There are several methods for estimating the characteristics of source rock origins. One of the most costly and time-consuming methods is coring, plaque and cores analysis, which is time consuming and takes place in a limited number of wells. While most wells in a field have petrophysical logs based on which various parameters can be calculated. To overcome problems such as insufficient sample availability or high cost of laboratory analysis, several researchers have tried to find out how well the charts and organic matter are in different rocks, make quantitative and qualitative communication and for this purpose, the single well charts methods or effective compound have used several types of well charts. In this study, first describe and explain the conditions logs representing an organic-rich zone in the wells of Ahwaz oilfield. This study shows that the increase in the absolute magnitude of the difference between the two petrophysical parameters of CGR and SGR (Related to gamma rays and logs) in the depths attributed to Pabdeh Formation in Ahwaz oilfield, increasing the amount of Uranium in the formation and other petrophysical factors it increases the likelihood of the presence and amount of organic carbon in the formation and the stone originates from it. Then, use the actual data and charts in Ahwaz oilfield the accuracy and accuracy of this research can be done in the next step approved or reviewed, and then to examine the properties of other fields which sufficient data is not available from them and zones of organic matter that are again related to the depths of the Pabdeh Formation from this field to other fields, predicts.