CN108002272B - Pulling rope device for pulling drilling steel wire rope and pulling method thereof - Google Patents
Pulling rope device for pulling drilling steel wire rope and pulling method thereof Download PDFInfo
- Publication number
- CN108002272B CN108002272B CN201711397093.6A CN201711397093A CN108002272B CN 108002272 B CN108002272 B CN 108002272B CN 201711397093 A CN201711397093 A CN 201711397093A CN 108002272 B CN108002272 B CN 108002272B
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- rope
- steel wire
- wire rope
- winch
- pulling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D3/00—Portable or mobile lifting or hauling appliances
- B66D3/04—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage
- B66D3/06—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage with more than one pulley
- B66D3/08—Arrangements of sheaves
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D2700/00—Capstans, winches or hoists
- B66D2700/02—Hoists or accessories for hoists
- B66D2700/026—Pulleys, sheaves, pulley blocks or their mounting
- B66D2700/028—Pulley blocks with multiple sheaves
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a pulling rope device for pulling a drilling steel wire rope and a pulling method thereof. The invention can realize that the field staff is not required to pull the rope and the steel wire rope, reduce the labor intensity of the field staff and eliminate the safety risk.
Description
Technical Field
The invention relates to a pulling rope device for pulling a drilling steel wire rope and a pulling method thereof, which are used for pulling the drilling steel wire rope when the drilling steel wire rope is penetrated.
Background
Before the derrick is lifted, the drilling steel wire rope needs to pass through pulleys of the crown block and the traveling block in a certain sequence to form a lifting operation system for drilling construction. At present, when the drilling steel wire rope is threaded, the rope guiding steel wire rope firstly penetrates through the crown block and the traveling block pulley, then the rope guiding steel wire rope is connected with the drilling steel wire rope, and finally the rope reverser is driven to thread the drilling steel wire rope. However, after the rope-guiding steel wire rope passes through the crown block pulley or the traveling block pulley, the rope-guiding steel wire rope needs to be manually pulled, and the site use is very inconvenient.
When the rope guiding steel wire rope passes through the crown block pulley and the traveling block pulley, the rope guiding steel wire rope is subjected to the friction force of the crown block pulley and the traveling block pulley and the weight of the rope guiding steel wire rope, and the rope guiding steel wire rope is pulled out by great manpower on site. As the number of pulley blocks of the crown block and the traveling block is increased, the required pulling force is increased. Thus, when a fleet pulls a rope wire on site, it is often necessary to arrange 3-5 personnel to pull the rope wire, which can result in a greater shortage of personnel who would otherwise install other equipment for the drilling rig.
When a field person pulls the rope steel wire rope, the rope steel wire rope is often placed on the shoulder, and the rope steel wire rope is pulled out quickly by hand. If the speed of pulling out the rope is not accurately mastered by the field personnel, the arm of the personnel is easily pulled or the shoulder is easily injured.
Disclosure of Invention
The invention aims to overcome the problems in the prior art and provide a drawing rope device for drawing a drilling steel wire rope and a drawing method thereof. The invention can realize that the field staff is not required to pull the rope and the steel wire rope, reduce the labor intensity of the field staff and eliminate the safety risk.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
a pull rope device for pulling a drilling steel wire rope, which is characterized in that: the device comprises a first winch, a second winch, a first pulley mechanism, a second pulley mechanism, a rope guiding steel wire rope, a short rope guiding rope, a connector and a rotary hook, wherein the first pulley mechanism and the second pulley mechanism are fixedly arranged on a derrick back steel frame, the first winch is arranged on a drilling platform surface, the second winch is arranged below the second pulley mechanism, the steel wire rope on the first winch passes through the first pulley mechanism and is connected to one end of the connector, the steel wire rope on the second winch passes through the second pulley mechanism and is connected to the other end of the connector, the rotary hook is connected to the lower side of the connector, the short rope guiding rope is connected to the rope guiding steel wire rope, and the rope guiding steel wire rope is hung on the rotary hook.
