CN103850658B - Intelligent electric drifting device adopting and method - Google Patents
Intelligent electric drifting device adopting and method Download PDFInfo
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- CN103850658B CN103850658B CN201410050923.8A CN201410050923A CN103850658B CN 103850658 B CN103850658 B CN 103850658B CN 201410050923 A CN201410050923 A CN 201410050923A CN 103850658 B CN103850658 B CN 103850658B
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Abstract
The invention discloses a kind of intelligent electric drifting device adopting and method, belong to oil and natural gas production field.Described device comprises: elevator, suspension ring, hook, running block, wire rope, top fixed pulley, derrick, end fixed pulley, cylinder, rear shaft coupling, reducer, brake, front shaft coupling, switched reluctance machines, the first power cable, control box, signal-transmitting cable, control unit, the second power cable, industrial power lead-out terminal, upper stroke switch, lower stroke switch, chassis and earth anchor.Described method comprises the staff of well head by the button in operation control box, oil pipe in well is risen to ground or transfers in well by oil pipe; By the speed governing button in adjustment control box, regulate the speed of service promoting oil pipe and lower drain line.Apparatus of the present invention and method have that intelligence degree is high, operating efficiency is high, safe and reliable, simple to operate flexibly, the characteristic such as visual field is broad, the needs of workover treatment can be met better.
Description
Technical field
The present invention relates to a kind of on-the-spot well repairing device and control method of oil and natural gas production field, specifically a kind of intelligent electric drifting device adopting and method.
Background technology
Tractor hoist belongs to the well workover machinery in petroleum recovering equipment, plays lower tubular column, oil well pump, downhole tool and carry out the work of salvaging etc. when being mainly used in oil-water well operation.Current China workover treatment by land equipment used mainly contains crawler-type pigging machine, wheeled tractor hoist, workover rig etc.Wherein the consumption of crawler-type pigging machine is maximum, and national recoverable amount about has more than 3000 platforms, is mainly used in oil well light maintenance operation.
Oil pipe tripping operation mainly comprises two parts, oil pipe in well is risen to ground or is transferred in well by oil pipe.When promoting oil pipe, roller of tractor hoist rotates forward, wire rope drives oil pipe to move upward, when connecing hub under oil pipe and exceeding well head, cylinder stops the rotation, elevator is placed into well head by the staff of well head, and then cylinder reversely rotates, oil pipe decline until next root oil pipe on connect hub and sit on elevator; During lower drain line, cylinder first rotates forward, connect hub under making oil pipe and exceed well head, the elevator of well head is shifted out well head by the staff of well head, back roll reversely rotate, oil pipe starts to enter in well, and then elevator is placed into well head by the staff of well head, and cylinder reversely rotates until oil pipe connects hub and sit on elevator always.
Tractor hoist is by special operated by personnel, and staff comes rotating and the rotating speed of index drum in tractor hoist control room by pulling relevant action bars.Because derrick is in the middle of tractor hoist and well head, tractor hoist staff must pay close attention to the situation of well head and the height of accurate control oil pipe through derrick from control room, and slightly carelessness just can cause the accident.During lower drain line, staff by repeatedly gathering the method tried under the staff commander of well head, could must contact connecing under oil pipe the upper box cupling of oil pipe in hub and well head.According to the oil production technology in current oil field, general R a T is all be the single connection of about 8 meters by length, and in operation, tractor hoist carries out mentioning or transferring in units of single.As can be seen here, must concentrate one's energy for a long time during operated by personnel's tractor hoist to watch the situation of well head attentively and the height of accurate control oil pipe, labour intensity is comparatively large, and operating procedure is also more complicated.The operation with traditional of tractor hoist pulls action bars based on special staff in tractor hoist control room, and under normal circumstances, operation team is per hour can be promoted or the quantity of lower drain line is no more than 70.
Through finding the literature search of prior art, Chinese invention patent (201110206972.2), Chinese utility model patent (201120238629.1, 201020175311.9, 200820218538.X, 200420053570.9, 99243437.8, 94225440.6, 02270736.0, 200820054835.5, 201320058679.0) and journal article " Developing Application of TJ70DB electric well dredger " (author Yuan Lifeng) and " development of novel hydraulic wheeled tractor hoist " (author Chen Yiliang etc.), these documents design or disclosed tractor hoist in, all be provided with control room or console, all need special operated by personnel's tractor hoist.Thus, in operation, the operation of tractor hoist still pulls action bars based on special staff in control room.
