Apparatus and Method for Clock Shift Correction for Measurement-While-Drilling Measurements

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...

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Bibliographische Detailangaben
Hauptverfasser:	BROOKS ANDREW G, PINNELL MITCHELL G, CAIRNS PAUL GERARD, MCGINLEY PATRICK J, RANDALL ROBIN F, DAHL THOMAS G, DASHEVSKIY DMITRIY, HILL MARK ANDREW, MACPHERSON JOHN D, ROBNETT EDWARD W
Format:	Patent
Sprache:	eng
Schlagworte:	DETECTING MASSES OR OBJECTS EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY FIXED CONSTRUCTIONS GEOPHYSICS GRAVITATIONAL MEASUREMENTS MEASURING MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS PHYSICS TESTING TRANSMISSION
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Beschreibung
Zusammenfassung:	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.