Depositional and Field Development Model, Gray Sandstone (Jurassic), Cotton Valley Field, Northern Louisiana

The Gray Sandstone series (lower Buckner Formation, Upper Jurassic) in Cotton Valley field, northern Louisiana, consists of discrete sandstone lobes of limited lateral extent. The continuity of the Gray Sandstone across the area is due to the overlapping of discrete sandstone lenses. Net sand isopach maps show the Gray Sandstone to be a series of dip-parallel lobes clustered at the mouth of a feeder channel that bifurcates downdip. Individual lobes may be amalgamated with adjacent lobes and contain sedimentary features and ichnological fabrics most commonly associated with episodic storm deposits. Production from the Gray Sandstone series in Cotton Valley field comes from over a large, doubly plunging, salt-induced anticline. Production occurs both over the crest and on the flanks of the structure.