MINIMUM-COST CASING DESIGN FOR VERTICAL AND DIRECTIONAL WELLS.

Document Type

Article

Publication Date

1-1-1987

Abstract

The potential of casing cost reduction is investigated by use of an optimization technique. A simple recurrent computer procedure for the minimum-cost casing in vertical wells is derived. Simulation analysis reveals 24% casing cost reduction, as well as several special applications. A new model of the minimum-cost casing design in directional wells is developed. Directional data are used for casing load calculations; then the minimum-cost casing string is selected. An analysis of the effect of directional-well geometry and the borehole drag on the minimum casing cost is performed. This paper and the optimization computer programs provide the casing designer with the complete cost-related information necessary to make the best decision.

Publication Source (Journal or Book title)

JPT, Journal of Petroleum Technology

First Page

1269

Last Page

1282

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