Stability analysis of the moving interface in piston- and non-piston-like displacements

• 来源期刊: 力学学报（英文版）
• 年，卷（期）: 2008,（4）
• 页码范围: 381-385
• 页数: 5页
• 语种: 英文
• DOI: 10.1007/s10409-008-0161-2

摘要

From the macroscopic point of view, expressions involving reservoir and operational parameters are established for investigating the stability of moving interface in piston- and non-piston-like displacements. In the case of axisymmetrical piston-like displacement, the stability is related to the moving interface position and water to oil mobility ratio. The capillary effect on the stability of moving interface depends on whether or not the moving interface is already stable and correlates with the wettability of the reservoir rock. In the case of non-piston-like displacement, the stability of the front is governed by both the relative permeability and the mobility ratio.