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 form converging flow around the perforation taken into account. The results indicate confirmation of Locke's results qualitatively but 5 to 10% overprediction by the nomograph, the importance of angular phasing between adjacent perforations, the uncertainty in generally accepted severe permeability impairment in the compacted zone, and a significant reduction in productivity owing to a non-Darcy effect around the perforation for high-rate gas wells.
- Research Organization:
- Schlumberger Perforating and Testing Center
- OSTI ID:
- 6776458
- Journal Information:
- SPE (Society of Petroleum Engineers) Product. Eng.; (United States), Vol. 2:2
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
03 NATURAL GAS
NATURAL GAS WELLS
FLOW MODELS
PERFORATION
STEADY FLOW
OIL WELLS
ACCURACY
DATA COVARIANCES
FINITE ELEMENT METHOD
INCIDENCE ANGLE
NOMOGRAMS
NONLINEAR PROBLEMS
PERMEABILITY
PRODUCTION
SENSITIVITY ANALYSIS
STEADY-STATE CONDITIONS
WELL COMPLETION
DIAGRAMS
FLUID FLOW
MATHEMATICAL MODELS
NUMERICAL SOLUTION
WELLS
020300* - Petroleum- Drilling & Production
030300 - Natural Gas- Drilling
Production
& Processing