CN102979465A - Multifunctional maritime workover rig and operation method thereof - Google Patents
Multifunctional maritime workover rig and operation method thereof Download PDFInfo
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- CN102979465A CN102979465A CN2012103973742A CN201210397374A CN102979465A CN 102979465 A CN102979465 A CN 102979465A CN 2012103973742 A CN2012103973742 A CN 2012103973742A CN 201210397374 A CN201210397374 A CN 201210397374A CN 102979465 A CN102979465 A CN 102979465A
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Abstract
The invention relates to a multifunctional maritime workover rig and an operation method thereof. The multifunctional maritime workover rig and the operation method thereof are characterized by comprising a drill floor, a main lifting system, an auxiliary lifting system and a pipe treatment system. The central area of the drill floor is provided with a turntable and a hydraulic rat hole, the turntable is connected with a main portal, a hydraulic cylinder clamp is respectively arranged in the main portal and the hydraulic rat hole, a derrick is arranged on the drill floor, a crown block is arranged on the upper portion of the derrick, a main shaft is arranged on the crown block, the main lifting system and the auxiliary lifting system are arranged in the derrick, and a main pulley block and an auxiliary pulley block are respectively connected with the same main shaft of the crown block and respectively provided with a steel wire rope. The other end of each steel wire rope is wound around a main traveling block and an auxiliary traveling block, and then wound around the main pulley block and the auxiliary pulley block to be connected with a main rolling barrel and an auxiliary rolling barrel of each winch. The main rolling barrels and the auxiliary rolling barrels of the two winches are connected with the same rolling barrel main shaft. The pipe treatment system comprises an automatic conveying sliding channel, a pipe-grasping mechanical hand, a pair of hydraulic large tongs, and the hydraulic rat hole. The multifunctional maritime workover rig and the operation method thereof are widely used in oil workover in marine and land exploration.
Description
Technical field
The present invention relates to a kind of well repairing device and method of operating thereof, particularly about workover rig and method of operating thereof on a kind of Multifunction fishing that in the exploitation offshore oil, uses.
Background technology
As shown in Figure 5, the derrick height of the marine workover rig that present China is common generally only can satisfy to promote and transfer the job requirements of double joint pipe, if change the pipe in the well, then when transferring tubing string, can only connect single pipe.Common marine workover rig is when carrying out the operation of tubing string thribble in addition, can only finish at well head upper button, the shackle operation of tubing string, and can't finish simultaneously lifting, transfers the operation of tubing string.There is again conventional marine workover rig can only finish workover treatment, can not finishes simultaneously drillng operation, and then cause the utilization rate of marine workover rig and operating efficiency all lower.
Summary of the invention
For the problems referred to above, the purpose of this invention is to provide a kind of operating efficiency that can either improve lifting, transfer tubing string, can improve again workover rig and method of operating thereof on the Multifunction fishing of utilization rate of equipment and installations.
For achieving the above object, the present invention takes following technical scheme: workover rig on a kind of Multifunction fishing is characterized in that: it comprises a rig floor, a main Hoisting System, a service hoisting system and a pipe treatment system;
The central area of described rig floor is provided with a rotating disk and a hydraulic pressure rat hole, described rotating disk connects a main shaft mouth, be provided with fluid cylinder folder in the described main shaft mouth, be provided with too fluid cylinder folder in the described hydraulic pressure rat hole, be provided with a derrick on the described rig floor, the top of described derrick is provided with day car, is provided with a main shaft on the described overhead traveling crane, is provided with the auxiliary equipment of described pipe treatment system around reaching on the described rig floor;
Described main Hoisting System and described service hoisting system are arranged in the described derrick, described main Hoisting System is connected a main and auxiliary assembly pulley that connects respectively on the same main shaft of described overhead traveling crane with the service hoisting system, respectively be connected with a wire rope on the described main and auxiliary assembly pulley, the other end of two described wire rope is walked around respectively main and auxiliary tourist bus, connect respectively hank car owner, auxiliary roll cylinder after walking around described main and auxiliary assembly pulley, the main and auxiliary cylinder of two described winches is rotatably connected on the same drum spindle again;
Described pipe treatment system comprises an automatic transport slideway, a pipe-grabbing mechanical arm, a hydraulic tongs and a described hydraulic pressure rat hole that is arranged on described rig floor one side.