The first pulley mechanism and the second pulley mechanism are composed of two pulley blocks and a U-shaped mounting seat, the U-shaped mounting seat is fixed on a derrick back steel frame beam and fixed through a locknut and a pin, the two pulley blocks are fixed below the U-shaped mounting seat, two pulley sides of the two pulley blocks are separated through a rib plate, one pulley is used for pulling a steel wire rope connector to move left and right, and the other pulley is used for increasing the length of a guide wire rope.
The connector comprises two traction lug plates and a suspension lug plate, wherein the two traction lug plate holes penetrate through the steel wire rope, the steel wire rope ends are fixed through U-shaped rings respectively, and the suspension lug plate holes below the connector are connected with hooks of the steel wire rope.
The first winch and the second winch are composed of a motor, a roller and a brake mechanism, the motor is connected with the roller to drive the roller to rotate positively and negatively, and the roller is provided with a steel wire rope groove.
The first pulley mechanism is fixed on a derrick back steel frame above the traveling block, the second pulley mechanism is fixed on the derrick back steel frame near the crown block, and the first winch is placed on a drilling platform near the first pulley mechanism.
A pulling method of a pulling rope device for pulling a drilling steel wire rope is characterized by comprising the following steps of:
the rope-guiding steel wire rope passes through the crown block and the traveling block, and when the rope-guiding steel wire rope moves towards the crown block end, the second winch is used for shrinking the steel wire rope on the winch, so that the coupler moves rightwards;
when the rope guiding steel wire rope moves to the second pulley mechanism end, the rope guiding steel wire rope on the rotary hook is taken down, the short rope guiding rope passes through the crown block, the other end of the short rope guiding rope is hung on the rotary hook, and then the first winch is used for shrinking the steel wire rope on the winch, so that the coupler moves towards the traveling block end;
when the short rope is moved to the middle part of the derrick, the short rope is taken down, the steel wire rope on the second winch is contracted, the rope guiding steel wire rope is continuously hung on the rotary hook, and then the coupler is moved to the traveling block end;
when the rope guiding steel wire rope moves to the first pulley mechanism end, the rope guiding steel wire rope on the rotary hook is taken down, the short rope guiding is used for penetrating through the traveling block, the other end of the short rope guiding is hung on the rotary hook, and then the steel wire rope on the winch is contracted by the second winch, so that the coupler moves to the crown block end;
repeating the rope threading method until the rope threading steel wire rope passes through the fast wheel of the crown block;
when the rope guiding steel wire rope passes through the fast wheel of the crown block and is pulled to the first pulley mechanism, the rope guiding steel wire rope on the rotary hook is taken down, the short rope guiding rope passes through the first pulley mechanism, the other end of the short rope guiding rope is hung on the rotary hook, and then the steel wire rope on the winch is contracted by the second winch, so that the connector moves towards the end of the second pulley mechanism, the length of the rope guiding steel wire rope is increased, and the length of the rope guiding steel wire rope can reach the winch of the rope rewinding device.
When the length of the rope guiding steel wire rope is insufficient, the rope guiding steel wire rope passes through the second pulley mechanism in the mode, so that the length of the rope guiding steel wire rope is increased, and finally the length of the rope guiding steel wire rope can reach the rope rewinding device winch.
The invention has the advantages that:
1. the invention is used for pulling the rope when the rope is pulled to pull the drilling steel wire rope before the derrick is lifted, thereby realizing automatic pulling of the rope pulling steel wire rope, replacing the manual pulling of the rope pulling steel wire rope by site workers, reducing the labor intensity of the site workers and eliminating the safety risk.
2. According to the invention, the wire rope connector is used for realizing the reciprocating pulling of the wire rope from the crown block end to the traveling block end, so that the process of manually pulling the wire rope is replaced, more personnel control is provided for the installation of drilling machine equipment, and the potential safety hazard of pulling the wire rope by personnel is eliminated. The device has the advantages of simple structure, simple and convenient operation, safety and reliability, and can effectively reduce the labor intensity of field workers.
Drawings
FIG. 1 is a schematic diagram of the structure of the device of the present invention;
FIG. 2 is an enlarged schematic illustration of the coupling of the present invention in connection with other components;
FIG. 3 is a schematic view of the pulley mechanism of the present invention mounted on a back steel frame of a derrick;
FIG. 4 is a schematic diagram of a pulley mechanism according to the present invention;
fig. 5 is a schematic view of the coupler of the present invention.
