Predicting and reducing vibrations during downhole drilling operations

A method comprising:

• receiving, by a processor, a plurality of sets of drilling parameter values associated with a drilling operation involving drilling a wellbore through a subterranean formation using a drill string;
• receiving, by the processor, a plurality of depth values associated with the plurality of sets of drilling parameter values, each depth value corresponding to a particular set of drilling parameter values in the plurality of sets of drilling parameter values;
• providing, by the processor, the plurality of sets of drilling parameter values as input to a drill string model to receive a plurality of critical speed predictions as output from the drill string model, each critical speed prediction being determined by the drill string model based on a respective set of drilling parameter values of the plurality of sets of drilling parameter values;
• generating, by the processor, a plurality of speed-depth mappings based on the plurality of critical speed predictions and the plurality of depth values, each speed-depth mapping including (i) a respective critical-speed prediction from among the plurality of critical speed predictions and (ii) a respective depth-value associated with the respective set of drilling parameter values used by the drill string model to determine the respective critical-speed prediction;
• and
• generating, by the processor, a graphical user interface including the plurality of speed-depth mappings for display on a display device, the plurality of speed-depth mappings in the graphical user interface being usable to reduce vibrations in the drill string at the plurality of depth values during the drilling operation.

A non-transitory computer-readable medium comprising program code that is executable by a processor for causing the processor to:

• receive a plurality of sets of drilling parameter values associated with a drilling operation involving drilling a wellbore through a subterranean formation using a drill string;
• receive a plurality of depth values associated with the plurality of sets of drilling parameter values, each depth value corresponding to a particular set of drilling parameter values in the plurality of sets of drilling parameter values;
• provide the plurality of sets of drilling parameter values as input to a drill string model to receive a plurality of critical speed predictions as output from the drill string model, each critical speed prediction being determined by the drill string model based on a respective set of drilling parameter values of the plurality of sets of drilling parameter values;
• generate a plurality of speed-depth mappings based on the plurality of critical speed predictions and the plurality of depth values, each speed-depth mapping including (i) a respective critical-speed prediction from among the plurality of critical speed predictions and (ii) a respective depth-value associated with the respective set of drilling parameter values used by the drill string model to determine the respective critical-speed prediction;
• and
• generate a graphical user interface including the plurality of speed-depth mappings for display on a display device, the plurality of speed-depth mappings in the graphical user interface being usable to manage vibrations in the drill string at the plurality of depth values during the drilling operation.