--> Abstract: Hydrocarbon Charge History of the Jiyang Sub-Basin, East China as Revealed by from Integrated Fluid Inclusion, Spectroscopic and Geochemical Investigation and Modelling, by Xiongqi Pang, Keyu Liu, Sumei Li, and Shanwen Zhang; #90078 (2008)

Datapages, Inc.Print this page

Hydrocarbon Charge History of the Jiyang Sub-Basin, East China as Revealed by from Integrated Fluid Inclusion, Spectroscopic and Geochemical Investigation and Modelling

Xiongqi Pang1, Keyu Liu2, Sumei Li1, and Shanwen Zhang3
1China University of Petroleum, Changping, China
2CSIRO Petroleum, Kensington, WA, Australia
3Shengli Oilfield Ltd Co., Dongying, China

The Jiyang Sub-basin, which houses China’s second largest oilfield and has been in production for over 40 years, has a complicated charge history with multiple sources, hydrocarbon generations and charges. The petroleum system in the basin comprises Tertiary lacustrine source rocks, fluvial, deltaic and basin floor fan reservoir rocks and lacustrine fines as seals. The basin had undergone an initial rifting phase and a subsequent depression phase with numerous syn-depositional faults compartmentalising the reservoirs.

As part of a new exploration program on stratigraphic and lithological traps in the basin, we have recently instigated an integrated fluid inclusion, spectroscopic and geochemical investigation in the basin. Over 150 oil and core samples across the eastern part of the basin in the Dongying Depression were analysed using a suite of fluid inclusion, spectroscopic and geochemical techniques including fluid inclusion petrography, micro-thermometrics, geochemical analyses of oils and oil extracts, Quantitative Grain Fluorescence (QGF) and QGF on Extracts and Total Scanning Fluorescence on extracts and fluid inclusions. This has enabled us to construct a detailed spatial and temporal correlation of oil-oil, oil-rock, oil-inclusion and the reconstruction of the hydrocarbon charge history. Three hydrocarbon charges were identified within the basin with the major charge probably occurred around 5 million years ago as revealed by fluid inclusion and basin modelling results. Post hydrocarbon charge alteration and mixing are found to be common within the basin especially along the basin margins.

 

AAPG Search and Discover Article #90078©2008 AAPG Annual Convention, San Antonio, Texas