Summary of the invention
The object of the invention is to the problems referred to above for existing in current workover treatment, a kind of intelligent electric drifting device adopting and method are provided, can the height of control oil pipe accurately and timely, be not equipped with special operating room or control room, decrease the number that workover treatment needs staff, there is little, real-time, the simple to operate characteristic flexibly of volume, and solve the deficiency in above-mentioned background technology, to meet the needs at workover treatment scene better.
For achieving the above object, the present invention is achieved by the following technical solutions:
A kind of intelligent electric drifting device adopting, comprises elevator, suspension ring, hook, running block, wire rope, top fixed pulley, derrick, end fixed pulley, cylinder, rear shaft coupling, reducer, brake, front shaft coupling, switched reluctance machines, the first power cable, control box, signal-transmitting cable, control unit, the second power cable, industrial power lead-out terminal, upper stroke switch, lower stroke switch, chassis and earth anchor; Described derrick, end fixed pulley, cylinder, reducer, brake, switched reluctance machines and control unit are all fixed on chassis; Chassis by earth anchorage on the ground, is not moved when ensureing that whole device works and turns on one's side; The hub that connects of oil pipe sits on elevator, and described elevator hangs over the lower end of suspension ring, and the upper end of described suspension ring hangs on hook, and the upper end of described hook is connected with running block, described running block connecting steel wire ropes; Described top fixed pulley is fixed on the most significant end of derrick, and the center of top fixed pulley is on the center line of well head; Described wire rope passes from the wheel hub of top fixed pulley, and is connected on cylinder by end fixed pulley; Described cylinder rear end is by rear shaft coupling connection reducer, described reducer rear end connecting brake, described brake rear end is by front shaft coupling connecting valve reluctance motor, described switched reluctance machines rear end is by the first power cable connection control unit, described control unit connects industrial power lead-out terminal by the second power cable, described control box, upper stroke switch, lower stroke switch are by signal-transmitting cable connection control unit, described upper stroke switch is fixed on the upper end of derrick, the below of top fixed pulley; Described lower stroke switch is fixed on the lower end of derrick, the top of well head; When hook upwards runs always, when exceeding a certain maximum displacement, hook touches upper stroke switch, and upper stroke switch sends the signal of shutdown switch reluctance motor rotation to control unit; When hook runs downwards always, during lower than a certain least displacement, hook touches lower stroke switch, and lower stroke switch sends the signal of shutdown switch reluctance motor rotation to control unit.There is speed governing knob in described control box, promote oil pipe button and lower drain line button.
A kind of intelligent electric drifting method, comprises the steps:
1) clear up the scene of oil well to be repaired, intelligent electric drifting device adopting is placed on distance well head a distance, make the center of pushing up fixed pulley on well head center line; Make earth anchor, chassis is fixed on the ground; Control unit is connected on the industrial power lead-out terminal of oil wells in field by the second power cable;
2) oil pipe of whole oil well pipe is enhanced from oil well, and be put on the oil pipe row on well site, comprise the steps:
A. the hub that connects of oil pipe is sat on elevator, the lower end of suspension ring is hung on elevator;
B. press the lifting oil pipe button of control box, control unit receives switched reluctance machines and rotates forward signal, and gauge tap reluctance motor rotates forward, and exports certain rotating speed and moment of torsion; The premenstrual shaft coupling of switched reluctance machines drives brake to rotate, reduce after rotating speed, raising moment of torsion through reducer, through after shaft coupling drive cylinder rotate, cylinder is with certain speed and moment of torsion lay winding wire ropes, wire rope through end fixed pulley, push pulley and running block and hook produced to the pulling force being greater than oil pipe gravity, hook drives oil pipe to move upward through suspension ring and elevator; When a upper oil pipe proposes well head completely, next root oil pipe connects hub when exceeding well head certain altitude, unclamp and promote oil pipe button, control unit receives switched reluctance machines and to stop operating signal, and gauge tap reluctance motor stops operating;
C. a upper oil pipe is parked in well head overhead; Another elevator is placed in well head;
D. press the lower drain line button of control box, through the process contrary with step b, when next root oil pipe connecing hub and sitting on another elevator, unclamp lower drain line button, switched reluctance machines stops operating;
E. the staff of well head uses hydraulic tongs to a upper oil pipe shackle, and an oil pipe and oil well pipe are departed from; The oil pipe of disengaging caught by use instrument, and is placed on by oil pipe on the oil pipe row on well site; Suspension ring are separated with elevator, and suspension ring are resetted;
F. repeat above-mentioned steps a-e, the oil pipe of whole oil well pipe is all enhanced, be placed on the oil pipe row on well site;
3) carry out workover treatment, after well workover terminates, the oil pipe of oil well pipe is all transferred in well and goes, comprise the steps:
The hub that connects of the oil pipe g. arranged by oil pipe sits on elevator, hangs on elevator by the lower end of suspension ring; Press and promote oil pipe button, hook drives the oil pipe oil pipe left on well site to be discharged in well head overhead;
H. when connecing under oil pipe that in hub and well head, the upper box cupling of oil pipe contacts, unclamping and promoting oil pipe button, use on hydraulic tongs and detain, make the oil pipe above well head become a part for tubing string; Press and promote oil pipe button, hook drives tubing string to move upward certain length, unclamps and promotes oil pipe button; The elevator of well head is moved away from, is placed near oil pipe row;
I. press lower drain line button, oil pipe starts to move downward; When elevator sits on well head, unclamp lower drain line button; Suspension ring are separated with elevator, and suspension ring are resetted;
