Title : Estimate for which type of clay minerals that more effect on electrical parameters of fluvial reservoir sirte basin Libya using petro-typing approach Global Hydraulic Elements (GHEs).
Abstract:
The main objective of this study is to estimate which type of clay minerals that more effect on electrical Parameters of Reservoir such as resistivity, saturation exponent, cementation and wettability using Petro typing approach Global Hydraulic Elements (GHE) in Sirte Basin Libya. Ther are many types of clay minerals effect on reservoir such as Illite, kaolinite, Smectite and Chlorite. The major clay mineral that more effect on electrical parameters of reservoir is Chlorite because the chemical composition of Chlorite is containing iron, and the iron is conductive also the resistivity log in well logging does not response when we have chlorite that means can not to be identify the oil Water Contact (O.W.C) in the reservoir. One wells x1 have been selected from Sirte Basin Libya and seven core samples have been selected from various (GHEs) for detailed study. Petro typing (GHE) has been applied to identify the rock type distribution during the hole of reservoir, the special Core analysis properties have been used to identify the electrical parameters of reservoir also the petrography is very important to study the mineralogy and texture using Thin Section, SEM and XRD to identify the clay minerals during the hole of reservoir. The results showing excellent relation between electrical parameters. The type of clay minerals which was observed showing that the Global Hydraulic Elements GHE-2 and GHE-5 which are containing Chlorite is more effect on resistivity parameters such as saturation exponent, cementation, wettability and water saturation comparing with the other GHE’s.
Key Words: GHE, Clay Minerals, Chlorite, XRD, Petro typing, Reservoir.