This research highlights on new manner in study of petroleum reservoir , by integrated between a sedimentary study, which comprises micro slides from side, and geophysical well logging interpretation from another side, in Juriba & Transition zone formation, in ELmhash structure oil field , at Euphrates depression – west DER Azzor -Syria. A selection (5) wells in ELmhash structure is Mahash (17-18-11-4- 7).