Case Study: Reducing Cost and Increasing Drilling Efficiency with DSO/Upstream The industry downturn has spurred exploration and production compa- nies to find ways to reduce cost and increase efficiency. The legacy ap- proaches used for scheduling and analyzing drilling programs are a key place to look for opportunities to improve operational processes and re- duce cost, since drilling represents the majority of the dollars expended in monetizing reserves and is in the critical path to first-oil. Historically, many operators relied on an incohesive mix of application software to manage and analyze drilling schedules, including spreadsheets and general-purpose project management tools, together with extensive and tedious manual calculations. Recently, a large independent

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