Stephen R Poe

US Patent:

8251160, Aug 28, 2012

Filed:

Apr 30, 2010

Appl. No.:

12/799762

Inventors:

Manoj Gopalan - Grand Prairie TX, US
Stephen B. Poe - Guthrie OK, US

Assignee:

Teledrift, Inc. - Oklahoma City OK

International Classification:

E21B 47/18
E21B 47/12
E21B 47/06

US Classification:

175 40, 175 48, 175 50, 367 84

Abstract:

A method and apparatus used to transmit information to the surface from a subsurface location during the process of drilling a bore hole is described. A novel pressure pulse generator or “pulser” is coupled to a sensor package, a controller 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. The assembled 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.

US Patent:

20070056771, Mar 15, 2007

Filed:

Sep 11, 2006

Appl. No.:

11/518648

Inventors:

Manoj Gopalan - Grand Prairie TX, US
Stephen Poe - Guthrie OK, US

International Classification:

E21B 47/00

US Classification:

175040000, 175045000

Abstract:

A method and apparatus used to transmit information to the surface from a subsurface location during the process of drilling a bore hole is described. A novel pressure pulse generator or “pulser” is coupled to a sensor package, a controller 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. The assembled 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.