Structural
Complexity in Structurally Simple Fractured Reservoir Analogs
Laubach, Stephen E.1,
Meghan E. Ward1 (1) The
Middle Triassic to Lower Jurassic La Boca
Formation sandstones, northeastern
Using diagenetic
and mechanical modeling we show how this heterogeneity likely arises. Results
imply that mechanical and chemical feedbacks resulting from cementation in
fractures and surrounding rock mass during and after fractures form influence
size and shape of fracture pore space. We show that diagenetic
history is a prime control on persistent porosity in fractures in basins and
thus their capacity to conduct fluid or to create a perceptible seismic
response. Even structurally simple reservoirs can have great fracture, and thus
fluid flow, heterogeneity.
AAPG Search and Discover Article #90063©2007 AAPG Annual Convention, Long Beach, California