Figura 4 - uploaded by Carlos Zavala
Content may be subject to copyright.
Proximity maps and facies prediction for sequences M1 to M3, Merecure Group.
Source publication
The Oligocene – Early Miocene Merecure Group is one of the main proliferous hydrocarbon-bearing unit in the Eastern Venezuelan Basin. It is composed of more than 1,000 feet of marine shelfal clastic deposits. These deposits bound Cretaceous and Paleogene strata and are in turn covered by a thick succession of fine grained deposits of the Miocene Ca...
Contexts in source publication
Context 1
... system as a whole. Lt index gives an indication of how lateral the core is located respect to the flow axis. Pt and Lt indexes were calculated in the whole study area and within a sequence stratigraphic framework. The mapping of genetic indexes allowed to determine source areas, predict facies distribution and reservoir quality in undrilled areas (Fig. 4). The analysis of genetic indexes in the Merecure Group revealed that the system could be more extended than previously considered with a main sediment source from cratonic areas located in the south and south-east. Index mapping suggest also a syntectonic accumulation during the Oligocene -Early Miocene, which have controlled the ...
Context 2
... properties. S1 facies have good porosities related to an original open packing, but permeability can be reduced according to the existence of fine grained materials in pore spaces. In a decreasing order of quality, the best facies are the B2, followed by B3, S1, S2, S3 and L. As B facies have the better properties, the facies maps of Fig. 4 can be used to predict the reservoir quality in undrilled ...
