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Authors: Almond, Ken; Coull, Craig; Knowles, Peter; Smith, James; Smith, Michael V.; Mowbraw, Kyle
Source: Proceedings - SPE Annual Technical Conference and Exhibition, 2002, p 1615-1629
Conference: Proceedings of the 2002 SPE Annual Technical Conference and Exhibition, Sep 29-Oct 2 2002, San Antonio, TX, United States
Sponsor: SPE
Publisher: Society of Petroleum Engineers (SPE)

Keywords: Well Production, Petroleum Reservoirs, Well Completion, Fields, Turbulence, Packers, Flow Control, Well Drilling, Tubing, Pressure Effects.

Abstract: Big bore completions (i.e., those using 6-5/8-inches and larger production tubulars) are required for economical production and injection in prolific reservoirs. A variety of completion configurations exist, though only the most traditional schemes have been discussed. This paper will present the results of a study that analyzed and evaluated more than 350 large bore completions over a 20-year span to determine best practices. The study formed the basis for a new approach to well design that merges wellbore construction with the completion. The paper will discuss this approach, which includes a classification system to help operators choose the optimum design to match their completion objective. This paper will begin by reviewing the big monobore concept, discuss various enabling technologies and their opportunity to increase production while reducing costs, review configuration choices with case histories and conclude with a case history that illustrates how the big monobore concept is evolving in the world's largest gas field.