Avtor/Urednik		Cerepi, Andrian; Belin, Sophie; Durand, Claudine; Brosse, Atienne
Naslov		Physical properties of argillaceous sandstone reservoirs from petrographic image analysis
Tip		članek
Vir		Image Anal Stereol
Vol. in št.		Letnik 20, št. Suppl 1
Leto izdaje		2001
Obseg		str. 451-6
Jezik		eng
Abstrakt		The Petrographic Image Analysis (PIA) is a rapid two-dimensional (2D) method to quantify pore and solid space in porous materials and particulary reservoir rocks. This paper aims to give a method to obtain physical properties of argillaceous sandstone from the PIA data applied to more than four orders of magnitude, from submicron to a millimeter scale. We used the back-scattered electrons grey-level images and integrated two scales: images with a 46x magnification which allowed us to characterize the macroporosity and the images with a 965x magnification which gives information about microporosity. This method enabled to measure classic petrophysic properties such as specific surface area, average pore diameter, distribution of pore size, macroporosity, microporosity, capillary pressure versus saturation, pore chamber - pore throat diameter ratio and electrical properties.
Deskriptorji		GEOLOGY PARTICLE SIZE IMAGE PROCESSING, COMPUTER-ASSISTED