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:
Jul. 09, 2019
Filed:
Nov. 10, 2016
Allen R. Young, Houston, TX (US);
Brad Reeves, Edmond, OK (US);
Allen R. Young, Houston, TX (US);
Brad Reeves, Edmond, OK (US);
National Oilwell DHT, LP, Houston, TX (US);
Abstract
The present invention is a method and apparatus used to transmit information to the surface from a subsurface location during the process of drilling a bore hole comprising a pressure pulse generator or 'pulser' coupled to a sensor package, a controller, an active electromagnetic system for subsurface collision avoidance, and a battery power source all of which reside inside a short section of drill pipe close to the bit at the bottom of the bore hole being drilled wherein the apparatus or 'MWD Tool' can be commanded from the surface to make a measurement of desired parameters and transmit this information to the surface by encoding data in pressure pulses generated by a pulser valve that includes a stator and a rotor which may be open and closed to create pressure pulses.