Drilling Rate Of Penetration

Abstract

Rate of penetration (ROP) measurement system (10) has sensor apparatus on a drill rig detecting drilling advancement. Sender (38, 200) transmits to a receiver (40, 204), optionally via a reflector (39, 208). An electronic sub (201) can include the sender (200), receiver (204) or reflector (208). Reflector (39, 208) reflects signals to the receiver (40, 204). Distance measurement or space mapping can use LIDAR/laser and MEMS mirror. Releasable attachment to the drill rig can be by magnet (112). Atmospheric or barometric pressure can be detected and pressure change can be used to determine distance moved. WOB, RPM, torque and time rate of progress can be measured and combined with distance moved measurements to assess wear on a drill bit. Near real time

ROP measurement can be calculated and displayed (17) and/or reported (21). Drilling efficiency and premature drill wear or change in rock can be determined.

Claims

1. A drilling rate of penetration or distance moved measurement system for a drilling operation, the system including at least one sensor apparatus including at least one sensor to provide an indication of rate and/or distance a drill bit or other tool advances into a borehole, and at least one processor, wherein the at least one sensor is utilised to, measure and provide to the processor a sensed indication of an incremental distance travelled relative to a fixed point during an elapsed time, and the processor calculates from the sensed indication of incremental distance and the elapsed time for the incremental distance travelled a measure of the rate of penetration (ROP), wherein the elapsed time is very small, enabling any one or more of ROP, and change in ROP to be output in real or near real time.

2. The system of claim 1, including a timer providing a measure of the elapsed time during which the drill bit or other tool advances into the borehole.

3. The system of claim 1, wherein the elapsed time is based on a sample rate for the sensor.

4. The system of claim 1, wherein the at least one sensor including an acceleration sensor and/or a position sensor in relation to movement of a drill mast, wherein the movement of the drill mast is measured to indicate the incremental distance travelled.

5. The system of claim 1, wherein the at least one sensor includes at least one pressure sensor, wherein the at least one pressure sensor includes at least one atmospheric pressure sensor or barometric pressure sensor arranged and configured to detect a change in environmental/surrounding air pressure, and wherein the at least one atmospheric pressure sensor or barometric pressure sensor includes at least one such sensor arranged to move with advancing or withdrawing movement of a drill, drill rod, downhole instrument or other downhole tool or tube/pipe, and including at least one reference relative to the moving at least one atmospheric pressure sensor or barometric pressure sensor, and wherein a first atmospheric pressure sensor or barometric pressure sensor is arranged to move up and/or down during respective movement of a drill/drill string or other downhole tool, and a second atmospheric pressure sensor or barometric pressure sensor provides the reference.

6. (canceled)

7. (canceled)

8. (canceled)

9. (canceled)

10. (canceled)

11. The system of claim 5, wherein the first atmospheric pressure sensor or barometric pressure sensor and/or the second or reference atmospheric pressure sensor or barometric pressure sensor is releasably mounted to a drill or drilling mast, and wherein the releasable mounting is any one or more of: by magnetic attachment through at least one magnet provided on the respective first and/or second atmospheric pressure sensor or barometric pressure sensor, tie strap(s), adhesive, or mechanical fastener(s).

12. (canceled)

13. (canceled)

14. The system of claim 5, wherein the first and/or the second atmospheric pressure sensor or barometric pressure sensor includes any one or more of: a memory for storing pressure values and/or altitude values, a transmitter configured to transmit detected values to the other of the barometric pressure sensor or the atmospheric pressure sensor.

15. (canceled)

16. The system of claim 5, wherein two or more said sensor apparatus, in use, synchronise with one another.

17. The system of claim 1, wherein at least one said sensor apparatus is enabled to self-calibrate to a value provided from another said sensor apparatus or from a reference apparatus.

