Abstract: This study has been carried out in 20 km. east of Kahta-Adıyaman in the southern Anatolia region. The log dataof some wells in Tokaris field are investigated in order to achive the petrophysical properties under the software ofElan Plus (Schlumberger) using the Elan Plus software the well log data were interpreted to find reservoir levels. Asa result, the effective porosity, total porosity, shale volume, formation water saturation, movable and residual oilvolumes are found in the selected zone. Reservoir rock in the field is Karaboğaz formation and Mardin group carbonates. Production in theinvestigated field were done from Mardin group craked dolomites and limestones. The most important parameter thateffect reservuar quality and production is the permeability, Karaboğaz formation in Tokaris field shows 5-6 %porosity limestones. The field is usually not productive. Karababa-C which is the first 10-13 meters from the groundhas avarege porosity of 5.2-8.4 % limestones. It has a permeability of 0.01 md. which is very low. In the wells, theproduction can only be done by acidizing in these zones. Lower level of Karababa-C is made of dense limestones.Karababa-B is dense limestones and Karababa-A is shaly limestone. D erde re formation is made of limestones whichhas 1.4-5 % porosity from the first 15-28 meters. In some part we can find 10 % porosity. However, production canbe done only by acidizing. High permeability dolomites under limestones has 5.1-9 % porosity values. Because ofmany crack in the N-9 well porosity calculated as 16 %. The main production zone is in the Derde re formationdolomites.