July 3-8, 2016
In-situ combustion(ISC) is an enhanced oil recovery technique to exploit the unconventional crude oil resources with high recovery efficiency. Great amount of reaction heat is released in-place by burning the solid residue, so-called coke at the combustion front with the temperature higher than 400℃. Significant open ISC questions include the effect of coke formation on the pore structure and permeability. Coke deposition reduces the permeability and increases the permeability heterogeneities which will affect the oxygen transport in the formation, thereby influencing the oxygen participating reactions downstream. However, the existing empirical or semi-empirical relationships are still questionable to model the permeability change due to coke deposition. In the study, a high temperature and high pressure experimental apparatus was constructed to physically simulate the coke formation during the ISC processes.
Please download the full abstract below.
Qianghui Xu, Bin Ma, Hang Jiang, Ran Xu, Chao Huang, and Lin Shi, "Effects on the pore structure and permeability change by coke deposition during crude oil in-situ combustion" in "Sixth International Conference on Porous Media and Its Applications in Science, Engineering and Industry", ECI Symposium Series, (2016). https://dc.engconfintl.org/porous_media_vi/16