GB1420895A - Logging-while-drilling encoder - Google Patents

Logging-while-drilling encoder

Info

Publication number
GB1420895A
GB1420895A GB653774A GB653774A GB1420895A GB 1420895 A GB1420895 A GB 1420895A GB 653774 A GB653774 A GB 653774A GB 653774 A GB653774 A GB 653774A GB 1420895 A GB1420895 A GB 1420895A
Authority
GB
United Kingdom
Prior art keywords
motor
phase
data
shift
detectors
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB653774A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ExxonMobil Oil Corp
Original Assignee
Mobil Oil Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mobil Oil Corp filed Critical Mobil Oil Corp
Publication of GB1420895A publication Critical patent/GB1420895A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00—Survey of boreholes or wells
    • E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
    • E21B47/14—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves
    • E21B47/18—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid, e.g. mud pressure pulse telemetry
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
    • H02P23/18—Controlling the angular speed together with angular position or phase
    • H02P23/186—Controlling the angular speed together with angular position or phase of one shaft by controlling the prime mover
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S388/00—Electricity: motor control systems
    • Y10S388/90—Specific system operational feature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S388/00—Electricity: motor control systems
    • Y10S388/90—Specific system operational feature
    • Y10S388/901—Sample and hold
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S388/00—Electricity: motor control systems
    • Y10S388/907—Specific control circuit element or device
    • Y10S388/911—Phase locked loop
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S388/00—Electricity: motor control systems
    • Y10S388/907—Specific control circuit element or device
    • Y10S388/922—Tuned or resonant circuit

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Remote Sensing (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Geophysics (AREA)
  • Acoustics & Sound (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Power Engineering (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Control Of Electric Motors In General (AREA)

Abstract

1420895 Signalling by sound waves MOBIL OIL CORP 13 Feb 1974 [12 March 1973] 6537/74 Heading G4F In a system for transmitting the measurement data from one or more down-well detectors D1 ... D4 to the surface, the data is sent by acoustic signals in the well liquid and by phaseshift keying utilizing a motor 11, a data pulse changing the speed of the motor from a predetermined value, a control pulse is generated on the occurrence of a predetermined phase shift in the acoustic signal to terminate that motor speed change, and the control pulse changes the motor speed to return it to its predetermined value but with a shift in phase of the acoustic signal. In the embodiment the analogue data from the detectors is multiplexed and converted into serial digital form. In the absence of a " 1 " data bit motor 11 is controlled by retroactive phase-locking to a stable clock 12, Fig. 2 (not shown); a " 1 " data bit into control unit 32 causes disabling of the phase-locking loop and acceleration of motor 11 which is thereafter decelerated to effect 180 degrees phase-shift keying, Fig. 3 (not shown).
GB653774A 1973-03-12 1974-02-13 Logging-while-drilling encoder Expired GB1420895A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00340137A US3820063A (en) 1973-03-12 1973-03-12 Logging-while-drilling encoder

Publications (1)

Publication Number Publication Date
GB1420895A true GB1420895A (en) 1976-01-14

Family

ID=23332044

Family Applications (1)

Application Number Title Priority Date Filing Date
GB653774A Expired GB1420895A (en) 1973-03-12 1974-02-13 Logging-while-drilling encoder

Country Status (7)

