Interpretation of Depositional Environments Using Dipmeter Data in Upper Devonian of South-Central Pennsylvania--Case Study

Charles Johnson, Laura Feldman, Keith Mangini

A study of the Upper Devonian Elk section of south-central Pennsylvania used stratigraphic information from dipmeter logs to help define reservoir trends. Very little geologic control was available in the area of interest prior to the start of the drilling program. The dipmeter data provided stratigraphic information that allowed delineation of favorable trends for development, with a minimum of well control.

The results, presented as a case study, demonstrate the usefulness of integrating dipmeter data with all other available data to determine probable depositional environments in the study area. The dipmeter data provided information on paleocurrent direction, grain-size distribution, mineralogy, and postdepositional deformation, as well as highly accurate bed thickness.

Dipmeter information can be useful for choosing offset well locations on an individual well basis. Dipmeter information reaches its fullest potential when interpreted in a multiwell context, integrating all available data.

AAPG Search and Discovery Article #91041©1987 AAPG Eastern Section Meeting, Columbus, Ohio, October 7-10, 1987.