• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    VOLTAGE MEASUREMENT ASSEMBLY FOR MEASURING AND MONITORING A TENSION FORCE IN A CABLE BEING DEPLOYED FROM A WINDING DEVICE IN WHICH THE CABLE IS COILED AND METHOD FOR MEASURING AND MONITORING A TENSION FORCE IN A WINDABLE DEVICE The present invention discloses a tension measuring assembly (10), for measuring and monitoring a tension force in a cable (14) being deployed in a winding device on which the cable (14) is wound, the assembly comprises at least one force sensor disposed adjacent to the winding device to detect a force applied to the winding device and generate a force signal representing the sensed force and a processor (22) responsive to the force signal to calculate and monitor a tension force present in the cable (14). A cable sensor (20) engages the deployed cable (14) to detect a winding/unwinding rate and a length of cable moving across the cable sensor (20) in a predetermined period of time and generating a winding signal representing the detected rate and length for the processor (22) for use in calculating and monitoring the tension force.
    公开号:BR112012025783B1
    申请号:R112012025783-8
    申请日:2011-04-08
    公开日:2021-07-06
    发明作者:Lucas Teurlay；Stephane Bread；Dominique Aubry
    申请人:Prad Research And Development Limited；
    IPC主号:
    专利说明:

    FUNDAMENTALS OF THE INVENTION
    [001] Statements in this section only provide basic information relating to the present disclosure and may not constitute prior art.
    [002] The present invention generally relates to well rental surface equipment, such as wire rope surface equipment and the like. In particular, the invention is directed to an assembly, a system and a method for measuring a voltage in a cable.
    [003] During a typical wire rope operation a tool string is moved up and down a well using a winch. Specifically, the tool string is attached to a handle, whereby the handle is wound/uncoiled on a drum. In this context, it is crucial to monitor a cable tension to prevent operational traps such as cable breaks (eg tool string stuck in the well), cable slack (eg not enough cable tension), and the like.
    [004] Currently, cable tension is measured using a Cable Mounted Tension Device (CMTD), in which the cable is clamped between three wheels and an axle is deformed proportionally to the cable tension. To monitor a strain on the cable, the shaft strain is detected by a strain gauge.
    [005] In certain examples, a conventional strain gauge had some reliability issues and the CMTD wheels could damage the winch cable (under high tension the CMTD could even break the cable).
    [006] More accurate assemblies, systems and methods are needed to measure the voltage of a cable, without the use of a CMTD. It also remains desirable to provide improvements to well-lease surface equipment in efficiency, flexibility, reliability and serviceability. SUMMARY OF THE INVENTION
    [007] One embodiment of a tension measurement assembly, for measuring and monitoring a tension force in a cable being deployed from a winding device in which the cable is wound, includes at least one force sensor disposed adjacent to the winding device to detect a force applied to the winding device and generate a force signal representing the detected force and a force signal responsive processor to calculate and monitor a tension force present in the cable.
    [008] In one embodiment, a system for measuring and monitoring a tension force in a cable includes: a winding device for deploying and retrieving the cable wound therein, wherein said winding device includes a support element, a force sensor disposed adjacent to the support element of said winding device to detect a force on the support and generate a force signal representing the detected force; a cable sensor arranged to measure cable winding/unwinding characteristics and generating a winding signal representing the measured winding/unwinding characteristics; and a processor for computing and monitoring the tension force on the cable in response to the force signal and the winding signal.
    [009] The invention also includes methods for measuring a voltage of a cable.
    [010] In one embodiment, a method includes the steps of: providing a winding device to deploy and retrieve the cable; direct the cable from the winding device to a downstream point; providing a force sensor disposed adjacent to the winding device to detect a force applied to the winding device and generating a force signal representing the sensed force; providing a cable sensor arranged to measure cable winding/unwinding characteristics and generating a winding signal representing the measured winding/unwinding characteristics; and calculate the cable tension force based on the force sensor force signal and the cable sensor winding signal. BRIEF DESCRIPTION OF THE DRAWINGS
    [011] These and other features and advantages of the present invention will be better understood by reference to the following detailed description when considered in conjunction with the accompanying drawings, in which: FIG. 1 is a schematic representation of a voltage measurement system and assembly in accordance with an embodiment of the present invention. FIG. 2 is a schematic block diagram of the voltage measurement system and assembly of FIG. 1. DETAILED DESCRIPTION OF THE INVENTION
    [012] Referring now to FIGS. 1 to 2, an embodiment of a tension measuring system is shown, generally indicated by 10. As shown, the tension measuring system 10 includes a winding device 12 for winding a cable 14, a plurality of force sensors 16 , 18 positioned to measure forces acting on the winding device 12, a cable sensor 20 and a processor 22 in communication with the force sensors 16, 18 and the cable sensor 20. Those skilled in the art will appreciate that the cable 14 can comprise an electrical or electro-optical steel cable, a smooth cable, a length of coiled tubing or a similar suitable winding device which is operable to be wound on the winding device 12.
