CN220869351U - Drill rod rush-connection assembly - Google Patents
Drill rod rush-connection assembly Download PDFInfo
- Publication number
- CN220869351U CN220869351U CN202322447562.8U CN202322447562U CN220869351U CN 220869351 U CN220869351 U CN 220869351U CN 202322447562 U CN202322447562 U CN 202322447562U CN 220869351 U CN220869351 U CN 220869351U
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- back pressure
- pressure valve
- drill rod
- frame
- support frame
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- 239000000725 suspension Substances 0.000 claims abstract description 36
- 238000007789 sealing Methods 0.000 abstract description 5
- 238000005553 drilling Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Earth Drilling (AREA)
Abstract
The utility model discloses a drill rod rush-connection assembly, which comprises a back pressure valve, a hydraulic tongs which are arranged in a telescopic way, a support frame which is arranged on the hydraulic tongs, a gate-shaped frame which is arranged on the support frame in a lifting way, and a lifting rope which is wound on the support frame and is fixedly connected with suspension rods arranged at two ends of the back pressure valve; the gate-shaped frame is provided with a clamping groove matched with the suspension rod in a clamping way. When overflow or blowout occurs, the lifting rope lifts the back pressure valve through the suspension rod, and the suspension rod is arranged in the clamping groove; after the hydraulic tongs grip the drill rod, the gate frame descends, and the back pressure valve is buckled with the drill rod; the gate frame continues to descend, and the back pressure valve is tightly buckled with the drill rod under the drive of the hydraulic tongs to finish the rush connection; the back pressure valve is closed, and then the back pressure valve is detached from the gate frame. The connection mode between the support frame and the back pressure valve is good, the back pressure valve can be conveniently and rapidly detached from the gate frame, the best well sealing opportunity is avoided, the risk of out-of-control accident occurrence is reduced, and the safety is improved.
Description
Technical Field
The utility model relates to the technical field of drilling, in particular to a drill rod rush-connection assembly.
Background
In petroleum and natural gas drilling construction, when the pressure of a drilling fluid column in a well is smaller than the pressure of a high-pressure oil gas layer, the high-pressure oil gas can quickly enter the well, overflow, kick and even blowout occur, environmental pollution, casualties or toxic gas leakage are caused, and even fire disasters are caused to cause large-area mechanical destruction and death in serious cases. In order to reduce loss, when overflow occurs, a wellhead blowout preventer is needed to seal the annulus between a drilling tool and a borehole, and internal blowout prevention tools such as a back pressure valve are connected in a robbing way to seal the borehole of the drilling tool, so that wellhead pressure is controlled, high-pressure oil and gas are reduced to invade the well, and the subsequent well killing operation is ensured to be safer and faster.
When the internal blowout prevention tool is connected in a robbing way, the back pressure valve is lifted on the drill rod by the aid of the robbing device, and after the back pressure valve is closed, the robbing device is required to be disconnected from the back pressure valve, so that the hydraulic tongs can drive the back pressure valve to rotate, and the back pressure valve and the drill rod are ensured to be fastened together. However, the existing quick-connect device can replace manual quick-connect, but the auxiliary joint and the back pressure valve of the existing quick-connect device are difficult to disassemble after the quick-connect is completed, and the risk that the back pressure valve is detached from the drill rod box is present, so that the quick-connect is invalid, the quick-connect device needs to repeatedly and repeatedly re-connect, the optimal well sealing opportunity is missed, the out-of-control accident is caused, and the safety is still not guaranteed.
Disclosure of utility model
Therefore, the utility model aims to provide the drill rod emergency connection assembly, the clamping groove of the gate-shaped frame is matched with the suspension rod of the back pressure valve in a clamping way, the back pressure valve can be conveniently and rapidly detached after emergency connection is completed, the optimal well sealing opportunity is avoided, the risk of blowout out-of-control accidents is reduced, and the safety is improved.
