Characterization of a Permian Deep-Water Sandstone
Shirley P. Dutton, Ph.D.
A depositional model of the unit was developed using data from Bell Canyon outcrops and subsurface data from East Ford and the adjacent Ford Geraldine unit. The Ramsey sandstones were deposited by turbidity currents in a basin-floor setting. The sandstones are interpreted as having been deposited in a channel-levee system that terminated in broad lobes; overbank splays filled topographically low interchannel areas. Porosity and permeability of the reservoir sandstones are controlled by calcite cement concentrated in layers from 2 to 16 inches thick. Injector wells located in splay sandstones apparently have poor communication with wells in channel sandstones, perhaps because communication is restricted through levee and channel-margin deposits. Modification of the alignment of injectors and producers may overcome the problem of apparently restricted communication between wells in splay and channel sandstones.
Bureau of Economic
Geology, The University of Texas at Austin, Austin, TX ; Telephone: (512)