CN101942976A - Drill rod joint positioning and controlling method of continuous cycle drilling system - Google Patents
Drill rod joint positioning and controlling method of continuous cycle drilling system Download PDFInfo
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Abstract
A drill rod joint positioning and controlling method of a continuous circulation drilling system is used in the technical field of petroleum drilling. The method comprises the step of positioning drill rod joints when the drill rod joints are unscrewed or screwed in the drilling connection-making process, wherein a laser distance meter detects the mark I, mark III or mark II of the lower drill rod of a top drive unit to distinguish the position of the drill rod joints; a lifting top drive unit is used to raise or drop the drill rod; and a back-up wrench is used to screw or unscrew the drill rod joints. The effects of the invention are as follows: the drill rod joints can be accurately positioned in the host machine sealing cavity of the continuous cycle drilling system, thus ensuring that the back-up wrench in the cavity can successfully clamp the drill rod joints; and the relative position for butting the drill rod joints can be correctly judged, thus increasing the safety and reliability of the screwing or unscrewing operation and reducing hidden troubles.
Description
Technical field
The present invention relates to the drilling equipment field in the petroleum industry, specifically is that a kind of continuous circulating drilling system is realized the accurately control method of location of tool joint when making up a joint operation.
Background technology
At present, continuous circulating drilling system can keep mud during making up a joint continuous circulation, thereby during whole creeping into, realize stable equivalent circulating density and the discharge of continual drilling cuttings, the bottom hole pressure surge of avoiding termination of pumping and turn on pump circulation time to cause, improve borehole condition and drilling safety comprehensively, effectively reduce drilling failure.
When making up a joint, continuously circulating drilling system must in the cavity assembly of main frame, finish tool joint on the shackle operation, and operating personnel can't directly observe situation in the chamber.Guarantee can complete successfully in the cavity assembly butt joint and the last shackle of joint, one of key just is the accurate location of tool joint.The target of tool joint location, the first will guarantee that tool joint accurately locatees, and make back-up tong can tighten the bottom tool joint, realize smooth shackle; It two is to guarantee female joint between second envelope flashboard and blind rams, and after tool joint separated, blind rams can be closed smoothly, forms upper and lower two chambers of isolation; It three is when tool joint is docked, and can accurately judge the relative position of pin and box sub, and then in time adjust controlling parameter, guarantees smooth make-up of tool joint and last button.
Because therefore operating personnel can't must solve the orientation problem of tool joint by necessary control means and measure by the accurate position of visualization cavity assembly spigot.The external at present main method that adopts tool joint and flashboard to touch positions, concrete implementation step is: promote main frame earlier to certain altitude, and then lifting drill string, after tool joint is carried to the chamber, close first envelope flashboard and transfer main frame, when touching, first envelope flashboard and tool joint stop to transfer, then close second envelope flashboard, promote main frame once more, stop to promote when second envelope flashboard and tool joint are touched, tool joint just can be accurately positioned on the position of needs like this.Though said method is simple to operate, there is following problem: the one, when promoting or transferring main frame, partly seal flashboard and must embrace the drilling rod body, the too early wearing and tearing of rubber be may cause and its sealing performance and application life influenced; The 2nd, when flashboard and tool joint are touched, cause flashboard to damage easily, influence flashboard application life; In addition, when utilizing four long stroke hydraulic cylinders liftings or transferring main frame, there is the stationary problem of hydraulic cylinder.
The tool joint position control method that the present invention proposes, be to utilize photoelectric sense technology and baffle mechanism, in the cavity assembly, realize the accurate location of tool joint, rubber wearing and tearing that caused when having avoided mechanical flashboard location and flashboard damage, and removed long stroke hydraulic cylinder supporting leg, reduced potential faults.
Summary of the invention
The objective of the invention is: a kind of tool joint position control method of continuous circulating drilling system is provided, solves continuous circulating drilling system and in main frame cavity assembly, realize the accurately control problem of location of tool joint.Utilize photoelectric sense technology and baffle mechanism, in main frame cavity assembly, realize the accurate location of tool joint, make back-up tong clamping tool joint smoothly in the chamber, and can correctly judge the relative position of banjo fixing butt jointing, guarantee that blind rams can be closed smoothly after shackle, form two chambers up and down of isolating, and tool joint can be docked smoothly when last button, thereby improve the security reliability that goes up shackle control.