J. repeat above-mentioned steps g-i, upper for oil pipe row all oil pipes are all transferred in oil well.
When needing the speed of service increasing oil pipe, the staff of well head increases the angular displacement of speed governing button, control box sends corresponding angular displacement signal, control unit receives the signal increasing switched reluctance machines rotating speed, the rotating speed of gauge tap reluctance motor increases, through front shaft coupling, brake, reducer, after the transmission of shaft coupling, the rotating speed that cylinder was wound around or decontroled wire rope also obtain increase, thus increases the speed of service of oil pipe.
When needing the speed of service reducing oil pipe, the staff of well head reduces the angular displacement of speed governing button, control box sends corresponding angular displacement signal, control unit receives the signal reducing switched reluctance machines rotating speed, the rotating speed of gauge tap reluctance motor reduces, through front shaft coupling, brake, reducer, after the transmission of shaft coupling, the rotating speed that cylinder was wound around or decontroled wire rope also obtain reduction, thus reduces the speed of service of oil pipe.
When the unexpected power-off of the industrial power of oil wells in field, brake action, reducer, rear shaft coupling and cylinder are stopped operating immediately, thus make running block, hook, suspension ring, elevator and the oil pipe stop motion immediately above well head, the oil pipe avoiding well head is pounded to well head with freely falling body, causes the accident; When the industrial power of oil wells in field restores electricity, switched reluctance machines starts Driving Torque, staff's hand-reset brake.
Compared with prior art, the present invention has following outstanding substantive distinguishing features and significant advantage:
The characteristic that the present invention utilizes switched reluctance machines frequently to commutate, adopts the rotating forward of control box gauge tap reluctance motor, rotates backward and speed governing, achieve and quickly and reliably promote oil pipe and lower drain line in workover treatment.Not setting operation room or control room, device described in unspecial operated by personnel, the staff of well head just can complete the work promoting oil pipe and lower drain line, decreases the staff that workover treatment needs, drastically increases operating efficiency; Adopt operating case to control the operation of package unit, simple to operate, it is flexible, convenient to use; The staff of well head can observe the situation of well head well, and visual field is broad, when operating described device, can to make reacting timely in the very first time for various situation; During lower drain line, exactly oil pipe can be transferred once and put in place, connect the upper box cupling of oil pipe in hub and well head under making oil pipe and contact, shorten the time of lower drain line; When switched reluctance machines rotating speed 1500r/min, oil pipe number of mentioning or transfer per hour is no less than 90; When hook upwards runs and exceedes a certain maximum displacement or run lower than a certain least displacement downwards, control unit can make switched reluctance machines stop operating, to avoid contingent accident; When the unexpected power-off of the industrial power of oil wells in field, device can be braked immediately, ensures that the oil pipe of well head is not pounded to well head with freely falling body.Described device and method really achieves the intellectuality of workover treatment, simplification, rapid operation.
Accompanying drawing explanation
Fig. 1 is apparatus structure principle schematic of the present invention.
Fig. 2 is chassis of the present invention and earth anchor principle schematic.
Fig. 3 is control box illustrative view of functional configuration of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the invention are elaborated.
