A holistic or overall reservoir performance perspective isrnseldom used in the well planning/decision process. Thernindustry has a tendency to use broad generalizations alongrnwith uncertain interpolated reservoir information. Geologicrncomplexity tends to turn these generalizations andrnassumptions into less-than-acceptable potential prospectrnperformance predictors. In addition, the industry has arntendency to evaluate the reservoir and well drilling/completionrnprocess from a segmented or compartmentalized perspective.rnNumerous examples of this process exist. Petrophysicists,rnreservoir engineers, geologists, and drilling and completionrnengineers perform discrete evaluations based on their trainingrnand experiences in other reservoirs. Service companies arerngiven incentives to concentrate on delivery/service issues andrnproduct revenue. Consultants focus on developing specificrnniches or completing assigned tasks. Single wells are analyzedrnrather than trying to understand how the well fits within thernentire reservoir. Many operators grade themselves on theirrnability to drill and complete for less than industry standard.rnTheir focus is on well cost.rnWhat the industry needs is an understanding of how allrnthese issues fit into the big picture. The subject of this paper isrna summary of field evaluations performed to provide a holisticrnperspective. Results are presented that show how these effortsrnhave identified significant reservoir opportunities withrnresulting productivity and prospect economic improvement.rnThe evaluations presented in this paper are holistic inrnnature and were performed by a team of experts. Thesernevaluations consist of field data quantification, integration,rnenhancement, statistical and visual analysis, dimensionrnreduction, and development of a predictive artificial neuralrnnetwork (ANN) model. The ANN model is used to identifyrnpatterns and trends related to the geology and to reservoir andrnwell completion issues. Economic assessments of variousrncompletion/stimulation methods are presented. Engineeringrnevaluations are performed to resolve difficult interpretationrnissues and test conclusions. The resulting information wasrnthen used to drive changes in well completion/stimulationrnprocedures, which in some cases doubled the prospects value.rnThis paper will illustrate the benefits of taking a holisticrnapproach to field-wide problem solving.
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