The technical solution used in the present invention is: the tool joint position control method of continuous circulating drilling system, utilizing laser range finder, displacement transducer A, displacement transducer B, rotary encoder, pressure sensor and baffle mechanism to detect and control the top drives and the motion of main frame drill pipe tong, thereby in the cavity assembly of main frame, realize the accurate location of drilling rod top connection, make back-up tong clamping drilling rod top connection smoothly in the chamber, and can correctly judge the position of new stacks joint, the security reliability of shackle control in the raising.
The continuous tool joint position control method of circulating drilling system comprises the tool joint location when drilling well makes up a joint shackle and last button in the process.
Tool joint during shackle location: when laser range finder detects the top and drives mark I on the drilling rod of bottom, stop to creep into and utilize winch to promote the top and drive and drilling rod; When laser range finder detects the top and drives mark III on the drilling rod of bottom, stop to promote; After starting drilling well power slip clamping drilling rod, drive, utilize the pressure sensor on the dead line anchor to detect hook load, guarantee power slip dental lamina firm grip drilling rod and the weight of bearing whole drilling rod with caving under the winch; Meanwhile, push up the mark II that drives on the drilling rod of bottom, illustrate that then drilling rod top connection present position is incorrect if laser range finder detects, back-up tong can not clamp the drilling rod top connection, must unclamp the power slip dental lamina this moment, and promote the top and drive and drilling rod, positions again; If do not detect the signal of mark II, illustrate that then drilling rod top connection location is correct; Simultaneously, utilize the rotary encoder that is installed in the displacement transducer B on the top drive guide rail or is installed on the winch drum to detect the position that drive on the top, above-mentioned location situation is confirmed; After the drilling rod top connection is accurately located, close back-up tong clamping drilling rod top connection in the chamber, start Power Tong dental lamina clamping top and drive the bottom drilling rod; After closing first envelope flashboard and second envelope flashboard, beginning shackle operation, utilize drill pipe tong and compensating chain device to dismantle the drilling rod top connection after, promotes the top by winch and drive the bottom drilling rod, and it is up to drive drill pipe tong; In lifting process, utilization is installed in the displacement transducer B on the top drive guide rail or is installed in rotary encoder on the winch drum and the displacement transducer A on the main frame upper junction plate detects and determines the position that the bottom drilling rod is driven on the top, when determining that the top is driven the bottom drilling rod and is promoted to blind rams top, stop to promote; After finishing the switching of circulation of drilling fluid passage, close blind rams, finish the shackle operation.
The tool joint location in last when button: at first promote the top and drive, new stacks is carried top to main frame with winch; After the baffle plate oil cylinder of startup baffle mechanism is closed baffle plate, drive with caving under the winch, and detect hook load, judge with this whether new stacks joint touches with baffle plate, when definite and baffle plate touch, stop to transfer by the pressure sensor on the dead line anchor; Utilize the Power Tong dental lamina to clamp new stacks, and drive to cooperate with the top and finish new stacks and top and drive and go up the button operation between the drilling rod of bottom; Unclamp the Power Tong dental lamina then and open baffle plate, drive with caving under the winch, new stacks joint is put into the epicoele of main frame, transfer displacement with the rotary encoder detection and the definite new stacks joint that are installed in the displacement transducer B on the top drive guide rail or be installed on the winch drum when transferring, when new stacks joint arrives desired location, stop to transfer; After with balanced compensated oil cylinder drill pipe tong being promoted to setting height, starting the Power Tong dental lamina and clamp new stacks, and close first envelope flashboard; Opening blind rams, and after finishing the switching of circulation of drilling fluid passage, it is descending to utilize balanced compensated hydraulic oil cylinder driving drill pipe tong to drive new stacks, judge the relative position and the movement velocity of new stacks joint and drilling rod top connection by being installed in the displacement transducer B on the top drive guide rail or being installed in rotary encoder and the detection of the displacement transducer A on the main frame upper junction plate on the winch drum and determining line displacement under the new stacks with this this moment; When stacks joint and drilling rod top connection near the time, in time adjust controlling parameter, guarantee stacks joint and the smooth make-up of drilling rod top connection and finish to detain and operate.
