Sequence stratigraphy of the hith/upper arab formations offshore Abu dhabi, U.A.E

摘要

The Kimmeridgian Upper Arab zones A, B, and C, are prolific hydrocarbon bearing reservoirs in central and westem Offshore Abu Dhabi, (OAD). They were deposited in an arid climate which dominated the Arabian peninsula during Late Jurassic times. The Berriasian to Tithonian Hith Formation which overlies the Arab reservoirs constitutes the cap rock, which just to the east of central OAD gradually pinches out and forms a N-S feather edge. The Hith and Upper Arab zones A, B, and C form 450 to over 600 feet of massive to interbedded anhydrites with varying proportions of interbedded anhydrites with varying proportions of limestones and dolomites in central and western OAD. The Arab Formationin OAD is a major regressive unit which was deposited on a broad carbonate platform and prograded eastwards into an open marine shelf environment.