Paper Title
Correlation of Clay, Grain Size, Petrophysical Parameters, and ATR-FTIR Spectra in Two Sandstone Reservoirs for Hydrocarbon Explorations, A Well Example, East Anatoliain Turkey

Abstract
In this study, samples taken from a well opened in East Anatolia regionwere studied. The objectives of this research are to reveal the presence of organic matter, analyze the petrophysical parameters (porosity, permeability),detect clay minerals and their effects on the two sandstone reservoirs, and determine the reservoir quality of the sandstone 1 and 2. The sandstone 1 consists of fine to medium grained, while the sandstone 2 consists of medium to coarse grainedbased on their grain size using petrographic analyses. Smectite, chlorite, mixed-layer illite–smectite, mixed-layer chlorite–smectite, illite, and kaoliniteclay minerals were detected, and theynegatively affected the reservoir characteristics ofsandstones. Reservoir quality was interpreted according to porosity and permeability values using well logs. The average shale-corrected porosities (effective) vary between 4 and 15%. Similarly, the average permeability values are less than 1 mD. In the fine- to medium-grained sandstones1 and the medium- to coarse-grained sandstones 2 samples, the FTIR studies showed CH3 and CH2 peaks and hence thepresence of hydrocarbons. Keywords - Hydrocarbon; FTIR; Permeability; Porosity; East Anatolia