What drove on the top, employing is driven on laser range finder, drill pipe tong, drilling well power slip, first envelope flashboard, blind rams, back-up tong, second envelope flashboard and top is existing equipment.The full name that drive on the top is a top-drive drilling; First envelope flashboard and second envelope flashboard are respectively half envelope ram preventers; Blind rams is the blind rams preventer.
The tool joint position control method of continuous circulating drilling system, the equipment that is adopted is:
On base, be fixed with main frame, and main frame is relative with well head.Main frame mainly is made up of drill pipe tong, compensating chain device, cavity assembly, bracket assembly and drilling well power slip; Wherein compensating chain device is made of four balanced compensated oil cylinders, and balanced compensated oil cylinder is fixed on the upper junction plate of bracket assembly; Drill pipe tong is fixedlyed connected with the piston rod of balanced compensated oil cylinder; The cavity assembly is fixed on the bracket assembly, and the cavity assembly is linked together from top to bottom by first envelope flashboard, blind rams, back-up tong and second envelope flashboard; The drilling well power slip is fixed in the rotary bushing of base, and connects as one by carrier bar and bracket assembly; The bracket assembly seat is on base.Be fixed with derrick at base, in a side of derrick and on base, be fixed with winch, one end of wire rope is wrapped on the winch, wire rope is walked around the overhead traveling crane fixed pulley of crown and is hung with the top by the tourist bus movable pulley and drives, there is top drive guide rail the both sides that drive on the top, and top drive guide rail is vertically fixed on the top of main frame; The other end of wire rope is fixed on the dead line anchor as dead line, and dead line anchor is fixed on the base.The lower end of driving on the top is connected with the top and drives the bottom drilling rod.
On base and at the other support that is fixed with of main frame, on the fixing support of laser range finder, drive on the top and to be fixed with annulet I, annulet II and annulet III on the drilling rod of bottom; Laser range finder is determined to push up the height and position that drives the bottom drilling rod by the annulet that detection and Identification have the different length external diameter, makes back-up tong enough smooth clamping drilling rod top connections in time in the chamber.
On top drive guide rail, be fixed with displacement transducer B, simultaneously rotary encoder be installed on the winch drum, be used to detect and determine that the top drives, pushes up the position of driving bottom drilling rod and new stacks joint.
On the upper junction plate of bracket assembly, be fixed with displacement transducer A, be used to detect the movement position of main frame drill pipe tong, judge the relative position of banjo fixing butt jointing in the chamber with this.
Pressure sensor is fixedly mounted on the dead line anchor, is used to detect the hook load of Hoisting System, judges with this whether the power slip dental lamina clamps drilling rod or whether new stacks joint touches with baffle plate.
On the upper junction plate of bracket assembly, be fixed with baffle mechanism, swing by baffle plate hydraulic oil cylinder driving baffle plate, touch the position that baffle plate is determined new stacks joint by transferring new stacks, drill pipe tong and top are driven to cooperate and are finished new stacks and drive docking between the drilling rod of bottom with pushing up.
Beneficial effect of the present invention: the tool joint position control method of the continuous circulating drilling system of the present invention, can in the main frame cavity assembly of continuous circulating drilling system, realize the accurate location of tool joint, guaranteed back-up tong clamping tool joint smoothly in the chamber, and correctly judge the relative position of banjo fixing butt jointing, improved the security reliability of last shackle operation, rubber wearing and tearing that caused when this method has been avoided mechanical flashboard location simultaneously and flashboard damage, and removed long stroke hydraulic cylinder supporting leg, reduced potential faults.
Description of drawings
Fig. 1 is the tool joint position control device schematic diagram of continuous circulating drilling, is main frame installation site schematic diagram.
