TECHICAL Series MATHEMATICS • INFORMATICS • PHYSICS Series PHILOLOGY Series ECONOMIC SCIENCES Sereies EDUCATIONAL SCIENCES Series LAW AND SOCIAL SCIENCES Series
Hydrocarbons generating conditions on the Romanian Black Sea Shelf
(Universitatea Petrol-Gaze din Ploieşti, B-dul Bucureşti nr. 39, Ploieşti e-mail: ndinu_daniela@yahoo.com)
Vol LX • No. 4/2008
Daniela - Doina Neagu
Universitatea Petrol-Gaze din Ploieşti, B-dul Bucureşti nr. 39, Ploieşti
e-mail: ndinu_daniela@yahoo.com

 Keywords   rock surce, reservoir, traps, field

 Abstract
Studies concerning source rocks, for The Histria Basin oil fields established that the main generaring formation consists of shally oligocene deposits formed in a narrow euxinic basin enriched with significant amounts of organic matter of continental origin. Shales have a mainly sapropellic character and recived an important apport of plants enabeling them to generate important amounts of petroleum. HC (hydrocarbons content of the rock) has an averge value of 428,1 ppm, corresponding to a moderate hydrocarbons generating potential. Production tests shown a small content of sulphur (lesser than 0.12%) and high values, about 90%, of aromatic hydrocarbons saturation. These are speciffic to clays generated hydrocarbons. Petroleum has been locally generated, migration paths and distances being short.

 Rezumat
O primă evaluare a potenţialului de hidrocarburi pe şelful Mării Negre s-a realizat printr-un studiu elaborat în 1966, urmat de o suită de înregistrări complexe, seismice, geomagnetice, gravimetrice executate începând cu 1969. Studiile făcute pe rocile sursă pentru a stabili originile petrolului descoperit în zăcămintele din Bazinul Histria au arătat ca principala rocă sursă a tuturor zăcămintelor de hidrocarburi o constituie argilele depozitelor oligocene. Argilele, cu un caracter predominant sapropelic au primit şi un aport important de plante ce a permis generarea unor importante cantităţi de petrol. HC (cantitatea de hidrocarburi din rocă) are o valoare medie de 428,1 ppm, corespunzătoare un potenţial moderat de generare a hidrocarburilor. Probele de producţie au arătat un conţinut mic de sulf (mai puţin de 0,12%) şi valori ridicate, de aproximativ 90% saturare în hidrocarburi aromatice. caracteristice ţiţeiului generat de argile.



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