000			02381nab a2200193 4500
005			20260520000225.0
008			260224s2010 xxu
245	0	0	_aImpact of deltaic clinothems on reservoir performance _bDynamic studies of reservoir analogs from the Ferron Sandstone Member and Panther Tongue, Utah
260			_a _b _cfeb. 2010
270			_a17/06/2010 ; 17/06/2010
300			_a24 p. ; 139-162
520			_aTranscripción del resumen del autor. Subsurface reservoir models are typically limited by a lack of spatially accurate geometric data on bedform architecture and geometry. These factors are key controls on fluid flow. Outcrop analogs have long been used as a source of such data, but the capture of sufficiently precise outcrop data is a challenge. The study presented in this article used highly accurate geometrical digital geological outcrop data collected using ground-based laser scanning (light detection and ranging [LIDAR]) to build and test three-dimensional geocellular models of deltaic reservoir analogs. Two well-exposed ancient river-dominated delta systems, the Panther Tongue and the Ferron Sandstone Member, which both crop out in central Utah, were digitally mapped to precisely recreate their clinothem and clinoform geometries in geocellular reservoir modeling software. Such clinoforms are commonly draped with low-permeability mudstones that produce reservoir heterogeneity by subdividing the deltaic sand body into a series of dipping sandstone beds (clinothems). A key aspect of the modeling was to accurately capture these geometries and their effect on simulated fluid flow. Portions of the two deltaic systems were dynamically analyzed in a reservoir modeling software by simulating production in 41 models. These models tested a range of mudstone barrier continuities and permeabilities. Results quantify how the continuation of the heterogeneities governed the production rate and recovery factor in the Panther Tongue models. Mudstone permeability values were more important in the Ferron Sandstone models with steeper dipping and closer spaced clinothems, although production was still influenced by the continuation of the heterogeneities.
581			_a2
773	0		_tAAPG Bulletin _g94
942			_cARTICULO
100	1		_aEnge, Håvard D. _942978
100	1		_aHowell, John A. _942979
999			_c171189 _d171189