Fig. 2 is the main machine structure schematic diagram.
Fig. 3 is that drive and the lengthening joint schematic diagram on the top.
Fig. 4 is the dead line anchor schematic diagram.
Joint location schematic diagram when Fig. 5 is shackle.
Fig. 6 is the joint location schematic diagram when going up button.
Among the figure, the 1-main frame; The 2-winch; The 3-wire rope; The 4-derrick; 5-drives the bottom drilling rod in the top; 6-drives on the top; The 7-top drive guide rail; The 8-laser range finder; The 9-support; The 10-dead line; The 11-dead line anchor; The 12-drilling rod; The 13-drill pipe tong; 14-displacement transducer A; The 15-upper junction plate; The 16-baffle mechanism; The 17-compensating chain device; 18-cavity assembly; The 19-bracket assembly; 20-drilling well power slip; The 21-base; 22-Power Tong dental lamina; The 23-baffle plate; 24-baffle plate oil cylinder; The balanced compensated oil cylinder of 25-; First envelope flashboard of 26-; The 27-blind rams; The 28-back-up tong; Second envelope flashboard of 29-; 30-power slip dental lamina; 31-displacement transducer B; 32-mark I; 33-mark II; 34-mark III; The 35-pressure sensor; The 36-rotary encoder; The top connection of 37-drilling rod; The new stacks of 38-; The new stacks joint of 39-; The 40-epicoele.
The specific embodiment
Embodiment 1: the tool joint position control method with a continuous circulating drilling system is an example, and the present invention is described in further detail.
Consult Fig. 1 and Fig. 2.The equipment that adopts is: be fixed with main frame 1 on base 21, and main frame 1 is relative with well head.Main frame 1 is made up of drill pipe tong 13, compensating chain device 17, cavity assembly 18, bracket assembly 19 and drilling well power slip 20 etc.; Wherein compensating chain device 17 is made of four balanced compensated oil cylinders 25, and balanced compensated oil cylinder 25 is fixed on the upper junction plate 15 of bracket assembly 19; Drill pipe tong 13 is fixedlyed connected with the piston rod of balanced compensated oil cylinder 25; Cavity assembly 18 is fixed on the bracket assembly 19, is made up of first envelope flashboard 26, blind rams 27, back-up tong 28 and second envelope flashboard 29; Drilling well power slip 20 is placed in the rotary bushing of base 21, and connects as one by carrier bar and bracket assembly 19; 19 of bracket assemblys are on base 21.。Be fixed with derrick 4 at base 21, in a side of derrick 4 and on base 21, be fixed with winch 2, one end of wire rope 3 is wrapped on the winch 2, wire rope 3 is walked around the overhead traveling crane fixed pulley at derrick 4 tops and is hung with the top by the tourist bus movable pulley and drives 6,6 both sides are driven on the top top drive guide rail 7, and top drive guide rail 7 is vertically fixed on the top of main frame 1; The other end of wire rope 3 is fixed on the dead line anchor 11 as dead line 10, and dead line anchor 11 is fixed on the base 21.Drive 6 lower end is connected with the top and drives bottom drilling rod 5 on the top.
Consult Fig. 1.On base 21 and at the main frame 1 other support 9 that is fixed with, on the support 9 that laser range finder 8 is fixed, laser range finder 8 exceeds 0.3 meter in main frame.Drive on the top and to be fixed with annulet I 32, annulet II 33 and annulet III34 on the bottom drilling rod 5; The annulet I 32 that adopts, annulet II 33 with the structure of annulet III34 are: each annulet is provided with different outside dimensions, and annulet I 32 external diameters on top are bigger than the annulet II 33 at middle part; The annulet III34 external diameter of bottom is littler than the annulet II 33 at middle part.Be used to represent to push up the differing heights position of driving bottom drilling rod 5, laser range finder 8 is discerned different annulets by detecting the external diameter size, determines the actual height that bottom drilling rod 5 is driven on the top with this.
