Development of a geomechanical model for shale and oil sand interactions with steam in heat stimulation processes

与SAGD(蒸汽辅助重力排水)一样，在油砂地层中创建广泛的蒸汽室以融化沥青并通过重力排水生产石油的过程因油砂中夹层页岩的存在而受到严重影响。如果互层页岩受损，则注入的蒸汽可以有效地畅通无阻地进入地层。要有效地做到这一点，必须彻底了解这一过程。在尝试模拟这种热采油过程时，正确描述岩土材料在非等温条件下的热机械行为是至关重要的。本项目旨在开发一个本构(应力-应变)模型，该模型基于从一系列简单到高级的蒸汽相互作用的实验室实验测试建立的物理模型。该模型将针对材料的各种矿物学和微观结构特征而开发。

The process of creating an extensive steam chamber in oil sand formations to melt the bitumen and produce the oil by gravity drainage as in SAGD (Steam Assisted Gravity Drainage) is seriously compromised by the presence of interbedded shale in oil sand. If the interbedded shale is damaged, then the injected steam can propagate effectively into the formation unhindered. To do this effectively it is imperative to understand the process thoroughly. In trying to model such a thermal oil recovery process, the correct description of the thermo-mechanical behavior of geomaterials under non-isothermal conditions is of prime importance. This project aims to develop a constitutive (stress-strain) model based on the physics established from a series of simple to advanced lab experimental testing with steam interaction. The model will be developed for the various mineralogical and microstructural characteristics of the material.