The utility model provides a drill rod rush-connection assembly, which comprises:
A back pressure valve;
Hydraulic tongs which can be arranged in a telescopic way;
The support frame is arranged on the hydraulic tongs;
A door-shaped frame which is arranged on the supporting frame in a lifting manner;
A lifting rope which is wound on the supporting frame and fixedly connected with the suspension rods arranged at the two ends of the back pressure valve;
Wherein, the door frame is equipped with the joint groove with suspension pole joint complex.
Preferably, the clamping interface of each clamping groove is hinged with a stop plate, and the stop plates are used for preventing the suspension rod from being separated from the clamping grooves.
Preferably, a rotation stopping rib and a rotation stopping groove which are mutually matched and used for limiting the relative rotation of the suspension rod and the clamping groove are arranged between the suspension rod and the clamping groove.
Preferably, the lifting telescopic cylinder is connected between the support frame and the door-shaped frame.
Preferably, the hydraulic tongs comprise a fixed seat which is fixedly arranged, the fixed seat is provided with a plugging groove, and the support frame comprises a vertical support frame which can be detachably plugged in the plugging groove.
Preferably, the support frame further comprises a horizontal support frame and at least one pulley support rod, wherein the horizontal support frame is vertically connected with the vertical support frame, the pulley support rods are fixedly arranged on the horizontal support frame, main fixed pulleys are fixedly arranged on each pulley support rod, all the main fixed pulleys are distributed along the line, and the lifting ropes sequentially bypass all the main fixed pulleys.
Preferably, the hydraulic tongs further comprise a fixed pile and a tongs driving cylinder connected between the fixed pile and the hydraulic tongs.
Preferably, a cylinder barrel of the large clamp driving cylinder is fixedly provided with an auxiliary fixed pulley, and the auxiliary fixed pulley is used for enabling one end, far away from the back pressure valve, of the lifting rope to bypass.
Preferably, the hydraulic tongs further comprise lifting ropes fixedly connected with the hydraulic tongs.
Preferably, the suspension rod is provided with a lifting lug plate connected with a lifting rope.
Compared with the background art, the drill rod emergency connection assembly provided by the utility model comprises a back pressure valve, a hydraulic tongs, a support frame, a gate frame and a lifting rope, wherein the gate frame is provided with a clamping groove which is matched with the suspension rods arranged at the two ends of the back pressure valve in a clamping way. The hydraulic tongs are arranged in a telescopic way, the supporting frame is arranged on the hydraulic tongs, the gate-shaped frame can be lifted and arranged on the supporting frame, and the lifting rope is wound on the supporting frame.
During normal drilling operations, the back pressure valve remains open. When overflow or blowout occurs, the lifting rope is tied on the suspension rod of the back pressure valve, the lifting rope is lifted, and the back pressure valve is lifted by the lifting rope until the suspension rod of the back pressure valve is installed in the clamping groove of the gate frame; the hydraulic tongs extend out until the drill rod enters the notch of the hydraulic tongs, and the hydraulic tongs grip the drill rod; the gate-type frame drives the back pressure valve to synchronously descend, and the back pressure valve and the drill rod are buckled; the gate-shaped frame drives the back pressure valve to continuously descend, and meanwhile, the hydraulic tongs drive the back pressure valve to rotate, so that the back pressure valve is tightly buckled with the drill rod, and the emergency connection is completed; the back pressure valve is closed, then the back pressure valve is detached from the gate frame, the hydraulic tongs loosen the back pressure valve, the back pressure valve stays on the drill rod, the gate frame rises and resets, and the hydraulic tongs retract.
According to the utility model, after the back pressure valve and the drill rod are connected in a robbery way, the back pressure valve can be conveniently and rapidly detached from the gate frame, so that the optimal well sealing opportunity is avoided, the risk of out-of-control accidents is reduced, and the safety is improved.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a block diagram of a drill rod robbery assembly provided by an embodiment of the present utility model;
FIG. 2 is an exploded view of the quick connect coupling of the back pressure valve of FIG. 1;
FIG. 3 is a block diagram of a pilot joint of the back pressure valve of FIG. 1;
FIG. 4 is a block diagram of a swivel mount of the back pressure valve of FIG. 1;
FIG. 5 is a block diagram of the support bracket of FIG. 1;
Fig. 6 is a structural view of the gate frame of fig. 1.