Consult Fig. 3.On top drive guide rail 7, be fixed with displacement transducer B31, rotary encoder 36 be installed on winch 2 cylinders simultaneously;
Consult Fig. 2.On the upper junction plate 15 of bracket assembly 19, be fixed with displacement transducer A14;
Consult Fig. 4.Pressure sensor 35 is fixedly mounted on the dead line anchor 11;
Consult Fig. 2.On the upper junction plate 15 of bracket assembly 19, be fixed with baffle mechanism 16.
The continuous tool joint position control method of circulating drilling system comprises the tool joint location when drilling well makes up a joint shackle and last button in the process.
Consult Fig. 2 and Fig. 5.In the normal drilling process, when laser range finder 8 detects the top and drives mark I 32 on the bottom drilling rod 5, stop to creep into and utilize winch 2 to promote the top and drive 6 and drilling rod 12; When laser range finder 8 detects the top and drives mark III34 on the bottom drilling rod 5, stop to promote; After starting drilling well power slip 20 clamping drilling rods 12, drive 6, utilize the pressure sensor 35 on the dead line anchor 11 to detect hook loads, guarantee power slip dental lamina 30 firm grip drilling rods 12 and the weight of bearing whole drilling rod 12 with 2 times cavings of winch; Meanwhile, push up the mark II 33 that drives on the bottom drilling rod 5, illustrate that then drilling rod top connection 37 present positions are incorrect if laser range finder 8 detects, back-up tong 28 can not clamp drilling rod top connection 37, must unclamp power slip dental lamina 30 this moment, and promote the top and drive 6 and drilling rod 12, positions again; If do not detect the signal of mark II 33, illustrate that then drilling rod top connection 37 location are correct; Simultaneously, utilize to be installed in the displacement transducer B31 on the top drive guide rail 7 or to be installed in rotary encoder 36 on winch 2 cylinders and detect the top and drive 6 position, above-mentioned location situation is confirmed; After accurately locating, close back-up tong 28 clamping drilling rod top connections 37 in the chamber, start Power Tong dental lamina 22 clamping tops simultaneously and drive bottom drilling rod 5; After closing first envelope flashboard 26 and second envelope flashboard 29, beginning shackle operation, utilize drill pipe tong 13 and compensating chain device 17 to dismantle drilling rod top connection 37 after, promotes the top by winch 2 and drive bottom drilling rod 5, and it is up to drive drill pipe tong 13; In lifting process, utilization is installed in the displacement transducer B31 on the top drive guide rail 7 or is installed in rotary encoder 36 on winch 2 cylinders and the displacement transducer A14 on the main frame upper junction plate 15 detects and determines the position that bottom drilling rod 5 is driven on the top, when determining that the top is driven bottom drilling rod 5 and is promoted to blind rams 27 tops, stop to promote; After finishing the switching of circulation of drilling fluid passage, close blind rams 27, finish the shackle operation.
Tool joint location during last the button:
Consult Fig. 2 and Fig. 6.At first promote the top and drive 6, new stacks 38 is carried to the top of main frame 1 with winch 2; After the baffle plate oil cylinder 24 of startup baffle mechanism 16 is closed baffle plate 23, drive 6 with 2 times cavings of winch, and detect hook load, judge with this whether new stacks joint 39 touches with baffle plate 23 by the pressure sensor on the dead line anchor 11 35, when definite and baffle plate 23 touch, stop to transfer; Utilize Power Tong dental lamina 22 to clamp new stacks 38, and drive 6 with the top and cooperates and finish new stacks 38 and top and drive going up between the bottom drilling rod 5 and detaining and operate; Unclamp Power Tong dental lamina 22 then and open baffle plate 23, drive 6 with 2 times cavings of winch, new stacks joint 39 is put into main frame 1 epicoele 40, transfer displacement with rotary encoder 36 detections and the definite new stacks joint 39 that are installed in the displacement transducer B31 on the top drive guide rail 7 or be installed on winch 2 cylinders when transferring, when new stacks joint 39 arrives desired location, stop to transfer; After with balanced compensated oil cylinder 25 drill pipe tong 13 being promoted to certain altitude, starting Power Tong dental lamina 22 and clamp new stacks 38, and close first envelope flashboard 26; Opening blind rams 27, and after finishing the switching of circulation of drilling fluid passage, utilizing balanced compensated oil cylinder 25 to drive drill pipe tongs 13, to drive new stacks 38 descending, judge the relative position and the movement velocity of new stacks joint 39 and drilling rod top connection 37 by being installed in the displacement transducer B31 on the top drive guide rail 7 or being installed in rotary encoder 36 and the detection of the displacement transducer A14 on the main frame upper junction plate 15 on winch 2 cylinders and determining 38 times line displacements of new stacks with this this moment; When two joints are close, in time adjust controlling parameter, guarantee the smooth make-up of joint and finish the button operation.
