Inventor
PATTERSON DOUGLAS J
US41 patents
⚠️ This page may combine multiple inventors who share the name “PATTERSON DOUGLAS J”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
BAKER HUGHES INC
22 patentsUS6930616B2Aug 16, 2005
Method and apparatus for LWD shear velocity measurement
BAKER HUGHES INC77 citations98
US6769497B2Aug 3, 2004
Use of axial accelerometer for estimation of instantaneous ROP downhole for LWD and wireline applications
BAKER HUGHES INC100 citations97
US7773454B2Aug 10, 2010
Method and apparatus for cement evaluation using multiple acoustic wave types
BAKER HUGHES INC25 citations92
US7681450B2Mar 23, 2010
Casing resonant radial flexural modes in cement bond evaluation
BAKER HUGHES INC24 citations92
US7492664B2Feb 17, 2009
Method for processing acoustic reflections in array data to image near-borehole geological structure
BAKER HUGHES INC23 citations92
US6909666B2Jun 21, 2005
Method and apparatus for generating acoustic signals for LWD shear velocity measurement
BAKER HUGHES INC53 citations92
US6985086B2Jan 10, 2006
Method and apparatus for LWD shear velocity measurement
BAKER HUGHES INC20 citations91
US6850168B2Feb 1, 2005
Method and apparatus for LWD shear velocity measurement
BAKER HUGHES INC44 citations91
US7311143B2Dec 25, 2007
Method and apparatus for generation of acoustic shear waves through casing using physical coupling of vibrating magnets
BAKER HUGHES INC17 citations87
US8379483B2Feb 19, 2013
Method and apparatus for determining radial shear velocity variation from dipole acoustic logging
BAKER HUGHES INC7 citations84
US8004932B2Aug 23, 2011
Identification of stress in formations using angles of fast and slow dipole waves in borehole acoustic logging
BAKER HUGHES INC8 citations84
US7970544B2Jun 28, 2011
Method and apparatus for characterizing and estimating permeability using LWD Stoneley-wave data
BAKER HUGHES INC14 citations84
US7639562B2Dec 29, 2009
Active noise cancellation through the use of magnetic coupling
BAKER HUGHES INC13 citations84
US7626886B2Dec 1, 2009
P-wave anisotropy determination using borehole measurements
BAKER HUGHES INC10 citations84
US10222501B2Mar 5, 2019
Televiewer image wood-grain reduction techniques
BAKER HUGHES INC8 citations83
US10436018B2Oct 8, 2019
Downhole electromagnetic acoustic transducer sensors
BAKER HUGHES INC7 citations80
US7672784B2Mar 2, 2010
Using statistics of a fitting function for data-driven dispersion slowness processing
BAKER HUGHES INC4 citations62
US7633834B2Dec 15, 2009
VSP pattern recognition in absolute time
BAKER HUGHES INC4 citations60
US8913461B2Dec 16, 2014
Televiewer image wood-grain reduction techniques
BAKER HUGHES INC3 citations59
US7646673B2Jan 12, 2010
Wave analysis using phase velocity processing
BAKER HUGHES INC3 citations57
US10302792B2May 28, 2019
Detection of high incident reflective boundaries using near-field shear waves
BAKER HUGHES INC1 citations53
US7911877B2Mar 22, 2011
Active noise cancellation through the use of magnetic coupling
BAKER HUGHES INC1 citations52
BAKER HUGHES A GE CO LLC
3 patentsUS10605944B2Mar 31, 2020
Formation acoustic property measurement with beam-angled transducer array
BAKER HUGHES A GE CO LLC4 citations69
US11378708B2Jul 5, 2022
Downhole fluid density and viscosity sensor based on ultrasonic plate waves
BAKER HUGHES A GE CO LLC0 citations58
US11066920B2Jul 20, 2021
Guided wave attenuation well logging excitation optimizer based on waveform modeling
BAKER HUGHES A GE CO LLC0 citations47