EP3444426A2 - Local electric power generation for tong control system - Google Patents
Local electric power generation for tong control system Download PDFInfo
- Publication number
- EP3444426A2 EP3444426A2 EP18173422.9A EP18173422A EP3444426A2 EP 3444426 A2 EP3444426 A2 EP 3444426A2 EP 18173422 A EP18173422 A EP 18173422A EP 3444426 A2 EP3444426 A2 EP 3444426A2
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- European Patent Office
- Prior art keywords
- tong
- electric power
- control system
- power generation
- motor
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Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/16—Connecting or disconnecting pipe couplings or joints
- E21B19/161—Connecting or disconnecting pipe couplings or joints using a wrench or a spinner adapted to engage a circular section of pipe
- E21B19/164—Connecting or disconnecting pipe couplings or joints using a wrench or a spinner adapted to engage a circular section of pipe motor actuated
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/16—Connecting or disconnecting pipe couplings or joints
- E21B19/165—Control or monitoring arrangements therefor
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/042—Threaded
Abstract
Description
- Embodiments of the present invention generally relate to systems and methods for local control and/or electric power generation for a tong.
- Tongs are devices used on oil and gas rigs for gripping and/or rotating tubular members, such as casing, drill pipe, drill collars, and coiled tubing (herein referred to collectively as tubulars and/or tubular strings). Tongs may be used to make-up or break-out threaded joints between tubulars. Tongs typically resemble large wrenches, and may sometime be referred to as power tongs, torque wrenches, spinning wrenches, and/or iron roughnecks. Tongs typically use hydraulic power to provide sufficiently high torque to make-up or break-out threaded joints between tubulars. Equipment utilized with/on tongs may also need some electric power, for example actuators and/or sensors. Supplying the electric power to such equipment commonly requires the routing of the electric wires through several junction boxes, cables, and/or connectors. Such routing can be expensive and hazardous due to the circumstances in explosive atmosphere. Such routing can also require manual mating/demating of connectors, which presents additional risks, costs, and reliability concerns. In some instances, adequate connectors may not be available or certified for the particular operational conditions.
- Historically, tongs have been either manually operated or controlled remotely by an operator in the driller's cabin. Onboard tong control has heretofore not been achievable due to control system size, power, and safety requirements.
- Onboard control of a tong - facilitated by local electric power generation - may provide improved handling, greater reliability, and increased safety and efficiency.
- Embodiments of the present invention generally relate to systems and methods for local control and/or electric power generation for a tong, wherein the tong control system is powered by the local electric power generation system.
- In accordance with one aspect of the present invention there is provided a tong. The tong includes a tong control system and a local electric power generation system.
- In accordance with another aspect of the present invention there is provided a method which includes supplying hydraulic power to a motor on a tong; driving an electric generator on the tong with the motor; and supplying electric power to a tong control system on the tong.
- In accordance with another aspect of the present invention, a method includes installing a tong control system on a tong; and installing a local electric power generation system on the tong, wherein the tong control system is powered by the local electric power generation system.
- So that the manner in which the above recited features of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to embodiments, some of which are illustrated in the appended drawings. It is to be noted, however, that the appended drawings illustrate only typical embodiments of this invention and are therefore not to be considered limiting of its scope, for the invention may admit to other equally effective embodiments.
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Figure 1 is an illustration of an exemplary tong according to embodiments described herein. -
Figure 2 is an illustration of an exemplary local electric power generation system for the tong ofFigure 1 . -
Figure 3A is an illustration of an exemplary electric generator for the local electric power generation system ofFigure 2 .Figure 3B is an illustration of an exemplary electric generator and battery system for the local electric power generation system ofFigure 2 . -
Figure 4 is an illustration of a component diagram of an exemplary tong in the context of an oil and gas rig. - Embodiments of the present invention generally relate to systems and methods for local control and/or electric power generation for a tong.
- In some embodiments, a tong control system may be small (e.g., less than about 2 ft (61 cm) in any dimension; for example 16" x 16" x 6" (41 cm x 41 cm x 15 cm)), so that it can be placed on the tong. In some embodiments, data communication between the local tong control system and remote logging/monitoring equipment may be wireless. In some embodiments, electric power generation may occur locally on the tong by branching off a portion of an existing hydraulic supply line. Consequently, existing tongs may be beneficially retrofitted. Some embodiments may provide beneficial reduction in electrical connectors, supply boxes, and/or cables that could be damaged, cause accident or injury, contamination, and/or corrosion issues. There may be beneficially only a few required components (e.g., a hydraulic motor, a volume control valve, an alternator, and a belt or drive shaft to connect both). In some embodiments, a battery system may power the tong control system during the absence of hydraulic power in the event of an emergency shut-down.