Claims (3)
1. the tool joint position control method of a continuous circulating drilling system comprises the tool joint location when drilling well makes up a joint shackle and last button in the process, it is characterized in that:
Tool joint during shackle location: when laser range finder (8) detects the top and drives mark I (32) on the bottom drilling rod (5), stop to creep into and utilize winch (2) to promote the top and drive (6) and drilling rod (12); When laser range finder (8) detects the top and drives mark III (34) on the bottom drilling rod (5), stop to promote; After starting drilling well power slip (20) clamping drilling rod (12), drive (6) with caving under the winch (2), utilize the pressure sensor (35) on the dead line anchor (11) to detect hook load, guarantee power slip dental lamina (30) firm grip drilling rod (12) and bear the weight of whole drilling rod (12); Meanwhile, if detecting, laser range finder (8) pushes up the mark II (33) that drives on the bottom drilling rod (5), illustrate that then tool joint (37) present position is incorrect, back-up tong (28) can not clamp tool joint (37), must unclamp power slip dental lamina (30) this moment, and promote the top and drive (6) and drilling rod (12), position again; If do not detect the signal of mark II (33), illustrate that then tool joint (37) location is correct; Simultaneously, utilize the rotary encoder (36) that is installed in the displacement transducer B (31) on the top drive guide rail (7) or is installed on winch (2) cylinder to detect the position that (6) are driven on the top, above-mentioned location situation is confirmed; After tool joint (37) is accurately located, close back-up tong in the chamber (28) and clamp tool joint (37), start Power Tong dental lamina (22) clamping top and drive bottom drilling rod (5); After closing first envelope flashboard (26) and second envelope flashboard (29), beginning shackle operation, after utilizing drill pipe tong (13) and compensating chain device (17) to dismantle tool joint (37), promote the top by winch (2) and drive bottom drilling rod (5), and it is up to drive drill pipe tong (13); In lifting process, utilization is installed in the displacement transducer B (31) on the top drive guide rail (7) or is installed in rotary encoder (36) on winch (2) cylinder and the displacement transducer A (14) on the main frame upper junction plate (15) detects and determines that the top drives the position of bottom drilling rod (5), when determining that the top is driven bottom drilling rod (5) and is promoted to blind rams (27) top, stop to promote; After finishing the switching of circulation of drilling fluid passage, close blind rams (27), finish the shackle operation;
Tool joint location during last button the: at first use winch (2) to promote the top and drive (6), new stacks (38) is carried to the top of main frame (1); After the baffle plate oil cylinder (24) of startup baffle mechanism (16) is closed baffle plate (23), drive (6) with caving under the winch (2), and by the detection of the pressure sensor (35) on the dead line anchor (11) hook load, judge with this whether new stacks joint (39) touches with baffle plate (23), when determining and baffle plate (23) when touching, stop to transfer; Utilize Power Tong dental lamina (22) to clamp new stacks (38), and drive (6) with the top and cooperate and finish new stacks (38) and top and drive and go up the button operation between the bottom drilling rod (5); Unclamp Power Tong dental lamina (22) then and open baffle plate (23), drive (6) with caving under the winch (2), new stacks joint (39) is put into the epicoele (40) of main frame (1), transfer displacement with rotary encoder (36) detection and the definite new stacks joint (39) that are installed in the displacement transducer B (31) on the top drive guide rail (7) or be installed on winch (2) cylinder when transferring, when new stacks joint (39) arrives desired location, stop to transfer; After with balanced compensated oil cylinder (25) drill pipe tong (13) being promoted to setting height, starting Power Tong dental lamina (22) and clamp new stacks (38), and close first envelope flashboard (26); Opening blind rams (27), and after finishing the switching of circulation of drilling fluid passage, it is descending to utilize balanced compensated oil cylinder (25) driving drill pipe tong (13) to drive new stacks (38), judge the relative position and the movement velocity of new stacks joint (39) and tool joint (37) by being installed in the displacement transducer B (31) on the top drive guide rail (7) or being installed in rotary encoder (36) and the detection of the displacement transducer A (14) on the main frame upper junction plate (15) on winch (2) cylinder and determining new stacks (38) line displacement down with this this moment; When stacks joint (39) and tool joint (37) are close, in time adjust controlling parameter, guarantee the smooth make-up of stacks joint (39) and tool joint (37) and finish the button operation.
