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Abstract

A gas play was established in marginal marine sandstones of the Upper Cretaceous Winters Formation in Solano Co. CA<br>during 1992. The discontinuous sands are stratigraphically trapped along the west-dipping basin paleoshelf. The entire<br>reservoir and seal interval has minor thickness changes, initially suggesting relatively uniform subparallel correlations<br>within the major stratigraphic packages. However, production results suggested that complex correlations and pinchouts<br>are present. A 1995 3-D seismic dataset suggested subtle amplitude variations within the reservoir interval, confined to a<br>one half-cycle seismic trough. In order to better image the play, a 3-D stratigraphic inversion was carried out for the<br>upper cretaceous sandstones. The inversion improved the correlations between reservoir and seal intervals.

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/content/papers/10.3997/2214-4609-pdb.215.sbgf151
1999-08-15
2024-03-29
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