ON THE OIL SOURCE OF THE MABEI OILFIELD,NORTHWEST JUNGGAR BASIN

doi:10.3863/j.issn.1000-2634.2001.06.02

Abstract

Abstract:

The distribution patterns (ascending, descending, peaked, and valley-like) of C₂₀, C₂₁and C₂₃tricyclic diterpanes in oils from Mabei oilfield of Junggar basin are well related with other geochemical indices such as Pr/Ph, carbon isotope, Ts/Tm and thermal maturity. Mabei oil reservoirs are characterized by the spatial occurrence of ascending-patterned oils above descending patterned oils. Tricyclic diterpanes C₂₀/C₂₃which represents distribution patterns increase with testing oil productions and decrease with oil densities. The authors believe that ascending-patterned oils generated from Permian Fengcheng Formation was entrapped earlier than descending-patterned oils from Permian Jiamuhe Formation, and valley-patterned oils represent a mixture of the ascending-and descending-patterned oils.

Key words: Junggar basin, Mabei oilfield, oil source, tricyclic diterpanes, distribution pattern

CLC Number:

TE121.1

WANG Xu-long KANG Su-fang.. ON THE OIL SOURCE OF THE MABEI OILFIELD,NORTHWEST JUNGGAR BASIN[J]. 西南石油大学学报(自然科学版), 2001, 23(6): 6-6–8.

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URL: http://journal15.magtechjournal.com/Jwk_xnzk/EN/10.3863/j.issn.1000-2634.2001.06.02

http://journal15.magtechjournal.com/Jwk_xnzk/EN/Y2001/V23/I6/6

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ON THE OIL SOURCE OF THE MABEI OILFIELD,NORTHWEST JUNGGAR BASIN

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