- A tong control system may monitor and actuate several parts of the tong. For example, the tong control system may monitor and actuate components of the tong to provide varying torque and/or angular displacement. Disconnection of a tubular joint may require both a high-torque/low-angular displacement "break" action to disengage the contact shoulders, and a low-torque/high-angular displacement "spin" action to screw-out the threads. Connection of a tubular joint may occur in the reverse sequence. In the make/break action, torque may be high (e.g., 10,000-100,000 ft-lb (13,558-135,582 Nm)), having a small (e.g., 0.12-0.24 revolutions) angular displacement. In the spin action, torque may be low (e.g., 1,000-3,000 ft-lb (1,356-4,067 Nm), having a large (e.g., 3-5 revolutions) angular displacement.
- As another example, the tong control system may monitor and actuate components of the tong to provide varying clamping and rotation actions. Upper and lower jaws of the tong may turn relative to each other to break a connection between upper and lower tool joints. The upper jaw may then be released while the lower jaw remains clamped onto the lower tool joint. A spinning wrench, commonly separate from the torque wrench and mounted higher up on the carriage, may engage the stem of the upper joint of drill pipe to spin the upper joint until it is disconnected from the lower joint. Upper and lower jaws of the tong may turn relative to each other to make-up two joints of pipe. The lower jaw may grip the lower tool joint while the upper pipe is brought into position. The spinning wrench may engage the upper joint to spin it into the lower joint. The torque wrench may clamp the pipe and tighten the connection.
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Figure 1 illustrates anexemplary tong 100. Thetong 100 may include aframe 110 and a plurality ofjaws 115, for example upper jaws 115-U and lower jaws 115-L. The jaws may be configured to grip and/or rotate tubulars. The jaws (or portions thereof) may move (e.g., rotate) relative to theframe 110. Consequently, thejaws 115 may be referred to as a rotating portion of thetong 100, and theframe 110 may be referred to as a stationary portion of thetong 100. In some embodiments, thetong 100 may include asystem 120 for local electric power generation. In some embodiments, thetong 100 may include asystem 160 for tong control (e.g., controllers, input/output devices). Thetong 100 may also include electrical equipment 165 (e.g., actuators, sensors) and/or ahydraulic coupler 170. Each of the local electricpower generation system 120,tong control system 160, andhydraulic coupler 170 may be disposed on a stationary portion of thetong 100, for example theframe 110. Theelectrical equipment 165 may be disposed on either or both of the rotating portion and stationary portion of thetong 100. - In some embodiments,
tong control system 160 may be configured to control how thetong 100 handles tubulars, grips tubulars, turns tubulars, and/or manages hydraulic power for handling, gripping, and/or turning tubulars. In some embodiments,tong control system 160 may be configured to receive input (e.g., from sensors) regarding how thetong 100 interacts with tubulars. In some embodiments,tong control system 160 may be configured to process and/or store data (e.g., pipe size, thread size, thread count, etc.) regarding how thetong 100 interacts with tubulars. In some embodiments,tong control system 160 may be configured to generate and/or send control signals (e.g., to actuators) to control how thetong 100 interacts with tubulars.Tong control system 160 may include a torque sensor (e.g., a load cell) and/or a turns counter. In some embodiments,tong control system 160 may also include a clock (e.g., a timer).Tong control system 160 may be configured to receive input from a torque sensor and/or a turns counter. In some embodiments,tong control system 160 may be configured to also receive input from a clock.Tong control system 160 may include data storage and/or data processors.Tong control system 160 may be configured to store and/or process tong control data.Tong control system 160 may include a tubular gripping actuator, a tubular turning actuator, and/or a hydraulic power control actuator (e.g., a dump valve). In some embodiments,tong control system 160 may also include a jaw positioning actuator.Tong control system 160 may be configured to send control signals to a tubular gripping actuator, a tubular turning actuator, and/or a hydraulic power control actuator. In some embodiments,tong control system 160 may be configured to also send control signals to a jaw positioning actuator. -
