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. 25, 2014
Filed:
Aug. 10, 2010
Applicants:
Trevor K. Pugh, Tomball, TX (US);
Patrick A. Kelleher, Conroe, TX (US);
Inventors:
Trevor K. Pugh, Tomball, TX (US);
Patrick A. Kelleher, Conroe, TX (US);
Assignee:
National Oilwell Varco, L.P., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 40/14 (2006.01);
U.S. Cl.
CPC ...
Abstract
Systems and techniques for non-contact measurement of coiled tubing motion are disclosed. In one embodiment, a system includes a laser source and a laser motion sensor. The laser source is configured to provide laser light that illuminates the coiled tubing as the tubing moves. The laser motion sensor is configured to collect and process laser speckle images and compute measurements of coiled tubing movement based on the laser speckle images.