2. the tool joint position control method of continuous circulating drilling system according to claim 1, it is characterized in that: the equipment that is adopted is: be fixed with main frame (1) on base (21), and main frame (1) is relative with well head, and main frame (1) is made up of drill pipe tong (13), compensating chain device (17), cavity assembly (18), bracket assembly (19) and drilling well power slip (20); Wherein compensating chain device (17) is made of four balanced compensated oil cylinders (25), and balanced compensated oil cylinder (25) is fixed on the upper junction plate (15) of bracket assembly (19); Drill pipe tong (13) is fixedlyed connected with the piston rod of balanced compensated oil cylinder (25); Cavity assembly (18) is fixed on the bracket assembly (19), and cavity assembly (18) is linked together from top to bottom by first envelope flashboard (26), blind rams (27), back-up tong (28) and second envelope flashboard (29); Drilling well power slip (20) is fixed in the rotary bushing of base (21), and connects as one by carrier bar and bracket assembly (19); Bracket assembly (19) seat is on base (21); Be fixed with derrick (4) at base (21), in a side of derrick (4) and on base (21), be fixed with winch (2), one end of wire rope (3) is wrapped on the winch (2), wire rope (3) is walked around the overhead traveling crane fixed pulley at derrick (4) top and is hung with the top by the tourist bus movable pulley and drives (6), there is top drive guide rail (7) both sides that (6) are driven on the top, and top drive guide rail (7) is vertically fixed on the top of main frame (1); The other end of wire rope (3) is fixed on the dead line anchor (11) as dead line (10), and dead line anchor (11) is fixed on the base (21), and the lower end of driving (6) on the top is connected with the top and drives bottom drilling rod (5);
Go up and at the other support (9) that is fixed with of main frame (1) at base (21), on the fixing support (9) of laser range finder (8), drive on the top and to be fixed with annulet I (32), annulet II (33) and annulet III (34) on the bottom drilling rod (5);
On top drive guide rail (7), be fixed with displacement transducer B (31), rotary encoder (36) be installed on winch (2) cylinder simultaneously;
On the upper junction plate (15) of bracket assembly (19), be fixed with displacement transducer A (14);
Pressure sensor (35) is fixedly mounted on the dead line anchor (11);
On the upper junction plate (15) of bracket assembly (19), be fixed with baffle mechanism (16).
3. the tool joint position control method of continuous circulating drilling system according to claim 2, it is characterized in that: the annulet I that adopts (32), annulet II (33) are different with the outer electrical path length of annulet III (34).
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| CN2010102720066A CN101942976B (en) | 2010-09-01 | 2010-09-01 | Drill rod joint positioning and controlling method of continuous cycle drilling system |
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| CN107448157A (en) * | 2016-05-31 | 2017-12-08 | 江苏如通石油机械股份有限公司 | A kind of monoblock type elevator |
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| CN110217733A (en) * | 2019-05-08 | 2019-09-10 | 河南理工大学 | A kind of coal bed gas, oil gas down-hole string lifting means |
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