At the stage of conceptual design, when engineering decisions have maximum impact on the overall project economical results, one of the key issues is to determine optimal number of well pads with regard to well drilling and platform building costs. Well pads calculation method for various field development systems is presented that consider drilling unit deadweight, well design restrictions, wells collision risk minimization and surface topographical restrictions. Calculation algorithm uses well drilling and number of pads minimization function or technical and economical optimization approach that takes into account production wells potential and cost of units.
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