Permanent seismic source

The system has a set of casing joints (1) forming a casing (10) and designed for passing a magnetic field, and an active part for generating seismic waves, where the active part is formed by active elements e.g. magnetostrictive material, arranged outside of one of the casing joints. A movable sourc...

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Bibliographische Detailangaben
1. Verfasser:	PATRICK MEYNIER
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:	The system has a set of casing joints (1) forming a casing (10) and designed for passing a magnetic field, and an active part for generating seismic waves, where the active part is formed by active elements e.g. magnetostrictive material, arranged outside of one of the casing joints. A movable source i.e. reel (8), inducing the magnetic field is disposed within the joint. The elements are constituted by bars (4) arranged on a perimeter of the joint, and arranged parallel to a casing axis (A). An independent claim is also included for a method for emitting seismic waves.