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. 29, 2013
Filed:
Nov. 30, 2010
Roel Van Os, Chatenay-Malabry, FR;
Dominique Dion, Plaisir, FR;
Philip Cheung, Montesson, FR;
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
Methods and devices for determining a rate of penetration and/or rate of rotation for a drilling assembly or logging tool while drilling or logging a wellbore are provided. The methods can include the steps of: at respective first and second time instant, acquiring and storing a first logging data frame using a first array of sensors and a second logging data frame using a second array of sensors where wherein the logging data relate to at least one property of a zone surrounding the wellbore and the second logging data frame overlaps at least partially the first logging data frame;comparing the first and second logging data frames;determining a relative change in depth and/or azimuth between the first and second logging data frames; andcalculating the rate of penetration and/or rate of rotation based on the relative change in depth and/or azimuth determined and a difference between the first and second time instants.