Figure 2 illustrates an exemplary local electricpower generation system 120. Thesystem 120 may include a motor 130 (e.g., a hydraulic motor) and an electric generator 140 (e.g., an alternator or a dynamo). In some embodiments, thesystem 120 includes abattery system 150. Theelectric generator 140 may be driven bymotor 130. In some embodiments, theelectric generator 140 is directly driven bymotor 130, for example bydrive shaft 135. In some embodiments, themotor 130 drives a belt drive or gearing (not shown) to driveelectric generator 140. In some embodiments, themotor 130 is dedicated to drive onlyelectric generator 140. The local electricpower generation system 120 may supply electric power to thetong control system 160 and/or theelectrical equipment 165. - In some embodiments, and at times during operations, the
hydraulic coupler 170 may supply hydraulic power to themotor 130. In some embodiments, and at times during operations, theelectric generator 140 may supply electric power to thebattery system 150, thetong control system 160, and/or theelectrical equipment 165. - At times during operations, hydraulic power from the
hydraulic coupler 170 may be reduced or stopped. Consequently, it is expected thatmotor 130 may not run continuously and/or consistently. Likewise, it is expected thatelectric generator 140 may not run continuously and/or at a consistent output rate. In some embodiments, whenelectric generator 140 is not running, or is running at a low output rate, thebattery system 150 may supply electric power to thetong control system 160 and/or theelectrical equipment 165. In some embodiments, and at times during operations, theelectric generator 140 and thebattery system 150 may jointly supply electric power to thetong control system 160 and/or theelectrical equipment 165. -
Figure 3A illustrates an exemplaryelectric generator 140 for use in a local electricpower generation system 120.Electric generator 140 may include adynamo 141 and regulatingcircuits 143. Theelectric generator 140 may include, and/or portions thereof may be encased in, aflameproof housing 151.Dynamo 141 may be connected to regulatingcircuits 143 so thatoutput 147 may be suitable for direct connection to electronic circuits ontong 100. For example, regulatingcircuits 143 may include arectifier 144, one ormore smoothing capacitors 145, and/or avoltage regulator 142.Dynamo 141 may be any generator with a suitable load capacity. In some embodiments,dynamo 141 may produce an unstable voltage (e.g., due to non-constant speed). In some embodiments,dynamo 141 may be a self-energizing generator that provides a 28-29V rectified and regulated current with pulsating voltage. Regulatingcircuits 143 may smooth and regulate the voltage to 24V for use in subsequent circuits ontong 100. In some embodiments,electric generator 140 may provide 28V DC current, andvoltage regulator 142 may convert that to 24V DC current.Electric generator 140 may produce anoutput 147. At times during operations, theelectric generator 140 may supplyoutput 147 to thetong control system 160 and/or theelectrical equipment 165. -
Figure 3B illustrates anexemplary battery system 150 with input from an exemplaryelectric generator 140. In some embodiments,electric generator 140 includes only adynamo 141, but no regulatingcircuits 143 beforeoutput 147.Battery system 150 may include and/or be encased in aflameproof housing 151.Battery system 150 may include avoltage regulator 152. For example, in some embodiments,electric generator 140 may provide 28V DC current tobattery system 150, andvoltage regulator 152 may convert that to 24V DC current. In some embodiments,voltage regulator 142 may provide a charging voltage (e.g., for lead acid battery charging, either 14.4V or 28.8V). In some embodiments,voltage regulator 142 may provide a switching power supply with a wide input range.Battery system 150 may include abattery pack 153, acharge controller 154, an indicator 155 (e.g., a lamp), and/or a start/stop switch 156. Thebattery pack 153 may include one or more types of batteries, such as a lead-acid, or lithium iron phosphate, or lithium titanium oxide. The batteries may be selected to meet the requirements of explosion protection and environmental conditions. For example, thebattery pack 153 may include a battery of about 1 kg size, which may be capable of powering thetong 100 for up to about 1 hour. In some embodiments,battery system 150 may include one or more backup battery packs (not shown) to supplementbattery pack 153. Thecharge controller 154 may regulate the charging current tobattery pack 153. For example, thecharge controller 154 may provide voltage supervision, voltage balancing, and/or temperature supervision forbattery pack 153. Thecharge controller 154 may also include logic and/or circuitry to control the status display of theindicator 155.Battery system 150 may produce anoutput 157. At times during operations, thebattery system 150 may supplyoutput 157 to thetong control system 160 and/or theelectrical equipment 165. In some embodiments, theoutput 157 ofbattery system 150 may be determined by the status one or more of the components thereof. For example, theoutput 157 may be activated when thevoltage regulator 152 receives a current fromgenerator 140. As another example, theoutput 