The reference numerals are as follows:
The hydraulic lifting device comprises a back pressure valve 11, a hydraulic tongs 12, a supporting frame 13, a gate frame 14, a lifting rope 15, a lifting telescopic cylinder 16, a main fixed pulley 17, a fixed pile 18, a tongs driving cylinder 19, a secondary fixed pulley 20 and a lifting rope 21;
Suspension rod 111, rob joint 112, valve body 113, guide joint 114, ram 115, and bearing 116;
A rotation stop rib 1111 and a lifting lug plate 1112;
A fixing seat 121, a clamp body 122, a clamp head 123 and a rope 124;
a vertical support frame 131, a horizontal support frame 132, a pulley support bar 133, and a telescopic cylinder fixing bar 134;
a clamping groove 141, a stop plate 142 and a connecting lug plate 143;
A rotation stop groove 1411.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In order that those skilled in the art will better understand the present utility model, the following description will be given in detail with reference to the accompanying drawings and specific embodiments.
The embodiment of the utility model discloses a drill rod rush-connection assembly, which changes the connection mode between a support frame 13 and a back pressure valve 11, is convenient and quick to detach the back pressure valve 11, and is beneficial to improving the safety.
As shown in fig. 1 to 4, the drill rod emergency connection assembly comprises a back pressure valve 11, a hydraulic tongs 12, a supporting frame 13, a gate frame 14 and a lifting rope 15, wherein the back pressure valve 11 comprises an emergency connection joint 112, a valve body 113, a guide joint 114 and a rotating frame, the emergency connection joint 112 is arranged at the upper end of the valve body 113, and the emergency connection joint 112 and the valve body 113 can be connected by adopting threads. A push rod 115 is slidably inserted into the center of the snap-in connector 112. A guide joint 114 is installed at the lower end of the valve body 113 for guiding the valve body 113 to be connected with the drill pipe. A threaded connection may also be used between the pilot joint 114 and the valve body 113. The rotating frame is rotatably sleeved on the outer side of the valve body 113, and comprises a bearing 116 and two suspension rods 111, wherein the inner ring of the bearing 116 is in interference connection with the valve body 113, and the two suspension rods 111 are respectively and symmetrically fixedly arranged on the outer ring of the bearing 116. The key point in the present utility model is to change the structure and installation of the suspension rod 111 of the back pressure valve 11, and the structure and installation of the suspension rod 111 will be described below. The rest of the structure and working principle of the back pressure valve 11 can refer to the prior art, for example, a back pressure valve device provided in the patent with publication number CN 218780331U.
The hydraulic tongs 12 can be arranged in a telescopic way, and the hydraulic tongs 12 can move left and right along the horizontal direction according to the current position of the figure 1. The hydraulic tong 12 comprises a tong body 122 and a tong head 123 fixedly arranged at the end part of the tong body 122, wherein the tong head 123 is provided with a notch for gripping a drill rod. The structure and working principle of the clamp head 123 can be specifically referred to the prior art.
The supporting frame 13 is installed on the hydraulic tongs 12 and mainly plays a supporting role. The gate frame 14 is arranged on the support frame 13 in a lifting manner and can stretch and retract along the vertical direction, and the gate frame 14 is arranged below the support frame 13 and is used for connecting the back pressure valve 11. The lifting rope 15 is wound on the supporting frame 13, one end of the lifting rope 15 is connected with a lifting winch, the other end of the lifting rope is fixedly connected with suspension rods 111 arranged at two ends of the back pressure valve 11 and used for lifting the back pressure valve 11, and the back pressure valve 11 is conveniently arranged on the gate frame 14.
