中国石油大学学报（自然科学版）2016，Vol.40Issue(2)：43-51,9.DOI:10.3969/j.issn.1673-5005.2016.02.005
一柴西南尕斯地区不同期次油气充注对现今油藏的贡献
Estimation of relative contributions of different hydrocarbon charges to Gasi Oilfield accumulations, Southwestern Qaidam Basin
摘要
Abstract
The Gasi E3 1 Oilfield, Southwestern Qaidam Basin, is an important petroleum exploration region in the basin. The hydrocarbon charge history of the Gasi Oilfield in the Qaidam Basin, Western China was investigated using a suite of fluid in-clusion techniques, including fluid inclusion petrography, fluorescence spectroscopy, FT-IR spectroscopy and microthermom-etry. The study was facilitated by a detailed reservoir diagenesis investigation using optical microscopy, cathodeluminescence microscopy, SEM and XRD. The results show that the reservoir fluids evolved from alkali to acidic, and then alkalic. There were two episodes of oil charge in N1 ~ N2 2 , as reflected by three types of hydrocarbon inclusions, occurring around 28 Ma and 8 Ma, respectively. The current accumulations in the oilfield are of similar maturity and API gravity with the current oil accumulation derived from upward migration of palaeo-oil reservoirs in the depth.关键词
成岩序列/包裹体特征/光谱分析/油藏演化/尕斯E3 1 油藏/柴西南Key words
diagenetic sequence/fluid inclusions/spectrographic method/hydrocarbon charge history/Gasi E3 1 Oilfield/Southwestern Qaidam Basin分类
能源科技引用本文复制引用
桂丽黎,刘可禹,王喻雄,陈小磊,袁莉,孟庆洋,李秀丽..一柴西南尕斯地区不同期次油气充注对现今油藏的贡献[J].中国石油大学学报（自然科学版）,2016,40(2):43-51,9.基金项目
国家重大科技专项(2011ZX05003) （2011ZX05003）
中国石油天然气股份有限公司科学研究与技术开发项目(2011B-04,2011A-0207) （2011B-04,2011A-0207）
