05955884 is referenced by 88 patents and cites 4 patents.

A single well transient electromagnetic ("TEM") apparatus and method is disclosed. The invention includes a wireline logging tool adapted for disposition in a borehole drilled in earth formations that has mounted thereon an electromagnetic transmitter and electric field transmitter for applying electromagnetic energy to the formation that will maximize the radial depth of penetration of the energy into the formation. The logging tool further includes an electromagnetic receiver and electric field receiver for detecting the electric field and magnetic field components created in the formation by the TEM transmitter. The electromagnetic transmitter and receiver preferably comprise three-axis electromagnetic coils, and the electric field transmitter and receiver preferably comprise three-axis electric dipole antenna elements. The tool may employ an array of the TEM transmitters and TEM receivers spaced axially along the tool in the borehole.

Title
Method and apparatus for measuring transient electromagnetic and electrical energy components propagated in an earth formation
Application Number
290593
Publication Number
5955884
Application Date
June 26, 1997
Publication Date
September 21, 1999
Inventor
Leonty A Tabarovsky
Houston
TX, US
Kurt M Strack
Houston
TX, US
Christopher C Payton
Houston
TX, US
Agent
Darryl M Springs
Assignee
Western Atlas International
TX, US
IPC
G01V 3/28
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