Facies architecture

Fraser, C., Hill, P.R., Allard, M. 2005. Morphology and facies architecture of a falling sea level strandplain, Umiujaq, Hudson Bay, Canada. Sedimentology, 52, 141-160. 

Preferred fluid migration pathways are influenced by porosity and permeability, sedimentary sequences, facies architecture, and fractures. Porosity is a measure of pore space per unit volume of rock or sediment and can be divided into two types absolute porosity and effective porosity. Absolute porosity (n) is the total void space per unit volume and is defined as the percentage of the bulk volume that is not solid material. The equation for basic porosity is listed below ... 

The dominant types of cementation in the Zia Formation are pedogenic and phreatic. By definition, the spatial distribution of pedogenic carbonate is a function of the spatial distribution of palaeo-sols, which is a function of facies architecture and the length of time a particular surface was exposed. Most pedogenic carbonate in the Zia Formation is poorly developed, discontinuous and associated with finer-grained sediments in overbank fines (OF), crevasse splay (CS), and interdune (ID) facies associations (see Table 1 Fig. 6). Unlike discontin-... 

Ye et al. (1999) investigated outcrop samples of the Bluejacket Sandstone (Middle Peimsylvania) and correlated permeability anisotropy with the internal facies architecture meandering channel-fill facies shows strong permeability anisotropy compared with low anisotropy of braided channel-fill facies. 

Ye, L.S., Kerr, D., Kexian, Y., 1999. Facies architecture of the bluejacket sandsttaie in the Eufaula Lake Area, Oklahoma implications fra- reservoir characterization of the subsurface Bartlesville sandstone. In Schatzinger, R., Jradan, J. (Eds.), Reservoir Characterization-Recent Advances. AAPG Memoir. 71, American Associatitm of Petroleum Geologists, Tulsa OK/... 

Reservoir quality in the Chaunoy Formation is a function not just of depositional facies but also of localized cement distribution. Building a reservoir model using primary sandbody architecture alone is insufficient to correctly describe reservoir quality. 

Gibbons, K., Hellem, T., Kjemperud, A., Nio, S.D. Vebenstad, K. (1993) Sequence architecture, facies development and carbonate-cemented horizons in the Troll Field reservoir, offshore Norway. In Advances in Reservoir Geology (Ed. Ashton, M.). Spec. Publ. Geol. Soc. Lond., 69, 1-31. 

A three-dimensional seismic facies model could be built from supervised classification of seismic textures that captures the detailed structural framework of the reservoir and its complex architecture. 

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