    [013] As shown in Fig. 1, the winding device 12 includes a drum 24 having an axle 26 (i.e., support member) disposed therethrough, wherein a portion of the axle 26 extends from opposite sides of the drum 24. A pair of bearings 28 is disposed on a chassis 30 (eg cradle) and positioned to receive the portion of the shaft 26 extending from opposite sides of the drum 24. It is understood that the bearings 28 are mounted on the chassis 30 to provide support for the drum 24 , while allowing the drum 24 to rotate to wind and unwind the cable 14. It is further understood that other support elements may be used to engage the chassis 30 to support the drum 24, while allowing the drum 24 to rotate.
    [014] Force sensors 16, 18 are multi-axis force sensors. As a non-limiting example, each of the force sensors 16, 18 includes a plurality of independent strain gauges for measuring force vectors along three predefined axes (i.e., predefined coordinate system) as well as measure the moments around each force vector. As a further non-limiting example, each of the force sensors 16, 18 includes a transducer to measure and send forces along all three Cartesian coordinates (x, y and z). It is understood that the coordinate system of the force sensors 16, 18 can be configured in any orientation with respect to the winding device 12. It is further understood that any sensors can be used to measure forces acting on the winding device 12 and sending a force signal representing the measured forces, such as a multi-axis force/torque transducer and a multi-axis load cell known in the art.
    [015] In the embodiment shown, the force sensors 16, 18 are disposed adjacent to the shaft 26, wherein each of the force sensors 16, 18 is adjacent to an associated bearing of the bearings 28 in order to monitor the forces between the shaft. 26 and bearings 28 along at least one axis. In certain embodiments, at least one of force sensors 16, 18 is integrated with shaft 26. In certain embodiments, at least one of force sensors 16, 18 is integrated with at least one of bearings 28. In the context of force sensors 16, 18, the phrase "adjacent array" can be defined as: near; touching; integrated with; or a functional equivalent thereof. It is further understood that any number of force sensors 16, 18 can be used to measure forces applied to the winding device 12.
    [016] The cable sensor 20 is positioned to measure cable winding/unwinding characteristics of the cable 14 or the winding device, such as cable 14 winding/unwinding rate and a length of the cable 14 passing the cable sensor 20 over a period of time. of predetermined time, for example. It is understood that the cable sensor 20 may be adapted to measure any number of characteristics of the cable 14.
    [017] By way of non-limiting example, the cable sensor 20 is a depth wheel adapted to engage the cable 14 to measure at least a length of the cable 14 that passes therethrough and a rate of winding/unwinding of the cable 14. As a still non-limiting example, the cable sensor 20 includes a plurality of measuring wheels 32 for engaging the cable 14. Each of the measuring wheels 32 is mounted on an encoder assembly 34 so that one rotation of the measuring wheel 32 is monitored by an associated coder set among the coder sets 34, as appreciated by one skilled in the art of coders. A winding signal (i.e., pulse output) is generated by encoder assembly 34 in response to a rotation of an associated wheel of metering wheels 32. The winding signal represents the winding/unwinding characteristics of cable 14 and can be analyzed to determine at least a length of cable 14 that passes through cable sensor 20 and a cable wrap/unwind ratio 14. It is understood that any suitable sensor can be used to measure cable 14 characteristics.
    [018] The processor 22 is in data communication with the force sensors 16, 18 and the cable sensor 20 to receive data signals (e.g., force signal and winding signal) therefrom and analyze the signals on the basis of in a predetermined algorithm, mathematical process, or equation, for example. As shown in Fig. 2, processor 22 analyzes and evaluates received data based on an instruction set 36. Instruction set 36, which can be embedded within any computer-readable medium, includes processor-executable instructions for configuring the processor 22 to perform a variety of tasks and calculations. It is understood that instruction set 36 may include at least one of an algorithm, a mathematical process, and an equation for calculating a cable voltage 14. It is further understood that the processor 22 may perform a variety of functions, such as controlling various adjustments of force sensors 16, 18 and cable sensor 20, for example.
