银根-额济纳旗盆地拐子湖凹陷白垩系油源对比分析

王萍; 向连格; 姜海健; 陈清堂; 史大海; 陈强路; 王杰; 徐良发

doi:10.11781/sysydz201903427

银根-额济纳旗盆地拐子湖凹陷白垩系油源对比分析

doi: 10.11781/sysydz201903427

1. 中国石化石油勘探开发研究院无锡石油地质研究所, 江苏无锡 214126;
2. 宁夏回族自治区地质调查院, 银川 750021;
3. 中国石化中原油田分公司, 河南濮阳 457000

基金项目:

国家科技重大专项（2017ZX05005001）和国家自然科学基金（41872122）联合资助。

详细信息

作者简介:
王萍(1984-),女,硕士,工程师,从事油气地球化学研究。E-mail:wp2010.syky@sinopec.com。

中图分类号: TE122.1
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出版历程
- 收稿日期: 2018-08-15
- 修回日期: 2019-03-18
- 刊出日期: 2019-05-28

Cretaceous oil-source correlation in Guaizihu Sag, Yin'gen-E'ji'naqi Basin

1. Wuxi Research Institute of Petroleum Geology, SINOPEC, Wuxi, Jiangsu 214126, China;
2. Geological Survey Institute of Ningxia Hui Autonomous Region, Yinchuan, Ningxia 750021, China;
3. Zhongyuan Oil Field Branch Company, SINOPEC, Puyang, Henan 457000, China

摘要

摘要: 银根-额济纳旗盆地拐子湖凹陷X井白垩系巴音戈壁组二段发现的高产油流展示了该低勘探盆地的光明前景。目前对原油的来源尚没有统一的认识，为了有效预测油气藏和明确勘探方向，开展了油源对比研究。对X井苏红图组一段油砂、巴音戈壁组二段原油及苏红图组二段、巴音戈壁组二段、巴音戈壁组一段泥岩开展的族组分含量、生物标志化合物及碳同位素组成等研究表明，油砂、原油与巴音戈壁组一段烃源岩各方面地化特征最为接近，生标上均具有高C₃₀重排藿烷、高伽马蜡烷含量、低Pr/Ph值、高成熟度的特征，反映出X井苏红图组一段油砂和巴音戈壁组二段原油同源，均与巴音戈壁组一段烃源岩具有良好的亲缘关系。
- 生物标志化合物 /
- 油源对比 /
- 巴音戈壁组 /
- 苏红图组 /
- 白垩系 /
- 拐子湖凹陷 /
- 银额盆地
Abstract: Recently, high oil product was gained in the second member of the Cretaceous Bayingebi Formation (K₁b₂) in the well X in the Guaizihu Sag of Yin'gen-E'ji'naqi Basin, which revealed a bright exploration prospect. It has not obtained a quite unified understanding of petroleum source, so some research were made on the oil-source correlation,which will be helpful for the prediction of hydrocarbon reservoir and the selection of exploration direction. The analyses of composition, biomarker and carbon isotope were made with oil sand samples from the first member of Suhongtu Formation (K₁s₁), crude oil samples from the second member of Bayingebi Formation, and mudstone samples from the second member of Suhongtu Formation (K₁s₂) as well as and the second and first members of Bayingebi Formation. The geochemical features of oil sands, crude oil are close with K₁b₁ source rocks, showing high contents of C₃₀-diahopane and gammacerane, low Pr/Ph and high maturity. The good similarity reflects that K₁s₁ oil sands and K₁b₂oil are homologous, and their parent material are both from K₁b₁source rocks.
- biomarkers /
- oil-source correlation /
- Bayingebi Formation /
- Suhongtu Formation /
- Cretaceous /
- Guaizihu Sag /
- Yin'gen-E'ji'naqi Basin

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