A 3D Finite Element Code is used to model the near well bore region of a perforated well. The stress concentration around perforations is computed and related to the possibility of reservoir rock failure and hence to sand production risk. Results of a complete parametric study are used to show the influence of various controllable geometric features, such as perforation length and diameter, shot density, phasing, cementation quality, etc, on sand production risk. An optimization of the completion procedure is presented which maximizes IP expectations by lowering sand production risks, thus avoiding the use of sand control means when not strictly necessary from the production requirements.

You can access this article if you purchase or spend a download.