Marked in the figure as: 1. a first winch; 2. a first pulley mechanism; 3. a rope-guiding steel wire rope; 4. a coupler; 5. a second pulley mechanism; 6. a crown block; 7. short lead; 8. a second winch; 9. a traveling block; 10. rotating the hook; 11. derrick back steel frame.
Detailed Description
Example 1
A pulling rope device for pulling a drilling steel wire rope is a device for automatically pulling the drilling steel wire rope when the drilling steel wire rope is pulled by a pulling rope before a derrick is lifted, and replaces manual pulling of the drilling steel wire rope by field staff. The device comprises a first winch 1, a second winch 8, a first pulley mechanism 2, a second pulley mechanism 5, a rope guiding steel wire rope 3, a short rope guiding 7, a connector 4 and a rotary hook 10, wherein the first pulley mechanism 2 and the second pulley mechanism 5 are fixedly arranged on a derrick back steel frame 11, the first winch 1 is arranged on a drilling platform surface, the second winch 8 is arranged below the second pulley mechanism 5, the steel wire rope on the first winch 1 passes through the first pulley mechanism 2 and is connected to one end of the connector 4, the steel wire rope on the second winch 8 passes through the second pulley mechanism 5 and is connected to the other end of the connector 4, the rotary hook 10 is connected to the lower part of the connector 4, the rope guiding steel wire rope 3 is connected with the short rope guiding 7, and the rope guiding steel wire rope 3 is hung on the rotary hook 10.
The first pulley mechanism 2 and the second pulley mechanism 5 are composed of two pulley blocks and a U-shaped installation seat, the U-shaped installation seat is fixed on a derrick back steel frame beam and is fixed through a locknut and a pin, the two pulley blocks are fixed below the U-shaped installation seat, two pulley sides of the two pulley blocks are separated through a rib plate, one pulley is used for pulling a steel wire rope connector to move left and right, and the other pulley is used for increasing the length of a guide wire rope.
The connector 4 comprises two traction lug plates and a suspension lug plate, wherein the two traction lug plate holes penetrate through the steel wire rope, the steel wire rope heads are respectively fixed through U-shaped rings, and the suspension lug plate holes below the connector 4 are connected with hooks of the rope-guiding steel wire rope 3.
The first winch 1 and the second winch 8 are composed of a motor, a roller and a brake mechanism, the motor is connected with the roller to drive the roller to rotate positively and negatively, and a steel wire rope groove is formed in the roller.
The first pulley mechanism 2 is fixed on a derrick back steel frame 11 above the traveling block, the second pulley mechanism 5 is fixed on the derrick back steel frame 11 near the crown block, and the first winch 1 is placed on a drilling platform near the first pulley mechanism 2.
A method of pulling a pull string device for pulling a drilling wireline, comprising:
the rope guiding steel wire rope 3 passes through the crown block 6 and the traveling block 9, and when the rope guiding steel wire rope 3 moves towards the crown block 6, the second winch 8 is used for shrinking the steel wire rope on the winch, so that the coupler 4 moves rightwards;
when the rope guiding steel wire rope 3 moves to the end of the second pulley mechanism 5, the rope guiding steel wire rope 3 on the rotary hook 10 is taken down, the short rope guiding 7 passes through the crown block, the other end of the short rope guiding 7 is hung on the rotary hook 10, and then the first winch 1 is used for shrinking the steel wire rope on the winch, so that the coupler 4 moves towards the end of the traveling block 9;
when the short rope 7 moves to the middle part of the derrick, the short rope 7 is taken down, the steel wire rope on the second winch 8 is contracted, the rope guiding steel wire rope 3 is continuously hung on the rotary hook 10, and then the coupler 4 moves towards the end of the traveling block 9;
when the rope guiding steel wire rope 3 moves to the end of the first pulley mechanism 2, the rope guiding steel wire rope 3 on the rotary hook 10 is taken down, the short rope guiding 7 passes through the traveling block, the other end of the short rope guiding 7 is hung on the rotary hook 10, and then the steel wire rope on the winch is contracted by the second winch 8, so that the coupler 4 moves towards the end of the crown block 6;
repeating the rope threading method until the rope threading steel wire rope 3 passes through the fast wheel of the crown block 6;
when the rope guiding steel wire rope 3 passes through the fast wheel of the crown block 6 and is pulled to the first pulley mechanism 2, the rope guiding steel wire rope 3 on the rotary hook 10 is taken down, the short rope guiding 7 passes through the first pulley mechanism 2, the other end of the short rope guiding 7 is hung on the rotary hook 10, then the steel wire rope on the winch is contracted by the second winch 8, the connector 4 moves towards the end of the second pulley mechanism 5, the length of the rope guiding steel wire rope 3 is increased, and the length of the rope guiding steel wire rope 3 can reach the winch of the rope reverser.
