Diagenetic
effect on petrophysical nature of Cenomanian and Albian rocks, Mersa Matruh well, north
Western Desert, Egypt
Mohamed A. Ragab
Earth Sciences Dept., National Research Center, Egypt |
Petrographic and petrophysical methods are
applied to 24 selected Albian and Cenomanian rock core samples at different depths from
Mersa Matroh well - 1. The core samples of calcareous sandstone, dolostone and limestone
are affected by diagenesis, cementation, compaction, corrosion, and overgrowth. The
results indicate that the effective porosities are of secondary origin.
Values of electrical resistivity of the dolostone samples are the highest. This is due to
that the dolostone has low effective porosity, mounce potential and high density. The
majority of the Albian and Cenomanian limestone rocks are of a good reservoir quality
(high effective porosity and permeability).
|
|