157 may be activated when thegenerator 140 does not produce current, but thebattery pack 153 is not fully discharged. At times, when thegenerator 140 is not producing current, thebattery system 150 may maintainoutput 157 for a pre-determined time (e.g., up to about 10 minutes, up to about 1 hour, etc.). This may be beneficial in cases when power tomotor 130 is unexpectedly lost. In such instances,battery system 150 may maintainoutput 157 so thattong control system 160 and/orelectrical equipment 165 may continue to function. In some embodiments,tong control system 160 may record operational status whilebattery system 150 maintainsoutput 157. This may beneficially provide for quick restart after hydraulic power failure. As another example, theoutput 157 may be activated when the start/stop switch 156 is switched on. As another example, theoutput 157 may be deactivated when the start/stop switch 156 is switched off. As another example, theoutput 157 may be deactivated when thebattery pack 153 is fully discharged. As another example, theoutput 157 may be deactivated when thecharge controller 154 determines that the temperature of thebattery pack 153 exceeds the operational temperature range (e.g., above about 70 °C). As another example, theoutput 157 may be deactivated when thecharge controller 154 determines that one or more cells ofbattery pack 153 is below a predefined voltage. As another example, theoutput 157 may be deactivated when thecharge controller 154 determines certain output deactivation conditions exist (e.g., lack of current draw for a specified time period (e.g., two minutes), lack of current change for a specified time period (e.g., five minutes)). In some embodiments, theindicator 155 may provide an external indication of the status of one or more of the components of thebattery system 150. For example, the indicator may provide a first indication (e.g., solid light) when thevoltage regulator 152 receives a current fromgenerator 140 and thebattery pack 153 is charging. As another example, the indicator may provide a second indication (e.g., slowly blinking light) whenbattery pack 153 is supplying output 157 (e.g., no current from generator 140). As another example, the indicator may provide a third indication (e.g., fast blinking light) when theoutput 157 will be deactivated soon (e.g., low charge inbattery pack 153 and no current from generator 140). -
Figure 4 illustrates a component diagram of anexemplary tong 100 in the context of an oil andgas rig 200. Theinterface 210 between thetong 100 and therig 200 is indicated by a dashed line. Therig 200 is divided into asection 220 for components (other than tong 100) that may be located on the rig floor, and asection 230 for components that may be located remotely (e.g., in a driller's cabin) from therig floor section 220. As inFigure 1 , the local electricpower generation system 120 is disposed ontong 100. Heretofore, various types of controllers and electrical equipment would typically be located on therig floor section 220 and connected totong 100 through a series of junction boxes, cables, and/or connectors. In one embodiment, the local electricpower generation system 120 is movable with thetong 100. As illustrated inFigure 4 , such controllers and electrical equipment, with accompanying junction boxes, cables, and/or connectors, have been removed from therig floor section 220. For example,tong control system 160 that is disposed ontong 100 may include programmable logic controllers, input/output systems, and control systems (e.g., joint-analyzed makeup ("JAM") system) that had heretofore been located on therig floor section 220. Local electricpower generation system 120 may thereby provide power totong control system 160. As another example,electrical equipment 165 that is disposed ontong 100 previously would have been connected to electrical power from therig floor section 220 through a series of junction boxes, cables, and/or connectors. As illustrated inFigure 4 ,electrical equipment 165 is powered from the local electricpower generation system 120. As another example, load cells, turns sensors, and/or dump valve actuators that are disposed ontong 100 previously would have been connected to electrical power from therig floor section 220 through a series of junction boxes, cables, and/or connectors. As illustrated inFigure 4 , such load cells, turns sensors, and/or dump valve actuators are powered from the local electricpower generation system 120. In some embodiments, such load cells, turns sensors, and/or dump valve actuators are directly connected to programmable logic controllers, input/output systems, and control systems ontong 100, thereby reducing or removing the risk of failure of intervening junction boxes, cables, and/or connectors which were required whenelectrical equipment 165 was located onrig floor section 220. -
