Inventor

TRICHEL DONALD K

US2 patents

Patents

2 patents

US8453760B2Jun 4, 2013

Method and apparatus for controlling bottomhole temperature in deviated wells

FINCHER ROGER W9 citations81

US8267197B2Sep 18, 2012

Apparatus and methods for controlling bottomhole assembly temperature during a pause in drilling boreholes

FINCHER ROGER W7 citations81