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

页码：363 / 376

页数：14