Figure 4 also illustrateshydraulic lines 180 poweringmotor 130 of local electricpower generation system 120.Jaws 115 may be powered with hydraulic power to provide sufficiently high torque to make-up and/or break-out tubulars. In some embodiments, the same hydraulic power system may be used topower motor 130. For example, avolume control valve 185 may regulate the volume of hydraulic power supplied to local electricpower generation system 120 as opposed tojaws 115. Whenelectrical equipment 165 was previously located onrig floor section 220, the couplings atinterface 210 would include both electrical couplings and hydraulic couplings. The electrical couplings atinterface 210 may have required manual intervention. In some instances, adequate connectors for electrical coupling may not be available or certified for the particular operational conditions. As illustrated inFigure 4 ,tong 100 no longer utilizes electrical couplings atinterface 210.Hydraulic coupler 170 may provide the complete coupling assembly. Consequently, automated connectors that are certified for rig floor environments may be utilized. Moreover,battery system 150 may powertong control system 160 prior to connection tohydraulic lines 180. Startup routines withintong control system 160 may thereby be run first, and thentong control system 160 may facilitate automated coupling ofhydraulic coupler 170. -
Figure 4 also illustrates wireless communication equipment 190 (e.g., Wi-Fi antennas and routers) ontong 100 and in remotely locatedsection 230 ofrig 200. Thetong 100 may communicate with systems and/or operators that are in remotely locatedsection 230 withwireless communication equipment 190. Whenelectrical equipment 165 was located onrig floor section 220, communications betweentong 100 and remote systems and/or operators required a series of junction boxes, cables, and/or connectors on therig floor section 220. By communicating throughwireless communication equipment 190, the risk of failure of intervening junction boxes, cables, and/or connectors is reduced or removed. - As a normal part of operations,
tong 100 may be disconnected fromrig 200, for example to be stored between jobs.Battery system 150 may remained charged, even whilehydraulic lines 180 are disconnected frommotor 130. At times, information that has been logged by and/or stored intong control system 160 may be accessed and/or downloaded whiletong 100 is disconnected fromrig 200.Battery system 150 may provide electrical power totong control system 160 and/orwireless communication equipment 190 to facilitate accessing and/or downloading data whiletong 100 is disconnected fromrig 200. Likewise, data, software, firmware updates, etc., may be uploaded to controlsystem 160 whiletong 100 is disconnected fromrig 200.Battery system 150 may provide electrical power totong control system 160 and/orwireless communication equipment 190 to facilitate uploading data and/or software whiletong 100 is disconnected fromrig 200. - Conventional tongs may be retrofitted with one or more embodiments of local tong control systems and/or local electric power generation.
- In an embodiment a tong includes a tong control system; and a local electric power generation system, wherein the tong control system is powered by the local electric power generation system.
- In one or more embodiments disclosed herein, the tong control system includes: a torque sensor; a turns counter; a tubular gripping actuator; and a tubular turning actuator.
- In one or more embodiments disclosed herein, the tong control system further includes a clock.
- In one or more embodiments disclosed herein, the tong control system further includes a jaw positioning actuator.
- In one or more embodiments disclosed herein, the tong control system further includes data storage and a data processor.
- In one or more embodiments disclosed herein, the tong control system further includes a hydraulic power control actuator.
- In one or more embodiments disclosed herein, the tong control system is configured to: receive input from: a torque sensor and a turns counter; and send control signals to: a tubular gripping actuator, and a tubular turning actuator.
- In one or more embodiments disclosed herein, the tong control system is further configured to receive input from a clock.
- In one or more embodiments disclosed herein, the tong control system is further configured to send control signals to a jaw positioning actuator.
- In one or more embodiments disclosed herein, the tong control system is further configured to store tong control data and process tong control data.
- In one or more embodiments disclosed herein, the tong control system is further configured to send control signals to a hydraulic power control actuator.
- In one or more embodiments disclosed herein, the local electric power generation system includes a motor; and an electric generator.
- In one or more embodiments disclosed herein, the motor directly drives the electric generator.
- In one or more embodiments disclosed herein, the motor is dedicated to drive only the electric generator.
