EP0129953A3 - Method and apparatus for digitizing the maximum amplitude and time occurrence of an acoustic signal - Google Patents

Method and apparatus for digitizing the maximum amplitude and time occurrence of an acoustic signal Download PDF

Info

Publication number
EP0129953A3
EP0129953A3 EP84302033A EP84302033A EP0129953A3 EP 0129953 A3 EP0129953 A3 EP 0129953A3 EP 84302033 A EP84302033 A EP 84302033A EP 84302033 A EP84302033 A EP 84302033A EP 0129953 A3 EP0129953 A3 EP 0129953A3
Authority
EP
European Patent Office
Prior art keywords
maximum amplitude
stored
time
sample value
occurrence
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.)
Withdrawn
Application number
EP84302033A
Other languages
German (de)
French (fr)
Other versions
EP0129953A2 (en
Inventor
Billy Gene Ballard
Charles Louis Dennis
Donald Michael Williams
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 EP0129953A2 publication Critical patent/EP0129953A2/en
Publication of EP0129953A3 publication Critical patent/EP0129953A3/en
Withdrawn legal-status Critical Current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

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)
  • Geophysics And Detection Of Objects (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Electrophonic Musical Instruments (AREA)

Abstract

Digitizing and transmitting the maximum amplitude and time of occurrence of an analog signal is proposed for borehole televiewing apparatus to reduce the amount of data transmitted from a borehole tool to surface imaging equip­ ment. During at least one established time window, the analog signal is amplitude sampled with an analog-to-digital converter 11. Each sample value is fed to a comparator 15 and compared with a previously stored maximum amplitude sample value and, if the present sample is greater than stored, it is stored as the new maximum amplitude sample value. Whenever a new maximum amplitude sample value is stored, its time of occurrence is also stored. At the end of each time window digital data representing the maximum amplitude and its time of occurrence are available for transmission so as to allow reconstruction of the original analog signal.
EP84302033A 1983-06-24 1984-03-27 Method and apparatus for digitizing the maximum amplitude and time occurrence of an acoustic signal Withdrawn EP0129953A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US50736983A 1983-06-24 1983-06-24
US507369 1983-06-24

Publications (2)

Publication Number Publication Date
EP0129953A2 EP0129953A2 (en) 1985-01-02
EP0129953A3 true EP0129953A3 (en) 1986-06-25

Family

ID=24018375

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84302033A Withdrawn EP0129953A3 (en) 1983-06-24 1984-03-27 Method and apparatus for digitizing the maximum amplitude and time occurrence of an acoustic signal

Country Status (3)

Country Link
EP (1) EP0129953A3 (en)
CA (1) CA1251866A (en)
NO (1) NO841650L (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4199729A (en) * 1975-03-20 1980-04-22 Compagnie Industrielle des Telecommunications Cit-Aicatel Variable peak detector
GB2094473A (en) * 1981-03-10 1982-09-15 Standard Oil Co Method and apparatus for logging boreholes
US4382290A (en) * 1977-07-11 1983-05-03 Schlumberger Technology Corporation Apparatus for acoustically investigating a borehole

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4199729A (en) * 1975-03-20 1980-04-22 Compagnie Industrielle des Telecommunications Cit-Aicatel Variable peak detector
US4382290A (en) * 1977-07-11 1983-05-03 Schlumberger Technology Corporation Apparatus for acoustically investigating a borehole
GB2094473A (en) * 1981-03-10 1982-09-15 Standard Oil Co Method and apparatus for logging boreholes

Also Published As

Publication number Publication date
NO841650L (en) 1984-12-27
CA1251866A (en) 1989-03-28
EP0129953A2 (en) 1985-01-02

Similar Documents

Publication Publication Date Title
EP1892840A3 (en) Time compression/expansion without pitch change
DE3169302D1 (en) Transmitting a voice signal and data on a single channel
UA37174C2 (en) System of digital transfer and transmitter and receiver used in the system
EP0271805A3 (en) Transmission system
ES2121751T3 (en) DIGITAL ADDITIONAL MAIN LINE SYSTEM.
EP0303190A3 (en) Method of forming halftone screen
DE3477535D1 (en) Method and device to convert a sampled input signal sequence into a sampled output signal sequence
GB2032209B (en) Method and apparatus for converting analogue ultrasonic echo signals into digital form
EP0145788A4 (en) Method and apparatus for transmitting digital signal.
ES8703219A1 (en) Method and apparatus for converting a digital data
HK65697A (en) Method for transmitting a video signal
EP0129953A3 (en) Method and apparatus for digitizing the maximum amplitude and time occurrence of an acoustic signal
AU3269184A (en) Simultaneous digitizing of all receivers in acoustic tool
ATE60183T1 (en) METHOD OF DIGITAL TRANSMISSION OF TEST SIGNALS IN TEST LINES OF A VIDEO SIGNAL.
EP0099638A3 (en) A method and system of data transmission for a borehole logging tool
DE3269696D1 (en) A method of and measuring instrument for measuring the overall phase and amplitude distortion of a transmission channel
SE8506145L (en) PROCEDURE FOR IMPROVING THE RESPONSIBILITY OF PICTURES RECEIVED BY LATERAL SONAR EQUIPMENT AND DEVELOPMENT
AU558426B2 (en) Multidimensional dpcm coding of video signals
JPS53119602A (en) Data transmission system
EP0798876A3 (en) Circuit for line matching and echo suppressing
EP0081223A3 (en) Method of transmitting digital colour image signals
US20030007141A1 (en) Apparatus and method for reducing transmission noise inteference of scanner
EP0234257B1 (en) Method for the digital transmission of test signals in the test lines of a video signal
RU1821933C (en) Method of digital information transmission by broadband signals
JPS5793756A (en) Transmission system for digital data using digital-to- analog, analog-to-digital conversion

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): DE FR GB NL

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE FR GB NL

17P Request for examination filed

Effective date: 19861120

17Q First examination report despatched

Effective date: 19880413

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19881025

RIN1 Information on inventor provided before grant (corrected)

Inventor name: DENNIS, CHARLES LOUIS

Inventor name: BALLARD, BILLY GENE

Inventor name: WILLIAMS, DONALD MICHAEL