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Journal of Earth Sciences and Technology
EST 2023, 4(1), 31-48
Effect of Well Completion Configuration and Tubing Sizes on Well Performance
Authors
Bright Bariakpoa Kinate a,
Kingdom Onyemuche Choko a,
Utibe Aniefiok Eto a,
Edikan Bassey Iwah a
a) Department of Petroleum Engineering, Rivers State University, 500101Port Harcourt, Nigeria
ABSTRACT
Completion types and tubing sizes have been identified to play a major role in achieving an optimum production rate while utilizing the reservoir energy optimally. Adequate completion helps in optimizing production while minimizing pressure drop and predicting the longest flowing time. In this work, the effect of well completion configuration and tubing sizes on well performance was evaluated with a steady state simulator (PIPESIM®). A wellbore model was built and completed with both casing and liner completions with flow through the tubing and annulus. Sensitivity analysis was run for different tubing sizes for a given completion type and flow configuration on the well performance. Results showed that increase in tubing sizes from 2.441 inches to 2.992 inches for cased hole completion yielded 22.28% increase in production rate and 22.26% increase in production rate when the tubing sizes was increased from 2.441 inches to 2.992 inches for liner completion for tubing flow respectively. For tubing and annular flow, production increased from 4867.531STB/day to 4875.321STB/day for tubing sizes of 4.5 inches to 4.9 inches for liner completion and the same production rate of 4872.075STB/day with tubing sizes of 4.5 inches to 4.9 inches for open hole completion. This work has shown that changing the tubing sizes for optimization should only be considered for cased hole and liner completions with tubing flow configuration because both casing and liner completion methods with tubing and annular flow gave almost the same results as the tubing sizes were changed. Therefore, completion type with tubing sizes should be examined during design of a well to enhance productivity.
Completion Configuration; Tubing sizes; Production rate; Well performance; Cased hole; Liner Completion.