- In one or more embodiments disclosed herein, the local electric power generation system further comprises a battery system.
- In one or more embodiments disclosed herein, the battery system comprises a charge controller.
- In one or more embodiments disclosed herein, the motor is a hydraulic motor.
- In one or more embodiments disclosed herein, the tong also includes a frame, wherein the local electric power generation system is disposed on the frame.
- In one or more embodiments disclosed herein, the tong also includes electrical equipment, wherein the local electric power generation system powers the electrical equipment.
- In one or more embodiments disclosed herein, the electrical equipment is located on a stationary portion of the tong.
- In one or more embodiments disclosed herein, the tong also includes a hydraulic coupler; and a plurality of jaws, wherein power for the plurality of jaws comes through the hydraulic coupler.
- In one or more embodiments disclosed herein, the local electric power generation system comprises a hydraulic motor; and power for the hydraulic motor comes through the hydraulic coupler.
- In one or more embodiments disclosed herein, the tong also includes a volume control valve between the hydraulic coupler and the hydraulic motor.
- In one or more embodiments disclosed herein, the tong control system comprises wireless communication equipment.
- In an embodiment, a method includes supplying hydraulic power to a motor on a tong; driving an electric generator on the tong with the motor; and supplying electric power to a tong control system on the tong.
- In one or more embodiments disclosed herein, the method also includes supplying electric power to a battery system on the tong.
- In one or more embodiments disclosed herein, the electric power is supplied to the tong control system by at least one of the electric generator and the battery system.
- In one or more embodiments disclosed herein, the method also includes stopping the driving the electric generator with the motor; and while the driving is stopped, continuing to supply electric power to the tong control system.
- In one or more embodiments disclosed herein, the electric power is supplied to the tong control system by the battery system while the driving is stopped.
- In one or more embodiments disclosed herein, the method also includes recording operational status information while the driving is stopped.
- In one or more embodiments disclosed herein, the method also includes supplying electric power to a battery system on the tong; then disconnecting the hydraulic power supply from the motor and the electric power from the tong control system, leaving the battery system charged; then supplying electric power to the tong control system with the battery system.
- In one or more embodiments disclosed herein, the method also includes, while the hydraulic power supply is disconnected from the motor, at least one of: running a startup routine for the tong control system; accessing data from the tong control system; downloading data from the tong control system; uploading data to the tong control system; and uploading software to the tong control system.
- In an embodiment, a method includes installing a tong control system on a tong; and installing a local electric power generation system on the tong, wherein the tong control system is powered by the local electric power generation system.
- In one or more embodiments disclosed herein, the tong is located on a rig floor, the method further comprising disconnecting from the tong and removing from the rig floor at least one of programmable logic controllers, input/output systems, joint-analyzed makeup systems, junction boxes, cables, connectors, and electrical couplings.
- While the foregoing is directed to embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.
Claims (15)
- A tong comprising:a tong control system; anda local electric power generation system, wherein the tong control system is powered by the local electric power generation system.
- The tong of claim 1, wherein the tong control system comprises:a torque sensor;a turns counter;a tubular gripping actuator; anda tubular turning actuator.
- The tong of claim 1 or 2, wherein the tong control system further comprises one or more of:a clock;a jaw positioning actuator;data storage and a data processor;a hydraulic power control actuator.
- The tong of any preceding claim, wherein the local electric power generation system comprises:a motor; andan electric generator.
- The tong of claim 4, wherein the motor directly drives the electric generator, and is dedicated to drive only the electric generator.
- The tong of any preceding claim, wherein the local electric power generation system further comprises a battery system.
- The tong of any preceding claim, further comprising a frame, wherein the local electric power generation system is disposed on the frame.
- The tong of any preceding claim, further comprising electrical equipment, wherein the local electric power generation system powers the electrical equipment, and the electrical equipment is located on a stationary portion of the tong.
- The tong of any preceding claim, further comprising:a hydraulic coupler; anda plurality of jaws, wherein:power for the plurality of jaws comes through the hydraulic coupler;the local electric power generation system comprises a hydraulic motor; andpower for the hydraulic motor comes through the hydraulic coupler;the tong optionally further comprising a volume control valve between the hydraulic coupler and the hydraulic motor;and/or wherein the tong control system comprises wireless communication equipment.
