Large structures indicated off Turkmenistan

04/24/2000
A proven (known) petroleum system has operated and is operating in the South Caspian basin linking Mio-Pliocene reservoirs with Oligo-Miocene and Miocene source rocks.Large structural traps are provided in a variety of forms. These include thrust-related structures, anticlines above shale diapirs and swells, and gravity-slide roll-overs associated with moving shale. A variety of DHIs have been identified in association with structures and possible stratigraphic trapping situations.The efficiency of the system can be attributed to late rapid sedimentation resulting in depression of isotherms inducing oil window conditions in deep source rocks, and excess pressure build up assisting late hy...
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