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Title: Evaluation of flow characteristics of perforations including nonlinear effects using finite-element method

This study presents results of finite element modelling of steady-state flow in perforated natural completions. Use of a carefully chosen mesh based on grid sensitivity analysis permits evaluation of flow with more precision than achieved by previous investigators. Also, for the first time, evaluation of flow characterstics of perforated completion is made taking into account the non-Darcy effect due to converging flow around the perforation. The results indicate: (1) confirmation of Locke's findings qualitatively but 5-10% overprediction by the nomograph (2) importance of angular phasing between adjacent perforations, (3) untenability of generally accepted severe permeability impairment in the compacted zone, and (4) significant reduction in productivity due to non-Darcy effect around the perforation for high-rate wells.
Authors:
Publication Date:
OSTI Identifier:
6640280
Report Number(s):
CONF-840495-
Journal ID: CODEN: SEAPA
Resource Type:
Conference
Resource Relation:
Journal Name: Soc. Pet. Eng. AIME, Pap.; (United States); Journal Volume: SPE 12781; Conference: Society of Petroleum Engineers California regional meeting, Long Beach, CA, USA, 11 Apr 1984
Research Org:
Flopetrol Johnson/Schlumberger
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; 03 NATURAL GAS; NATURAL GAS WELLS; PERFORATION; OIL WELLS; RESERVOIR FLUIDS; FLOW MODELS; ACCURACY; FINITE ELEMENT METHOD; FORECASTING; FORMATION DAMAGE; HYDRAULICS; MESH GENERATION; NOMOGRAMS; NONLINEAR PROBLEMS; PERMEABILITY; RESERVOIR ENGINEERING; SENSITIVITY ANALYSIS; STEADY FLOW; WELL COMPLETION; DIAGRAMS; ENGINEERING; FLUID FLOW; FLUID MECHANICS; FLUIDS; MATHEMATICAL MODELS; MECHANICS; NUMERICAL SOLUTION; WELLS 020300* -- Petroleum-- Drilling & Production; 030300 -- Natural Gas-- Drilling, Production, & Processing