Evaluation of Flow Characteristics of Perforations Including Nonlinear Effects with the Finite-Element Method
This study presents results of finite-element modeling of steady-state flow in perforated natural completions. Use of a mesh chosen carefully by grid sensitivity analysis permits evaluation of flow with more precision than that achieved by previous investigators. Also, for the first time, flow characteristics of perforated completions are evaluated with the non-Darcy effect resulting from converging flow around the perforation taken into account. The results indicate (1) confirmation of Locke's results qualitatively but 5 to 10% overprediction by the nomograph, (2) the importance of angular phasing between adjacent perforations, (3) the uncertainty in generally accepted severe permeability impairment in the compacted zone, and (4) a significant reduction in productivity owing to a non-Darcy effect around the perforation for high-rate gas wells.
S. M. Tariq, "Evaluation of Flow Characteristics of Perforations Including Nonlinear Effects with the Finite-Element Method," SPE Production Engineering, Society of Petroleum Engineers (SPE), Jan 1987.
The definitive version is available at https://doi.org/10.2118/12781-PA
Mining and Nuclear Engineering
Article - Journal
© 1987 Society of Petroleum Engineers (SPE), All rights reserved.