Multi-station analysis of magnetic surveys

Details Multi-station analysis of magnetic surveys Multi-station analysis of magnetic surveys

E - Fixed Constructions

21

B

E21B 47/02 (2006.01) G01V 3/26 (2006.01)

Patent

CA 2752618

A multi-station gravity and magnetic survey is carried out in a borehole. The data from the survey are processed to estimate the inclination and azimuth of the borehole. The drill collar relative permeability is estimated, and the estimated drill collar permeability is then used to remove the effects of induced magnetization of the drill collar on the magnetic measurements.

L'invention porte sur un levé gravimétrique et magnétique à multiples stations qui est réalisé dans un trou de forage. Les données provenant du levé sont traitées pour estimer l'inclinaison et l'azimut du trou de forage. La perméabilité relative du collier de forage est estimée, et la perméabilité du collier de forage estimée est ensuite utilisée pour éliminer les effets de magnétisation induite du collier de forage sur les mesures magnétiques.

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