APPARATUS AND METHOD FOR CLOCK SHIFT CORRECTION FOR MEASUREMENT-WHILE-DRILLING MEASUREMENTS

Title:

APPARATUS AND METHOD FOR CLOCK SHIFT CORRECTION FOR MEASUREMENT-WHILE-DRILLING MEASUREMENTS

Document Type and Number:

WIPO Patent Application WO2008070754

Kind Code:

B1

Abstract:

The disclosure provides a method which includes transmitting signals over a time period between a downhole location and a surface location during drilling of a wellbore; recording the time of each signal at the surface using a surface clock and the time of each signal downhole using a downhole clock; and correcting the downhole measurements using the recorded times.

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Inventors:

DASHEVSKIY DMITRIY (DE)
MCGINLEY PAT (US)
MACPHERSON JOHN (US)
BROOKS ANDREW G (US)
DAHL THOMAS (DE)
PINNELL MITCHELL G (US)
CAIRNS PAUL G (US)
RANDALL ROBIN F (US)
HILL MARK A (US)
ROBNETT EDWARD (US)

Application Number:

PCT/US2007/086565

Publication Date:

July 24, 2008

Filing Date:

December 06, 2007

Export Citation:

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Assignee:

BAKER HUGHES INC (US)
DASHEVSKIY DMITRIY (DE)
MCGINLEY PAT (US)
MACPHERSON JOHN (US)
BROOKS ANDREW G (US)
DAHL THOMAS (DE)
PINNELL MITCHELL G (US)
CAIRNS PAUL G (US)
RANDALL ROBIN F (US)
HILL MARK A (US)
ROBNETT EDWARD (US)

International Classes:

G01V1/42; E21B47/12

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