Oil-gas geological features and its exploration potential in South Turgay Basin , Kazakhstan
Online published: 2007-09-15
South Turgay Basin is an important oil-bearing basin in central south Kazakhstan, which is a rift basin of Mesozoic. The struct ure character is grabens separating horsts. Aryskum Trough in the south is the main depression and oil kitchen , including four NW-SE direction grabens from west to east. The oil fields found are located in the arches and slopes. The main genetic unit is Jurassic-Cretaceous series , and several regional unconformities exist through the sediments. Lower-Middle Jurassic mudstones are mainly source rocks, the principal reservoirs are the clastics of the Middle-Upper Jurassic and the Lower Cretaceous Formation, and early Cretaceous mudstone is regional seal. Although during more than 20 years exploration course, most large-size reserves have been found , there are many exploration potential fields. Except for the structure traps, the stratigraphic traps of Jurassic-Cretaceous Formations at the graben flanks and the basement weathered crust of Paleozoic are the future exploration directions.
LI Jingming , LI Dongxu , YANG Dong , MA Shuopeng . Oil-gas geological features and its exploration potential in South Turgay Basin , Kazakhstan[J]. Lithologic Reservoirs, 2007 , 19(3) : 48 -53 . DOI: 10.3969/j.issn.1673-8926.2007.03.009
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