The load of the auxiliary tourist bus hook of described service hoisting system is more than or equal to 10 tons.
The height of described derrick can hold the height of three single standpipe.
Workover rig and method of operating thereof may further comprise the steps on described a kind of Multifunction fishing:
1, the method for operating of the service hoisting system in the button operating process may further comprise the steps on the lower pipe:
1) the service hoisting system promotes a pipe in derrick from the automatic transport slideway, and this pipe is inserted in the hydraulic pressure rat hole, and clamping fixed by the fluid cylinder in the hydraulic pressure rat hole; 2) the service hoisting system promotes another pipe in derrick from the automatic transport slideway, is located by hydraulic tongs, and links on carrying out and connect with pipe in the hydraulic pressure rat hole; 3) to have finished the two tubes of connection with the fluid cylinder gripper in the hydraulic pressure rat hole descending with firmlying, until expose linkage section for another pipe of connection at the rig floor upper surface; 4) the service hoisting system promotes the 3rd pipe in derrick from the automatic transport slideway, be located by hydraulic tongs, and the linkage section of the pipe that exposes with the rig floor upper surface links on carrying out and connect, and namely becomes the tubing string of one or three one; 5) the service hoisting system is upwards mentioned tubing string, and by pipe-grabbing mechanical arm the tubing string thribble is discharged in the pipe setback; 6) repeating step 1)～step 5), until end of operation;
2, the method for operating of the main Hoisting System in the button operating process may further comprise the steps on the lower pipe:
1) main Hoisting System is extracted a tubing string in the pipe setback and is inserted and transfer by rotating disk to the main shaft mouth, until expose for the linkage section that connects another tubing string at the rig floor upper surface, and clamping fixed by the fluid cylinder in the main shaft mouth; 2) main Hoisting System is from extracting another tubing string in derrick in the pipe setback, is located and links on carrying out and connect with tubing string in the main shaft mouth by hydraulic tongs; 3) to have finished two endowels of connection with the fluid cylinder gripper in the main shaft mouth descending with firmlying, until expose linkage section for another tubing string of connection at the rig floor upper surface; 4) main Hoisting System is located by hydraulic tongs from extracting the 3rd endowel in the pipe setback in derrick, and links on carrying out with linkage section that the rig floor upper surface exposes tubing string and connect; 5) it is descending firmly to have finished the tubing string continuation that connects with the fluid cylinder gripper in the main shaft mouth, until expose for the linkage section that connects another tubing string at the rig floor upper surface; 6) repeating step 1)～step 5), until the tubing string thribble that needs in the pipe setback is transferred in the main shaft mouth successively, i.e. complete operation.
Main Hoisting System and service hoisting system share a hydraulic tongs, so service hoisting system pipe is inserted in upper buckle and tubing string is inserted in and upward in the main shaft mouth buckles and can not finish simultaneously in the hydraulic pressure rat hole, other the time main and auxiliary Hoisting System all can the while operation.
Lift pipe string of the present invention with get rid of tubing string Job Operations method and may further comprise the steps:
3, the using method of main Hoisting System may further comprise the steps;
1) main Hoisting System from the main shaft mouth upwards pipe, when rising to one section tubing string in the derrick, the clamping fixed tube post of fluid cylinder in the main shaft mouth is by the hydraulic tongs shackle; 2) main Hoisting System will trip out the shackle tubing string and be placed in the pipe setback; 3) repeating step 1)～step 2), main Hoisting System continues to promote the tubing string in the main shaft mouth, until the tubing string that the needs in the well head are changed progressively rises on the main shaft mouth, by hydraulic tongs section by section after the tubing string shackle, successively tubing string is placed in the pipe setback again, i.e. end of operation.
