三塘湖盆地马朗凹陷芦草沟组咸化湖盆页岩层系原油物性演化特征及其地质意义
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本文为中国石油天然气股份有限公司科技资助项目“吐哈盆地风险勘探领域和目标研究、工程技术攻关及现场试验”(编号:2023YQXNCS001- 09)的成果


Physical property evolution characteristics and geological significance of crude oil in saline lacustrine shale strata of the Lucaogou Formation in Malang Sag,Santanghu Basin
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  • 1)中国石油大学(北京)地球科学学院,北京,102249;2) 油气资源与工程全国重点实验室,中国石油大学(北京),北京,102249;3) 中国石油吐哈油田分公司勘探开发研究院,新疆哈密,839099    
  • 1)中国石油大学(北京)地球科学学院,北京,102249;2) 油气资源与工程全国重点实验室,中国石油大学(北京),北京,102249    
  • 1)中国石油大学(北京)地球科学学院,北京,102249;2) 油气资源与工程全国重点实验室,中国石油大学(北京),北京,102249    
  • 1)中国石油大学(北京)地球科学学院,北京,102249;2) 油气资源与工程全国重点实验室,中国石油大学(北京),北京,102249    
  • 1)中国石油大学(北京)地球科学学院,北京,102249;2) 油气资源与工程全国重点实验室,中国石油大学(北京),北京,102249    
  • 1)中国石油大学(北京)地球科学学院,北京,102249;2) 油气资源与工程全国重点实验室,中国石油大学(北京),北京,102249    
  • 3) 中国石油吐哈油田分公司勘探开发研究院,新疆哈密,839099    
  • 3) 中国石油吐哈油田分公司勘探开发研究院,新疆哈密,839099    
  • 1) College of Geosciences, China University of Petroleum, Beijing, 102249;2) National Key Laboratory of Petroleum Resources and Engineering, Beijing, 102249;3) PetroChina Tuha Oilfield Company, Hami, Xinjiang, 839009    
  • 1) College of Geosciences, China University of Petroleum, Beijing, 102249;2) National Key Laboratory of Petroleum Resources and Engineering, Beijing, 102249    
  • 1) College of Geosciences, China University of Petroleum, Beijing, 102249;2) National Key Laboratory of Petroleum Resources and Engineering, Beijing, 102249    
  • 1) College of Geosciences, China University of Petroleum, Beijing, 102249;2) National Key Laboratory of Petroleum Resources and Engineering, Beijing, 102249    
  • 1) College of Geosciences, China University of Petroleum, Beijing, 102249;2) National Key Laboratory of Petroleum Resources and Engineering, Beijing, 102249    
  • 1) College of Geosciences, China University of Petroleum, Beijing, 102249;2) National Key Laboratory of Petroleum Resources and Engineering, Beijing, 102249    
  • 3) PetroChina Tuha Oilfield Company, Hami, Xinjiang, 839009    
  • 3) PetroChina Tuha Oilfield Company, Hami, Xinjiang, 839009    
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    摘要:

    原油物性特征研究是源储一体型页岩油勘探及开发的重点,为明确新疆东北部三塘湖盆地马朗凹陷中二叠统芦草沟组页岩油藏原油物性的控制因素,笔者等基于烃源岩和原油地化特征分析、原油物性分析及薄片观察,对芦草沟组原油物性的影响因素进行了分析。结果表明:烃源岩热演化程度是影响芦草沟组原油物性的主要因素,原油物性随母质热演化程度增强先增加而后降低,且在生油高峰附近生成的液态烃密度和黏度最高。该研究有助于进一步深化马朗凹陷芦草沟组页岩油“甜点”分布规律认识,对下步勘探开发部署有重要的指导作用,同时对咸化湖盆背景下寻找相对轻质的页岩油具有借鉴意义。

    Abstract:

    The study of crude oil physical properties is a key focus for the exploration and development of source—reservoir integrated shale oil. Methods: In order to clarify the factors controlling the crude oil physical properties in the Middle Permian Lucaogou Formation of the Malang Sag, Santanghu Basin, this paper analyzes the influencing factors based on geochemical characteristics of source rocks and crude oil, crude oil physical property analysis, and thin section observations. Results: The thermal evolution degree of the source rocks is the main factor affecting the crude oil physical properties in the Lucaogou Formation. The physical properties of the crude oil increase at first and then decrease with the enhancement of thermal evolution, with the highest density and viscosity of liquid hydrocarbons generated near the oil generation peak. Conclusions: This study helps to further understand the distribution patterns of “sweet spots” in the Lucaogou Formation of the Malang Sag, provides important guidance for future exploration and development planning, and offers valuable insights for finding relatively light shale oil in saline lacustrine basins.

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徐雄飞,于淼,陈旋,高岗,赵思博,樊柯廷,张亦婷,程祎.2024.三塘湖盆地马朗凹陷芦草沟组咸化湖盆页岩层系原油物性演化特征及其地质意义[J].地质论评,70(6):2024060026,[DOI].
XU Xiongfei, YU Miao, CHEN Xuan, GAO Gang, ZHAO Sibo, FAN Keting, ZHANG Yiting, CHENG Yi.2024. Physical property evolution characteristics and geological significance of crude oil in saline lacustrine shale strata of the Lucaogou Formation in Malang Sag,Santanghu Basin[J]. Geological Review,70(6):2024060026.

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  • 收稿日期:2024-09-20
  • 最后修改日期:2024-12-03
  • 在线发布日期: 2024-12-19