I am not sure, but historically there are plenty of oil seeps recorded in the Fertile Crescent. Having said that, please have a look at http://link.springer.com/article/10.1007/s12517-015-1871-y
I collected more than 30 samples throughout the area but my question was specific and related to restricted location, Shaqlawa. As a former resident of there I know the area. Any how thank you for your kind answer.