Westerngeco L.l.p.

Schlumberger Technology Corporation

Westerngreco L.l.c.

Andrea Zerilli

David Lee Alumbaugh

Tarek M Habashy

Leendert Combee

Martin N Howlid

Ugo Conti

Michael L Oristaglio

Kambiz A Safinya

H Frank Morrison

Guozhong Gao

Edward Nichols

James P Brady

Frank Morrison

Nestor Cuevas

Kevin Eyl

To perform marine electromagnetic (EM) surveying of a subterranean structure, a marine cable system is provided including a tow cable, a plurality of electromagnetic (EM) sources coupled to the tow cable, and a plurality of EM receivers coupled to the tow cable. The system is configured for deployment in a body of water to perform marine EM surveying of a subterranean structure.

Providing a tow cable having plural electromagnetic receivers and one or more electromagnetic sources

A system to perform a marine subterranean survey includes at least one vertical electromagnetic (EM) source and at least one EM receiver to measure a response of a subterranean structure that is responsive to EM signals produced by the vertical EM source. At least one tow cable is used to tow the EM source and EM receiver through a body of water.

Surveying using vertical electromagnetic sources that are towed along with survey receivers

A multi-component field source for surveying subsea formations includes at least two electrodes having a direction of motion, wherein the at least two electrodes are configured to produce an electric dipole in an orientation that is not parallel to both the direction of motion of the electrodes and the seafloor. A method for logging subsea formations includes transmitting electromagnetic energy into the subsea formations with at least two electrodes having a direction of motion and configured to produce an electric dipole in an orientation that is not parallel to both the direction of motion of the electrodes and the seafloor; and receiving signals that comprise electromagnetic energy that has traversed the subsea formations.

Multi-component field sources for subsea exploration

An electrode array for electric and magnetic measurements in a marine environment includes a first set of electrodes connected to a first cable, wherein the first set of electrodes and the first cable are configured to sink to a sea floor in the marine environment; a second set of electrodes connected to a second cable, wherein the second set of electrodes and the second cable are connected to the first cable and configured to float in the marine environment such that the second set of electrodes and the second cable maintain a distance from the sea floor when the first cable sits on the sea floor, and an instrument package connected to the first cable and the second cable, wherein the instrument package is configured to receive voltage signals measured by the first set of electrodes and the second set of electrodes.

Electrode array for marine electric and magnetic field measurements having first and second sets of electrodes connected to respective first and second cables

Growing community of inventors

Fiorenzuola, Italy

Andrea Zerilli