Abstract The Lunnan Low Uplift area in the Tarim Basin has undergone several phases of
hydrocarbon generation, accumulation and migration. Despite much work, oil source and
charge history remain quite controversial. We attempt to understand the charge history
through geochemical analyses on four palaeo-oils trapped in fluid inclusions (FI) and five
production oils from the Ordovician and Triassic reservoirs. Both FI and production oils
contain abundant n-alkanes with low to medium carbon numbers, consistent with results …

The petroleum charge history in the Lunnan Low Uplift (Tarim Basin, China) was
investigated by comparing the geochemical characteristics of fluid inclusion (FI) oils from
Ordovician and Triassic reservoirs with crude oils from stratigraphically different reservoirs.
Quantitative Grain Fluorescence (QGF) and Total Scanning Fluorescence (TSF) were used
to screen the reservoir samples so as to identify suitable samples for Molecular Composition
of Inclusion (MCI) analysis. All of the samples contain C30n-propylcholestanes, diagnostic of …