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:
Oct. 23, 2012
Filed:
Feb. 28, 2012
John Lionel Weston, Christchurch, GB;
Eric Wright, Aberdeenshire, GB;
Gary Uttecht, Houston, TX (US);
Roger Ekseth, Trondheim, NO;
John Lionel Weston, Christchurch, GB;
Eric Wright, Aberdeenshire, GB;
Gary Uttecht, Houston, TX (US);
Roger Ekseth, Trondheim, NO;
GYRODATA, Incorporated, Houston, TX (US);
Abstract
A method and an apparatus are provided for determining an orientation of a wellbore survey tool at a first position with respect to a reference direction. At least one first signal is indicative of an orientation of a directional reference system with respect to the reference direction. The directional reference system is positioned at a second position spaced from the first position. At least one second signal is indicative of a relative orientation of the wellbore survey tool with respect to the directional reference system. The orientation of the wellbore survey tool at the first position is determined in response at least in part to the at least one first signal and the at least one second signal.