    [019] By way of non-limiting example, the processor 22 includes a storage device 38. The storage device 38 can be a single storage device or they can be multiple storage devices. In addition, storage device 38 can be a solid-state storage system, a magnetic storage system, an optical storage system, or any other suitable storage system or device. It is understood that storage device 38 is adapted to store instruction set 36. In certain embodiments, data relating to cable 14 or reelable device (e.g., known, predetermined or measured) is stored in storage device 38, such as as a mass per unit of length (ie weight per unit of length), a total length of cable 14, and a history of previous measurements and calculations. Other data and information can be stored in storage device 38, such as calculated parameters by processor 22 and a database of physical characteristics (eg, mass per unit length) for various types of cables, for example. It is further understood that certain known parameters may be stored in storage device 38 to be retrieved by processor 22.
    [020] By way of further non-limiting example, processor 22 includes a programmable device or component 40. In certain embodiments, the programmable device includes a human-machine interface (not shown). It is understood that programmable device or component 40 may be in communication with any other component of strain measurement system 10, such as force sensors 16, 18 and cable sensor 20, for example. In certain embodiments, programmable component 40 is adapted to manage and control processing functions of processor 22. Specifically, programmable component 40 is adapted to control the analysis of data signals received by processor 22. It is understood that programmable component 40 it can be adapted to store data and information on storage device 38, and retrieve data and information from storage device 38.
    [021] In certain embodiments, processor 22 is in data communication with a control system or controller 42 to provide centralized management of system 10. As a non-limiting example, processor 22 communicates with control system 42 via a Controller Area Network (CAN) Bus. However, other networks, architectures and protocols can be used. Processor 22 may also be in data communication with other equipment 44 to send and receive data and control signals between them.
    [022] In use, the system 10 is initialized when no cable tension is applied to the drum 24, thereby allowing the force sensors 16, 18 to identify the weight of the drum having no initial component forces due to a tension in the cable 14 The weight of the drum is defined as a weight of the drum 24 having a predetermined length of cable 14 wound thereon. The initial drum weight vector (including magnitude and direction relative to the coordinate system of force sensors 16, 18) is stored in storage device 38 and invoked by processor 22 to subsequently calculate a tension in cable 14, as herein Described below.
    [023] Once the initial drum weight vector is stored, the cable 14 is deployed and retrieved by the winding device 12. As the cable 14 is routed through the cable sensor 20, the force sensors 16, 18 measure forces along a predetermined coordinate system, while cable sensor 20 measures the winding/unwinding characteristics of cable 14. Processor 22 receives the force signals from force sensors 16, 18 and the winding signal from the cable sensor 20. Processor 22 analyzes incoming signals to compute a voltage on cable 14.
    [024] It is understood that during operation, a length of cable 14 that is wound on drum 24 is continuously changing. For example, when cable 14 is deployed from drum 24, a force acting on shaft 26 of winding device 12, due to a weight of a coiled portion of cable 14, is reduced. Conversely, when cable 14 is retrieved and wound onto drum 24, a force acting on shaft 26 of winding device 12, due to a weight of a wound portion of cable 14, is increased. As such, a portion of the forces measured by the force sensors 16, 18 is due to the weight of the drum 24, together with an instantaneous weight of the coiled portion of the cable 14. A remaining portion of the forces measured by the force sensor 16, 18 is directly proportional to the tension in the cable.
    [025] In certain embodiments, the processor 22 computes the instantaneous weight of the coiled portion of the cable 14 by analyzing the initial weight of the drum 24 and a length of the cable 14 wrapped therein and a weight of a portion of the cable 14 that has been unwound from the drum 24 since the initial weight was measured. It is understood that the instantaneous drum weight is equal to the initial drum weight minus the weight of the portion of rope 14 that has been unwound since the initial drum weight was measured. It is further understood that, in the situation where the cable 14 is being wound onto the drum 24, after the initial weight has been measured, the weight of a length of the cable 14 being wound up is additive to the initial drum weight.
    [026] By way of non-limiting example, a length of cable 14 that has been unwound from drum 24 since the initial drum weight was measured can be retrieved from the winding signal generated by cable sensor 20. The length of cable 14 that has been unwound since the initial drum weight was measured is multiplied by an associated weight per unit length (retrieved from storage device 38) to compute a weight of a portion of cable 14 that has been unwound since the initial weight was measured. Therefore, the initial drum weight minus the weight of unwound cable is equal to the weight of the drum together with the weight of a wound portion of the cable 14. Zeroing the portion of forces representing the weight of the drum 24 and the wound portion of the cable 14, the remaining portion of the forces measured by the force sensors 16, 18 are analyzed using known formulas in mechanics to determine a tension in the cable 14.