18. The system of claim 1, wherein the at least one sensor of the respective sensor apparatus includes at least one sensor selected from: an accelerometer or multi-axis accelerometer, one or more electromagnetic wave sensors, one or more of a LIDAR sensor, MEMS mirror, radar sensor, ultrasonic sensor, optical sensor, camera, resistance sensor, magneto-resistive sensor, microwave sensor, infrared sensor, at least one gyroscopic sensor, and at least one sensor includes a multi axis gyroscopic detector.

19. (canceled)

20. The system of claim 1, including at least one threshold detector, and wherein the threshold detector provides an alert when optimisation parameters have dropped below a preferred state.

21. (canceled)

22. (canceled)

23. The system of claim 20, wherein the at least one sensor apparatus is configured to interface with other sensors or sensor arrangements/apparatus that detect or measure acceleration, inertia, gyroscopic values, force, torque, pressure, vibration, temperature, and (mud) flow, or a combination of any two or more thereof.

24. The system of claim 23, including display means and recording means, or communication means to communicate measurements for remote display and recordal.

25. (canceled)

26. The system of claim 4, wherein the at least one sensor apparatus is mounted on a drilling mast via one or more resilient mounts, and wherein the one or more resilient mounts includes rubber, urethane or other vibration damping materials.

27. (canceled)

28. (canceled)

29. (canceled)

30. (canceled)

31. (canceled)

32. (canceled)

33. (canceled)

34. The system of claim 1, including any one of: a transmitter/sender mounted on a moving part of a drill rig to transmit a signal to a detector/receiver on a fixed part of the drill rig, and the receiver/detector transmits time of flight/distance data to a remote user interface/computer; a transmitter/sender on an electronic sub to transmit/send a signal to a reflector on a fixed part of the drill rig and receives the reflected signal back, then the signal/data is sent wirelessly to the user interface/computer; a first sender/transmitter to send a signal to a first detector/receiver at a fixed position of the drill rig, and a second sender/transmitter at a fixed position of the rig sends a signal to a second detector/receiver on the mast, and distance measurement can be processed for each receiver, and measured/processed data can be transmitted by each apparatus to a remote user interface/computer; and a sender/transmitter sending a signal from a fixed position of the drill rig to a reflector on the mast of the drill rig, then the sensor receives the reflected signal, processes data and sends to the remote user interface/computer.

35. (canceled)

36. (canceled)

37. (canceled)

38. (canceled)

39. A method of controlling drilling performance of a drilling system, the method including determining rate of penetration (ROP) of the drill during drilling, determined based on a sensor output providing a sensed indication of an incremental distance travelled relative to a fixed point during an elapsed time, and calculating from the sensed indication of incremental distance and the elapsed time for the incremental distance travelled a measure of the rate of penetration, and controlling at least one of: weight on bit (WOB), flow of drilling fluid, torque applied to the drill bit and revolutions per minute (RPM) of the drill bit utilising the determined ROP, wherein the elapsed time is very small, enabling any one or more of ROP, and change in ROP to be output in real or near real time.

40. (canceled)

41. (canceled)

42. The method of claim 39, including determining rate of penetration from sensing one or more of acceleration and/or position, either or both of downhole or in relation to movement of a drill mast, wherein the movement of the drill mast is measured to indicate the incremental distance travelled, using one or more sensors, sensing relative change in movement of the drill bit, drill string or component of the drill mast, or a combination of two or more thereof, wherein the movement of the drill mast is measured to indicate the incremental distance travelled.

43. (canceled)

44. (canceled)

45. The method of claim 39, including sensing atmospheric pressure or barometric pressure using at least one sensor sensing atmospheric or barometric pressure while moving with advancing or withdrawing movement of a drill, drill rod, downhole instrument or other downhole tool or tube/pipe including providing at least one reference relative to the moving at least one atmospheric pressure sensor or barometric pressure sensor, wherein a first said atmospheric pressure sensor or barometric pressure sensor is arranged to move up and/or down during respective movement of a drill/drill string or other downhole tool, and a second said atmospheric pressure sensor or barometric pressure sensor provides the reference, and wherein the first atmospheric pressure sensor or barometric pressure sensor transmits change in pressure/altitude or absolute values thereof to the second atmospheric pressure sensor or barometric pressure sensor.

