Inventor
PATTERSON DOUGLAS
US14 patents
⚠️ This page may combine multiple inventors who share the name “PATTERSON DOUGLAS”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
BAKER HUGHES INC
8 patentsUS6614360B1Sep 2, 2003
Measurement-while-drilling acoustic system employing multiple, segmented transmitters and receivers
BAKER HUGHES INC132 citations97
US7525872B2Apr 28, 2009
Method and apparatus for cement bond evaluation using transversely polarized shear waves
BAKER HUGHES INC39 citations92
US7150317B2Dec 19, 2006
Use of electromagnetic acoustic transducers in downhole cement evaluation
BAKER HUGHES INC37 citations90
US6820716B2Nov 23, 2004
Acoustic isolator for well logging system
BAKER HUGHES INC17 citations89
US7663969B2Feb 16, 2010
Use of Lamb waves in cement bond logging
BAKER HUGHES INC17 citations80
US9273545B2Mar 1, 2016
Use of Lamb and SH attenuations to estimate cement Vp and Vs in cased borehole
BAKER HUGHES INC5 citations70
US10185052B2Jan 22, 2019
Constrained backscatter gamma ray casing and cement inspection tool
BAKER HUGHES INC4 citations69
US7650963B2Jan 26, 2010
Acoustic isolator for well logging system
BAKER HUGHES INC3 citations60