oa Reconstruction of Late Jurassic Oolite Shoal Paleoenvironments in a Giant Gas Field, Onshore United Arab Emirates

The Late Jurassic Arab Formation is being developed in a major gas accumulation located onshore southern UAE. The reservoir intervals form a large scale shallowing-upward cycle capped by the widespread Hith anhydrite topseal. The lower Arab Formation consists of wackestones to mudstones of mid ramp to basinal setting (Arab D Member) overlain by foreshoal and oolitic grainstone shoal deposit of the Arab C Member. The succeeding Upper Arab (A & B Members) comprises alternations of dolomitic limestone and anhydrite of restricted lagoon to backshoal and sabkha / salina origin.