The gate frame 14 is provided with the clamping groove 141, and the clamping groove 141 is matched with the suspension rod 111 in a clamping way, so that the gate frame 14 can drive the back pressure valve 11 to synchronously lift and lower, and the back pressure valve 11 can be conveniently detached from the gate frame 14.
During normal drilling operation, the support frame 13 is mounted on the hydraulic tongs 12, and the ejector rod 115 is pressed down, so that the back pressure valve 11 is kept open. When overflow or blowout occurs, the lifting rope 15 is tied on the suspension rod 111 of the back pressure valve 11, the lifting winch is started, the lifting winch winds up the lifting rope 15, and the lifting rope 15 lifts the back pressure valve 11 until the suspension rod 111 of the back pressure valve 11 is installed in the clamping groove 141 of the gate frame 14; the hydraulic tongs 12 extend until the drill rod enters the notch of the hydraulic tongs 12, and the hydraulic tongs 12 grip the drill rod; the gate frame 14 drives the back pressure valve 11 to synchronously descend, and the back pressure valve 11 and the drill rod are buckled; the gate-shaped frame 14 drives the back pressure valve 11 to continuously descend, and meanwhile, the hydraulic tongs 12 drive the back pressure valve 11 to rotate, so that the back pressure valve 11 and a drill rod are fastened, and the emergency connection is completed; the ejector rod 115 moves upwards to reset, the back pressure valve 11 is closed, the back pressure valve 11 is detached from the gate frame 14, the hydraulic tongs 12 loosen the back pressure valve 11, the back pressure valve 11 stays on the drill rod, the gate frame 14 moves upwards to reset, and the hydraulic tongs 12 retract.
In summary, after the back pressure valve 11 and the drill rod are in emergency connection, the back pressure valve 11 can be conveniently and rapidly detached from the gate frame 14, so that the best well sealing opportunity is avoided, the risk of out-of-control accident is reduced, and the safety is improved.
As shown in fig. 6, the card interface of each card slot 141 is hinged with a stopper plate 142. When the suspension rod 111 of the back pressure valve 11 needs to be installed in the clamping groove 141, the stop plate 142 is rotated upwards, the clamping interface is opened, and the suspension rod 111 is conveniently installed. When the suspension rod 111 is installed in the clamping groove 141, the stop plate 142 is rotated downwards to block the clamping interface, and the stop plate 142 prevents the suspension rod 111 from being separated from the clamping groove 141, so that the accidental falling of the back pressure valve 11 in the process of emergency connection is avoided, and the safety is positively improved.
The rotation stopping rib 1111 and the rotation stopping groove 1411 are arranged between the suspension rod 111 and the clamping groove 141, and are used for limiting the relative rotation of the two, so as to avoid the accidental swing of the back pressure valve 11 in the transferring process. Specifically, the suspension rod 111 is a square rod, and the rotation stop rib 1111 is a right-angle rib provided between two adjacent sides of the square rod. The clamping groove 141 is a square groove, and the rotation stopping groove 1411 is a right-angle groove arranged between two adjacent inner side walls of the square groove. Of course, the structures of the rotation stop rib 1111 and the rotation stop groove 1411 are not limited thereto.
The drill rod emergency connection assembly further comprises a lifting telescopic cylinder 16 connected between the support frame 13 and the gate frame 14 and used for driving the gate frame 14 to lift relative to the support frame 13 in the vertical direction, and the gate frame 14 can drive the back pressure valve 11 to lift in the vertical direction. Specifically, the horizontal support frame 132 of the support frame 13 is fixedly provided with a telescopic cylinder fixing rod 134, and the cylinder barrel of the lifting telescopic cylinder 16 is fixedly arranged on the telescopic cylinder fixing rod 134. The top of the gate frame 14 is provided with a connecting lug plate 143, and a piston rod of the lifting telescopic cylinder 16 is connected with the connecting lug plate 143. Lift cylinder 16 may be, but is not limited to, a hydraulic cylinder.
