A novel Kozeny-Carman-based permeability model for hydrate-bearing
sediments
- Zeyu Guo,
- Xingwei Ren,
- Mingyan Nong
Zeyu Guo
Faculty of Engineering;China University of Geosciences, Wuhan, 430074, China
Author ProfileMingyan Nong
Faculty of Engineering; China University of Geosciences, Wuhan, 430074, China
Author ProfileAbstract
The permeability of natural gas hydrate-bearing sediments is a crucial
parameter for gas production efficiency. A series of models for the
relation between the permeability and the hydrate saturation have been
proposed, unfortunately, most of these existing models are either too
complex or some of their parameters are not clear in physical meaning.
This defect seriously limits the practicability and applicability of the
existing models. To solve this problem, we proposed an innovative
permeability-hydrate saturation model that has only one parameter with
clear physical meaning and being readily determined. The proposed model
was derived on the basis of the Kozeny-Carman equation by extending the
concept of hydraulic radius from two-dimension to three-dimension. This
model is evaluated by using experimental data from existing literature,
and proved to have a satisfying performance. It could be used for
laboratory experiments, numerical simulation and field tests with the
premise of known total void ratio.