46. (canceled)

47. (canceled)

48. (canceled)

49. (canceled)

50. (canceled)

51. (canceled)

52. (canceled)

53. (canceled)

54. (canceled)

55. (canceled)

56. (canceled)

57. (canceled)

58. The method of claim 39, including time stamping and/or position/location stamping measurements of progress and/or rate of progress of drilling.

59. The method of claim 39, including performing temperature compensation calibration of the at least one sensor apparatus, at least one said sensor being accelerometer(s) and/or gyroscopic sensor(s).

60. The method of claim 39, including detecting at least one threshold, and including any one or more of: alerting when optimisation parameters have dropped below the preferred state; monitoring one or more of RPM, WOB, flow of drilling fluid, torque, and providing a warning or alert to an operator and/or initiating slowing or stopping of drilling when a drilling parameter meets or exceeds the threshold.

61. (canceled)

62. (canceled)

63. (canceled)

64. (canceled)

65. (canceled)

66. (canceled)

67. (canceled)

68. (canceled)

69. (canceled)

70. (canceled)

71. (canceled)

72. (canceled)

73. The method of claim 39, including any one or more of: a first sender/transmitter sending a signal to a first detector/receiver at a fixed position of the drill rig, and a second sender/transmitter at the a fixed position of the rig sending a signal to a second detector/receiver on the mast, and distance measurement is processed for each said detector/receiver, and measured/processed data is transmitted by each apparatus to a remote user interface/computer; a sender/transmitter sending a signal from a fixed position of the drill rig to a reflector on the mast of the drill rig, then the sensor receives the reflected signal, processes data and sends to the remote user interface/computer.

74. (canceled)

75. (canceled)

76. (canceled)

77. (canceled)

78. A method of controlling drilling performance of a drilling system, the method including determining rate of penetration (ROP) of the drill during drilling, by obtaining from a sensor an indication of an incremental distance advanced by the drill bit relative to a fixed position during a period of drilling, and calculating rate of penetration of the drill bit from the sensed indication of incremental distance and an elapsed time of drilling, wherein the elapsed time is very small, enabling any one or more of ROP, change in ROP and change in depth to be output in real or near real time and using the ROP to influence control of at least one of: weight on bit (WOB), flow of drilling fluid, torque applied to the drill bit and revolutions per minute (RPM) of the drill bit.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0109] One or more embodiments of the present invention will hereinafter be described with reference to the accompanying drawings, in which:

[0110] FIG. 1 shows a schematic arrangement of an embodiment of the present invention associated with a drilling operation.

[0111] FIG. 2 shows a drawstring type distance encoder mounted to a drilling rig in relation to an embodiment of the present invention.

[0112] FIG. 3 shows an alternative view of the features shown in FIG. 2.

[0113] FIG. 4 shows at least one alternative embodiment of the present invention.

[0114] FIG. 5 shows a chart of variation of height through measured change in atmospheric/barometric pressure for advancement of a drill/drillstring for a drilling operation according to an embodiment of the present invention.

[0115] FIG. 6 shows an example of a sensor apparatus according to an embodiment of the present invention.

[0116] FIG. 7 shows a transmitter/sender for sending an EM signal, such as a light, laser, optical, IR signal) to a detector, and the detector sends data to a user interface/computer wirelessly, according to an embodiment of the present invention.

[0117] FIG. 8 shows the EM signal sent by a transmitter/sender from an electronic sub to a reflector, and receives the reflected signal back, then this data is optionally combined with all the other data, then sent wirelessly to the user interface/computer, according to an embodiment of the present invention.

[0118] FIG. 9 shows and EM sender/transmitter sending a signal to detector at a fixed position of rig, and a sender/transmitter at a fixed position of the rig sends a signal to the receiver on the mast. Distance measurement can be processed for each receiver, and measured/processed data can be transmitted by each apparatus to a remote user interface/computer, according to an embodiment of the present invention.

