Commissariat a L'energie Atomique

Veronique Barthes

Jacques Pocachard

Probe and process for measuring the remanent field (R) of a geological formation. A measurement is made of the magnetic field (B+I1+R1) along the axis of the geomagnetic field using a scalar magnetometer, followed by a vector measurement of the resultant magnetic field (Bp+Ip+R3) projected onto an invariable measurement axis. With the aid of the calculated values of the geomagnetic field (B) and the magnetic susceptibility field (I), it is in particular possible to calculate a component (S) of the remanent magnetic field (R) perpendicular to the geomagnetic field (B) and determine if the cancellation of the component of the field (R1) along this axis is due to a tilting of the magnetic pole in history or a local reduction of the remanent magnetization.

Growing community of inventors

St. Ismier, France

Veronique Barthes