Invention Grant
- Patent Title: Determining properties of earth formations using the electromagnetic coupling tensor
- Patent Title (中): 使用电磁耦合张量确定地层的性质
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Application No.: US11610653Application Date: 2006-12-14
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Publication No.: US07656160B2Publication Date: 2010-02-02
- Inventor: Emmanuel Legendre , Jean Seydoux , Reza Taherian , Jian Yang , Qiming Li
- Applicant: Emmanuel Legendre , Jean Seydoux , Reza Taherian , Jian Yang , Qiming Li
- Applicant Address: US TX Sugar Land
- Assignee: Schlumberger Technology Corporation
- Current Assignee: Schlumberger Technology Corporation
- Current Assignee Address: US TX Sugar Land
- Agent Darla Fonseca; Brigitte Echols; Dale Gaudier
- Main IPC: G01V3/18
- IPC: G01V3/18

Abstract:
A system and method to determine earth formation properties by positioning a logging tool within a wellbore in the earth formation, the logging tool having a tool rotation axis and a first, a second, and a third tilted transmitter coil, and a tilted receiver coil; rotating the logging tool about the tool rotation axis; energizing each transmitter coil; measuring a coupling signal between each transmitter coil and the receiver coil for a plurality of angles of rotation; determining a coupling tensor; and determining the earth formation properties using the coupling tensor.
Public/Granted literature
- US20080143336A1 Determining Properties of Earth Formations Using the Electromagnetic Coupling Tensor Public/Granted day:2008-06-19
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