Well test information is critical for the prudent management of oil and gas reservoirs. Well testing is thus an integral part of the overall production and depletion strategy of a reservoir. The Alberta Energy Regulator (#AER) defines the minimum legal requirements for #welltesting which are considered essential for prudent reservoir management.
Reservoir management, i.e. good production practices, include determining pool delineations; reserves; recovery mechanisms; water drive or influx activity; enhanced, secondary, and tertiary recovery pressure maintenance schemes; and optimal depletion strategies. As such, annual pressure surveys are required on oil and gas pools as specified in the Annual Survey Schedule. Relative to gas or oil drilling spacing units (DSU’s), 25% of pool wells must be tested. Candidates can be new wells; observation or suspended wells; injection wells; or as a last resort producing wells. One good strategy for limiting deferred production revenue is to schedule annual surveys during plant turnaround.