[0119] FIG. 10 shows an EM sender/transmitter sending a signal from a fixed position of rig to reflector on the mast of the drill rig, then the sensor receives the reflected signal, processes data and sends to the remote user interface/computer, according to an embodiment of the present invention.

DESCRIPTION OF PREFERRED EMBODIMENT(S)

[0120] In the following detailed description, reference is made to accompanying drawings which form a part of the detailed description. The illustrative embodiments described in the detailed description, depicted in the drawings and defined in the claims, are not intended to be limiting. Other embodiments may be utilised and other changes may be made without departing from the spirit or scope of the subject matter presented.

[0121] It will be readily understood that the aspects of the present disclosure, as generally described herein and illustrated in the drawings can be arranged, substituted, combined, separated and designed in a wide variety of different configurations, all of which are contemplated in this disclosure.

[0122] One or more forms of the present invention find(s) particular application in diamond hard rock boring applications in the field of mineral exploration.

[0123] During diamond drilling, a bore hole is drilled into the earth by the drill rig by driving a rotating hollow shaft with a diamond impregnated bit attached at a fixed position of the drill string.

[0124] As the bore hole is drilled deeper into the earth, the drill string is lengthened by adding rods at the surface.

[0125] The ROP sensing apparatus/system of the present invention measures the rate of penetration of the drill bit as the rock is eroded by the cutting action of the diamond bit. During this operation, the drill fluid (e.g. drilling mud) flows down the hollow drill stem through the drill bit and is forced back to the surface carrying the drill cuttings to the surface as well as providing lubrication and cooling of the drill bit.

[0126] One or more embodiments of the present invention can obtain the following measurements: the physical condition of a drilling bit, the rate of rotation of the drill bit, weight applied to the drill bit (such as by the downward pressure from the weight of the drill rods attached above the drill bit as well as the downward applied force from the drill rig), the viscosity of the drilling fluid and the rate of fluid around the flow loop down and back up the borehole.

[0127] During drilling, a variable that cannot be detected directly is the physical condition of the bit.

[0128] A method that can be used to measure drill bit condition is to apply constant weight on bit and rate of rotation then monitor penetration rate of the borehole as rock is diminished and the borehole progresses. Decreasing penetration rates can be a sign of a deteriorating drill bit.

[0129] One or more forms of the present invention advantageously provide for very small increments of depth penetration to be determined or measured, and preferably, penetration distance over fixed time intervals to determine the rate of the depth of cut. Such very small increments can be measured by one or more embodiments of the present invention in the millimetre or sub millimetre ranges, such as +/−1.0 mm.

[0130] Preferably a user interface has clear digital readouts/display(s) and preferably a charted history feature for real time and post drilling analysis. Operators benefit from being able to assess and compare the performance their drillers across their operating drill rig fleet.

[0131] ROP related data obtained by the present invention can be communicated to a remote location to provide a record and monitoring of daily performance of the drilling operation(s).

[0132] One or more embodiments of the present invention advantageously provide(s) for reduction or avoidance of erroneous measurements caused by vibration during the drilling process.

[0133] Calculation of ROP from a position signal requires differentiation, which can amplify high frequency noise, and given that the total range of the position signal is of the order of 10 m, there can be a trade-off in bandwidth between acceptable noise and signal response. Therefore, to maximise the signal-to-noise ratio, a distance sensor with digital output can be used to avoid the introduction of any noise during the transmission of the signal between the distance sensor and data acquisition system, and any noise introduced by the data acquisition system itself.

[0134] As such, one or more distance sensors with either a pulse or SSI digital output can be used given they can be synchronised with other signals measured by a data acquisition system, and are supported by a large range of the data acquisition systems.

[0135] Furthermore, most data acquisition systems that can interface with these type of signals are also capable of providing the sensor power supply, which avoids the need for external power supplies to the distance sensor(s).

[0136] Given that the distance sensor may need to be retrofitted to an existing drill rig, the distance sensor can have a mounting arrangement configured for various mounting position options.

