000			01872nab a2200217 4500
005			20260520002033.0
008			260224s2011 xxu
245	0	0	_aWettability determination of core samples through visual rock and fluid imaging during fluid injection
260			_a _b _cagos. 2011
270			_a11/04/2012 ; 11/04/2012
300			_a10 p. ; 476 - 485
520			_aTranscripción del resumen del autor Reservoir rock wettability is a key factor in oil recovery, as it controls the location, flow, and distribution of reservoir fluids. However, proper assessment of wettability is not an easy task and provides a number of challenges. Wettability is in parts determined by the history of the oil reservoir through mechanisms such as aging and fouling. Hence direct measurements on freshly exposed rock surfaces (e.g. on core plugs) are critical and might not represent the true wettability within the sample. We present a new and fast method for wettability determination based on the optical observation of injected fluids, which allows for wettability determination independent from the surface wettability state of the sample. Fluid behavior within the boundaries of the capillary regime is driven by capillary forces and thus by wettability, which is exploited for our method. We show that a combined optical white-light and fluorescence imaging technique provides excellent contrast for reliable observations. Based on this imaging technique, we successfully distinguish core samples with different internal wettability, independent of their surface state.
581			_a2
773	0		_tJournal of Petroleum Science & Engineering _g78
942			_cARTICULO
100	1		_aSchneider, Marc _952383
100	1		_aOsselin, Florian _952384
100	1		_aAndrews, Ballard _920383
100	1		_aRezgui, Fadhel _952385
999			_c187030 _d187030