As shown in Figure 1, a kind of intelligent electric drifting device adopting, comprises elevator 5, suspension ring 6, hook 7, running block 8, wire rope 12, top fixed pulley 10, derrick 11, end fixed pulley 14, cylinder 15, rear shaft coupling 16, reducer 17, brake 18, front shaft coupling 19, switched reluctance machines 20, first power cable 21, control box 3, signal-transmitting cable 13, control unit 22, second power cable 23, industrial power lead-out terminal 24, upper stroke switch 9, lower stroke switch 4, chassis 25 and earth anchor 26, described derrick 11, end fixed pulley 14, cylinder 15, reducer 17, brake 18, switched reluctance machines 20 and control unit 22 are all fixed on chassis 25, chassis 25 is fixed on the ground by earth anchor 26, and in the present embodiment, as shown in Figure 2, on chassis 25, periphery lays six roots of sensation earth anchor 26, is fixed on the ground by package unit, is not moved and turns on one's side when ensureing that whole device works, the hub that connects of oil pipe 2 sits on elevator 5, described elevator 5 hangs over the lower end of suspension ring 6, the upper end of described suspension ring 6 hangs on hook 7, the upper end of described hook 7 is connected with running block 8, described running block 8 connecting steel wire ropes 12, in the present embodiment, the weight of all oil pipes is reduced by 5/6 by running block 8, makes wire rope 12 only bear 1/6 of all tubing weight, described top fixed pulley 10 is fixed on the most significant end of derrick 11, and the center of top fixed pulley 10 is on the center line of well head 1, described wire rope 12 passes from the wheel hub of top fixed pulley 10, and is connected on cylinder 15 by end fixed pulley 14, described cylinder 15 rear end is by rear shaft coupling 16 connection reducer 17, described reducer 17 rear end connecting brake 18, described brake 18 rear end is by front shaft coupling 19 connecting valve reluctance motor 20, described switched reluctance machines 20 rear end is by the first power cable 21 connection control unit 22, described control unit 22 connects industrial power lead-out terminal 24 by the second power cable 23, described control box 3, upper stroke switch 9, lower stroke switch 4 is by signal-transmitting cable 13 connection control unit 22, described upper stroke switch 9 is fixed on the upper end of derrick 11, the below of top fixed pulley 10, described lower stroke switch 4 is fixed on the lower end of derrick 11, the top of well head 1.There is speed governing knob 31 in described control box 3, promote oil pipe button 32 and lower drain line button 33.
In the present embodiment, Jiangsu Taixing City Heng Ya reductor Co., Ltd NGW92 type planetary reducer selected by described reducer 17.Promote or lower drain line, whole device is needed frequently to commutate, reducer also needs frequent commutation, planet-cycloid reducer and planetary reducer all can meet this requirement, power due to switched reluctance machines 20 is 55KW, the power of planet-cycloid reducer is smaller, therefore only has planetary reducer suitable.
In the present embodiment, described brake 18 uses Jiaozhuo, Henan brake factory YWZ300 type power hydraulic pressure normally closed brake.Described switched reluctance machines 20 uses Shandong Kehui Power Automation Co., Ltd. SRM250M-15 type switched reluctance machines.The industrial power lead-out terminal 24 of oil wells in field exports three-phase 380VAC, for control unit 22.
For embodiment, intelligent electric drifting method of the present invention is further illustrated below with lifting oil pipe and lower drain line during on-the-spot workover treatment:
1) clear up the scene of oil well to be repaired, intelligent electric drifting device adopting is placed on distance well head 1 a distance, make the center of pushing up fixed pulley 10 on well head 1 center line; Make six roots of sensation earth anchor 26, chassis 25 is fixed on the ground; Control unit 22 is connected on the industrial power lead-out terminal 24 of oil wells in field by the second power cable 23;
2) oil pipe 2 of whole oil well pipe is enhanced from oil well, and be put on the oil pipe row on well site, comprise the steps:
A. the hub that connects of oil pipe 2 is sat on elevator 5, the lower end of suspension ring 6 is hung on elevator 5;
B. press the lifting oil pipe button 32 of control box 3, control unit 22 receives switched reluctance machines 20 and rotates forward signal, and gauge tap reluctance motor 20 rotates forward, and exports certain rotating speed and moment of torsion; The premenstrual shaft coupling 19 of switched reluctance machines 20 drives brake 18 to rotate, reduce after rotating speed, raising moment of torsion through reducer 17, through after shaft coupling 16 drive cylinder 15 to rotate, cylinder 15 is with certain speed and moment of torsion lay winding wire ropes 12, wire rope 12 through end fixed pulley 14, push pulley 10 and the running block 8 pairs of hooks 7 produce the pulling force being greater than oil pipe 2 gravity, hook 7 drives oil pipe 2 to move upward through suspension ring 6 and elevator 5; When a upper oil pipe proposes well head 1 completely, next root oil pipe 2 connects hub when exceeding well head 1 certain altitude, unclamp and promote oil pipe button 32, control unit 22 receives switched reluctance machines 20 and to stop operating signal, and gauge tap reluctance motor 20 stops operating;