[0137] A ‘draw wire’ sensor with rotary encoder has been determined to be a useable type of distance sensor, such as a Micro-Epsilon WDS-10000-P115-TTL or WDS-10000-P115-SSI draw wire sensor.

[0138] One or more embodiments of the present invention may incorporate an optical shaft encoder.

[0139] For example, an optical shaft encoder can be adopted which measures angular displacement. For example, measuring 0° to 360° divided by 4096 counts provides a resolution of angular displacement of approximately 0.09°, which provides a measure of movement of the encoder, and therefore of the drill string, in microns.

[0140] The chord or cable draw string of the sensor pulls the encoder, converting angular to linear displacement. One or more timers or clocks can be used to help determine rate of movement (and therefore ROP) by differentiating the distance measure with respect to time. Use of one or more GPS clocks provides an accurate time measure and therefore a rate that becomes linear velocity.

[0141] An alternative or additional sensor may include at least one of: an accelerometer or multi-axis accelerometer, one or more electromagnetic wave sensors—such as one or more of a LIDAR sensor, MEMS mirror, radar sensor, microwave sensor, infrared sensor, and/or at least one gyroscopic sensor.

[0142] One or more of the aforementioned sensors can be provided at the surface and/or downhole. For example, one or more accelerometers and/or electromagnetic wave sensors may be provided on a masthead to detect movement of a drill string or top drive as the drill string is advanced into the ground during drilling. Rate of penetration and or distance travelled can be measured by a change in distance detected by the sensor and/or by changes in motion/movement.

[0143] One or more optical sensors may be provided to sense advancing movement as the drill advances and/or to sense rate of penetration. For example, one or more cameras may be provided to move as drilling advances. The one or more cameras may observe a fixed indicator. Change in relative size of features the fixed indicator can be used to determine change in distance from the camera(s) to the indicator. Change in spacing between multiple indicators may also or alternatively be used to determine change in distance.

[0144] It will be appreciated that the indicator(s) can move with the advancement of drilling whilst the camera(s) remains fixed i.e. the opposite of the aforementioned setup.

[0145] A resistance sensor, such as a magneto-resistive sensor, may be used to determine movement indicating rate of penetration or advancement of the drilling, or both. For example, the magneto-resistive sensor may use magnetism/electromagnetism to detect a change in resistance relative to a fixed member in order to indicate change in distance or rate of change of movement.

[0146] It will be appreciated that one or more embodiments of the present invention provides a reliable measure of instantaneous rate of penetration (ROP).

[0147] As a result of utilising the present invention, drilling performance can be assessed objectively based on the obtained ROP and other preferred parameters, such as weight on bit (WOB).

[0148] Furthermore, by utilising the present invention, it is possible to track evolution of drilling performance over time and/or borehole depth.

[0149] Also, utilising the present invention enables a drill operator to assess the effect of control parameters on ROP, and thereby maintain or modify a current drilling activity for optimisation.

[0150] Utilising the present invention, it is preferably possible to generate a reporting plot of drilling performance measures, such as ROP vs depth, a histogram/chart of ROP per rod or depth, such as at 30 m, 100 m depth etc. Mean and variance in ROP can also be monitored and reported.

[0151] In use, as a drill bit advances into a borehole during drilling, the chord or cable extends from the encoder. The advanced distance is measured by the encoder. Comparing this distance to time taken to advance, a rate of penetration is calculated. An operator or an automatic control system then controls one or more drilling parameters to keep the drilling operation within required limits. If the rate of penetration is too slow (leading to poor productivity), the operator or system may speed up RPM and/or may increase WOB. Alternatively, if ROP is too high (risking premature wear or damage to the drill bit), RPM or WOB may be decreased.

[0152] Automatic control of drilling can be provided with a feedback of the continuously or periodically monitored ROP. Real time monitoring of ROP enables drill rig operators to optimise drilling to prevent premature wear or failure of the drill bit.