4, the method for operating of auxiliary Hoisting System may further comprise the steps;
1) pipe-grabbing mechanical arm is picked up tubing string in the pipe setback, and it is placed in the hydraulic pressure rat hole, exposes the position that the top section of a pipe connects by capable tubing string to the rig floor upper surface of staying of the fluid cylinder gripper in the hydraulic pressure rat hole; 2) hydraulic tongs will expose top tubing string shackle, split into single pipe; 3) the service hoisting system is the single pipe of shackle, by the automatic transport slideway be thrown to rig floor below; 4) remaining tubing string lives in to walk to the position that the rig floor upper surface exposes the connection of pipe bottom, middle part by the fluid cylinder gripper in the hydraulic pressure rat hole; 5) the hydraulic tongs middle part tubing string that will expose continues shackle, splits into single pipe; 6) the service hoisting system is by the automatic transport slideway, with the single pipe of residue in the single pipe of shackle and the hydraulic pressure rat hole be thrown to respectively rig floor below; 7) repeating step 1)～step 6), the service hoisting system inserts the tubing string in the pipe setback respectively in the hydraulic pressure rat hole, after the hydraulic tongs shackle, more single pipe is thrown to respectively rig floor below, namely finish and get rid of the pipe operation.
The present invention is owing to take above technical scheme, it has the following advantages: 1, the present invention is owing to be provided with a main Hoisting System, one service hoisting system and dual string treatment system, and be provided with the derrick that can hold three thribble pipe height, therefore two Hoisting System can be used for the drilling well work of non-deep-well, also can make up a joint when drilling well pipe and lower brill carries out simultaneously, perhaps pull out of hole and carry out simultaneously with breaking down, also can simultaneous wheels flow to the thribble of line pipe post and the operation of lifting tubing string, the operation of upper button or shackle when transferring with the lift pipe string operation, if change the tubing string in the well head, then can finish simultaneously button or shackle and transfer or the operation of lift pipe string, greatly improve well workover or drilling well operating efficiency.2, main Hoisting System of the present invention is connected with the service hoisting system connects respectively a main and auxiliary assembly pulley on the same main shaft on the overhead traveling crane of derrick, and also be to be rotationally connected by a drum spindle on the main and auxiliary cylinder of winch, therefore make overhead traveling crane more can save the upper space of derrick, its winch has been simplified the structure of derrick, effectively saved the working space of platform, saved equipment investment, the operation of the well workover of being more convenient for.3, workover rig of the present invention is owing to the drillng operation that can finish than shallow well, and therefore the operating efficiency than common small-sized drill is higher, applicability is stronger, can also be generalized to the operation of land workover rig simultaneously.The present invention can be widely used among sea and the land recover petroleum well workover.
Description of drawings
Fig. 1 is structural representation of the present invention
Fig. 2 is Hoisting System working state schematic representation of the present invention
Fig. 3 is the top view of Fig. 2
Fig. 4 is the schematic top plan view of derrick two-layer platform
Fig. 5 is prior art ocean workover rig structural representation
The specific embodiment
Be described in detail of the present invention below in conjunction with drawings and Examples.
As shown in Figure 1, workover rig of the present invention comprises a rig floor 1, a main Hoisting System 2, a service hoisting system 3 and a pipe treatment system 4.
The central area of rig floor 1 is provided with a rotating disk 11 and a hydraulic pressure rat hole 12, rotating disk 11 connects a main shaft mouth 13, be provided with fluid cylinder folder (not shown) in the main shaft mouth 13, be provided with too fluid cylinder folder (not shown) in the hydraulic pressure rat hole 12, be provided with a derrick 14 on the rig floor 1, the top of derrick 14 is provided with day car 15, is provided with a main shaft 16 on the overhead traveling crane 15, and the height of derrick 14 can hold the height of three single standpipe.Be provided with the auxiliary equipment of pipe treatment system 4 around reaching on the rig floor 1.
Such as Fig. 1, Fig. 2, shown in Figure 3, main Hoisting System 2 of the present invention and service hoisting system 3 are arranged in the derrick 14, main Hoisting System 2 is connected with the service hoisting system and is included on the overhead traveling crane 15 same main shafts 16 connect respectively one main, auxiliary assembly pulley 21,31, main, auxiliary assembly pulley 21, respectively be connected with a wire rope 22 on 31,32, wire rope 22,32 the other end is walked around respectively the master, auxiliary tourist bus 23,33, walk around again the master, auxiliary assembly pulley 21,31 connect respectively the hank car owner afterwards, auxiliary roll cylinder 24,34, two winch masters, auxiliary roll cylinder 24,34 are rotatably connected on the same drum spindle 17.Main Hoisting System 2 is consistent with the Hoisting System function of common workover rig.Service hoisting system 3 is used for promoting drilling rod and tubing string.
