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- W2038673974 abstract "Abstract Overall productivity of perforated wells is influenced by a complex interaction of diverse factors, which include the length of the individual perforations, casing entrance hole diameter, perforation shot density, phase angle between the perforations, and the degree of damage inside and around the perforations. This paper presents a new wellbore inflow model that provides a more accurate means of quantifying the effects of these individual parameters on productivity and skin factor associated with perforated completions. With the introduction of API RP43 Section IV testing, in-situ perforating geometry is more accurately determined. To take advantage of this more complete perforation description, a new wellbore inflow model is developed. This model incorporates the cone-shaped perforation geometry with a tapered tip that has been observed in the laboratory for years. For the first time, the asymmetric, spiral distribution of perforations around a wellbore is modeled using a full 3- dimensional finite element model with over 30,000 elements in each perforation layer instead of the 2-dimensional and quasi 3-dimensional models used in the past. Productivity results from the new 3D model are compared with previous models to demonstrate the improvements to the inflow predictions. The effect of reservoir anisotropy on perforation design is also studied over a wide range of shot densities and phasing. Results that highlight the effect of reservoir anisotropy are presented in this work. The new results from a parametric study are used to build a database, which is used for optimizing perforation completion design." @default.
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- W2038673974 date "2002-02-20" @default.
- W2038673974 modified "2023-09-23" @default.
- W2038673974 title "Advances in Well Completion Design: A New 3D Finite-Element Wellbore Inflow Model for Optimizing Performance of Perforated Completions" @default.
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- W2038673974 doi "https://doi.org/10.2118/73760-ms" @default.
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