When the length of the rope guiding steel wire rope 3 is insufficient, the rope guiding steel wire rope 3 passes through the second pulley mechanism 5 in the mode, the length of the rope guiding steel wire rope 3 is increased, and finally the length of the rope guiding steel wire rope 3 can reach the rope rewinding winch.
Example 2
In a rope pulling device for pulling a drilling steel rope, two pulley mechanisms are respectively fixed on a derrick back steel frame near an overhead traveling crane and a derrick back steel frame above a traveling crane, two small winches are respectively fixed at corresponding positions near the two pulley mechanisms, the steel rope on the small winches respectively penetrates through the two fixed pulley mechanisms, the steel rope between the two fixed pulley mechanisms is connected by a steel rope connector, and then the rope pulling steel rope is hung on a big hook below the steel rope connector. And respectively starting and controlling the running speeds of the two small winches according to the positions of the connectors, so that the wire rope connectors can move left and right, and the rope-leading wire rope is pulled.
In the invention, a short rope 7 is connected to a rope guiding steel wire rope 3, when a connector 4 pulls the rope guiding steel wire rope 3 to move to a fixed pulley mechanism at the end of a crown block 6 or the end of a traveling block, the rope guiding steel wire rope 3 on a connector hook is taken down, the length of the rope guiding steel wire rope is increased by adopting the short rope guiding 7, one end of the short rope guiding 7 passes through the crown block 6 or a traveling block 9, the other end of the short rope guiding 7 is hung on a big hook below the connector 4, and the two small winches are respectively started to control the running speeds, so that the left and right pulling of the rope guiding steel wire rope 3 is realized. When the rope 3 passes through the crown block fast wheel and the rope length can not reach the rope rewinding device, the short rope 7 passes through the pulley mechanism at the end of the traveling block 9, the other end of the short rope 7 is hung on the rotary hook 10, and the rope on the winch is contracted by the small winch. If the length of the rope guide 3 is still not enough to reach the rope inverter, the rope guide passes through the pulley mechanism at the crown block end in the same manner until the length of the rope guide 3 reaches the rope inverter.
The pulley mechanism consists of two pulley blocks and a U-shaped mounting seat, wherein the U-shaped mounting seat is fixed on a derrick back steel frame beam and is fixed by a locknut and a pin. Two pulley blocks are fixed below the U-shaped mounting seat, two sides of each pulley are separated by a ribbed plate to prevent the steel wire rope from jumping out, one pulley pulls the steel wire rope connector to move left and right, and the other pulley increases the length of the steel wire rope by using a short rope threading method.
The connector 4 is formed by connecting two traction lug plates and one suspension lug plate in a welding mode, the two traction lug plate holes penetrate through the steel wire rope, and the U-shaped rings are used for fixing the rope heads of the steel wire rope respectively. The hanging lug holes below the steel wire rope connector are connected with the hooks of the traction ropes.
The small winch consists of a motor, a roller and a brake mechanism, the motor drives the roller to rotate in the positive and negative directions, the small winch brake controls the rotating speed of the winch in a belt brake mode, and the small winch roller is provided with a steel wire rope groove.