As shown in Figure 1, pipe treatment system 4 of the present invention comprises an automatic transport slideway 41, a pipe-grabbing mechanical arm (not shown), a hydraulic tongs 42 and a hydraulic pressure rat hole 12.
In above-described embodiment, only be provided with in the present invention a shared hydraulic tongs 42, this hydraulic tongs 42 is used for the upper of pipe and buckles or shackle.
In above-described embodiment, the hook load of the auxiliary tourist bus 33 of service hoisting system 3 is more than or equal to 10 tons.
In above-described embodiment, the height of pipe setback can hold the thribble tubing string that 3 single tube are connected as a single entity.
In above-described embodiment, the diameter of overhead traveling crane 15 interior main and auxiliary pulleys is 670mm, and the area of overhead traveling crane 15 table tops is about 1 ㎡.To remove 3 single pipes and take over and the comb function in order to adapt to, main and auxiliary Hoisting System all is installed on the derrick 14, the corresponding increase of area (such as Fig. 1, shown in Figure 4) of the two-layer platform 18 of its derrick 14, so that increase the space of pipe setback, make things convenient for service hoisting system discharging thribble tubing string.Therefore derrick 14 floor spaces are also increasing, and it is about 2m that its every limit lengthens width.
In above-described embodiment, according to the standard of SY/T 5202-2004, the safety factor of derrick 14 stress calculation〉1.67, actual derrick 14 safety factor of stability that adopt〉1.8.
Workover rig of the present invention can be used for the drilling well work of non-deep-well, and also can make up a joint during drilling well pipe and lower brill carry out simultaneously, perhaps pulls out of hole and carries out simultaneously with breaking down.
The method of operating of workover rig on the Multifunction fishing of the present invention comprises button operation and two kinds of situations of pipe shackle operation on the lower pipe, and comprises again 3 two kinds of methods of operating of main Hoisting System 2 and service hoisting system in each situation:
1, the service hoisting of button in the operating process is that 3 method of operating may further comprise the steps on the lower pipe:
1) service hoisting system 3 promotes a pipe in derrick 14 from automatic transport slideway 41, and this pipe is inserted in the hydraulic pressure rat hole 12, and clamping fixed by the fluid cylinder in the hydraulic pressure rat hole 12;
2) service hoisting system 3 promotes another pipes in derrick 14 from automatic transport slideway 41, is located by hydraulic tongs 42, and links on carrying out and connect with pipe in the hydraulic pressure rat hole 12;
3) to have finished the two tubes of connection with the fluid cylinder grippers in the hydraulic pressure rat hole 12 descending with firmlying, until expose linkage section for another pipe of connection at rig floor 1 upper surface;
4) service hoisting system 3 promotes the 3rd pipe in derrick 14 from automatic transport slideway 41, be located by hydraulic tongs 42, and the linkage section of the pipe that exposes with rig floor 1 upper surface links on carrying out and connect, and namely becomes the tubing string of one or three one;
5) service hoisting system 3 is upwards mentioned tubing string, and by pipe-grabbing mechanical arm the tubing string thribble is discharged in the pipe setback;
6) repeating step 1)～step 5), until end of operation;
2, the method for operating of the main Hoisting System 2 in the button operating process may further comprise the steps on the lower pipe:
1) main Hoisting System 2 is extracted a tubing string in the pipe setback and is inserted and transfer by rotating disk 11 to main shaft mouth 13, until expose for the linkage section that connects another tubing string at rig floor 1 upper surface, and clamping fixed by the fluid cylinder in the main shaft mouth 13;
2) main Hoisting System 2 is from extracting another tubing string in derrick 14 in the pipe setback, is located and links on carrying out and connect with tubing string in the main shaft mouth 13 by hydraulic tongs 42;
3) to have finished two endowels of connection with the fluid cylinder grippers in the main shaft mouth 13 descending with firmlying, until expose linkage section for another tubing string of connection at rig floor 1 upper surface;
4) main Hoisting System 2 is located by hydraulic tongs 42 from extracting the 3rd endowel in the pipe setback in derrick 14, and links on carrying out with linkage section that rig floor 1 upper surface exposes tubing string and connect;
5) it is descending firmly to have finished the tubing string continuation that connects with the fluid cylinder gripper in the main shaft mouth 13, until expose for the linkage section that connects another tubing string at rig floor 1 upper surface;
6) repeating step 1)～step 5), until will need the tubing string thribble to transfer to successively in the main shaft mouth 13 to connect by linking on the hydraulic tongs 42 in the pipe setback, i.e. complete operation.
