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Significant Reserve Additions from Oligocene Frio Formation Hackberry Sands Utilizing 3-D Seismic Data, Upper Texas and Louisiana Gulf Coast
Robert L. Zamboras
The Oligocene age Frio Formation Hackberry sands of the Hackberry Embayment represent a complex and elusive exploration target. 3-D seismic data evaluation along the headward erosional limits of the embayment provides a reconstructive framework of tectonic and sedimentation patterns which facilitate hydrocarbon exploration.
The 3-D seismic data along the Orange County, Texas portion of the Oligocene Hackberry trend indicate: 1) similarities of Hackberry structural and depositional setting to that of the underlying Eocene Yegua Formation; 2) four distinct cyclical sedimentation episodes associated with basin floor slump faulting; 3) the usefulness of seismic attributes as direct hydrocarbon indicators; and 4) the potential for significant oil and gas reserve additions in a mature trend.
The Hackberry Embayment represents a microcosm of the basin structural and depositional processes. Utilizing 3-D seismic data to lower risk and finding cost will renew interest in trends such as the Frio Formation Hackberry sands of the Upper Texas-Louisiana Gulf Coast.
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