Pack off indicator for a wellbore operation

A method comprising:

• determining, based on an accumulation of geological material in a wellbore, a pack off indicator indicating a likelihood of a downhole tool being immobile in the wellbore, wherein the accumulation of geological material in the wellbore comprises cuttings resulting from an action of the downhole tool positioned in the wellbore and settled cavings resulting from instability in the wellbore, and wherein determining the pack off indicator comprises:
• estimating the accumulation of geological material in the wellbore, the estimated accumulation comprising a respective estimated accumulation with respect to the cuttings and the settled cavings, wherein the estimated accumulation with respect to the settled cavings is outputted by a data-driven model trained using log data obtained from one or more logging tools;
• and
• dividing the estimated accumulation by a volume of a wellbore annulus defined by a first set of wellbore piping and a second set of wellbore piping positioned in the wellbore;
• and
• automatically adjusting a wellbore operation using the pack off indicator by controlling a flow of circulating fluid in response to the pack off indicator exceeding a predetermined threshold.

A non-transitory computer-readable medium comprising instructions that are executable by a processing device for causing the processing device to perform operations comprising:

• determining, based on an accumulation of geological material in a wellbore, a pack off indicator indicating a likelihood of a downhole tool being immobile in the wellbore, wherein the accumulation of geological material in the wellbore comprises cuttings resulting from an action of the downhole tool positioned in the wellbore and settled cavings resulting from instability in the wellbore, and wherein determining the pack off indicator comprises:
• estimating the accumulation of geological material in the wellbore, the estimated accumulation comprising a respective estimated accumulation with respect to the cuttings and the settled cavings, wherein the estimated accumulation with respect to the settled cavings is outputted by a data-driven model trained using log data obtained from one or more logging tools;
• and
• dividing the estimated accumulation by a volume of a wellbore annulus defined by a first set of wellbore piping and a second set of wellbore piping positioned in the wellbore;
• and
• automatically adjusting a wellbore operation using the pack off indicator by controlling a flow of circulating fluid in response to the pack off indicator exceeding a predetermined threshold.