Big Sand Draw Field, Fremont County, Wyoming

Abstract

The Big Sand Draw field, in Fremont County, Wyoming, has produced approximately 20,000,000,000 cubic feet of gas from the upper Frontier formation (Cretaceous), with showings of oil in an edge well. Rock pressure is still more than 1,000 pounds per square inch. Although the field is not comparable in area with the Salt Creek field, it is of exceptional geological interest, since it has a proved closure of approximately 1,300 feet, and has several untested lower sand horizons, which are productive in other Rocky Mountain oil fields.