Abstract: Incorporating pseudo-surface pick locations in seismic velocity models. At least some of the illustrative embodiments are methods including: refining a seismic velocity model by correlating a predicted log to a measured log; creating a pseudo-surface pick location in a modeled subsurface horizon based on the correlating; modifying at least a portion of a seismic velocity model based on the pseudo-surface pick location; recalculating the modeled subsurface horizon based on the seismic velocity model, thereby creating a modified surface; and plotting the modified surface on a display device of a computer system.

Abstract: Incorporating pseudo-surface pick locations in seismic velocity models. At least some of the illustrative embodiments are methods including: refining a seismic velocity model by correlating a predicted log to a measured log; creating a pseudo-surface pick location in a modeled subsurface horizon based on the correlating; modifying at least a portion of a seismic velocity model based on the pseudo-surface pick location; recalculating the modeled subsurface horizon based on the seismic velocity model, thereby creating a modified surface; and plotting the modified surface on a display device of a computer system.

Abstract: Correlating a measured and predicted log. At least some illustrative embodiments are methods including: plotting values of the measured log with respect to an ordinate axis and an abscissa axis, and the plotting in a first pane; plotting values of the predicted log with respect to the ordinate axis and the abscissa axis; selecting an inflection point of the predicted log; shifting horizontal position of the inflection point relative to the measured log responsive to the pointing device; changing dip of at least one modeled surface in a structural model based the relative location of the inflection point; recalculating the predicted log based on the change in dip, the recalculating creates a modified predicted log; and then plotting the modified predicted log. In some cases, the method may also include adding a fixed X, Y, Z point in the at least one modeled surface based on location of the inflection point.

Abstract: Correlating a measured and predicted log. At least some illustrative embodiments are methods including: plotting values of the measured log with respect to an ordinate axis and an abscissa axis, and the plotting in a first pane; plotting values of the predicted log with respect to the ordinate axis and the abscissa axis; selecting an inflection point of the predicted log; shifting horizontal position of the inflection point relative to the measured log respnsive to the pointing device; changing dip of at least one modeled surface in a structural model based the relative location of the inflection point; recalculating the predicted log based on the change in dip, the recalculating creates a modified predicted log; and then plotting the modified predicted log. In some cases, the method may also include adding a fixed X, Y, Z point in the at least one modeled surface based on location of the inflection point.