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:
Dec. 17, 2013
Filed:
Oct. 22, 2007
Richard Damon Goodman Roberts, Southampton, GB;
Mark Volanthen, Fareham, GB;
Richard Damon Goodman Roberts, Southampton, GB;
Mark Volanthen, Fareham, GB;
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
A curvature sensing devicecomprising, a first fiber Bragg grating (FBG) strain sensor, a second FBG strain sensor, a flexible piece comprising two end piecesjoined by a tubular mid-section. The devicefurther comprisescontact rollersprovided on the internal surfaces of the end pieces, which maintain the end piecestangential to a pipe around which the deviceis located. The FBG strain sensorsare embedded within the mid-sectionand are arranged in two generally orthogonal planes, so that the curvature is measured in two dimensions. This enables the deviceto detect both the magnitude and direction of bending/curvature within a pipe. Bending in a pipe is transferred through the end piecesto the mid-section. The FBG sensorsmeasure bending of the mid-sectionfrom which bending of the pipe can be inferred.