Determining a full electromagnetic coupling tensor using multiple antennas

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United States of America Patent

PATENT NO 10768333
APP PUB NO 20170052273A1
SERIAL NO

15236682

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A downhole electromagnetic logging tool having two or more antenna groups spaced along a longitudinal axis of the logging tool, each antenna group having one antenna or multiple antennas proximally located or collocated, each antenna group having at least one tilted antenna, at least one antenna group having, in addition to the tilted antenna, at least one transverse or axial antenna, and any given pair of antenna groups comprising at least four antennas is disclosed. The logging tool is disposed in a wellbore penetrating a formation and, while rotating, measures a tool rotation angle, transmits an electromagnetic signal from one antenna group, and receives the electromagnetic signal with another antenna group. Elements of an electromagnetic coupling tensor are determined using the received electromagnetic signal and the measured tool rotation angle, and properties of the formation using one or more elements of the determined electromagnetic coupling tensor are inferred.

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Patent Owner(s)

Patent OwnerAddress
OLIDEN TECHNOLOGY LLC10450 CORPORATE DRIVE JIAN YANG SUGAR LAND TX 77478

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Yang, Jian Sugar Land, US 565 5899

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