Focusing on case histories of recent horizontal wells in Oklahoma, this paper provides an overview of horizontal drilling activity in a region where, currently, horizontal drilling applications are still being defined. Consequently, the paper provides information — including successes and failures — of the various target applications, drilling and completion techniques, reservoir characteristics and production histories of these case history wells.

With particular focus on one of the first proposed multiwell horizontal drilling programs in the region, the paper provides specific comparisons of two different target intervals, as well as the actual drilling applications, drilling fluid types, survey techniques, and well designs. Results of the different drilling techniques are documented, including specific drilling assemblies used and production techniques employed. In addition, specific formations are documented according to their success as horizontal drilling applications.

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