玛湖凹陷YB4井区百口泉组低饱和度油藏成因及勘探方向分析

doi:10.3969/j.issn.1006-6535.2023.02.006

特种油气藏 ›› 2023, Vol. 30 ›› Issue (2): 44-50.DOI: 10.3969/j.issn.1006-6535.2023.02.006

玛湖凹陷YB4井区百口泉组低饱和度油藏成因及勘探方向分析

王爱霞¹, 徐怀宝¹, 耿梅¹, 刘文锋¹, 周伯玉¹, 王燕娥¹, 董文波²

1.中国石油新疆油田分公司,新疆克拉玛依 834000;
2.长江大学油气资源与勘探技术教育部重点实验室,湖北武汉 430100

收稿日期:2022-03-11 修回日期:2022-12-26 出版日期:2023-04-25 发布日期:2023-05-29
作者简介:王爱霞(1985—),女,高级工程师,2008年毕业于中国石油大学(华东)资源勘查工程专业,2011年毕业于该校矿产普查与勘探专业,获硕士学位,现从事地质研究方面的工作。
基金资助:
中国石油前瞻性、基础性、战略性技术攻关研究课题“多类型储集体发育机制与储集能力定量评价技术研究”(2021DJ0402)

Analysis of the Genesis and Exploration Direction of Low-saturation Reservoirs in the Baikouquan Formation, Wellblock YB4, Mahu Sag

Wang Aixia¹, Xu Huaibao¹, Geng Mei¹, Liu Wenfeng¹, Zhou Boyu¹, Wang Yan'e¹, Dong Wenbo²

1. PetroChina Xinjiang Oilfield Company, Karamay, Xinjiang 834000, China;
2. Key Laboratory for Oil and Gas Resources and Exploration Technology (Yangtze University), Ministry of Education, Wuhan, Hubei 430100, China

Received:2022-03-11 Revised:2022-12-26 Online:2023-04-25 Published:2023-05-29

摘要/Abstract

摘要： 为了落实玛湖凹陷斜坡区YB4井区百口泉组低饱和度油藏的形成机制,为油气勘探工作奠定基础,在油藏地质特征研究的基础上,系统分析了百口泉组储层物性、构造特征、构造发育史、油源供应以及隔夹层发育特征对含油饱和度的影响,归纳总结了研究区有利勘探方向。研究表明:YB4井区百口泉组低饱和度油藏的形成原因主要包括储层物性差、构造平缓、油源不足、构造反转以及隔夹层发育等5个因素,前3个因素为主控因素,构造反转及隔夹层发育进一步加剧了百口泉组油藏含油饱和度的下降;油源不足为客观油藏地质背景,构造和储层是玛湖凹陷YB4井区油气聚集的两大主控因素,有利沉积相带和继承性发育的局部高点同时满足的区域,其油气充注程度相对较高,是下一步油气勘探工作的有利方向。研究成果对研究区勘探开发的深入具有一定指导意义。

关键词: 低饱和度油藏, 油藏成因, 百口泉组, 准噶尔盆地

Abstract: In order to clarify the formation mechanism of the low-saturation reservoir in the Baikouquan Formation, Wellblock YB4, Mahu Sag slope area to lay the foundation for oil and gas exploration, the influence of reservoir properties, tectonic characteristics, tectonic development history, oil source supply and barrier/interbed characteristics on the oil saturation of the Baikouquan Formation was systematically analyzed on the basis of the study of reservoir geological characteristics, and the favorable exploration directions in the study area were summarized. The study shows that The formation of the low-saturation reservoir of the Baikouquan Formation of Wellblock YB4 mainly includes such five factors as poor reservoir properties, gentle structure, insufficient oil source, structural inversion, and interbed/barrier development. The first three factors are the main control factors, and the structural inversion and interbed/barrier development further aggravate the reduction of oil saturation in the Baikouquan Formation reservoirs;the insufficient oil source is the objective reservoir geological background, and tectonics and reservoir are the two main control factors of oil and gas accumulation in the Wellblock YB4 of the Mahu Sag, and the area where the favorable sedimentary facies zone and the local high point of inherited development are satisfied at the same time has a relatively high oil and gas filling degree, which is a favorable direction for the further oil and gas exploration. The research results have certain guiding significance for the in-depth development of the study area.

Key words: low-saturation reservoirs, reservoir genesis, Baikouquan Formation, Junggar Basin

中图分类号:

TE122

王爱霞, 徐怀宝, 耿梅, 刘文锋, 周伯玉, 王燕娥, 董文波. 玛湖凹陷YB4井区百口泉组低饱和度油藏成因及勘探方向分析[J]. 特种油气藏, 2023, 30(2): 44-50.

Wang Aixia, Xu Huaibao, Geng Mei, Liu Wenfeng, Zhou Boyu, Wang Yan'e, Dong Wenbo. Analysis of the Genesis and Exploration Direction of Low-saturation Reservoirs in the Baikouquan Formation, Wellblock YB4, Mahu Sag[J]. Special Oil & Gas Reservoirs, 2023, 30(2): 44-50.

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玛湖凹陷YB4井区百口泉组低饱和度油藏成因及勘探方向分析

Analysis of the Genesis and Exploration Direction of Low-saturation Reservoirs in the Baikouquan Formation, Wellblock YB4, Mahu Sag

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