准噶尔盆地玛湖凹陷百口泉组地层圈闭成藏主控因素与定量评价

doi:10.3969/j.issn.1006-6535.2026.01.006

特种油气藏 ›› 2026, Vol. 33 ›› Issue (1): 52-59.DOI: 10.3969/j.issn.1006-6535.2026.01.006

准噶尔盆地玛湖凹陷百口泉组地层圈闭成藏主控因素与定量评价

李怡普^1,2, 万泽鑫³, 郑孟林⁴, 王晓龙^1,2, 鲍一遥^1,2, 安志渊⁴, 陈洪⁴, 肖七林^1,2

1.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;
2.长江大学非常规油气湖北省协同创新中心,湖北武汉 430100;
3.中国石油东方地球物理公司辽河物探分公司,辽宁盘锦 124000;
4.中国石油新疆油田分公司,新疆克拉玛依 834000

收稿日期:2025-01-07 修回日期:2025-09-12 出版日期:2026-02-25 发布日期:2026-06-22
通讯作者: 王晓龙(1985—),男,副教授,2008年毕业于长江大学勘查技术与工程专业,2014年毕业于中国地质大学(武汉)矿物普查与勘探专业,获博士学位,主要从事智能地球物理勘探方面的研究工作。
作者简介:李怡普(2000—),男,2022年毕业于河南师范大学计算机科学与技术专业,现为长江大学地质工程专业在读硕士研究生,主要从事油气地质勘探相关研究。
基金资助:
国家自然科学基金“超压碳酸盐岩弹性波速度研究”(41702135);“十四五”前瞻性基础性重大科技项目“地层不整合油气藏成藏主控因素与关键要素定量评价技术研究”(2021DJ0405)

Controlling factors and quantitative evaluation of stratigraphic-trap accumulation in the Baikouquan Formation, Mahu Sag,Junggar Basin

LI Yipu^1,2, WAN Zexin³, ZHENG Menglin⁴, WANG Xiaolong^1,2, BAO Yiyao^1,2, AN Zhiyuan⁴, CHEN Hong⁴, XIAO Qilin^1,2

1. Key Laboratory Exploration Technologies for Oil and Gas Resources, Ministry of Education, Yangtze University, Wuhan, Hubei 430100, China;
2. Hubei Provincial Collaborative Innovation Center for Unconventional Oil and Gas, Yangtze University, Wuhan, Hubei 430100, China;
3. Liaohe Geophysical Exploration Company, BGP Inc., CNPC, Panjin, Liaoning 124010, China;
4. Xinjiang Oilfield Company, PetroChina, Karamay, Xinjiang 834000, China

Received:2025-01-07 Revised:2025-09-12 Online:2026-02-25 Published:2026-06-22

摘要/Abstract

摘要： 针对准噶尔盆地玛湖凹陷百口泉组地层不整合油气藏成藏主控因素不明确等问题,运用石油地质学理论技术与概率论方法,系统分析该油气藏内幕结构,识别并量化了主要地质影响因素,总结出一套完善的定量评价技术。研究表明:在玛湖凹陷古地貌环境和特有的沉积体系作用下,生烃处形成碱性环境,藻类生物众多,烃源岩有机质含量丰富,转化率高,生烃潜力大,伴随着大范围分布的非均质致密砂岩,使玛湖凹陷具有稳定的烃源条件和良好的储集环境。同时,不整合-断裂的组合体系使得油气从烃源层逸出后,可以沿断层完整地进入储层并有效地保存下来。该研究为玛湖凹陷后续油气藏定量评价提供了重要评判依据,大幅提升精准度,对后续勘探具有较好的指导意义。

关键词: 地层圈闭, 圈闭有效性, 百口泉组, 玛湖凹陷, 定量评价

Abstract: To clarify the main controlling factors for formation of stratigraphic-unconformity hydrocarbon traps in the Baikouquan Formation of the Mahu Sag in the Junggar Basin,petroleum geology theory and probabilistic methods were applied to systematically analyze the reservoir architecture,identify and quantify the primary geological influencing factors,and a set of comprehensive quantitative evaluation methods were formulated.The results showed that,under the Mahu Sag's paleo-geomorphology and characteristic sedimentary system,the hydrocarbon generation areas were alkaline with abundant algal organisms; the source rocks were rich in organic matter with high conversion rates and great hydrocarbon-generation potential;and these were accompanied by extensively distributed heterogeneous tight sandstones.This combination provided the Mahu Sag with stable source conditions and favorable reservoir settings.Moreover,the combined unconformity-fault system allowed hydrocarbons to escape from source layers and migrate along faults into reservoirs with integrity and effective retention.Thestudy offers a critical basis for quantitative evaluation of reservoirs in the Mahu Sag,significantly improving accuracy and providing valuable guidance for further exploration.

Key words: stratigraphic trap, trap effectiveness, Baikouquan Formation, Mahu Sag, quantitative evaluation

中图分类号:

TE122.1

李怡普, 万泽鑫, 郑孟林, 王晓龙, 鲍一遥, 安志渊, 陈洪, 肖七林. 准噶尔盆地玛湖凹陷百口泉组地层圈闭成藏主控因素与定量评价[J]. 特种油气藏, 2026, 33(1): 52-59.

LI Yipu, WAN Zexin, ZHENG Menglin, WANG Xiaolong, BAO Yiyao, AN Zhiyuan, CHEN Hong, XIAO Qilin. Controlling factors and quantitative evaluation of stratigraphic-trap accumulation in the Baikouquan Formation, Mahu Sag,Junggar Basin[J]. Special Oil & Gas Reservoirs, 2026, 33(1): 52-59.

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准噶尔盆地玛湖凹陷百口泉组地层圈闭成藏主控因素与定量评价

Controlling factors and quantitative evaluation of stratigraphic-trap accumulation in the Baikouquan Formation, Mahu Sag,Junggar Basin

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