The Drill Well on Paper (DWOP) exercise is an accepted tool for use in planning an offshore well, and in post-drilling analysis to demonstrate real and potential efficiency gains when comparing latest generation drilling and floater designs. However, given accelerated advances in drilling systems and operational practices, does the DWOP methodology of strictly analyzing fixed line-item data adequately capture nonapparent flat time and enhance overall operational efficiencies? This paper explores areas where the traditional DWOP may not clearly reflect the efficiencies and HSE gains intrinsic of the latest generation drilling environment, and makes the case for transforming to more of a project management-like approach. For instance, efficiencies demonstrating reduced well delivery days would logically translate into a corresponding reduction in injuries/man-hour, but results of that accepted metric are not recorded in a post-well DWOP. Additionally, despite simultaneous rig operations, often denoted as off-line activities, the typical DWOP only looks at one operation, or line item, at a time. Thus, any efficiencies or bottlenecks in these parallel operations are often neither identified nor recorded in the DWOP.
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