Workover rig lift pipe string, shackle and get rid of the tubing string operation, two parts method of operating of main Hoisting System 2 and service hoisting system 3 on the Multifunction fishing of the present invention:
3, the method for operating of main Hoisting System 2 may further comprise the steps;
1) main Hoisting System 2 from the main shaft mouth 13 upwards pipe, one section tubing string is risen to derrick 14 when interior, the clamping fixed tube post of fluid cylinder in the main shaft mouth 13 is by hydraulic tongs 42 shackles;
2) main Hoisting System 2 will trip out the shackle tubing string and be placed in the pipe setback;
3) repeating step 1)～step 2), main Hoisting System 2 continues to promote the tubing string in the main shaft mouth 13, until the tubing string that the needs in the well head 13 are changed progressively rises on the main shaft mouth 13, by hydraulic tongs 42 section by section after the tubing string shackle, successively tubing string is placed in the pipe setback again, i.e. end of operation.
4, the method for operating of auxiliary Hoisting System 3 may further comprise the steps;
1) pipe-grabbing mechanical arm is picked up tubing string in the pipe setback, and it is placed in the hydraulic pressure rat hole 12, exposes the position that the top section of a pipe connects by capable tubing string to rig floor 1 upper surface of staying of the fluid cylinder grippers in the hydraulic pressure rat hole 12;
2) hydraulic tongs 42 will expose top tubing string shackle, split into single pipe;
3) service hoisting system 3 is the single pipe of shackle, by automatic transport slideway 41 be thrown to rig floor 1 below;
4) hydraulic pressure rat hole 12 interior remaining tubing strings live in to walk to the position that rig floor 1 upper surface exposes the connection of pipe bottom, middle part by the fluid cylinder gripper;
5) the hydraulic tongs 42 middle part tubing string that will expose continues shackle, splits into single pipe;
6) service hoisting system 3 is by automatic transport slideway 41, with the single pipe of shackle and the single pipe of hydraulic pressure rat hole 12 interior residues be thrown to respectively rig floor 1 below;
7) repeating step 1)～step 6), service hoisting system 3 inserts the tubing string in the pipe setback respectively in the hydraulic pressure rat hole 12 successively, after hydraulic tongs 42 shackles, respectively single pipe is thrown to again rig floor 1 below, namely finish and get rid of the pipe operation.
Main and auxiliary Hoisting System 2,3 is because share a hydraulic tongs 42, service hoisting system 3 is inserted in the 12 interior shackles of hydraulic pressure rat hole at tubing string, with tubing string be to finish simultaneously in the 13 interior shackles of main shaft mouth, and other the time main and auxiliary Hoisting System 2,3 all simultaneously operations.
The various embodiments described above only are used for explanation the present invention, and wherein the structure of each parts, connected mode etc. all can change to some extent, and every equivalents and improvement of carrying out on the basis of technical solution of the present invention all should do not got rid of outside protection scope of the present invention.
