A novel approach to assessing the anisotropic permeability parameters of fractured media

7th Global Conference on Materials Science and Engineering

工业技术（总论）;材料科学

Song, X.Y.^1^2 ; Liu, Y.T.^1^2 ; Jiang, X.E.^1^2 ; Ding, Z.P.^3 ; Xue, L.^1^2

State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing

102249, China^1

College of Petroleum Engineering, China University of Petroleum, Beijing

102249, China^2

CNOOC Research Center, Beijing

100028, China^3

关键词: Anisotropic permeability;    Co-ordinate transformation;    Fracture anisotropies;    Fracture permeability;    Naturally fractured reservoirs;    Permeability tensors;    Reservoir development;    Static characterization;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/474/1/012043/pdf
DOI  :  10.1088/1757-899X/474/1/012043

来源: IOP

【 摘 要 】

The fracture permeability in is very high and directional, which brings a series of problems for the petroleum reservoir development, such as earlier water breakthrough and low sweep efficiency. It is vital to accurately characterize fractures and acquire the parameters of fracture permeability to alleviate these issues, which are favorable for well pattern design and flow modeling. Permeability tensor is employed to comprehensively and expediently reflect the effect of fracture anisotropy on the fluid diversion. Based on information of fracture log and production, the complete permeability tensors of single group fractures and multiple group fractures are identified, where the coordinate transformation theory and tensor property are used. With the simplified form of the derived full permeability tensor, the anisotropic parameters, principal values and principal directions of permeability for the fractured reservoir, can then be calculated. The proposed method integrates the static characterization and percolation feature of fractures and can be applied merely into field practices of naturally fractured reservoir. This work is beneficial for the management of fractured reservoir and optimization of field development.