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Line 37: − − [[file:dipmeters_fig4.png|thumb|{{figure number|4}}Dip data expressed on a standard arrow plot.]]
→Thin bed resolution
==Thin bed resolution==
==Thin bed resolution==
[[file:dipmeters_fig3.png|thumb|300px|{{figure number|3}}Example of thin bed laminated sandstone-shale resolution by means of a dipmeter correlation curve.]]
In the detailed description of reservoirs, thin bed resolution by wireline techniques is a vital factor. For example, the evaluation of laminated shaly sands can be best accomplished by a sensitive delineation of sand and shale layers. Rather than running a tool designed exclusively for this purpose, money can be saved if the desired information can be derived from a logging tool routinely run for other purposes. Dipmeter surveys, particularly those with a calibrated resistivity scale, can be used for this purpose. Several descriptive properties can be derived from the dipmeter survey:
In the detailed description of reservoirs, thin bed resolution by wireline techniques is a vital factor. For example, the evaluation of laminated shaly sands can be best accomplished by a sensitive delineation of sand and shale layers. Rather than running a tool designed exclusively for this purpose, money can be saved if the desired information can be derived from a logging tool routinely run for other purposes. Dipmeter surveys, particularly those with a calibrated resistivity scale, can be used for this purpose. Several descriptive properties can be derived from the dipmeter survey:
In [[:file:dipmeters_fig3.png|Figure 3]], a raw dipmeter curve sharply distinguishes between sandstone and shale layers thinner than [[length::1 in.]] By establishing a cutoff line as shown, everything to the right can be identified as sand and everything to the left as shale. A reliable measurement of net sand thickness is thus provided, as well as the bulk volume fraction of shale in laminated form for input into laminated shaly sand saturation equations.
In [[:file:dipmeters_fig3.png|Figure 3]], a raw dipmeter curve sharply distinguishes between sandstone and shale layers thinner than [[length::1 in.]] By establishing a cutoff line as shown, everything to the right can be identified as sand and everything to the left as shale. A reliable measurement of net sand thickness is thus provided, as well as the bulk volume fraction of shale in laminated form for input into laminated shaly sand saturation equations.
==Dip computation==
==Dip computation==