Claims (4)
1. workover rig on the Multifunction fishing, it is characterized in that: it comprises a rig floor, a main Hoisting System, a service hoisting system and a pipe treatment system;
The central area of described rig floor is provided with a rotating disk and a hydraulic pressure rat hole, described rotating disk connects a main shaft mouth, be provided with fluid cylinder folder in the described main shaft mouth, be provided with too fluid cylinder folder in the described hydraulic pressure rat hole, be provided with a derrick on the described rig floor, the top of described derrick is provided with day car, is provided with a main shaft on the described overhead traveling crane, is provided with the auxiliary equipment of described pipe treatment system around reaching on the described rig floor;
Described main Hoisting System and described service hoisting system are arranged in the described derrick, described main Hoisting System is connected a main and auxiliary assembly pulley that connects respectively on the same main shaft of described overhead traveling crane with the service hoisting system, respectively be connected with a wire rope on the described main and auxiliary assembly pulley, the other end of two described wire rope is walked around respectively main and auxiliary tourist bus, connect respectively hank car owner, auxiliary roll cylinder after walking around described main and auxiliary assembly pulley, the main and auxiliary cylinder of two described winches is rotatably connected on the same drum spindle again;
Described pipe treatment system comprises an automatic transport slideway, a pipe-grabbing mechanical arm, a hydraulic tongs and a described hydraulic pressure rat hole.
2. workover rig on a kind of Multifunction fishing as claimed in claim 1 is characterized in that: the load of the auxiliary tourist bus hook of described service hoisting system is for more than or equal to 10 tons.
3. workover rig on a kind of Multifunction fishing as claimed in claim 1 or 2, it is characterized in that: the height of described derrick can hold the height of three single standpipe.
As claimed in claim 1 on a kind of Multifunction fishing workover rig and method of operating thereof may further comprise the steps:
The method of operating of the service hoisting system on step 1, the lower pipe in the button operating process may further comprise the steps:
1) the service hoisting system promotes a pipe in derrick from the automatic transport slideway, and this pipe is inserted in the hydraulic pressure rat hole, and clamping fixed by the fluid cylinder in the hydraulic pressure rat hole;
2) the service hoisting system promotes another pipe in derrick from the automatic transport slideway, is located by hydraulic tongs, and links on carrying out and connect with pipe in the hydraulic pressure rat hole;
3) to have finished the two tubes of connection with the fluid cylinder gripper in the hydraulic pressure rat hole descending with firmlying, until expose linkage section for another pipe of connection at the rig floor upper surface;
4) the service hoisting system promotes the 3rd pipe in derrick from the automatic transport slideway, be located by hydraulic tongs, and the linkage section of the pipe that exposes with the rig floor upper surface links on carrying out and connect, and namely becomes the tubing string of one or three one;
5) the service hoisting system is upwards mentioned tubing string, and by pipe-grabbing mechanical arm the tubing string thribble is discharged in the pipe setback;
6) repeating step 1)～step 5), until end of operation;
The method of operating of the main Hoisting System on step 2, the lower pipe in the button operating process may further comprise the steps:
1) main Hoisting System is extracted a tubing string in the pipe setback and is inserted and transfer by rotating disk to the main shaft mouth, until expose for the linkage section that connects another tubing string at the rig floor upper surface, and clamping fixed by the fluid cylinder in the main shaft mouth;
2) main Hoisting System is from extracting another tubing string in derrick in the pipe setback, is located and links on carrying out and connect with tubing string in the main shaft mouth by hydraulic tongs;
3) to have finished two endowels of connection with the fluid cylinder gripper in the main shaft mouth descending with firmlying, until expose linkage section for another tubing string of connection at the rig floor upper surface;
4) main Hoisting System is located by hydraulic tongs from extracting the 3rd endowel in the pipe setback in derrick, and links on carrying out with linkage section that the rig floor upper surface exposes tubing string and connect;
5) it is descending firmly to have finished the tubing string continuation that connects with the fluid cylinder gripper in the main shaft mouth, until expose for the linkage section that connects another tubing string at the rig floor upper surface;