- A method comprising:supplying hydraulic power to a motor on a tong;driving an electric generator on the tong with the motor; andsupplying electric power to a tong control system on the tong.
- The method of claim 10, further comprising supplying electric power to a battery system on the tong, wherein optionally the electric power is supplied to the tong control system by at least one of the electric generator and the battery system.
- The method of claim 11, further comprising:stopping the driving the electric generator with the motor; andwhile the driving is stopped, continuing to supply electric power to the tong control system;wherein optionally the electric power is supplied to the tong control system by the battery system while the driving is stopped;and/or wherein the method further comprises recording operational status information while the driving is stopped.
- The method of any one of claims 11 to 12, further comprising:after supplying electric power to a battery system on the tong, disconnecting the hydraulic power supply from the motor and the electric power from the tong control system, leaving the battery system charged;then supplying electric power to the tong control system with the battery system.
- A method comprising:installing a tong control system on a tong; andinstalling a local electric power generation system on the tong, wherein the tong control system is powered by the local electric power generation system.
- The method of claim 14, wherein the tong is located on a rig floor, the method further comprising disconnecting from the tong and removing from the rig floor at least one of programmable logic controllers, input/output systems, joint-analyzed makeup systems, junction boxes, cables, connectors, and electrical couplings.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/607,049 US20180340380A1 (en) | 2017-05-26 | 2017-05-26 | Local electric power generation for tong control system |
Publications (3)
Publication Number | Publication Date |
---|---|
EP3444426A2 true EP3444426A2 (en) | 2019-02-20 |
EP3444426A3 EP3444426A3 (en) | 2019-03-13 |
EP3444426B1 EP3444426B1 (en) | 2021-10-27 |
Family
ID=62222432
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18173422.9A Active EP3444426B1 (en) | 2017-05-26 | 2018-05-21 | Local electric power generation for tong control system |
Country Status (3)
Country | Link |
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US (1) | US20180340380A1 (en) |
EP (1) | EP3444426B1 (en) |
CA (1) | CA3004037A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111101878A (en) * | 2020-01-02 | 2020-05-05 | 如东前进石油机械制造有限公司 | Monitoring system for drilling rod hydraulic power tong is gone up, is broken out and health control |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11078733B2 (en) * | 2018-08-22 | 2021-08-03 | Weatherford Technology Holdings, Llc | Apparatus and methods for determining operational mode of tong assembly |
US11454069B2 (en) | 2020-04-21 | 2022-09-27 | Schlumberger Technology Corporation | System and method for handling a tubular member |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7188686B2 (en) * | 2004-06-07 | 2007-03-13 | Varco I/P, Inc. | Top drive systems |
US8109179B2 (en) * | 2008-02-12 | 2012-02-07 | Allan Stewart Richardson | Power tong |
US20120323500A1 (en) * | 2011-06-20 | 2012-12-20 | Alberta Custom Technologies Ltd. | Apparatuses for monitoring power tong operation |
US9085343B2 (en) * | 2013-03-14 | 2015-07-21 | Hydrofoiled, Inc. | Universal hydrofoil connector system and method of attachment |
US20150054279A1 (en) * | 2013-08-22 | 2015-02-26 | Sauer-Danfoss Inc. | System for a hydraulically powered electric generator |
US9453377B2 (en) * | 2013-10-21 | 2016-09-27 | Frank's International, Llc | Electric tong system and methods of use |
WO2017044482A1 (en) * | 2015-09-08 | 2017-03-16 | Weatherford Technology Holdings, Llc | Genset for top drive unit |
-
2017
- 2017-05-26 US US15/607,049 patent/US20180340380A1/en not_active Abandoned
-
2018
- 2018-05-04 CA CA3004037A patent/CA3004037A1/en not_active Abandoned
- 2018-05-21 EP EP18173422.9A patent/EP3444426B1/en active Active
Non-Patent Citations (1)
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None |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111101878A (en) * | 2020-01-02 | 2020-05-05 | 如东前进石油机械制造有限公司 | Monitoring system for drilling rod hydraulic power tong is gone up, is broken out and health control |
Also Published As
Publication number | Publication date |
---|---|
EP3444426B1 (en) | 2021-10-27 |
EP3444426A3 (en) | 2019-03-13 |
US20180340380A1 (en) | 2018-11-29 |
CA3004037A1 (en) | 2018-11-26 |
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