Andreas Hohl

PROBABILISTIC DETECTION OF DRILLING SCENARIOS

UTILIZING DYNAMICS DATA AND TRANSFER FUNCTION FOR FORMATION EVALUATION

Estimation of maximum load amplitudes in drilling systems using multiple independent measurements

Shock-based damping systems and mechanisms for vibration damping in downhole applications

Drilling evaluation based on coupled torsional vibrations

Optimized placement of vibration damper tools through mode-shape tuning

Bit support assembly incorporating damper for high frequency torsional oscillation

Dampers for mitigation of downhole tool vibrations

Borehole communication using vibration frequency

Estimation of maximum load amplitudes in drilling systems independent of sensor position

Dampers for mitigation of downhole tool vibrations

Normalized status variables for vibration management of drill strings

Automated spiraling detection

Method to mitigate bit induced vibrations by intentionally modifying mode shapes of drill strings by mass or stiffness changes

Vibrationless moineau system

Downhole operational modal analysis

Downhole test signals for identification of operational drilling parameters

Automated spiraling detection

Statistical approach to incorporate uncertainties of parameters in simulation results and stability analysis for earth drilling

DATA VISUALIZATION IN BOREHOLE SYSTEMS

System and method for defining permissible borehole curvature

Method to mitigate bit induced vibrations by intentionally modifying mode shapes of drill strings by mass or stiffness changes

Method to predict, illustrate, and select drilling parameters to avoid severe lateral vibrations

Alternating frequency time domain approach to calculate the forced response of drill strings

Method for influencing, damping, or suppressing mechanical vibrations occurring during operation in a turbomachine blade, a turbomachine blade useful for carrying out the method, and a piezoelectric damping element