Print this pageBrian W. Horn1, Russ A Schrooten1
(1) BP Exploration, Houston, TX
ABSTRACT: Development of the Echo Springs-Standard Draw Field Area: Using Technology to Enhance an Infill Program, Washakie Basin, Wyoming
The Echo Springs-Standard Draw field area or "sweetspot" has been the focus of exploitation and infill drilling for the past thirty years. Two phases of field development in the 1990's has increased the recovery efficiency and doubled the recoverable reserves from the landward-stepping reservoir horizons in the Almond Formation. Analysis of the second increased density drilling program demonstrates the utility of using technology to better characterize reservoir horizons within the Almond and estimate ultimate recoveries for the field. Combining detailed stratigraphic correlations with production data helps predict reservoir-quality in discontinuous Lower Almond sandstones and characterize the production profiles from the partially depleted, more continuous Echo Springs "bar." Integration of production data with reservoir models helps identify potentially undrained compartments in the Echo Springs interval as well as the contribution from other Upper Almond reservoir horizons to determine the range ultimate recoveries and recovery efficiency for the field. Analysis of the production data from Lower Almond reservoirs and commingled Upper and Lower Almond production is compared with modeled results in order to identify reserve growth and rate acceleration for infill wells with commingled production profiles. Model-based predictions of well performance from both the Lower and Upper Almond reservoir horizons are evaluated using the first 25 infill wells drilled in the field to characterize and estimate the performance of Almond reservoirs encountered in future infill wells.
AAPG Search and Discovery Article #90906©2001 AAPG Annual Convention, Denver, Colorado