Assignee
HOHL ANDREAS
DE14 patents
Top patents by PatentIndex Score
US9976405B2May 22, 2018
Method to mitigate bit induced vibrations by intentionally modifying mode shapes of drill strings by mass or stiffness changes
HOHL ANDREAS9 citations79
US11448015B2Sep 20, 2022
Dampers for mitigation of downhole tool vibrations
HOHL ANDREAS3 citations72
US10822939B2Nov 3, 2020
Normalized status variables for vibration management of drill strings
HOHL ANDREAS2 citations72
US10746013B2Aug 18, 2020
Downhole test signals for identification of operational drilling parameters
HOHL ANDREAS5 citations72
US9435187B2Sep 6, 2016
Method to predict, illustrate, and select drilling parameters to avoid severe lateral vibrations
HOHL ANDREAS4 citations71
US11199242B2Dec 14, 2021
Bit support assembly incorporating damper for high frequency torsional oscillation
HOHL ANDREAS6 citations69
US11136834B2Oct 5, 2021
Dampers for mitigation of downhole tool vibrations
HOHL ANDREAS3 citations69
US10364663B2Jul 30, 2019
Downhole operational modal analysis
HOHL ANDREAS3 citations66
US11021945B2Jun 1, 2021
Method to mitigate bit induced vibrations by intentionally modifying mode shapes of drill strings by mass or stiffness changes
HOHL ANDREAS0 citations58
US11668179B2Jun 6, 2023
Drilling evaluation based on coupled torsional vibrations
HOHL ANDREAS0 citations57
US10982526B2Apr 20, 2021
Estimation of maximum load amplitudes in drilling systems independent of sensor position
HOHL ANDREAS0 citations51
US11598195B2Mar 7, 2023
Statistical approach to incorporate uncertainties of parameters in simulation results and stability analysis for earth drilling
HOHL ANDREAS0 citations49
US10830038B2Nov 10, 2020
Borehole communication using vibration frequency
HOHL ANDREAS0 citations48
US9000941B2Apr 7, 2015
Alternating frequency time domain approach to calculate the forced response of drill strings
HOHL ANDREAS0 citations39