Automated Well Placement for Reservoir Evaluation

摘要

Automated systems and methods provide a systematic determination of suitable placements for well production zones that comply with specified placement constraints while accounting for information in the geocellular model. One computer-based well placement method embodiment includes: creating a three-dimensional geocellular model of a subsurface region including a reservoir; determining a map-view layout of well candidate zones that satisfies a set of layout parameters; deriving a three-dimensional arrangement of well production zones by testing each well candidate zone's potential vertical positions against a set of arrangement parameters; and storing the three-dimensional arrangement of well production zones on a non-transient information storage medium for use in evaluating production from the reservoir. Where the geocellular model has cell layers that conform to stratigraphic surfaces, the method may further include determining potential vertical positions for each well candidate zone by projecting the well candidate zones from the map-view layout onto layer-centered surfaces.

主权项

1. A computer-based well placement method that comprises:
creating, using a computer, a three-dimensional geocellular model of a subsurface region comprising a reservoir; determining, using a computer, a map-view layout of well candidate zones that satisfies a set of layout parameters; deriving, using a computer, a three-dimensional arrangement of well production zones by testing each well candidate zone's potential vertical positions against a set of arrangement parameters; and storing, using a computer, the three-dimensional arrangement of well production zones on a non-transient information storage medium for display or use in evaluating production from the reservoir.