Reservoir modeling and simulation study to plan a 2,000 well drilling program
Client : BP Americas, Inc
Location: Wamsutter Field, Green River Basin, Southwestern Wyoming
Objective: Evaluate an incremental gas recovery and production acceleration of down-spacing wells
The Wamsutter Field is located in the eastern part of the Green River Basin and has produced over 2
Trillion Cubic Feet (TCF) gas. BP, the field’s largest operator, has announced plans for a 2,000 well drilling program over the next 15 years that
should produce an additional 3 TCF.
BP contracted Knowledge Reservoir
for a reservoir modeling and
simulation study of a representative
area of the Wamsutter Field. The
work required creating an accurate
and detailed static and dynamic
model that can find the appropriate
scope of infill drilling by
down-spacing the wells from 160
acres to 80, 40, and 20 acre
spacing.
Knowledge Reservoir provided a realistic development plan for this field, which included:
• Understanding the facies distribution in the upper formation using the field-specific Petrophysical
model.
• Creating a Geocellular model using Object-Based Modeling (OBM) and Sequential Indicator
Simulation (SIS) modeling.
• Initializing a 2-phase gas-water dynamic model within Geo-Model to estimate OGIP and EUR.
• Conducting history matching of the production data to forecast production for 80, 40 and 20-acre
spacing.
Based on the well model and simulation result, Knowledge Reservoir estimated the incremental gas recovery in the Wamsutter Field for different well spacing. The team also developed appropriate methods to increase gas recovery rate per well. Knowledge Reservoir’s team demonstrated state-of- the-art simulation techniques to successfully complete this study for a complex continental basin.