Claims (6)
1. A pulling method of a pulling rope device for pulling a drilling steel wire rope is characterized by comprising the following steps of:
the pull rope device includes:
the device comprises a first winch (1), a second winch (8), a first pulley mechanism (2), a second pulley mechanism (5), a lead wire rope (3), a short lead wire (7), a connector (4) and a rotary hook (10), wherein the first pulley mechanism (2) and the second pulley mechanism (5) are fixedly arranged on a derrick back steel frame (11), the first winch (1) is arranged on a drilling platform, the second winch (8) is arranged below the second pulley mechanism (5), the wire rope on the first winch (1) passes through the first pulley mechanism (2) and is connected to one end of the connector (4), the wire rope on the second winch (8) passes through the second pulley mechanism (5) and is connected to the other end of the connector (4), the rotary hook (10) is connected to the lower part of the connector (4), the short lead wire rope (7) is connected to the lead wire rope (3), and the lead wire rope (3) is hung on the rotary hook (10);
the drawing method comprises the following steps:
the rope guiding steel wire rope (3) passes through the crown block (6) and the traveling block (9), and when the rope guiding steel wire rope (3) moves towards the crown block (6), the steel wire rope on the winch is contracted by the second winch (8) so as to enable the coupler (4) to move rightwards;
when the rope guiding steel wire rope (3) moves to the end of the second pulley mechanism (5), the rope guiding steel wire rope (3) on the rotary hook (10) is taken down, the short rope guiding rope (7) passes through the crown block, the other end of the short rope guiding rope (7) is hung on the rotary hook (10), and then the first winch (1) is used for shrinking the steel wire rope on the winch, so that the coupler (4) moves towards the end of the travelling block (9);
when the short rope (7) moves to the middle part of the derrick, the short rope (7) is taken down, the steel wire rope on the second winch (8) is contracted, the rope guiding steel wire rope (3) is continuously hung on the rotary hook (10), and then the coupler (4) moves towards the end of the traveling block (9);
when the rope guiding steel wire rope (3) moves to the end of the first pulley mechanism (2), the rope guiding steel wire rope (3) on the rotary hook (10) is taken down, the short rope guiding rope (7) passes through the traveling block, the other end of the short rope guiding rope (7) is hung on the rotary hook (10), and then the steel wire rope on the winch is contracted by the second winch (8), so that the coupler (4) moves towards the end of the crown block (6);
repeating the rope threading method until the rope threading steel wire rope (3) passes through the fast wheel of the crown block (6);
when the rope guiding steel wire rope (3) passes through the fast wheel of the crown block (6) and is pulled to the first pulley mechanism (2), the rope guiding steel wire rope (3) on the rotary hook (10) is taken down, the short rope guiding wire (7) passes through the first pulley mechanism (2), the other end of the short rope guiding wire (7) is hung on the rotary hook (10), and then the steel wire rope on the winch is contracted by the second winch (8), so that the connector (4) moves towards the end of the second pulley mechanism (5), the length of the rope guiding steel wire rope (3) is increased, and the length of the rope guiding steel wire rope (3) can reach the winch of the rope reverser.
2. The method of pulling a pull-string device for pulling a drill string according to claim 1, wherein: the first pulley mechanism (2) and the second pulley mechanism (5) are composed of two pulley blocks and a U-shaped installation seat, the U-shaped installation seat is fixed on a derrick back steel frame beam and is fixed through a locknut and a pin, the two pulley blocks are fixed below the U-shaped installation seat, two pulley sides of the two pulley blocks are separated through a rib plate, one pulley is used for pulling a steel wire rope connector to move left and right, and the other pulley is used for increasing the length of a steel wire rope.
3. The method of pulling a pull string device for pulling a drill string according to claim 2, wherein: the connector (4) comprises two traction lug plates and a suspension lug plate, wherein the two traction lug plate holes penetrate through the steel wire rope, the steel wire rope ends are fixed through U-shaped rings respectively, and the suspension lug plate holes below the connector are connected with hooks of the steel wire rope.
4. A method of pulling a pull string assembly for pulling a drill string as defined in claim 3, wherein: the first winch (1) and the second winch (8) are composed of a motor, a roller and a brake mechanism, the motor is connected with the roller to drive the roller to rotate positively and negatively, and a steel wire rope groove is formed in the roller.
