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:
Jan. 24, 2012
Filed:
Feb. 06, 2009
Paul E. Pastusek, The Woodlands, TX (US);
Eric C. Sullivan, Houston, TX (US);
Daryl L. Pritchard, Shenandoah, TX (US);
Keith Glasgow, Willis, TX (US);
Tu Tien Trinh, Houston, TX (US);
Paul J. Lutes, The Woodlands, TX (US);
Paul E. Pastusek, The Woodlands, TX (US);
Eric C. Sullivan, Houston, TX (US);
Daryl L. Pritchard, Shenandoah, TX (US);
Keith Glasgow, Willis, TX (US);
Tu Tien Trinh, Houston, TX (US);
Paul J. Lutes, The Woodlands, TX (US);
Baker Hughes Incorporated, Houston, TX (US);
Abstract
Drill bits and methods for sampling sensor data associated with a state of a drill bit are disclosed. A drill bit for drilling a subterranean formation comprises a bit configured for receiving a data analysis module. The data analysis module comprises at least one sensor, a memory, and a processor. The processor is configured for executing computer instructions to filter information derived from sensor data in the drill bit to develop a piecewise polynomial curve of the sensor data. Filtering information derived from the sensor data comprises approximating a first derivative of a sensor data waveform, calculating a plurality of zeros for the first derivative of the sensor data waveform, and fitting a cubic polynomial between adjacent zeros calculated from the first derivative of the sensor data waveform resulting in a piecewise cubic polynomial.