GB2343002A - Method and apparatus for signal bandpass sampling in measurement-while -drilling applications - Google Patents

Method and apparatus for signal bandpass sampling in measurement-while -drilling applications

Info

Publication number
GB2343002A
GB2343002A GB0000117A GB0000117A GB2343002A GB 2343002 A GB2343002 A GB 2343002A GB 0000117 A GB0000117 A GB 0000117A GB 0000117 A GB0000117 A GB 0000117A GB 2343002 A GB2343002 A GB 2343002A
Authority
GB
United Kingdom
Prior art keywords
wellbore
receiver
electromagnetic
transmitter
housing
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.)
Granted
Application number
GB0000117A
Other versions
GB0000117D0 (en
GB2343002B (en
Inventor
Larry W Thompson
Macmillan Morgan Wisler
David Mark Schneider
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.)
Baker Hughes Holdings LLC
Original Assignee
Baker Hughes Inc
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 Baker Hughes Inc filed Critical Baker Hughes Inc
Publication of GB0000117D0 publication Critical patent/GB0000117D0/en
Publication of GB2343002A publication Critical patent/GB2343002A/en
Application granted granted Critical
Publication of GB2343002B publication Critical patent/GB2343002B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/18—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging
    • G01V3/30—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging operating with electromagnetic waves

Landscapes

  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • Remote Sensing (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

A logging apparatus is provided for use in a wellbore for measuring an attribute of at least one of the wellbore and a surrounding formation, when coupled to a wellbore tubular expended in the wellbore. The logging apparatus includes a housing, at least one transmitter and at least one receiver. The transmitter is carried by the housing and is individually and selectively operable for producing electromagnetic interrogating signal at selected interrogation frequency for passage to the wellbore and surrounding formation. The receiver is carried by the housing in a selected position relative to the transmitter, and is tuned to receive electromagnetic signals at the interrogation frequency to the exclusion of other frequencies. A portion of at least one of the wellbore and surrounding formation has an attribute value which can be derived from at least one of amplitude attenuation of electromagnetic interrogating signal as determined from measurements of the electromagnetic interrogating signals taken through the receiver, and phase shift of electromagnetic interrogating signal as determined from measurements of electromagnetic signal taken through the receiver. The apparatus further includes means for sampling signals from the receiver or receivers at a sampling frequency which is less than the interrogation frequency. A controller member is provided for selectively energizing the transmitters and for selectively obtaining measurements of the electromagnetic interrogating signal with the receivers, and determining an accurate measure of the attribute value.
GB0000117A 1997-07-02 1997-07-02 Method and apparatus for signal bandpass sampling in measurement-while -drilling applications Expired - Lifetime GB2343002B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1997/011665 WO1999001785A1 (en) 1997-07-02 1997-07-02 Method and apparatus for signal bandpass sampling in measurement-while-drilling applications

Publications (3)

Publication Number Publication Date
GB0000117D0 GB0000117D0 (en) 2000-02-23
GB2343002A true GB2343002A (en) 2000-04-26
GB2343002B GB2343002B (en) 2002-01-09

Family

ID=22261208

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0000117A Expired - Lifetime GB2343002B (en) 1997-07-02 1997-07-02 Method and apparatus for signal bandpass sampling in measurement-while -drilling applications

Country Status (3)

Country Link
AU (1) AU3593197A (en)
GB (1) GB2343002B (en)
WO (1) WO1999001785A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7818840B2 (en) 2007-11-09 2010-10-26 Integrated Medical Systems, Inc. Foldable, portable trauma treatment and monitoring patient platform
US8033281B2 (en) 2007-11-09 2011-10-11 Todd Douglas Kneale Modular transportable life support device
ITRM20100479A1 (en) * 2010-09-15 2012-03-16 Istituto Naz Di Geofisica E Vulcanologia PERMITTENCE METER AND ELECTRIC RESISTIVITY FOR NON-INVASIVE INVESTIGATIONS ON MATERIALS

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0314573A2 (en) * 1987-10-30 1989-05-03 Schlumberger Limited Well logging apparatus and method
WO1991003114A1 (en) * 1989-08-16 1991-03-07 Titan Linkabit Corporation Conversion of analog signal into i and q digital signals with enhanced image rejection

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0314573A2 (en) * 1987-10-30 1989-05-03 Schlumberger Limited Well logging apparatus and method
WO1991003114A1 (en) * 1989-08-16 1991-03-07 Titan Linkabit Corporation Conversion of analog signal into i and q digital signals with enhanced image rejection

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
"A SIMPLE METHOD FOR SAMPLING IN-PHASE AND QUADRATURE COMPONENTS" RADER CM, IEEE TRANSACTIONS *
ON AEROSPACE AND ELECTRONIC SYSTEMS, vol. AES-20 no.6 NOVEMBER 1984, PAGES 821-824 *

Also Published As

Publication number Publication date
GB0000117D0 (en) 2000-02-23
WO1999001785A1 (en) 1999-01-14
AU3593197A (en) 1999-01-25
GB2343002B (en) 2002-01-09

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Expiry date: 20170701