5. The method of pulling a pull-string device for pulling a drill string according to claim 4, wherein: the first pulley mechanism (2) is fixed on a derrick back steel frame (11) above the traveling block, the second pulley mechanism (5) is fixed on the derrick back steel frame (11) near the crown block, and the first winch (1) is placed on a drilling platform near the first pulley mechanism (2).
6. The method of pulling a pull-string device for pulling a drill string according to claim 5, wherein: when the length of the rope guiding steel wire rope (3) is insufficient, the rope guiding steel wire rope (3) passes through the second pulley mechanism (5) in the mode, the length of the rope guiding steel wire rope (3) is increased, and finally the length of the rope guiding steel wire rope (3) can reach the rope rewinding winch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711397093.6A CN108002272B (en) | 2017-12-21 | 2017-12-21 | Pulling rope device for pulling drilling steel wire rope and pulling method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711397093.6A CN108002272B (en) | 2017-12-21 | 2017-12-21 | Pulling rope device for pulling drilling steel wire rope and pulling method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108002272A CN108002272A (en) | 2018-05-08 |
| CN108002272B true CN108002272B (en) | 2023-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711397093.6A Active CN108002272B (en) | 2017-12-21 | 2017-12-21 | Pulling rope device for pulling drilling steel wire rope and pulling method thereof |
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| Country | Link |
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| CN (1) | CN108002272B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2174560Y (en) * | 1993-10-12 | 1994-08-17 | 胜利石油管理局钻井工艺研究院 | Cable-feeding apparatus for tower type derrick |
| GB9618866D0 (en) * | 1996-03-18 | 1996-10-23 | Daito Juki Koji Co Ltd | A device for applying tension load to a wire-rope |
| CN2292158Y (en) * | 1995-10-05 | 1998-09-23 | 曹荣禄 | Drill line threading device for drill |
| CN2660089Y (en) * | 2003-08-22 | 2004-12-01 | 宝鸡石油机械有限责任公司 | Spirally lifting headframe basement having lifting system and wire threading way |
| CN204342334U (en) * | 2014-11-05 | 2015-05-20 | 中曼石油钻井技术有限公司 | That a kind of oil-well rig is changed the large rope of drilling well leads large rope device |
| CN205114916U (en) * | 2015-11-13 | 2016-03-30 | 兰州兰石集团有限公司 | Two winch oil -well rigs play to rise system based on move fixed pulley train |
| CN205187721U (en) * | 2015-12-04 | 2016-04-27 | 兰州兰石集团有限公司 | Oil drilling derrick crouches and adorns spooling gear |
| CN105655917A (en) * | 2014-11-24 | 2016-06-08 | 国家电网公司 | Apparatus for middle phase crossing in line laying of helicopter and line laying method |
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2017
- 2017-12-21 CN CN201711397093.6A patent/CN108002272B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2174560Y (en) * | 1993-10-12 | 1994-08-17 | 胜利石油管理局钻井工艺研究院 | Cable-feeding apparatus for tower type derrick |
| CN2292158Y (en) * | 1995-10-05 | 1998-09-23 | 曹荣禄 | Drill line threading device for drill |
| GB9618866D0 (en) * | 1996-03-18 | 1996-10-23 | Daito Juki Koji Co Ltd | A device for applying tension load to a wire-rope |
| CN2660089Y (en) * | 2003-08-22 | 2004-12-01 | 宝鸡石油机械有限责任公司 | Spirally lifting headframe basement having lifting system and wire threading way |
| CN204342334U (en) * | 2014-11-05 | 2015-05-20 | 中曼石油钻井技术有限公司 | That a kind of oil-well rig is changed the large rope of drilling well leads large rope device |
| CN105655917A (en) * | 2014-11-24 | 2016-06-08 | 国家电网公司 | Apparatus for middle phase crossing in line laying of helicopter and line laying method |
| CN205114916U (en) * | 2015-11-13 | 2016-03-30 | 兰州兰石集团有限公司 | Two winch oil -well rigs play to rise system based on move fixed pulley train |
| CN205187721U (en) * | 2015-12-04 | 2016-04-27 | 兰州兰石集团有限公司 | Oil drilling derrick crouches and adorns spooling gear |
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| Publication number | Publication date |
|---|---|
| CN108002272A (en) | 2018-05-08 |
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