The hydraulic tongs 12 further comprises a fixed seat 121 fixedly arranged, and the fixed seat 121 is integrally and vertically fixedly arranged on the tongs body 122. The fixing seat 121 is provided with the inserting groove, the supporting frame 13 comprises a vertical supporting frame 131, the vertical supporting frame 131 can be detachably inserted into the inserting groove, so that the supporting frame 13 is conveniently detached from the fixing seat 121, and particularly when drilling operation is stopped, the occupied space can be reduced by detaching the supporting frame 13, and the hydraulic tongs 12 can be conveniently adjusted. Specifically, two inserting grooves are symmetrically formed in the top of the fixing seat 121, each inserting groove can be a rectangular groove, the vertical supporting frame 131 is composed of two vertical columns, each column can be a square tube, and the two vertical columns are matched with the rectangular grooves, so that the vertical supporting frame 131 can be conveniently inserted or detached. Of course, the mounting manner between the fixing base 121 and the supporting frame 13 is not limited thereto, for example, directly welding the supporting frame 13 to the fixing base 121, which does not affect the achievement of the object of the present utility model.
As shown in fig. 5, the support frame 13 is L-shaped, and the support frame 13 further includes a horizontal support frame 132 vertically connected to the vertical support frame 131, and at least one pulley support rod 133 fixedly disposed on the horizontal support frame 132. The horizontal support frame 132 is composed of two parallel beams, each beam is integrally and vertically connected with each upright. Each pulley support rod 133 is fixedly provided with a main fixed pulley 17, all the main fixed pulleys 17 are distributed along the line, and the lifting rope 15 sequentially bypasses all the main fixed pulleys 17, so that the lifting rope 15 changes direction under the guidance of all the main fixed pulleys 17. Specifically, all the pulley support rods 133 are arranged in parallel between the two cross beams, two ends of the horizontal support frame 132 are respectively provided with a pulley support rod 133, the center of each pulley support rod 133 is respectively provided with a main fixed pulley 17, and the installation mode of each main fixed pulley 17 can be specifically referred to the prior art. Of course, the installation and distribution of the main fixed pulley 17 are not limited thereto, and the main fixed pulley can be adaptively adjusted according to the structure of the supporting frame 13 and the actual working environment.
The drill rod emergency connection assembly further comprises a fixed pile 18 and a big clamp driving cylinder 19 connected between the fixed pile 18 and the hydraulic big clamp 12 and used for driving the hydraulic big clamp 12 to stretch in the horizontal direction. The cylinder barrel of the large clamp driving cylinder 19 is fixedly connected with one end of the clamp body 122 far away from the clamp head 123, and the piston rod of the large clamp driving cylinder is fixedly connected with the fixed pile 18. The tongs driving cylinder 19 may be a hydraulic cylinder, or may be an air cylinder.
The cylinder barrel of the large clamp driving cylinder 19 is fixedly provided with a secondary fixed pulley 20, the secondary fixed pulley 20 is used for enabling one end, far away from the back pressure valve 11, of the lifting rope 15 to bypass, and the secondary fixed pulley 20 can be matched with the primary fixed pulley 17 to tension the lifting rope 15. One end of the lifting rope 15, which is close to the auxiliary fixed pulley 20, is provided with a hook which is used for connecting a lifting winch. In addition, the hook can prevent the lifting rope 15 from being separated from the auxiliary fixed pulley 20.
The drill rod grabbing assembly further comprises a lifting rope 21 fixedly connected with the hydraulic tongs 12 and used for lifting the hydraulic tongs 12 in the vertical direction, and the hydraulic tongs 12 can float, so that the tongs driving cylinder 19 can be ensured to easily push the hydraulic tongs 12 to the drill rod. The lifting height of the lifting rope 21 needs to ensure that the lower clamp head of the hydraulic large clamp 12 can be snapped onto the female buckle of the drill rod, and the upper clamp head can be snapped onto the male buckle of the drill rod, so that the female buckle and the male buckle of the drill rod can be connected. Specifically, a rope lever 124 is integrally provided at the top end of the fixing base 121 for fixing the lifting rope 21.
