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:
Mar. 29, 2016
Filed:
Jun. 20, 2012
Graham A. Mcelhinney, Inverurie, GB;
Leon Ceh, Calgary, CA;
Euan Forbes, Calgary, CA;
Kenneth Stenerson, St. Albert, CA;
Graham A. McElhinney, Inverurie, GB;
Leon Ceh, Calgary, CA;
Euan Forbes, Calgary, CA;
Kenneth Stenerson, St. Albert, CA;
Other;
Abstract
Methods for improving wellbore survey accuracy and placement are disclosed. The Earth's magnetic field may be measured at a magnetically clean surface location and correlated with a non-magnetic reference direction to obtain a direction of the Earth's field (e.g., a magnetic declination or a magnetic inclination). The direction of the Earth's magnetic field may in turn be processed in combination with magnetic measurements made in a subterranean borehole to obtain one or more survey parameters.