Produção Nacional
Casing-Cost Optimization for Complex Loading Situations
1996; Volume: 8; Issue: 01 Linguagem: Inglês
10.2118/28224-pa
ISSN2469-9675
AutoresJ. L. Roque, Eric Maidla, Richard Wagner,
Tópico(s)Drilling and Well Engineering
ResumoSummary Casing can be the single most expensive item of an oil well and, in many cases, can be designed in a cheaper way. We present the optimization procedure, method, and algorithm to minimize cost of a combination casing string. The algorithm is general and can be used with any commercial program, provided a few modifications are made for it to be used as a subroutine. To demonstrate its use, a commercial package (that can handle complex load calculations) is tested and the results confirm the effectiveness of the optimization procedure. We present two complete examples that include cost predictions for multiple combination casing strings by use of an extensive database of price and casing properties for the 9⅝-in. (with 27 different casing types) and the 7-in. casing (with 64 different types). With such a great casing database from which to select, it would be very hard to obtain the cheapest string by trial and error.
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