The design of well completions is a complex process which requires the engineer to select, rationalize and integrate a large number of design elements. In the literature, it has been recognized that a systems approach to well completion design must be adopted if optimum and cost-efficient completions are to be generated. Historically, diagrammatical representations, such as logic diagrams, have been used to model and implement the systems approach for well completion design.

This paper discusses, as an alternative, a computational model of well completion design developed through an industry sponsored collaborative research project. The model formalizes the relationships and interaction between conventional computations for completion design, such as tubing hydraulics or stress analysis, and design knowledge gained through design and operating experience.

This model provides a comprehensive representation of the systems approach to well completion design, and serves as the basis for a computerized implementation. The implementation integrates both conventional and expert systems programming techniques. Program development and the advantages of using a computer design program to provide a rational and consistently optimum design capability are discussed.

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