| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5162597 | Organic Geochemistry | 2010 | 7 Pages |
Abstract
Examination of whole oils and isolated oil acidic fractions using Fourier transform infrared (FT-IR), negative-ion microelectrospray high-field Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR-MS) and gas chromatography-mass spectrometry (GC-MS) reveals significant differences in the functional groups, chemical classes and molecular weights of acidic components in crude oils derived from inland lacustrine source rocks in the Fula Sub-basin, Muglad Basin, Sudan. Correlation of the total acid number value (TAN) and bulk and molecular compositions with reservoir depth (temperature) indicates a strong influence of biodegradation on the origin of the high acidity in the oils and the possibility of distinguishing acidic compounds newly formed by way of in-reservoir biodegradation and those contributed directly from oil degrading bacteria.
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Authors
Maowen Li, Dingsheng Cheng, Xiaohua Pan, Lirong Dou, Dujie Hou, Quan Shi, Zhigang Wen, Youjun Tang, Sneh Achal, Marina Milovic, Luc Tremblay,