Abstract: Systems and methods for generating synthetic borehole image logs include logging rate of penetration (ROP) data, resistivity data, and gamma ray data while drilling a borehole in a subsurface formation to generate logged data. The generating includes determining an effective dip angle of the subsurface formation along the borehole and generating a depth shift table based on the effective dip angle and a well deviation angle, the well deviation angle being between the borehole and a vertical reference. Datasets are generated based on the ROP data, resistivity data, and gamma ray data, the generated datasets having higher sampling rates than the logged data. Synthetic borehole images are generated based on the generated datasets and the depth shift table, and the synthetic borehole images are oriented with respect to a reference point of the borehole.

Abstract: Methods for identify zones within a carbonate reservoir with (a) high porosity and high resistivity or (b) low porosity and high resistivity as potential gas-producing zones may use both resistivity data and effective porosity data where the resistivity data is conditioned before integration with the effective porosity data. For example, a method may include conditioning deep resistivity data for a plurality of zones of a subterranean formation, thereby producing conditioned deep resistivity data; integrating the conditioned deep resistivity data with effective porosity data for the plurality of zones, thereby producing a flow index curve for each of the plurality of zones; and identifying one or more potential gas-producing zones from the plurality of zones based on the flow index curve.