6) repeating step 1)～step 5), until the tubing string thribble that needs in the pipe setback is transferred in the main shaft mouth successively, i.e. complete operation;
Main Hoisting System and service hoisting system share a hydraulic tongs, and service hoisting system pipe is inserted in upper button the in the hydraulic pressure rat hole, and tubing string is inserted in the main shaft mouth upper button and can not finishes simultaneously, other the time main and auxiliary Hoisting System all can the while operation;
Lift pipe string of the present invention with get rid of tubing string Job Operations method and may further comprise the steps:
The using method of step 3, main Hoisting System may further comprise the steps;
1) main Hoisting System from the main shaft mouth upwards pipe, when rising to one section tubing string in the derrick, the clamping fixed tube post of fluid cylinder in the main shaft mouth is by the hydraulic tongs shackle;
2) main Hoisting System will trip out the shackle tubing string and be placed in the pipe setback;
3) repeating step 1)～step 2), main Hoisting System continues to promote the tubing string in the main shaft mouth, until the tubing string that the needs in the well head are changed progressively rises on the main shaft mouth, by hydraulic tongs section by section after the tubing string shackle, successively tubing string is placed in the pipe setback again, i.e. end of operation;
The method of operating of step 4, auxiliary Hoisting System may further comprise the steps;
1) pipe-grabbing mechanical arm is picked up tubing string in the pipe setback, and it is placed in the hydraulic pressure rat hole, exposes the position that the top section of a pipe connects by capable tubing string to the rig floor upper surface of staying of the fluid cylinder gripper in the hydraulic pressure rat hole;
2) hydraulic tongs will expose top tubing string shackle, split into single pipe;
3) the service hoisting system is the single pipe of shackle, by the automatic transport slideway be thrown to rig floor below;
4) remaining tubing string lives in to walk to the position that the rig floor upper surface exposes the connection of pipe bottom, middle part by the fluid cylinder gripper in the hydraulic pressure rat hole;
5) the hydraulic tongs middle part tubing string that will expose continues shackle, splits into single pipe;
6) the service hoisting system is by the automatic transport slideway, with the single pipe of residue in the single pipe of shackle and the hydraulic pressure rat hole be thrown to respectively rig floor below;
7) repeating step 1)～step 6), the service hoisting system inserts the tubing string in the pipe setback respectively in the hydraulic pressure rat hole, after the hydraulic tongs shackle, more single pipe is thrown to respectively rig floor below, namely finish and get rid of the pipe operation.
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| CN2012103973742A CN102979465A (en) | 2012-10-18 | 2012-10-18 | Multifunctional maritime workover rig and operation method thereof |
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| CN2012103973742A CN102979465A (en) | 2012-10-18 | 2012-10-18 | Multifunctional maritime workover rig and operation method thereof |
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Cited By (6)
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| CN105781445A (en) * | 2016-03-29 | 2016-07-20 | 宝鸡石油机械有限责任公司 | Continuously moving oil rig as well as pull-out and run-in methods thereof |
| CN110792399A (en) * | 2018-08-03 | 2020-02-14 | 国民油井华高有限公司 | Hoisting system, robotic manipulator and method for handling tubulars on a drilling rig and tubular handling system and method |
| US11834914B2 (en) | 2020-02-10 | 2023-12-05 | National Oilwell Varco, L.P. | Quick coupling drill pipe connector |
| US11891864B2 (en) | 2019-01-25 | 2024-02-06 | National Oilwell Varco, L.P. | Pipe handling arm |
| US11988059B2 (en) | 2019-02-22 | 2024-05-21 | National Oilwell Varco, L.P. | Dual activity top drive |
| US12215554B2 (en) | 2018-08-03 | 2025-02-04 | National Oilwell Varco, L.P. | End effectors for automated pipe handling |
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| CN105781445A (en) * | 2016-03-29 | 2016-07-20 | 宝鸡石油机械有限责任公司 | Continuously moving oil rig as well as pull-out and run-in methods thereof |
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| CN110792399A (en) * | 2018-08-03 | 2020-02-14 | 国民油井华高有限公司 | Hoisting system, robotic manipulator and method for handling tubulars on a drilling rig and tubular handling system and method |
| US12215554B2 (en) | 2018-08-03 | 2025-02-04 | National Oilwell Varco, L.P. | End effectors for automated pipe handling |
| US11891864B2 (en) | 2019-01-25 | 2024-02-06 | National Oilwell Varco, L.P. | Pipe handling arm |
| US11988059B2 (en) | 2019-02-22 | 2024-05-21 | National Oilwell Varco, L.P. | Dual activity top drive |
| US11834914B2 (en) | 2020-02-10 | 2023-12-05 | National Oilwell Varco, L.P. | Quick coupling drill pipe connector |
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Application publication date: 20130320 |