MINIMUM COST CASING DESIGN FOR VERTICAL AND DIRECTIONAL WELLS.

Document Type

Conference Proceeding

Publication Date

12-1-1985

Abstract

The potential of casing cost reduction is investigated by using an optimization technique. A simple recurrent computer procedure for the minimum-cost casing in vertical wells if derived. Application 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 loads calculations, then the minimum-cost casing string is selected. An anlaysis 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)

Society of Petroleum Engineers of AIME, (Paper) SPE

First Page

71

Last Page

85

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