Abstract: A method may include obtaining a request to determine automatically a depth of a formation top for a well in a geological region of interest. The method may include obtaining various well logs regarding the well and various wells in the geological region of interest. The method may include determining various depth values using the various well logs and a statistical interpolation method. The method may further include determining a final depth of the well using the various depth values and a searching method.

Abstract: A method including obtaining, by a computer processor, at least one key log in each of a set of training wells located, at least partially, within a hydrocarbon reservoir, identifying a target formation bounding surface in each of the set of training wells, and generating an initial depth surface for the target formation bounding surface from the target formation bounding surface in each of the set of training wells. The method further including, determining from the initial depth surface an initial depth estimate of the target formation bounding surface at a location of a current well, forming an objective function based, at least in part on a correlation between each key log in each of the set of training wells, and each corresponding key log in the current well, and optimizing the objective function by varying a depth shift between each of the set of training wells and the current well, to determine an optimum depth shift that produces an extremum of the objective function.

Abstract: A method for identifying the most representative well logs for the purpose of locating the top of a hydrocarbon-bearing formation employs the Pearson Correlation Coefficient by quantifying the consistency of historic previous top formation picks from a historic database of well data and corresponding logging data associated with each well in a defined oil field to provide Well Correlation Scores from which are derived Log Correlation Scores that are employed in accordance with the disclosure to provide a Top Correlation Score that is indicative of the relative reliability of the location of a top pick for a specific well in the defined oil field.

Abstract: A method may include obtaining a request to determine automatically a depth of a formation top for a well in a geological region of interest. The method may include obtaining various well logs regarding the well and various wells in the geological region of interest. The method may include determining various depth values using the various well logs and a statistical interpolation method. The method may further include determining a final depth of the well using the various depth values and a searching method.

Abstract: Provided are systems and methods for shifting core data to account for flaws that include segmenting core data into multiple contiguous core segments defined by breaking points and iteratively assessing and shifting the segments in sequence (from the deepest segment to the shallowest segment) to align the core data of the contiguous core segments with corresponding segments of log data. For each shift of an assessed segment by a given distance the shallower segments of core data are shifted by the given distance. The breaking points used to define contiguous core segments are identified based on image processing of an image of the core, including identification and comparison of Haralick textual feature parameters across different portions of the core image.