A Review of the Potential for CO2 Sequestration and Enhanced Gas Recovery in an Iranian Gas Condensate Reservoir From a Fluid Properties Point of View

作者：Poordad S^*; Forutan M Khakshur

来源：Petroleum Science and Technology, 2013, 31(20): 2157-2165.

DOI：10.1080/10916466.2010.549891

• CO2 sequestration
• enhanced gas recovery
• fluid properties
• gas condensate reservoir
• gravity segregation
• mobility ratio
• viscous fingering

The use of carbon dioxide (CO2) in enhanced oil recovery is a mature well-practiced technology; however, enhancing gas recovery (EGR) through the injection of CO2 is yet to be tested in the field. Depleted natural gas or gas condensate reservoirs are becoming important targets for CO2 injection. The study of injection of CO2 for EGR needs accurate fluid modeling of CO2 behavior in the gas reservoir conditions; especially the interaction of CO2 and reservoir fluid should be taken into account to obtain the best conditions for injection (Oldenburg and Benson, 2001). The purpose of this study is to evaluate the efficiency of CO2 injection in one of Iranian gas condensate reservoirs by modeling of reservoir fluid properties and different behaviors of its mixture with CO2 to have a proper estimation of injection condition and possibility of problems such as gravity segregation, viscous fingering, and liquid drop out at reservoir conditions. PVTi module of Eclipse software was used to perform modeling based on laboratory pressure-volume-temperature analysis of well number X of one of Iranian gas condensate reservoirs.

• 出版日期2013-10-18
• 单位中国石油大学（北京）