GB2087177B - Method and apparatus for stabilizing a carrier tracking loop - Google Patents

Method and apparatus for stabilizing a carrier tracking loop

Info

Publication number
GB2087177B
GB2087177B GB8115020A GB8115020A GB2087177B GB 2087177 B GB2087177 B GB 2087177B GB 8115020 A GB8115020 A GB 8115020A GB 8115020 A GB8115020 A GB 8115020A GB 2087177 B GB2087177 B GB 2087177B
Authority
GB
United Kingdom
Prior art keywords
stabilizing
tracking loop
carrier tracking
carrier
loop
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
GB8115020A
Other versions
GB2087177A (en
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.)
Schlumberger Technology Corp
Original Assignee
Schlumberger Technology 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
Priority claimed from US05/881,459 external-priority patent/US4215425A/en
Priority claimed from US05/881,460 external-priority patent/US4185246A/en
Priority claimed from US05/881,461 external-priority patent/US4215427A/en
Application filed by Schlumberger Technology Corp filed Critical Schlumberger Technology Corp
Publication of GB2087177A publication Critical patent/GB2087177A/en
Application granted granted Critical
Publication of GB2087177B publication Critical patent/GB2087177B/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • E21B47/20—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 by modulation of mud waves, e.g. by continuous modulation
    • 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
    • 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
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/08—Details of the phase-locked loop
    • H03L7/10—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range
    • H03L7/101—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range using an additional control signal to the controlled loop oscillator derived from a signal generated in the loop
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/08—Details of the phase-locked loop
    • H03L7/10—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range
    • H03L7/107—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range using a variable transfer function for the loop, e.g. low pass filter having a variable bandwidth
    • H03L7/1075—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range using a variable transfer function for the loop, e.g. low pass filter having a variable bandwidth by changing characteristics of the loop filter, e.g. changing the gain, changing the bandwidth
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/22—Demodulator circuits; Receiver circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/22—Demodulator circuits; Receiver circuits
    • H04L27/227—Demodulator circuits; Receiver circuits using coherent demodulation
    • H04L27/2275—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses the received modulated signals
GB8115020A 1978-02-27 1979-02-27 Method and apparatus for stabilizing a carrier tracking loop Expired GB2087177B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US05/881,459 US4215425A (en) 1978-02-27 1978-02-27 Apparatus and method for filtering signals in a logging-while-drilling system
US05/881,460 US4185246A (en) 1978-02-27 1978-02-27 Circuit for reducing transients by precharging capacitors
US05/881,461 US4215427A (en) 1978-02-27 1978-02-27 Carrier tracking apparatus and method for a logging-while-drilling system

Publications (2)

Publication Number Publication Date
GB2087177A GB2087177A (en) 1982-05-19
GB2087177B true GB2087177B (en) 1983-02-02

Family

ID=27420508

Family Applications (3)

Application Number Title Priority Date Filing Date
GB8115020A Expired GB2087177B (en) 1978-02-27 1979-02-27 Method and apparatus for stabilizing a carrier tracking loop
GB7906841A Withdrawn GB2015307A (en) 1978-02-27 1979-02-27 Method and apparatus for demodulating signals in a well logging while drilling system
GB8115019A Expired GB2094578B (en) 1978-02-27 1979-02-27 Method and apparatus for reducing capacitor-switching transient signals

Family Applications After (2)

Application Number Title Priority Date Filing Date
GB7906841A Withdrawn GB2015307A (en) 1978-02-27 1979-02-27 Method and apparatus for demodulating signals in a well logging while drilling system
GB8115019A Expired GB2094578B (en) 1978-02-27 1979-02-27 Method and apparatus for reducing capacitor-switching transient signals

Country Status (13)

Country Link
AU (3) AU524811B2 (en)
BR (1) BR7901224A (en)
DE (1) DE2907085A1 (en)
FR (2) FR2434522A1 (en)
GB (3) GB2087177B (en)
GR (1) GR66583B (en)
IE (1) IE48319B1 (en)
IN (1) IN153402B (en)
IT (1) IT1111989B (en)
NL (1) NL191549C (en)
NO (1) NO790496L (en)
OA (1) OA06193A (en)
PH (1) PH18212A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106154311A (en) * 2016-08-25 2016-11-23 中国电建集团贵阳勘测设计研究院有限公司 Uphole single pore sound wave test device in one

