Relative Permeability in Coal

本项目旨在提供一个更好的煤相对渗透率模型，以提高煤层气储层的管理水平。煤的相对渗透率是储层模型的关键因素；然而，目前对煤系统相对渗透率的理解是错误的，基于相对渗透率的预测具有误导性。相对渗透率目前仅是常规气藏含水饱和度的函数。这种观点误解了煤和其他岩石作为气藏的物理差异，未能认识到煤相对渗透率的决定因素，并歪曲了流动系统。该项目旨在根据控制物理流动相互作用的原理，为煤相对渗透率提供基于现象学的理解和功能关系。

This project aims to deliver a better model for coal relative permeability to improve the management of coal seam gas reservoirs. Coal relative permeability is a key factor in reservoir models; however, current understanding of relative permeability is wrong for coal systems and predictions based on it are misleading. Relative permeability is currently carried over from conventional gas reservoirs as a function of the degree of water saturation only. This misunderstands the physical differences between coal and other rocks as gas reservoirs, fails to recognise the determinants of coal relative permeability, and misrepresents the flow system. This project seeks to provide a phenomenologically-based understanding and functional relationship for coal-relative permeability based on the principles than govern physical flow interactions.