AN EQUATION OF STATE COMPOSITIONAL MODEL

被引：206
作者：
COATS, KH
机构：
来源：
SOCIETY OF PETROLEUM ENGINEERS JOURNAL | 1980年 / 20卷 / 05期
关键词：
Equations of state - Natural gas deposits;
D O I：
10.2118/8284-PA
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
A description is given of an implicit, three-dimensional formulation for simulating compositional-type reservoir problems. The model treats three-phase flow in Cartesian (x-y-z) or cylindrical (r- THETA -z) geometries. Applicability ranges from depletion or cycling of volatile oil and gas condensate to miscible flooding operations involving either outright or multicontact-miscibility. The formulation uses an equation of state for phase equilibrium and property calculations. The equation of state provides consistency and smoothness as gas-and oil-phase compositions and properties converge near a critical point. This avoids computational problems near a critical point associated with use of different correlations for K values as opposed to phase densities.
引用
收藏
页码：363 / 376
页数：14
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