000			02085nab a2200205 4500
005			20260520000254.0
008			260224s2007 xxu
245	0	0	_aOverpressure generation and evolution in a compressional tectonic setting, the southern margin of Junggar Basin, northwestern China
260			_a _b _cago. 2007
270			_a07/06/2011 ; 07/06/2011
300			_a27 p. ; 1141-1166
520			_aTranscripción del resumen del autor. We present an interpretational framework for the analysis of a diverse set of geological structures that breach sealing sequences and allow fluids to flow vertically or subvertically across the seal. In so doing, they act as seal bypass systems (SBS). We define SBS as seismically resolvable geological features embedded within sealing sequences that promote cross-stratal fluid migration and allow fluids to bypass the pore network. If such bypass systems exist within a given seal sequence, then predictions of sealing capacity based exclusively on the flow properties (capillary entry pressure and hydraulic conductivity) of the bulk rock can potentially be negated by the capacity of the bypass system to breach the grain and pore network. We present a range of examples of SBS affecting contrasting types of sealing sequences using three-dimensional (3-D) seismic data. These examples show direct evidence of highly focused vertical or subvertical fluid flow from subsurface reservoirs up through the seal sequence, with leakage internally at higher levels or to the surface as seeps. We classify SBS into three main groups based on seismic interpretational criteria: (1) fault related, (2) intrusion related, and (3) pipe related. We show how each group exhibits different modes of behavior with different scaling relationships between flux and dimensions and different short- and long-term impacts on seal behavior.
581			_a8
773	0		_tAAPG Bulletin _g91
942			_cARTICULO
100	1		_aCartwright, Joe _926259
100	1		_aHuuse, Mads _949705
100	1		_aAplin, Andrew _950177
999			_c182413 _d182413