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:
Aug. 21, 2007
Filed:
Jan. 31, 2006
Graham Mcelhinney, Inverurie, GB;
Graham McElhinney, Inverurie, GB;
PathFinder Energy Services, Inc., Houston, TX (US);
Abstract
A method for locating casing string joints using a measurement while drilling tool is disclosed. The method includes deploying an MWD tool in a wellbore and measuring the magnetic field along a length of the wellbore. Changes in the magnetic field along the length of the wellbore are evaluated to determine the location of at least one casing joint. Embodiments of this invention may be advantageously utilized, for example, in sidetracking operations to avoid milling through a casing joint. Use of this invention may obviate the need for a separate wireline run to locate the casing joints.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile