海拉尔盆地贝西南地区南屯组油气侧向运移路径综合确定及运移模式探讨

doi:10.3969/j.issn.1006-6535.2022.04.005

特种油气藏 ›› 2022, Vol. 29 ›› Issue (4): 38-46.DOI: 10.3969/j.issn.1006-6535.2022.04.005

海拉尔盆地贝西南地区南屯组油气侧向运移路径综合确定及运移模式探讨

孙同文¹, 王芳¹, 王有功², 李军辉³, 姚诗华¹, 李冰妮¹, 成镱娜¹, 刘敏华¹

1.广东石油化工学院,广东茂名 525000;
2.东北石油大学三亚海洋油气研究院,海南三亚 572025;
3.中国石油大庆油田有限责任公司,黑龙江大庆 163712

收稿日期:2021-12-12 修回日期:2022-05-29 出版日期:2022-08-25 发布日期:2023-01-09
作者简介:孙同文(1984—),男,副教授,2008年毕业于大庆石油学院资源勘查工程专业,2014年毕业于东北石油大学矿产普查与勘探专业,获博士学位,现主要从事油气运移与保存条件研究工作。
基金资助:
国家自然科学基金“张性断裂交汇部位油气运聚机理及有利类型预测”(41602164);广东石油化工学院科研基金项目“断裂交汇部位垂向优势输导油气条件研究”(2018rc02)

Comprehensive Determination of Lateral Migration Routes and Exploration of Migration Patterns of Hydrocarbons in Nantun Formation, SW Beier Sag, Hailar Basin

Sun Tongwen¹, Wang Fang¹, Wang Yougong², Li Junhui³, Yao Shihua¹, Li Bingni¹, Cheng Yina¹, Liu Minhua¹

1. Guangdong University of Petrochemical Technology, Maoming, Guangdong 525000, China;
2. Northeast Petroleum University Sanya Offshore Oil & Gas Research Institute, Sanya,Hainan 572025, China;
3. PetroChina Daqing Oilfield Co. Ltd., Daqing, Heilongjiang 163712, China

Received:2021-12-12 Revised:2022-05-29 Online:2022-08-25 Published:2023-01-09

摘要/Abstract

摘要： 贝西南地区是目前海拉尔盆地贝尔凹陷中含油性较好的重点勘探区块,为查明油气运移对成藏的影响,采用以油气来源分析为基础、以油气分布特征为指示、以运移数值模拟为约束、以地球化学示踪为佐证的“四位一体”油气运移路径综合确定方法,对研究区南屯组的油气运移路径和运移模式进行了研究。结果表明:南屯组主要有3组油气运移路径,一是由贝西北次凹沿其短轴方向向贝西斜坡侧向运移;二是由贝西南次凹沿其短轴方向向呼和诺仁构造带运移;三是由贝西北和贝西南次凹向呼和诺仁构造带汇聚的油气,沿构造脊和断层走向向西南部运移。在明确运移路径基础上总结出3种油气侧向运移模式:沿构造脊及断层走向运移模式、同向断阶“阶梯状”运移模式和反向断阶“牙刷状”运移模式,各种运移模式控制的油气富集部位和油藏类型有较大差异。研究结果对研究区下一步的有利区优选和类似地区油气勘探具有一定的指导意义。

关键词: 油气运移, 运移模式, 数值模拟, 南屯组, 贝西南地区, 海拉尔盆地

Abstract: SW Beier Sag is currently a key exploration block with high oil reserves in Hailar Basin. In order to identify the influence of hydrocarbon migration on hydrocarbon accumulation, a "four-in-one” comprehensive determination method of hydrocarbon migration path, which was based on hydrocarbon source analysis, with hydrocarbon distribution characteristics as an indicator, migration numerical simulation as a constraint and geochemical tracing as a supporting evidence, was adopted to study the hydrocarbon migration paths and patterns of Nantun Formation in the study area. The results indicated that there were three hydrocarbon migration paths in Nantun Formation. One path was to migrate laterally from NW Beier Sub-sag to West Beier Slope along its short axis; the second path was to migrate from SW Beier Sub-sag to Huhenuoren Tectonic Belt along its short axis; and the third path was to accumulate hydrocarbon from NW and SW Beier Sub-sags to Huhenuoren Tectonic Belt and migrate to the southwest along the strike of tectonic ridge and fault. On the basis of the identification of migration paths, three types of lateral hydrocarbon migration patterns were summarized, including the migration along the strike of tectonic ridge and fault, the "stepped" migration along synclinal fault and the "toothbrush-like” migration along reverse fault. There were significant differences in the hydrocarbon accumulation sites and reservoir types controlled by the various migration patterns. The results of the study are of some significance for the next selection of favorable zones in the study area and for oil and gas exploration in similar areas.

Key words: hydrocarbon migration, migration pattern, numerical simulation, Nantun Formation, SW Beier Sag, Hailar Basin

中图分类号:

TE122.2

孙同文, 王芳, 王有功, 李军辉, 姚诗华, 李冰妮, 成镱娜, 刘敏华. 海拉尔盆地贝西南地区南屯组油气侧向运移路径综合确定及运移模式探讨[J]. 特种油气藏, 2022, 29(4): 38-46.

Sun Tongwen, Wang Fang, Wang Yougong, Li Junhui, Yao Shihua, Li Bingni, Cheng Yina, Liu Minhua. Comprehensive Determination of Lateral Migration Routes and Exploration of Migration Patterns of Hydrocarbons in Nantun Formation, SW Beier Sag, Hailar Basin[J]. Special Oil & Gas Reservoirs, 2022, 29(4): 38-46.

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海拉尔盆地贝西南地区南屯组油气侧向运移路径综合确定及运移模式探讨

Comprehensive Determination of Lateral Migration Routes and Exploration of Migration Patterns of Hydrocarbons in Nantun Formation, SW Beier Sag, Hailar Basin

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