | Butt-joint drilling rod capable of transmitting electric signal | |
| CN106948786B (en) | Integrated window-opening side drilling tool | |
| CN116427854B (en) | Highway bridge pile foundation digs device soon | |
| CN112709535A (en) | Rotary drilling rig and drill bit thereof | |
| CN217872673U (en) | Multifunctional adapter | |
| CN206801463U (en) | A kind of integrated lateral drill tools | |
| CN109356551A (en) | A kind of pressure break gate valve of the super-pressure heavy caliber with effort-saving mechanism | |
| CN115584925A (en) | Drilling top drive system | |
| CN201024969Y (en) | Rotary ejection preventer for under balance drilling well | |
| CN202673145U (en) | Guide apparatus used in rotary drilling | |
| CN115788326B (en) | Hydraulic micro-rotation safety joint for downhole pipe column | |
| CN201031690Y (en) | Circulation cover assembly for bore mud drill following batter level | |
| CN218882955U (en) | Reduction gearbox and raise boring machine | |
| CN210637054U (en) | Device in shale gas horizontal well temporary shut-in well | |
| CN114033328B (en) | Logging probe pipe fisher | |
| CN218347324U (en) | Screw drill rotor lengthening shaft | |
| CN108952603B (en) | Power head floating device, power head and power head drilling machine | |
| CN218376358U (en) | Double dynamical pore-forming low tube construction equipment | |
| CN218624065U (en) | Direct-drive type electric top drive | |
| CN103742082B (en) | Drill pipe coupler for raise boring machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |