Identifying geological formation depth structure using well log data

A surface unit for performing a field operation of a field having a subterranean formation, the surface unit comprising:

• a computer comprising a computer processor and memory;
• a training well marker generator stored in the memory, executing on the computer processor, and configured to analyze a plurality of training well logs of a plurality of training wells in the field to generate a plurality of training well markers, wherein the plurality of training well markers identify where the plurality of training wells intercept a plurality of geologic interval boundaries in the subterranean formation;
• a training well marker propagator stored in the memory, executing on the computer processor, and configured to propagate, onto a target well log of a target well in the field, the plurality of training well markers to generate a plurality of target well markers, wherein the plurality of target well markers identify where the target well intercepts the plurality of geologic interval boundaries;
• and
• a repository for storing the plurality of training well logs, the target well log, the plurality of training well markers, and the plurality of target well markers,
• wherein the field operation is performed based at least on identifying where the target well intercepts the plurality of geologic interval boundaries.

A non-transitory computer readable medium storing instructions for performing a field operation of a field having a subterranean formation, the instructions when executed causing a computer processor to:

• analyze a plurality of training well logs of a plurality of training wells in the field to generate a plurality of training well markers, wherein the plurality of training well markers identify where the plurality of training wells intercept a plurality of geologic interval boundaries in the subterranean formation;
• propagate, onto a target well log of a target well in the field, the plurality of training well markers to generate a plurality of target well markers, wherein the plurality of target well markers identify where the target well intercepts the plurality of geologic interval boundaries;
• and
• perform the field operation based at least on identifying where the target well intercepts the plurality of geologic interval boundaries.