Abstract
Maximizing production is a common challenge that haunts the oil industry more today than it ever has. Shrinking reserves, environmental concerns and higher costs means we have to be more aggressive and efficient at draining our reservoirs. Completion studies have proven to be a valuable tool in maximizing production, however these studies often fail to take into account significant reservoir variables. To help understand the Ammo (Ammunition) Field Granite Wash in Washita County, Oklahoma, a study was performed looking at well variables to characterize the reservoir as well as determine the most efficient completion strategy. In this way, the reservoir variables were able to be quantified so offset productions and treatments could be compared with a high degree of confidence.
This paper examines a data set of wells using data compiled from core data, reservoir geology, drilling, completion, and production records maintained by the oil company. Stimulation records from the service company were then added as well as formation and calculated fracture properties. Drawdown production analysis techniques and non-Darcy flow effects were modeled to gauge frac half-lengths. Graphical techniques were then utilized with reservoir and treatment data to identify trends and anomalies.
