000			02045nab a2200193 4500
005			20260520001933.0
008			260224s2005 xxu
245	0	0	_aEvaluation of the controls on fracturing in reservoir rocks
260			_a _b _coct. 2005
270			_a23/05/2011 ; 23/05/2011
300			_a12 p. ; 385-396
520			_aTranscripción del resumen del autor. The style, geometry and distribution of fractures within reservoir rocks can be controlled by numerous factors, including: rock characteristics and diagenesis (lithology, sedimentary structures, bed thickness, mechanical stratigraphy, the mechanics of bedding planes); structural geology (tectonic setting, palaeostresses, subsidence and uplift history, proximity to faults, position in a fold, timing of structural events, mineralisation, the angle between bedding and fractures); and present-day factors, such as orientations of in situ stresses, fluid pressure, perturbation of in situ stresses and depth. The relative timing of events plays a crucial role in determining the geometry and distribution of fractures. For example, open fractures are commonly clustered around faults if the open fractures and faults formed at the same time, but clustering does not tend to occur if the open fractures pre-date or post-date the faults. Understanding these factors requires traditional geological skills, including the analysis of one-dimensional (line-sampling) data from core, borehole images and exposed analogues. This paper reviews the factors that control fractures within reservoir rocks and discusses methods to assess those controls. Examples are presented from Mesozoic limestones in southern England. It is shown that traditional geological skills are of vital importance in determining the rock characteristics, structural and present-day factors that control fractures.
581			_a4
773	0		_tJournal of Petroleum Geology _g28
942			_cARTICULO
100	1		_aPeacock, D.C.P. _949963
100	1		_aMann, A. _949964
999			_c181931 _d181931