The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 06, 1989
Filed:
Jul. 14, 1988
Brian R Spies, McKinney, TX (US);
Atlantic Richfield Company, Los Angeles, CA (US);
Abstract
A method for reducing noise in electromagnetic geophysical exploration data simultaneously measures three orthogonal components of the ambient noise to produce noise records and simultaneously measures three orthogonal components of the decay of current induced into the earth to produce response records. In measuring the records, the receiving antenna is positioned near the electromagnetic center of the transmitting antenna, whereby the maximum component of the induced current decay signal is vertical or perpendicular to the strata in the earth. The impulse response of the earth is determined from the noise records. The noise portion of the vertical response record is determined from the impulse response and the non-vertical response records, whereby the noise portion is removed from the vertical response record.