Proceedings of the Korean Geotechical Society Conference (한국지반공학회:학술대회논문집)
- 2010.09a
- /
- Pages.790-799
- /
- 2010
Characteristics of Fracture System of the Upper Devonian Grosmont Formation, Alberta, Canada
캐나다 앨버타 상부 데본기 Grosmont층의 불연속면 구조 특성
-
Um, Jeong-Gi
(Dept. of Energy Resources Engineering, Pukyong National University) ;
- Kim, Min-Sung (Dept. of Energy Resources Engineering, Pukyong National University) ;
-
Choh, Suk-Joo
(Dept. of Earth and Environmental Sciences, Korea University)
- Published : 2010.09.09
Abstract
The Upper Devonian Grossmont Formation in Alberta, Canada reserves an estimated 50 billion cubic meters of bitumen and possess about 1/6 of the total bitumen resources in northern Alberta. However, unlike the overlying Athabasca oil sands, non conventional bitumen resources has not been developed as yet. The carbonate rocks of Grosmont Formation have been subject to various stages of diagenesis, including dolomatization and karstification with a strong effect on the distribution of porosity and permeability, which resulted in highly heterogeneous reservoirs. An extensive fracture logging and mapping was performed on total of six boreholes located in the study area to explore the characteristics of fracture geometry system and the subsurface structures of carbonates reservoir that holds bitumen. Fractal dimension was used as a measure of the statistical homogeneity of the fractured rock masses. The applicability of random Cantor dust, Dc, as a fractal parameter was examined systematically. The statistical homogeneity of fractured carbonates rock masses was investigated in the study area. The structural domains of the rock masses were delineated depthwise according to estimated Dc. The major fracture orientation was dominated by horizontal beddings having dip of
Keywords