System and method for formation detection and evaluation

A method for identifying a planned marker while drilling a borehole through a formation for a first well comprising:

• obtaining, by a computer system, a plan containing a plurality of planned markers expected while drilling the borehole, wherein each of the planned markers corresponds to a baseline marker from an existing second well, wherein each of the baseline markers corresponds to a waveform from a first log file obtained from the second well and is associated with a waveform representation of the corresponding waveform, and wherein each of the planned markers is associated with an estimated true vertical depth (TVD) value and an uncertainty range;
• obtaining, by the computer system, a second log file corresponding to the borehole, wherein the second log file contains a plurality of waveforms representing formation information detected within the borehole and includes formation information to a TVD that includes at least a portion of the uncertainty region of a first planned marker of the plurality of planned markers;
• scanning, by the computer system, the second log file for the first planned marker based on the estimated TVD value of the first planned marker, the uncertainty range of the first planned marker, and the waveform representation of the baseline marker corresponding to the first planned marker;
• identifying, by the computer system, at least one match for the first planned marker;
• and
• reporting, by the computer system, the at least one match.

A system comprising:

• a network interface;
• a processor coupled to the network interface;
• a memory coupled to the processor and configured to store a plurality of instructions executable by the processor, the instructions including instructions for:
• obtaining, by a computer system, a plan containing a plurality of planned markers expected while drilling a borehole through a formation for a first well, wherein each of the planned markers corresponds to a baseline marker from an existing second well, wherein each of the baseline markers corresponds to a waveform from a first log file obtained from the second well and is associated with a waveform representation of the corresponding waveform, and wherein each of the planned markers is associated with an estimated true vertical depth (TVD) value and an uncertainty range;
• obtaining a second log file corresponding to the borehole, wherein the second log file contains a plurality of waveforms representing formation information detected within the borehole and includes formation information to a TVD that includes at least a portion of the uncertainty region of a first planned marker of the plurality of planned markers;
• scanning the second log file for the first planned marker based on the estimated TVD value of the first planned marker, the uncertainty range of the first planned marker, and the waveform representation of the baseline marker corresponding to the first planned marker;
• identifying at least one match for the first planned marker;
• and
• reporting the at least one match.