SOUZA, F. M.; http://lattes.cnpq.br/3106404832402935; SOUZA, Franklyn Macedo de.
Resumo:
The deformation bands when present in siliciclastic reservoirs may act as barriers or conduit
for the fluid flow in the reservoir. Because of this, they must have their known petrophysical
parameters and geomechanical serving initial conditions input to the modeling and simulation
of fluid flow in reservoirs analogs. This work was developed in Rio do Peixe Basin and the
main objective is characterize the influence of deformation bands on the properties that
govern the fluid flow in sedimentary rocks affected by these structures and identify their
behavior when subjected to reservoir conditions. To achieve this purpose, we used the
collection of plugs for petrophysical analysis, conducting scanlines sections on pre-defined
profiles along the floor and the wall of the outcrop, as well as conducting geomechanical
profiles. The analysis of scanlines concluded that the higher frequency deformation bands are
concentrated in the main body, reaching 16 deformation bands. The geomechanical analysis
concluded that the conglomeratic facies without deformation bands has a higher resistance
value as compared with the facies with deformation bands. The thickness of the deformation
bands acts directly on the resistance values, which bands with thicknesses greater than 2 cm
are less resistant when compared with thinner bands. The petrophysical analysis showed that
increased porosity results in higher permeability values. However, the set N-S is increased
porosity leading to lower permeability values. The computer simulation concluded that the set
NE showed greater retention of oil and the set N-S greater water retention.