CA2150188A1 - Methods and devices for real-time formation imaging through measurement-while-drilling telemetry - Google Patents

Methods and devices for real-time formation imaging through measurement-while-drilling telemetry

Info

Publication number
CA2150188A1
CA2150188A1 CA002150188A CA2150188A CA2150188A1 CA 2150188 A1 CA2150188 A1 CA 2150188A1 CA 002150188 A CA002150188 A CA 002150188A CA 2150188 A CA2150188 A CA 2150188A CA 2150188 A1 CA2150188 A1 CA 2150188A1
Authority
CA
Canada
Prior art keywords
formation
toolface
resistivity measurements
resistivity
methods
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
CA002150188A
Other languages
French (fr)
Other versions
CA2150188C (en
Inventor
Bernard Montaron
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 Canada Ltd
Original Assignee
Bernard Montaron
Schlumberger Technology Corporation
Schlumberger Canada Limited
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 Bernard Montaron, Schlumberger Technology Corporation, Schlumberger Canada Limited filed Critical Bernard Montaron
Publication of CA2150188A1 publication Critical patent/CA2150188A1/en
Application granted granted Critical
Publication of CA2150188C publication Critical patent/CA2150188C/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
    • G01V3/20—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging operating with propagation of electric current
    • 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
    • G01V3/34—Transmitting data to recording or processing apparatus; Recording data

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Measuring And Recording Apparatus For Diagnosis (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

Methods for providing an image at the surface of a formation surrounding a borehole in real-time include associating resistivity measurements with a predetermined number of preselected toolface positions. The resistivity measurements are subjected to data compression and transmitted uphole by MWD
telemetry. At the surface, the compressed resistivity measurements are associated with the preselected toolface positions and with a calculated translational distance value. The resistivity measurements are decompressed and/or converted to pixel information. The pixel information is arranged according to toolface position and translational distance to create a high resolution of the formation. These processes are repeated over time so that the image created represents the formation over a selected distance. Apparatus of the invention used to perform the methods include an MWD telemetry device, at least one downhole formation resistivity sensor, and downhole device(s) for determining the toolface of the resistivity sensor. Downhole processor(s) are provided for synchronizing, selecting and compressing resistivity measurements. On the surface, a translational distance sensor is provided along with processor(s) for associating, converting, and arranging. At the surface, the associated information is used to form an image of the formation spanning a number of translational distance values.
CA002150188A 1994-05-26 1995-05-25 Methods and devices for real-time formation imaging through measurement-while-drilling telemetry Expired - Lifetime CA2150188C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/249,412 1994-05-26
US08/249,412 US5519668A (en) 1994-05-26 1994-05-26 Methods and devices for real-time formation imaging through measurement while drilling telemetry

Publications (2)

Publication Number Publication Date
CA2150188A1 true CA2150188A1 (en) 1995-11-27
CA2150188C CA2150188C (en) 2002-03-12

Family

ID=22943375

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002150188A Expired - Lifetime CA2150188C (en) 1994-05-26 1995-05-25 Methods and devices for real-time formation imaging through measurement-while-drilling telemetry

Country Status (5)

Country Link
US (1) US5519668A (en)
EP (1) EP0684490B1 (en)
CA (1) CA2150188C (en)
DE (1) DE69526387D1 (en)
NO (1) NO314816B1 (en)

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Publication number Priority date Publication date Assignee Title
US9022140B2 (en) 2012-10-31 2015-05-05 Resource Energy Solutions Inc. Methods and systems for improved drilling operations using real-time and historical drilling data

Also Published As

Publication number Publication date
EP0684490B1 (en) 2002-04-17
CA2150188C (en) 2002-03-12
NO952064D0 (en) 1995-05-24
DE69526387D1 (en) 2002-05-23
NO952064L (en) 1995-11-27
EP0684490A2 (en) 1995-11-29
NO314816B1 (en) 2003-05-26
EP0684490A3 (en) 1997-10-15
US5519668A (en) 1996-05-21

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Effective date: 20150525