--> Abstract: High Resolution 3D Seismic Data - Characterization of Morrow and Chester Sands in Haskell County, KS, Dennis Hedke, #90097 (2009)

Datapages, Inc.Print this page

High Resolution 3D Seismic Data - Characterization of Morrow and Chester Sands in Haskell County, KS

Dennis Hedke1 Richard J. Saenger Saenger2

1Hedke-Saenger Geoscience, Ltd , 2Hedke-Saenger Geoscience, Ltd

A considerable portion of the Hugoton Embayment of the Anadarko Basin contains hydrocarbon reservoirs in both Morrow-and Chester-aged rocks. It is a challenging exercise to predict the existence of reservoir materials, but advanced processing technologies applied in this survey provide evidence that characterization of these reservoirs is possible.

In this case, the top of uppermost Morrow sand occurs at an average depth of about 5290 ft, with sand thickness varying from zero to about 10 ft. A lower Morrow sand occurs at a depth of about 5350 ft, varying in thickness from zero to about 12 ft, while the average depth to Chester sand is about 5390 ft, with sand thickness varying from zero to a currently know maximum of about 25 ft. Conventional Vibroseis acquisition and processing yielded instantaneous frequency of about 55 Hz in the zones of interest. With the indicated interval from the top of Morrow sand to the top of Chester sand, synthetic modeling at this frequency places the top Upper Morrow sand in a weak peak amplitude event, the Lower Morrow sand in the ensuing trough, with the Chester sand embedded between the zero-crossing and peak of the subsequent peak amplitude event.

The data was acquired with a 2 ms sample rate, which yields a maximum theoretical Nyquist frequency of 250 Hz. Post stack processing was applied to enhance frequency and the resulting output approached 180 Hz. Synthetic modeling of this data then yielded discrete seismic stratigraphic packages for each of the zones of interest.

 

 

����������������������������������������������������������������������������������������������������������������� �������������������������������������������������������������������������������������������������������������������������������