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. 07, 2012
Filed:
Nov. 04, 2008
Don A. Hopmann, Alvin, TX (US);
Daniel M. Cousin, Humble, TX (US);
Levon H. Yeriazarian, Katy, TX (US);
Juan P. Franco, Houston, TX (US);
Ahmed J. Jasser, Houston, TX (US);
Priyesh Ranjan, Houston, TX (US);
Don A. Hopmann, Alvin, TX (US);
Daniel M. Cousin, Humble, TX (US);
Levon H. Yeriazarian, Katy, TX (US);
Juan P. Franco, Houston, TX (US);
Ahmed J. Jasser, Houston, TX (US);
Priyesh Ranjan, Houston, TX (US);
Baker Hughes Incorporated, Houston, TX (US);
Abstract
The position of a movable downhole component such as a sleeve in a choke valve is monitored and determined using an array of sensors, preferably Hall Effect sensors that measure the strength of a magnetic field from a magnet that travels with the sleeve. The sensors measure the field strength and output a voltage related to the strength of the field that is detected. A plurality of sensors, with readings, transmits signals to a microprocessor to compute the magnet position directly. The sensors are in the tool body and are not mechanically coupled to the sleeve. The longitudinal position of the sleeve is directly computed using less than all available sensors to facilitate the speed of transmission of data and computation of actual position using known mathematical techniques.