A portion of recent field development efforts in the Hugoton
Embayment of western Kansas have focused on deeper Mississippian-age
sandstone reservoirs of the Chester series. Such efforts yielded
particular successes in the case of the South Eubank field, Haskell
County Kansas. Subsurface mapping and 3-D seismic information
led to over 30 new producers being drilled in this field. Reservoirs
are best developed in fine-grained, well-sorted Chester sandstones
filling a narrow incised paleo-valley system that runs northsouth
through the field. 3-D seismic data was required to accurately
delineate the paleo-valley system and locate specific drill sites.
Success at South Eubank suggests that other portions of the same
valley system might be similarly developed.