Source Rock Evaluation of Taizhou Formation in Gaoyou Sag,Subei Basin
Received date: 2009-05-05
Revised date: 2009-06-01
Online published: 2009-08-10
The quality and potential of Taizhou Formation source rocks, Gaoyou sag, puzzled geologists. On the basis of closely\|spaced sampling analysis associated with former analysis data, the organic geochemical profile of Taizhou Formation was established. Source rocks were comprehensively evaluated, and the reserves of Taizhou Formation were predicted with genetic method. Shale at middle-upper section of Taizhou Formation is not much contributory for reservoirs, while shale and muddy limestone of six-sharp peak interval at the bottom of Taizhou Formation, with high organic carbon content (average 1.54%), sapropel type kerogen and low maturity-maturity, is a set of excellent source rocks. The reserves of the Gaoyou sag is 4 254×104 t, and the recoverable reserves is 1 293×104 t, which indicate that the Gaoyou sag has a good exploration prospect.
Key words： Source rock; Evaluation; Gaoyou sag; Taizhou Formation; Geochemical characteristics
LIU Beng-Lan . Source Rock Evaluation of Taizhou Formation in Gaoyou Sag,Subei Basin[J]. Natural Gas Geoscience, 2009 , 20(4) : 598 -602 . DOI: 10.11764/j.issn.1672-1926.2009.04.598
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