... intragranular pore deposit ramp benthic foraminifera carbonate reservoir micropore shallow-water bioclast ultra-low permeability limestone reservoir s-formation bedding ultra-low permeability carbonate reservoir Introduction An ultra-low permeability carbonate reservoir normally has an average...

... and cemented natural fractures, drilling induced fractures and borehole breakout, fine-scale bedding, and other textural geological features such as vugs and stylolites. A variety of drilling-related borehole artifacts were also observed, including keyseats, stabilizer impressions in the borehole wall, tool...

... engineers wellbore integrity strength borehole shale instability microfracture failure mechanism Wellbore Design mechanism shale middle east interaction drilling operation drilling fluid prediction bedding shale sample lamination Introduction In the current scenario of petroleum...

... Abstract Most of unconventional shales are mechanically anisotropic and usually treated as transversely isotropic (TIV) media. Full anisotropy characterization of gas shale samples traditionally requires laboratory tests on several plugs cut along different orientations to the bedding...

... divided into four major Borehole Image Units on the basis of borehole image and openhole log response. The contacts between these units include bed boundaries and faults. Within these units, both electrically conductive and resistive stylolitic bed boundaries were identified. Faults and fractures...