Country Link
US (1) US3820063A (en)
AR (1) AR216884A1 (en)
BR (1) BR7401865A (en)
CA (1) CA999366A (en)
EG (1) EG12300A (en)
FR (1) FR2221617B1 (en)
GB (1) GB1420895A (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3968473A (en) * 1974-03-04 1976-07-06 Mobil Oil Corporation Weight-on-drill-bit and torque-measuring apparatus
US4103281A (en) * 1976-09-29 1978-07-25 Schlumberger Technology Corporation Measuring-while-drilling system having motor speed detection during encoding
US4167000A (en) * 1976-09-29 1979-09-04 Schlumberger Technology Corporation Measuring-while drilling system and method having encoder with feedback compensation
US4100528A (en) * 1976-09-29 1978-07-11 Schlumberger Technology Corporation Measuring-while-drilling method and system having a digital motor control
US4189705A (en) * 1978-02-17 1980-02-19 Texaco Inc. Well logging system
US4215427A (en) * 1978-02-27 1980-07-29 Sangamo Weston, Inc. Carrier tracking apparatus and method for a logging-while-drilling system
US4303994A (en) * 1979-04-12 1981-12-01 Schlumberger Technology Corporation System and method for monitoring drill string characteristics during drilling
US4479564A (en) * 1979-04-12 1984-10-30 Schlumberger Technology Corporation System and method for monitoring drill string characteristics during drilling
US4630244A (en) * 1984-03-30 1986-12-16 Nl Industries, Inc. Rotary acting shear valve for drilling fluid telemetry systems
US5371448A (en) * 1987-06-30 1994-12-06 Deutsche Thomson-Brandt Gmbh Motor control circuit with continuous phase control
US5237540A (en) * 1992-08-21 1993-08-17 Schlumberger Technology Corporation Logging while drilling tools utilizing magnetic positioner assisted phase shifts
US5375098A (en) * 1992-08-21 1994-12-20 Schlumberger Technology Corporation Logging while drilling tools, systems, and methods capable of transmitting data at a plurality of different frequencies
US5293937A (en) * 1992-11-13 1994-03-15 Halliburton Company Acoustic system and method for performing operations in a well
US5358059A (en) * 1993-09-27 1994-10-25 Ho Hwa Shan Apparatus and method for the dynamic measurement of a drill string employed in drilling
US5581254A (en) * 1994-03-30 1996-12-03 Burr-Brown Corporation Electric motor control chip and method
US5531112A (en) * 1994-05-20 1996-07-02 Computalog U.S.A., Inc. Fluid holdup tool for deviated wells
GB9607297D0 (en) * 1996-04-09 1996-06-12 Anadrill Int Sa Noise detection and suppression system for wellbore telemetry
CA2966729A1 (en) 2014-12-05 2016-06-09 Halliburton Energy Services, Inc. Downhole clock calibration apparatus, systems, and methods
CN105401936B (en) * 2015-11-16 2018-03-09 中国石油大学(华东) Rotary valve rotating speed controls the reconstructing method of pulse

Also Published As

Publication number Publication date
EG12300A (en) 1979-06-30
US3820063A (en) 1974-06-25
CA999366A (en) 1976-11-02
BR7401865A (en) 1975-11-11
AR216884A1 (en) 1980-02-15
FR2221617B1 (en) 1977-09-23
FR2221617A1 (en) 1974-10-11

Similar Documents

Publication Publication Date Title
GB1420895A (en) Logging-while-drilling encoder
GB1328527A (en) Control circuit for a stepping motor
SE7508933L (en) DIGITAL TRANSMISSION SYSTEM FOR TRANSMISSION OF NUMBER SIGNALS AT LOW BIT SPEED, AND A TRANSMITTER FOR USE IN SUCH SYSTEM.
FR2275938A1 (en) PULSE SIGNAL TRANSMISSION SYSTEM WITH FIXED CLOCK FREQUENCY
DE3171333D1 (en) Evaluation circuit for a digital rotational speed transducer
GB1214416A (en) Network for producing two quadrature periodic signals
GB1212340A (en) Transmission system comprising a transmitter and a receiver for the transmission of information in a prescribed frequency band
GB1377583A (en) Communication systems
JPS547082A (en) System to manage going over the speed limit
GB1312550A (en) System for the transmission of information at very low signal- to-noise ratios
ES424220A1 (en) Apparatus for receiving a frequency and phase coded vehicle control signal
GB1404133A (en) Anemometers
GB1210742A (en) Device for the transmission of synchronous pulse signals
GB1124680A (en) Frequency modulation and demodulation apparatus
GB1281169A (en) Improvements in or relating to phase modulation transmission systems
IE45473L (en) Effective downhole measurements in a well during drilling
GB1527732A (en) Digital phase locked loop
GB1279106A (en) Clock frequency and phase correction
GB1151421A (en) Improvements in or relating to Data Transmission Systems
FR2389894A1 (en) Instantaneous mean speed display for vehicle - has counter which processes signals from sensor to produce output representing distance from datum point
SU894857A1 (en) Phase-to-frequency converter
GB1154503A (en) Method of Evaluating Frequency Shift Data Signals
JPS5294110A (en) Phase synchronizer using modified fm method
JPS6476165A (en) Data interpolation device
JPS52138973A (en) Collection of information of under-water temperature and depth

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years

Effective date: 19940212