    [027] By way of non-limiting example, the forces measured by force sensors 16, 18 along each of the axes can be added together to generate a unique force vector along a cable displacement path 14. In a further example, cable 14 is shown being deployed directly along a Z axis of the coordinate system of force sensors 16, 18. As such, the forces measured by force sensors 16, 18 along the Y axis are representative of a weight of the drum 24 and the coiled portion of the rope 14, while the cumulative forces measured by the force sensors 16, 18 along the Z axis are representative of the tension in the rope 14. However, it is understood that the tension in the rope 14 can be computed in any path or direction with respect to the coordinate system of the force sensors 16, 18, using components of the forces measured along predefined axes, as would be appreciated by technicians in classical mechanics. It is further understood that other equations, formulas and algorithms can be used to calculate a tension in the cable 14. In addition, it is understood that the cable 14 or winding device can be directed from the tension measuring system 10 to a bore hole. well penetrating an underground formation in order to perform operations within the wellbore such as, but not limited to, data logging operations, sampling operations, wellbore treatment operations such as, but not limited to, operations fracturing operations, acid treatment operations, drilling operations, completion operations, seismic operations, and the like.
    [028] The foregoing description has been presented with reference to presently preferred embodiments of the invention. Those skilled in the art and technology to which this invention belongs will appreciate that changes and modifications in the structures and methods of operation described can be practiced without departing significantly from the principle and scope of this invention. Therefore, the foregoing description is not to be read as pertaining only to the precise structures described and shown in the accompanying drawings, but rather is to be read as consistent with and in support of the following claims, which will have their fullest and fairest scope.
    权利要求:
    Claims (13)
    [0001]
    1. VOLTAGE MEASUREMENT ASSEMBLY (10) FOR MEASURING AND MONITORING A TENSION FORCE IN A CABLE (14) BEING DEPLOYED FROM A WINDING DEVICE (12) IN WHICH THE CABLE (14) IS WRAPED, comprising: a device winding (12); a chassis (30); a drum (24) between the chassis (30); and an axle (26) disposed through the drum (24) and engaged with a bearing (28) mounted on the chassis (30); the cable (14) operatively disposed on the drum (24); wherein the tension measuring assembly (10) is characterized by further comprising: a pair of force sensors (16, 18), wherein a force sensor of the pair of force sensors (16, 18) is adjacent to a end of the shaft (26) and the other force sensor of the pair of force sensors (16, 18) is disposed adjacent to the other end of the shaft (26), and wherein the pair of sensors (16, 18) is operatively positioned to measure the force between the shaft (26) and the bearings (28), and wherein the pair of force sensors (16, 18) generate force signals representing the force measured between the shaft (26) and the bearings (28 ); a cable sensor (20) operatively arranged to measure the winding/unwinding characteristics of the cable (14) and generating a winding signal representing the measured winding/unwinding characteristics, and a processor (22) to compute and monitor the force of tension in the cable (14) in response to the force signals and the winding signal, where the processor (22) is in communication with a data store (38), where the data store (38) has a weight initial drum stored therein, wherein the initial drum weight is equal to the weight of the drum (24) with a predetermined length of cable wound thereon, and wherein the processor (22) calculates an instantaneous drum weight (24) using the winding signal, and wherein the processor (22) calculates the tension in the cable (14) using the force signals and calculated instantaneous weight.
    [0002]
    An assembly according to claim 1, characterized in that said at least one force sensor comprises a multi-axis force sensor.
    [0003]
    An assembly according to claim 1, characterized in that said force sensors (16, 18) comprise a multi-axis transducer for measuring forces along a predetermined coordinate system.
    [0004]
    4. TENSION MEASUREMENT ASSEMBLY (10) FOR MEASURING AND MONITORING A TENSION FORCE IN A CABLE (14) BEING DEPLOYED FROM A WINDING DEVICE (12) IN WHICH THE CABLE (14) IS WRAPED, comprising: a device winding (12); a chassis (30); a drum (24) between the chassis (30); and an axle (26) disposed through the drum (24) and engaged with a bearing (28) mounted on the chassis (30); the cable (14) operatively disposed on the drum (24); wherein the tension measuring assembly (10) is characterized by further comprising: a force sensor (16, 18) adjacent to an end of the shaft (26), and operatively positioned to measure a force between the shaft (26) and the bearings (28), and wherein the force sensor (16, 18) generates a force signal representing the force measured between the shaft (26) and the bearings (28); a cable sensor (20) operatively arranged to measure the winding/unwinding characteristics of the cable (14) and generating a winding signal representing the measured winding/unwinding characteristics; and a processor (22) for computing and monitoring the tension force on the cable (14) in response to the force signal and the winding signal, wherein the processor (22) is in communication with a data store (38), wherein the data store (38) has an initial drum weight stored therein, wherein the initial drum weight is equal to the weight of the drum (24) with a predetermined length of cable wound thereon, and wherein the processor (22) calculates an instantaneous weight of the drum (24) using the winding signal, and wherein the processor (22) calculates the tension in the cable using the force signals and calculated instantaneous weight.