[0153] As shown in FIG. 1, an embodiment of the present invention provides a system 10 of obtaining and utilising rate of penetration measurements. An encoder 14 provides 15 distance data to a computer 12. The encoder is of the drawstring type whereby the free end of the drawstring is attached to a drilling assembly that advances with the drill bit as drilling progresses. The drawstring causes an internal rotary encoder to rotate, providing a measure of distance advanced. The computer or other timer can associate the distance measured with a time elapsed during that advancement. Thus, real time rate of penetration measurement can be calculated and displayed 17 and/or reported 21.

[0154] The time component can be obtained 23 from satellite 22 (GPS) timing for accuracy.

[0155] Other sensors provide measures, such as RPM, torque, flow and/or pressure of drilling fluid etc., which are shown, along with the ROP measurement on a display 16.

[0156] Power for the system 10 or the sensor/encoder 14 can be obtained from energy harvesting 25, such as by harvesting energy 24 from drilling vibrations, temperature fluctuations, solar energy, wind power, and/or a combination of one or more thereof.

[0157] Reports 20 can be produced 21 providing monitoring and records of drilling operations. Furthermore, reports and/or data from other drilling operations can be combined with data from the present drilling operation, such as a comparison of rate of penetration data across different drilling rigs, to derive a useful understanding of the type and variability of rock strata at depths. This information can be used to plan other drilling operations and/or where mineral deposits might be found or not found.

[0158] The system can utilise wireless 18 communications. For example, the encoder mounted high up on a drilling mast of a drilling rig may communicate 19 wirelessly to a computer or other receiver apparatus communicating with the computer. This avoids the need for installation of communication cables, and power cables may be shortened by connection to the energy harvesting system 24.

[0159] As shown in FIGS. 2 and 3, a distance encoder 14 (in this embodiment being a drawstring operated encoder for measuring distance) is mounted to the mast 30 of a drill rig. The free end 34 of the drawstring is attached to the movable top drive assembly 32. As the top drive assembly advances downwards during drilling when the drill bit is penetrating the rock, the drawstring is pulled, which causes the rotary apparatus within the housing of the encoder to indicate a distance measure in real time.

[0160] As shown by way of example in FIG. 4, instead of, or in addition to, a distance encoder referred to in FIGS. 2 and 3, one or more embodiments of the present invention may include at least one distance sensor utilising electromagnetic wave detection and/or acceleration and/or gyroscopic effects. Rate of penetration and/or distance travelled as the drill string advances during drilling can be detected by measuring, at the surface, the change in distance of a travelling component of the masthead relative to a fixed component.

[0161] For example, as shown in FIG. 4, an electromagnetic wave apparatus 36 measures ‘time of flight’ and/change in ‘time of flight’ of an electromagnetic signal, such as relative to a transmitter/sender 38 and reflector 39 or detector/receiver 40 arrangement.

[0162] Alternatively, or in addition, one or more motion detection apparatus 42, such as one or more accelerometers or and/or gyroscopic apparatus 44 may be provided to detect changes in movement/motion of the drill string, such as rate of change of motion of the masthead as the drill string advances.

[0163] It will be appreciated that the accelerometer(s) may include a tri-axial-accelerometer.

[0164] The motion sensor apparatus and/or the distance sensor may be battery powered, such as having an internal rechargeable or replaceable battery, and/or may use vibration for energy harvesting, such as via an internal piezoelectric apparatus.

[0165] As shown with regard to FIG. 5, atmospheric or barometric pressure changes can be used to measure/detect changes in altitude/height.

[0166] Preferably at least one sensor apparatus detects changes in barometric or atmospheric air pressure. At least one other sensor apparatus can be provided to detect barometric or atmospheric air pressure as a reference against which to compare the changes detected by the at least one sensor apparatus.

[0167] For example, the at least one other sensor apparatus may be mounted or attached to a lower portion of a drilling equipment, such as a stickup of a pipe casing from a drilling operation, to provide the reference pressure.

