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Technical Happy Hour – Dapo Adejare – Production analysis and production forecasting in unconventional reservoirs using initial production data
March 21 @ 4:00 PM - 6:00 PM
Host: Society of Petroleum Engineers, Denver Section
Event: March 21st, 2023 Technical Happy Hour
Time: March 21st, 4-6 (HH begins at 4, Talk at 430, Social until 6)
Sponsor: Revo Testing Technologies
Study Group Category: Completion
Speaker: Dapo Adejare, Reservoir Engineering Technical Advisor, Revo Testing Technologies
Title: Production analysis and production forecasting in unconventional reservoirs using initial production data
Two examples from the SPE data repository will be used to illustrate a method for forecasting production in unconventional reservoirs using initial production data (first 1-2 months of production).
Analysis of hourly initial production data indicates a flow regime sequence of sub-radial flow (slope <0.4), followed by a 1st boundary (slope ~1) and then sublinear flow (slope > 0.5) on Rate Normalized Pressure vs. Material Balance Time plots. These flow regime sequences are applied in a workflow to determine the fracture half-length, permeability, and the number of fractures which are then used in a model to forecast production.
Additional examples will show how this workflow is applied to evaluate completion effectiveness.
This presentation illustrates the significance of high frequency/high quality initial production data. The reservoir transients that indicate sub-radial flow and a unit slope preceding sublinear flow are often masked by lower resolution daily data and hourly data with measurement errors.
Dapo Adejare is a Reservoir Engineering Technical Advisor with Revo Testing Technologies where he is helping to develop and apply new technologies for unconventional well performance evaluation. He holds a Master’s degree in Petroleum Engineering from Texas A&M University.