摘要
富含凝析水、元素硫的特殊类型气藏、凝析气藏,随着开采过程温度及压力的降低,凝析水和元素硫由烃类流体中析出,出现气-液-液-固四相共存现象。根据物质平衡方程组和热力学平衡方程组,建立了富含凝析水、元素硫的凝析油气体系相态研究方法及气-液-液-固四相相平衡计算模型。富含凝析水、元素硫的凝析油气体系相态研究将对提高气井采收率、完善气井生产动态分析和气藏工程设计等具有重要的指导作用。
In special gas or condensate gas reservoirs containing condensate water and elemental sulfur,the water and sulfur will precipitate from hydrocarbon flow as temperature and pressure drop during recovery process,showing coexisting phase of gas-liquid-liquid-solid.The study method for phase behavior of oil/gas system rich in condensate water and elemental sulfur and 4-phase equilibrium model of gas-liquid-liquid-solid have been established according to material balance and thermodynamic balance equations.This study is of significant importance to improving gas well recovery factor,production performance analysis and reservoir engineering design.
出处
《特种油气藏》
CAS
CSCD
2008年第2期28-31,共4页
Special Oil & Gas Reservoirs
基金
油气藏地质及开发工程国家重点实验室(西南石油大学)基金项目(PLN018)
关键词
凝析气藏
相平衡
相态
凝析水
硫
condensate gas reservoir
phase equilibrium
phase behavior
condensate water
elemental sulfur