[0168] At least one sensor apparatus can be mounted to or attached to a movable portion of a drilling rig/mast or to a drill pipe to be advanced towards or into the ground.

[0169] Attachment or mounting for any of the sensor apparatus may be by magnets removably attaching the respective apparatus(s) to metal structure of the drilling equipment, such as the drill mast/rig or stickup or other suitable site equipment.

[0170] Any changes to the pressure sensed by the at least one sensor moving up or down during drilling operations as the drill respectively advances or is withdrawn can be compared to the fixed reference and a determination of rate of penetration, advancement/distance the drill rods/bit have progressed and/or rate or distance of withdrawal from the drill hole, can be determined.

[0171] FIG. 5 shows distance in metres on they axis derived from change of sensed atmospheric/barometric pressure relative to incremental counts on the x axis.

[0172] The right hand section of the chart clearly shows the drilling progress, of around 3 metres (from approximately a relative height of 4.5 m progressing to a relative height of approximately 1.5 m) with respect to a reference value.

[0173] The sensor apparatus may be programmed to detect one another, such as by push button calibration by a user or automatically when in range or in contact with each other. For example, ‘bumping’ two said sensor apparatus together may be used to activate calibration to the present temperature and/or air pressure at that position.

[0174] Alternatively or in addition, one or more of the sensor apparatus can include a transmitter and/or receiver arranged and configured to communicate respective data sensed or measured by the respective apparatus, such as one or more of a value or change in value of sensed atmospheric/barometric air pressure, distance, acceleration/deceleration, altitude, speed, rate of change of acceleration or deceleration (aka ‘jerk’), temperature and/or humidity. The sensed or measured data can be transmitted to a remote apparatus, such as a computer, tablet, laptop, data recorder etc., for instantaneous readout and/or later processing.

[0175] As shown by way of example in FIG. 6, a sensor apparatus 100 of an embodiment of the present invention includes a body 102.

[0176] A control button 104 can be provided to initiate/start the apparatus and/or to have the apparatus calibrate to a reference and/or to a similar apparatus and/or to a computer 120, such as a laptop.

[0177] One or more indicator lights, such as lights 106, 108 can be provided. One or more of the lights can show that data is recording and/or has successfully recorded or been transmitted, or that the apparatus is operating correctly, or that the apparatus has successfully set to a reference value, or that the apparatus is on/off, or that the apparatus is communicating data, or combinations of two or more thereof.

[0178] The body houses a transmitter and/or receiver apparatus 110 for transmitting and/or receiving data.

[0179] The body can include attachment means, such as one or more magnets 112 for magnetically removably attaching the sensor apparatus to equipment, such as to a drilling mast. The magnets may allow two or more of the sensor apparatus to be attached together for storage and/or transport, reducing the risk of the apparatus being inadvertently separated, which can be particularly useful if the apparatus are used in pairs wherein they can be calibrated together and then one set in a fixed position and the other attached to move with movement of the moving portion of the equipment to which it is attached.

[0180] The sensor apparatus can include at least one atmospheric air/barometric pressure sensor to detect an air pressure value and/or changes in air pressure.

[0181] The sensor apparatus can include at least one battery 116. Alternatively, or in addition, energy harvesting means 118, such as a piezo-electronic energy producer harvesting vibrational energy from movement of the apparatus in use, may be provided. The battery may be charged from surplus harvested energy.

[0182] One or more other sensors 120 may be provided instead of or in combination with the atmospheric air/barometric pressure sensor. For example, humidity sensor, one or more accelerometers, one or more gyroscopes, or a combination of any two or more thereof.

[0183] As shown by way of example in FIG. 7, a transmitter/sender 200 (e.g. an EM (optical, laser, IR) mounted on a moving part of a drill rig 202, such as an electronic sub, part of the drill string, top drive, transmits a signal to a detector/receiver 204. The receiver/detector can transmit time of flight/distance data to a remote user interface/computer 206.

[0184] FIG. 8 shows an EM signal sent by a transmitter/sender 200 from an electronic sub 201 to a reflector 208, and receives the reflected signal back, then this data is optionally combined with all the other data, then sent wirelessly to the user interface/computer 206, according to an embodiment of the present invention.

