Active noise cancellation in electromagnetic telemetry

Systems and methods for noise cancellation in electromagnetic telemetry systems. A method for noise cancellation in electromagnetic telemetry may include: disposing an electromagnetic tool in a lateral section of a wellbore, wherein the electromagnetic tool comprises a transmitter; positioning a fir...

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Bibliographische Detailangaben
Hauptverfasser:	Wilson, Glenn Andrew, Samson, Etienne M
Format:	Patent
Sprache:	eng
Schlagworte:	DETECTING MASSES OR OBJECTS EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS GEOPHYSICS GRAVITATIONAL MEASUREMENTS MEASURING MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS PHYSICS TESTING
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Beschreibung
Zusammenfassung:	Systems and methods for noise cancellation in electromagnetic telemetry systems. A method for noise cancellation in electromagnetic telemetry may include: disposing an electromagnetic tool in a lateral section of a wellbore, wherein the electromagnetic tool comprises a transmitter; positioning a first counter electrode at a surface of the Earth; positioning a second counter electrode at the surface on an opposite side of the wellbore from the lateral section; transmitting a signal from the electromagnetic tool; measuring a first electromagnetic field property using the first counter electrode to obtain a received voltage; measuring a second electromagnetic field property using the second counter electrode to obtain a noise voltage; and removing noise from received voltage using the noise voltage.