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1206089A (en) * 1982-06-10 1986-06-17 Gary D. Berkenkamp Method and apparatus for signal recovery in a logging while drilling system
US4514706A (en) * 1982-09-24 1985-04-30 Rockwell International Corporation Second or higher order PLL with increased low and medium frequency gain
GB2168879A (en) * 1984-11-19 1986-06-25 Technophone Ltd Differential phase shift keying detector
US4885553A (en) * 1988-11-30 1989-12-05 Motorola, Inc. Continuously adaptive phase locked loop synthesizer
JP2798142B2 (en) * 1990-06-15 1998-09-17 三菱電機株式会社 Frequency synthesizer
DE4102800A1 (en) * 1991-01-31 1992-08-06 Thomson Brandt Gmbh Phase-locked loop with drift compensation for CD player, etc. - varies equalisation voltage of PLL until bit error rate is minimised during playing of disc
US5283768A (en) * 1991-06-14 1994-02-01 Baker Hughes Incorporated Borehole liquid acoustic wave transducer
EP0584998B1 (en) * 1992-08-12 1996-11-20 Halliburton Company Method and device for detecting pressure pulses
US5969638A (en) * 1998-01-27 1999-10-19 Halliburton Energy Services, Inc. Multiple transducer MWD surface signal processing
GB2347286B (en) * 1999-02-26 2001-04-18 Motorola Ltd Frequency tracking loop and method of frequency tracking
US8286257B2 (en) 2008-06-02 2012-10-09 Schlumberger Technology Corporation Enabling synchronous and asynchronous collaboration for software applications
US8302685B2 (en) * 2009-01-30 2012-11-06 Schlumberger Technology Corporation Mud pulse telemetry data modulation technique
CN106761711B (en) * 2016-12-26 2024-02-02 中石化江汉石油工程有限公司 Multifunctional communication control system for downhole instrument
RU2722968C1 (en) * 2019-08-22 2020-06-05 Акционерное общество "Всероссийский научно-исследовательский институт "Градиент" Acoustic active aerial objects detection device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3916307A (en) * 1974-02-14 1975-10-28 Hekimian Laboratories Inc Time jitter meter
GB1485663A (en) * 1975-03-19 1977-09-14 Mobil Oil Corp Details of an uphole receiver for a logging-while-drilling system
US4007429A (en) * 1976-01-19 1977-02-08 Gte International Incorporated Phase-locked loop having a switched lowpass filter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106154311A (en) * 2016-08-25 2016-11-23 中国电建集团贵阳勘测设计研究院有限公司 Uphole single pore sound wave test device in one

Also Published As

Publication number Publication date
FR2433860B1 (en) 1984-02-24
FR2433860A1 (en) 1980-03-14
AU8567282A (en) 1982-11-04
GB2094578A (en) 1982-09-15
PH18212A (en) 1985-04-30
DE2907085A1 (en) 1979-10-25
NL191549B (en) 1995-05-01
NL7901534A (en) 1979-08-29
GR66583B (en) 1981-03-27
GB2015307A (en) 1979-09-05
NO790496L (en) 1979-08-28
IN153402B (en) 1984-07-14
IT1111989B (en) 1986-01-13
IT7920429A0 (en) 1979-02-22
IE790561L (en) 1979-08-27
FR2434522A1 (en) 1980-03-21
AU4462179A (en) 1979-10-18
IE48319B1 (en) 1984-12-12
AU8567382A (en) 1982-12-23
GB2087177A (en) 1982-05-19
BR7901224A (en) 1979-10-02
AU524811B2 (en) 1982-10-07
NL191549C (en) 1995-09-04
OA06193A (en) 1981-06-30
GB2094578B (en) 1983-06-08

Similar Documents

Publication Publication Date Title
GB2099195B (en) Method and apparatus for securing data transmissions
GB1549933A (en) Carrier wave recovery apparatus
JPS5375673A (en) Method of and apparatus for carrying container
GB2087177B (en) Method and apparatus for stabilizing a carrier tracking loop
IL58882A0 (en) Method and apparatus for epitaxial solidification
JPS5520295A (en) Method and apparatus for synthesizing ammonia
GB2014217B (en) Method and apparatus for forming holes
GB2111717B (en) Method and apparatus for loading a slide mount
JPS5457570A (en) Method and apparatus for making recording carrier
GB1541368A (en) Method and apparatus for loading a continuous feeder
PH20464A (en) Carrier tracking apparatus and method for a logging-while-drilling system
ZA782472B (en) Method and apparatus for providing a spray
GB2037706B (en) Tape carrier
JPS5340153A (en) Method of and apparatus for positioning and supporting objects
GB2036304B (en) Tape transport apparatus and method
IL57498A0 (en) Method and apparatus for jumigating
GB2029139B (en) Method and apparatus for carrier regeneration
IL56382A0 (en) Method and apparatus for a radiotelephone communications system
JPS5386299A (en) Preparating method and apparatus for particless suspended solution
GB2038071B (en) Tape advancing methods and apparatus
JPS5373193A (en) Transferring method and apparatus for substance
GB2024471B (en) Method of checking reference zones on a data carrier and arrangement for putting the method into practice
JPS55126033A (en) Method and device for labeling
JPS54110937A (en) Method and apparatus for fast plating
JPS54163016A (en) Method of recording data on carrier and device for executing same method

Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19960227