C. a upper oil pipe 2 is parked in well head 1 overhead; Another elevator 5 is placed in well head 1;
D. press the lower drain line button 33 of control box 3, through the process contrary with step b, when next root oil pipe 2 connecing hub and sitting on another elevator 5, unclamp lower drain line button 33, switched reluctance machines 20 stops operating;
E. the staff of well head uses hydraulic tongs to the shackle of a upper oil pipe 2, and an oil pipe 2 and oil well pipe are departed from; The oil pipe 2 of disengaging caught by use instrument, and is placed on by oil pipe 2 on the oil pipe row on well site; Suspension ring 6 are separated with elevator 5, and suspension ring 6 are resetted;
F. repeat above-mentioned steps a-e, the oil pipe of whole oil well pipe is all enhanced, be placed on the oil pipe row on well site;
3) carry out workover treatment, after well workover terminates, the oil pipe of oil well pipe is all transferred in well and goes, comprise the steps:
The hub that connects of the oil pipe 2 g. arranged by oil pipe sits on elevator 5, is hung over the lower end of suspension ring 6 on elevator 5; Press and promote oil pipe button 32, hook 7 drives oil pipe 2 oil pipe left on well site to be discharged in well head 1 overhead;
H. when oil pipe connects that in hub and well head, the upper box cupling of oil pipe contacts for 2 times, unclamp and promote oil pipe button 32, use on hydraulic tongs and detain, make the oil pipe 2 above well head 1 become a part for tubing string; Press and promote oil pipe button 32, hook 7 drives tubing string to move upward certain length, unclamps and promotes oil pipe button 32; The elevator 5 of well head 1 is moved away from, is placed near oil pipe row;
I. press lower drain line button 33, oil pipe 2 starts to move downward; When elevator 5 sits on well head 1, unclamp lower drain line button 33; Suspension ring 6 are separated with elevator 5, and suspension ring 6 are resetted;
J. repeat above-mentioned steps g-i, upper for oil pipe row all oil pipes are all transferred in oil well.
When needing the speed of service increasing oil pipe, the staff of well head increases the angular displacement of speed governing button 31, control box 3 sends corresponding angular displacement signal, control unit 22 receives the signal increasing switched reluctance machines rotating speed, carry out conversion process to three-phase 380VAC to make it to become the control signal increasing switched reluctance machines rotating speed, the rotating speed of gauge tap reluctance motor 20 increases, through front shaft coupling 19, brake 18, reducer 17, the transmission of rear shaft coupling 16, the rotating speed that cylinder 15 was wound around or decontroled wire rope 12 also obtain increase, thus increase the speed of service of oil pipe.
When needing the speed of service reducing oil pipe, the staff of well head reduces the angular displacement of speed governing button 31, control box 3 sends corresponding angular displacement signal, control unit 22 receives the signal reducing switched reluctance machines rotating speed, carry out conversion process to three-phase 380VAC to make it to become the control signal reducing switched reluctance machines rotating speed, the rotating speed of gauge tap reluctance motor 20 reduces, through front shaft coupling 19, brake 18, reducer 17, the transmission of rear shaft coupling 16, the rotating speed that cylinder 15 was wound around or decontroled wire rope 12 also obtain reduction, thus reduce the speed of service of oil pipe.
When the unexpected power-off of the industrial power of oil wells in field, brake 18 action, reducer 17, rear shaft coupling 16 and cylinder 15 are stopped operating immediately, thus make running block 8 above well head 1, hook 7, suspension ring 6, elevator 5 and oil pipe stop motion immediately, the oil pipe avoiding well head is pounded to well head 1 with freely falling body, causes the accident; When the industrial power of oil wells in field restores electricity, switched reluctance machines 20 starts Driving Torque, staff's hand-reset brake 18.
Due to staff's carelessness or other reason of well head, cause hook 7 to run always, when upwards operation exceedes a certain maximum displacement or runs lower than a certain least displacement downwards, touch upper stroke switch 9 or lower stroke switch 4, thus the signal of shutdown switch reluctance motor 20 rotation is sent to control unit 22, make hook out of service, to avoid contingent accident.