The suspension lever 111 is provided with a lifting lug plate 1112 connected to the lifting cord 15 for connecting the lifting cord 15. One end of the lifting rope 15 far away from the auxiliary fixed pulley 20 can be divided into two parts, and the two parts are respectively correspondingly connected with two suspension rods 111 at two ends of the back pressure valve 11.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A drill pipe tieback assembly, comprising:
A back pressure valve (11);
A hydraulic tongs (12) which can be arranged in a telescopic way;
A supporting frame (13) arranged on the hydraulic tongs (12);
A door-shaped frame (14) which is arranged on the supporting frame (13) in a lifting manner;
A lifting rope (15) which is wound on the supporting frame (13) and is fixedly connected with suspension rods (111) arranged at two ends of the back pressure valve (11);
Wherein, the gate frame (14) is provided with a clamping groove (141) which is matched with the suspension rod (111) in a clamping way.
2. The drill rod clamping assembly according to claim 1, characterized in that the clamping interface of each clamping groove (141) is hinged with a stop plate (142), the stop plates (142) being used for preventing the suspension rod (111) from being separated from the clamping groove (141).
3. The drill rod clamping assembly according to claim 2, wherein a rotation stopping rib (1111) and a rotation stopping groove (1411) which are mutually matched and used for limiting relative rotation are arranged between the suspension rod (111) and the clamping groove (141).
4. A drill rod emergency connection assembly according to any one of claims 1 to 3, further comprising a lifting telescopic cylinder (16) connected between the support frame (13) and the gate frame (14).
5. A drill rod emergency connection assembly according to any one of claims 1 to 3, characterized in that the hydraulic tongs (12) comprise a fixed seat (121) fixedly arranged, the fixed seat (121) is provided with a socket, and the support frame (13) comprises a vertical support frame (131) detachably inserted in the socket.
6. The drill rod rush-joint assembly according to claim 5, wherein the support frame (13) further comprises a horizontal support frame (132) vertically connected with the vertical support frame (131) and at least one pulley support rod (133) fixedly arranged on the horizontal support frame (132), each pulley support rod (133) is fixedly provided with a main fixed pulley (17), all the main fixed pulleys (17) are distributed along a line, and the lifting rope (15) sequentially bypasses all the main fixed pulleys (17).
7. A drill rod emergency connection assembly according to any one of claims 1 to 3, further comprising a fixing pile (18) and a tong driving cylinder (19) connected between the fixing pile (18) and the hydraulic tong (12).
8. The drill rod rush-joint assembly according to claim 7, wherein a cylinder barrel of the large clamp driving cylinder (19) is fixedly provided with a secondary fixed pulley (20), and the secondary fixed pulley (20) is used for enabling one end of the lifting rope (15) far away from the back pressure valve (11) to bypass.
9. A drill rod emergency connection assembly according to any one of claims 1 to 3, further comprising a lifting rope (21) fixedly connected to the hydraulic tong (12).
10. A drill rod tieback assembly according to any one of claims 1 to 3, characterized in that the suspension rod (111) is provided with a lifting lug (1112) connected to the lifting string (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322447562.8U CN220869351U (en) | 2023-09-08 | 2023-09-08 | Drill rod rush-connection assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322447562.8U CN220869351U (en) | 2023-09-08 | 2023-09-08 | Drill rod rush-connection assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220869351U true CN220869351U (en) | 2024-04-30 |
Family
ID=90808230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322447562.8U Active CN220869351U (en) | 2023-09-08 | 2023-09-08 | Drill rod rush-connection assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220869351U (en) |
-
2023
- 2023-09-08 CN CN202322447562.8U patent/CN220869351U/en active Active
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