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العلامات الاحيائية لنفط تكوين الزبير ومناشئه في مدينة البصرة جنوب العراق == Biomarkers of Zubair Formation Oil andits Sources in Basrah Region Southern Iraq
Author name:
هبة عادل ذيبان الحيدري
General topic:
Geology
Specific topic:
Geology
Degree:
Master
University:
University of Baghdad
Language:
English
University location:
Baghdad
First pages:
30T355 - p.pdf
Abstract:
In this thesis, Zubair Formation is studied for its lithological properties, oil accumulation, and source rocks potentiality by : One dimension petroleum - system models were developed to simulate burial - thermal history, source rock maturity and the timing and extent of petroleum generation; the generation of Zubair Formation oil began in the Tertiary and continued till present day. Modeled transformation ratios indicate that 53 - 75% of its generation potential has been reached. In contrast, younger source rocks are immature to early mature (<20% generation), whereas older source rocks are mature to over mature with 100% generation.The study of (14) thin section of core samples, showed that Zubair Formation has good reservoir properties of 19 - 28% porosity and 80 to 500 md permeability.Palynological analysis of (15) slides from core and cutting samples represent the organic matter of the shale in the Zubair Formation is mature, kerogen type II, III according Van Krevlen diagram.Gas chromatography - mass spectrometry devise of two oil samples represent the alkane peaks of carbon in oil, bulk composition of oil, the ratios of biomarkers, and non - biomarkers. These could indicate that source rocks for this oil are carbonate (Sulaiy - Yammama Formation) deposited in reduced marine environment and mature kerogen type II with algae origin with source rock age is Upper Jurassic - Lower Cretaceous.