[0185] It will be appreciated that a transmitter/sender and/or receiver/detector mounted on a rotating portion of the mast, such as on an electronic sub, may be utilise din a system embodying the present invention wherein averaging of the transmitted/received signal and detector values to produce an accurate distance/velocity can be used. A high number of signals, particularly in the case of laser/optical/IR light signals is possible due to the large number of samples in a revolution. For example, 1000 RPM provides 16 rotations in one second. The average measurement for laser is around 20 Nano seconds, and sampling at, say, 50 Hz, provides a high sample rate at different points of the rotation. Vibration may be detected/measured by such a sensor arrangement. The reflector may be annular/circular, and an annular/circular apparatus at the base of the rig may be provided for maximum resolution. Around 16 Hz sampling may be achieved with one reflection point.

[0186] FIG. 9 shows and EM sender/transmitter 200 sending a signal to detector 204 at a fixed position of rig, and a sender/transmitter 200 at a fixed position of the rig sends a signal to the receiver 204 on the mast. Distance measurement can be processed for each receiver, and measured/processed data can be transmitted by each apparatus to a remote user interface/computer 206, according to an embodiment of the present invention.

[0187] FIG. 10 shows an EM sender/transmitter sending a signal from a fixed position of rig to reflector on the mast of the drill rig, then the sensor receives the reflected signal, processes data and sends to the remote user interface/computer 206, according to an embodiment of the present invention.

[0188] LIDAR can be used to obtain depth information. Embodiments of the present invention can employ one or more Augmented Reality (AR) and/or Artificial Intelligence (AI) algorithms/processes to determine specific measurement between points on the drill rig. For example, recognising a feature of the drill rig as a reference point, and camera and the LIDAR focus on that recognised reference as a datum.

[0189] Sensing can utilise MEMS mirror technology, such as using at least one laser to reflect off a MEMS mirror to determine spatial distance and/or determine space details/measurements. MEMS mirror technology can use a single mirror and multiple lasers, or multiple mirrors with a single laser or multiple lasers.

[0190] Use of LIDAR scanning as part of the sensor arrangement or apparatus of embodiment of the present invention enable use of image depth information about the scanned/viewed environment, such as the drill rig. Image depth information can be used by embodiments of the present invention for distance measurement, such as spacing between features on the drill rig, identifying a reference/datum point and movement relative to that reference datum point.

[0191] Combining three dimensional mesh data and depth information enables placement of virtual objects within viewed/sensed environment, such as on the drill rig. Such functionality allows for enhanced measurement data and allows for location and position information to be attributed to an image.

[0192] Microelectromechanical mirror systems (MEMS) or microoptoelectromechanical systems (MOEMS), such as using mirror/micro-scanning mirror devices and/or light engines may be employed in one or more embodiments of the present invention to create 3D optical spatial maps, such as of the drill rig or parts thereof.

[0193] Microelectromechanical mirrors (MEMS) systems can include a laser directed to a rapidly spinning (e.g. tilt-turn) mirror reoriented to view a space. A second dimension can use a second mirror that moves up and down or another laser can illuminate the first mirror but from a different angle from the first laser. Shock/vibration resilience can be provided to dampen vibrations that might otherwise put the MEMS system out of calibration.

[0194] Mirrors, photodetectors, silicon optical bench technology e.g. wafer level optical integration technology may be employed.

[0195] For example, a MEMS scanner module for 3D distance measurement using a laser/LIDAR sender/transmitter can be employed on the drill rig, such as with a single sending mirror, and a synchronized microscanner array as receiver unit.

[0196] In the claims which follow and in the preceding description of the invention, except where the context requires otherwise due to express language or necessary implication, the word “comprise” or variations such as “comprises” or “comprising” is used in an inclusive sense, i.e. to specify the presence of the stated features but not to preclude the presence or addition of further features in various embodiments of the invention.