Claims (1)
1. an intelligent electric drifting method, is characterized in that the concrete steps of the method are:
1) clear up the scene of oil well to be repaired, intelligent electric drifting device adopting is placed on distance well head (1) a distance, make the center of pushing up fixed pulley (10) on well head (1) center line; Make earth anchor (26), chassis (25) are fixed on the ground; Control unit (22) is connected on the industrial power lead-out terminal (24) of oil wells in field by the second power cable (23);
2) oil pipe (2) of whole oil well pipe is enhanced from oil well, and be put on the oil pipe row on well site, comprise the steps:
A. the hub that connects of oil pipe (2) is sat on elevator (5), the lower end of suspension ring (6) is hung on elevator (5);
B. press the lifting oil pipe button (32) of control box (3), control unit (22) receives switched reluctance machines (20) and rotates forward signal, and gauge tap reluctance motor (20) rotates forward, and exports certain rotating speed and moment of torsion; Switched reluctance machines (20) premenstrual shaft coupling (19) drives brake (18) to rotate, reduce after rotating speed, raising moment of torsion through reducer (17), through after shaft coupling (16) drive cylinder (15) rotate, cylinder (15) is with certain speed and moment of torsion lay winding wire ropes (12), wire rope (12) through end fixed pulley (14), push pulley (10) and running block (8) and hook (7) produced to the pulling force being greater than oil pipe (2) gravity, hook (7) moves upward through suspension ring (6) and elevator (5) drive oil pipe (2); When a upper oil pipe proposes well head (1) completely, next root oil pipe (2) connects hub when exceeding well head (1) certain altitude, unclamp and promote oil pipe button (32), control unit (22) receives switched reluctance machines (20) and to stop operating signal, and gauge tap reluctance motor (20) stops operating;
C. a upper oil pipe (2) is parked in well head (1) overhead; Another elevator (5) is placed in well head (1);
D. press the lower drain line button (33) of control box (3), the process that process is contrary with step b, when next root oil pipe (2) connecing hub and sitting on another elevator (5), unclamp lower drain line button (33), switched reluctance machines (20) stops operating;
E. the staff of well head uses hydraulic tongs to the shackle of a upper oil pipe (2), and an oil pipe (2) and oil well pipe are departed from; The oil pipe (2) of disengaging caught by use instrument, and is placed on by oil pipe (2) on the oil pipe row on well site; Suspension ring (6) are separated with elevator (5), and suspension ring (6) are resetted;
F. repeat above-mentioned steps a-e, the oil pipe of whole oil well pipe is all enhanced, be placed on the oil pipe row on well site;
3) carry out workover treatment, after well workover terminates, the oil pipe of oil well pipe is all transferred in well and goes, comprise the steps:
The hub that connects of the oil pipe (2) g. arranged by oil pipe sits on elevator (5), is hung over the lower end of suspension ring (6) on elevator (5); Press and promote oil pipe button (32), hook (7) drives oil pipe (2) oil pipe left on well site to be discharged in well head (1) overhead;
H. when connecing under oil pipe (2) that in hub and well head, the upper box cupling of oil pipe contacts, unclamping and promoting oil pipe button (32), use on hydraulic tongs and detain, make the oil pipe (2) of well head (1) top become a part for tubing string; Press and promote oil pipe button (32), hook (7) drives tubing string to move upward certain length, unclamps and promotes oil pipe button (32); The elevator of well head (1) (5) is moved away from, is placed near oil pipe row;
I. press lower drain line button (33), oil pipe (2) starts to move downward; When elevator (5) sits on well head (1), unclamp lower drain line button (33); Suspension ring (6) are separated with elevator (5), and suspension ring (6) are resetted;
J. repeat above-mentioned steps g-i, upper for oil pipe row all oil pipes are all transferred in oil well.
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| CN201410050923.8A CN103850658B (en) | 2014-02-14 | 2014-02-14 | Intelligent electric drifting device adopting and method |
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| CN104775766B (en) * | 2015-04-29 | 2017-02-01 | 中原总机石油设备有限公司 | Skid-mounted rotary tractor hoist |
| CN109854188A (en) * | 2019-03-29 | 2019-06-07 | 东营市金亿来石油机械有限公司 | A kind of petroleum well workover downhole operation well head special purpose robot |
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| CN1395023A (en) * | 2001-11-21 | 2003-02-05 | 中国石化胜利油田有限公司胜利采油厂 | Quick workover process |
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| CN103850658A (en) | 2014-06-11 |
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