    [0005]
    Assembly, according to claim 4, characterized in that said force sensors (16, 18) comprise a multi-axis force sensor.
    [0006]
    An assembly according to claim 4, characterized in that said force sensors (16, 18) comprise a multi-axis transducer for measuring forces along a predetermined coordinate system.
    [0007]
    An assembly according to claim 4, characterized in that said cable sensor (20) comprises a measuring wheel (32) for engaging the cable (14) and an encoder (34) for measuring a rotation of the measuring wheel (32) due to a movement of the cable.
    [0008]
    An assembly according to claim 4, characterized in that the cable winding/unwinding characteristic (14) comprises at least one of a winding/unwinding rate and a length of cable moving by said cable sensor in a period of predetermined time.
    [0009]
    9. METHOD FOR MEASURING AND MONITORING A TENSION FORCE IN A WINDING DEVICE, characterized in that it comprises: providing a winding device (12) for deploying and retrieving the winding device, wherein the winding device (12) comprises a chassis (30 ), a drum (24) between the chassis (30), and an axle (26) disposed across the drum (24) and supported at each end by bearings (28) on the chassis (30); driving the winding device from the winding device to and from a downstream point; providing at least one force sensor (16, 18) disposed adjacent to one of the ends of the shaft (26) and operatively positioned to measure a force between the bearing (28) and the end of the shaft (26), and generate a signal of force representing the measured force; providing a winding device sensor (20) arranged to measure winding/unwinding characteristics of the winding device and generating a winding signal representing the measured winding/unwinding characteristics; and calculating the tension force in the winding device based on the force signal from the at least one force sensor and the winding signal from the sensor of the winding device (20), wherein the calculation is performed using the communicating processor (22) with the data store (38), and wherein the data store (38) has an initial drum weight stored therein, wherein the initial drum weight is equal to the weight of the drum (24) with a predetermined length of cable wrapped therein, and wherein the processor (22) calculates an instantaneous weight of the drum (24) using the winding signal, and wherein the processor (22) calculates the tension in the cable (14) using the force and calculated instantaneous weight.
    [0010]
    Method according to claim 9, characterized in that the at least one force sensor (16, 18) is a multi-axis force sensor.
    [0011]
    A method according to claim 9, characterized in that the winding/unwinding characteristic of the winding device is at least one of a winding/unwinding rate and a length of the winding device moving by the sensor of the winding device (20) at a predetermined period of time.
    [0012]
    A method according to claim 9, characterized in that it further comprises a step of calculating a drum weight, wherein the step of calculating the tension force in the winding device is based on the force sensor force signal, on the signal of winding device sensor (20) and drum weight (24).
    [0013]
    Method according to claim 9, characterized in that the reelable device comprises a steel cable.
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    CN111006807B|2019-12-19|2021-04-20|厦门洪海机械有限公司|Real-time measurement and control adjusting device for tension of torrid-resistant belt|
    法律状态:
    2018-12-26| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-06-18| B06T| Formal requirements before examination [chapter 6.20 patent gazette]|
    2020-04-07| B06A| Notification to applicant to reply to the report for non-patentability or inadequacy of the application [chapter 6.1 patent gazette]|
    2020-07-28| B06A| Notification to applicant to reply to the report for non-patentability or inadequacy of the application [chapter 6.1 patent gazette]|
    2021-04-06| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-06-29| B09X| Decision of grant: republication|
    2021-07-06| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 08/04/2011, OBSERVADAS AS CONDICOES LEGAIS. PATENTE CONCEDIDA CONFORME ADI 5.529/DF, QUE DETERMINA A ALTERACAO DO PRAZO DE CONCESSAO. |
    优先权:
    申请号 | 申请日 | 专利标题
    US12/757,146|2010-04-09|
    US12/757,146|US20110251803A1|2010-04-09|2010-04-09|Assembly, system, and method for cable tension measurement|
    PCT/IB2011/051510|WO2011125046A2|2010-04-09|2011-04-08|Assembly, system and method for cable tension measurement|
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