特种油气藏 ›› 2023, Vol. 30 ›› Issue (6): 48-54.DOI: 10.3969/j.issn.1006-6535.2023.06.007

• 地质勘探 • 上一篇    下一篇

浅层油源断裂油气运聚时期预测方法及其应用

常迪, 吕浩, 孙怀遐, 黄林, 杨浩   

  1. 中国石油青海油田分公司,青海 格尔木 816000
  • 收稿日期:2022-11-28 修回日期:2023-09-04 出版日期:2023-12-25 发布日期:2024-01-19
  • 作者简介:常迪(1990—),男,高级工程师, 2013年毕业于东北石油大学资源勘查工程专业,现从事油气田开发研究工作。
  • 基金资助:
    国家自然科学基金“伸展条件下不同走向断层生长连接模式及伴生圈闭形成机制研究”(42102173)

Research on the Prediction Method of Hydrocarbon Migration and Accumulation Period Controlled by Oil Source Fault in Shallow Layerand Its Application

Chang Di, Lyu Hao, Sun Huaiya, Huang Lin, Yang Hao   

  1. PetroChina Qinghai Oilfield Company, Golmud, Qinghai 816000, China
  • Received:2022-11-28 Revised:2023-09-04 Online:2023-12-25 Published:2024-01-19

摘要: 为研究含油气盆地浅层油源断裂的油气富集规律,全面考虑了影响浅层油源断裂运聚油气的三方面因素:油源断裂输导性、下伏被油源断裂断穿的所有区域性泥岩层的渗漏性、上覆浅层泥岩盖层的封闭性,建立了一套适用于受油源断裂控制的浅层砂泥岩地层油气运聚时期的预测方法。明确了浅层油源断裂运聚油气的时期应是油源断裂输导油气时期、下伏被断裂穿过所有区域性泥岩层渗漏时期、以及上覆浅层泥岩盖层封闭性形成时期三者的叠合时期。 将该方法应用于渤海湾盆地歧口凹陷浅层馆陶组地层,明确港东断裂油气运聚时期为明化镇组沉积中期至沉积结束。油气运聚时期的确定对指导含油气盆地浅层油源断裂油气勘探具有重要意义。

关键词: 油源断裂, 浅层, 运聚时期, 盖层, 渤海湾盆地

Abstract: In order to study the hydrocarbon enrichment law of shallow oil source fault in hydrocarbon-bearing basins, a variety of factors affecting the hydrocarbon migration and accumulation along shallow oil source fault were comprehensively considered, and a set of prediction methods applicable to the hydrocarbon migration and accumulation period controlled by oil source fault in shallow sandy mudstone formations was established. It is clarified that the hydrocarbon migration and accumulation period in shallow oil source fault should be the superposition of the period of hydrocarbon transportation in oil source fault, the period of seepage in all regional mudstone caprocks crossed by the faults, and the period of closure formation in shallow regional mudstone caprocks. The method was applied to the shallow Guantao Formation stratum of the Manqikou Sag in the Bohai Bay Basin, and it was clarified that the hydrocarbon migration and accumulation period in the Gangdong Fault was from the middle to the end of the deposition of the Minghuazhen Formation. The determination of the hydrocarbon migration and accumulation period is of great significance in guiding the hydrocarbon exploration at the shallow oil source fault in hydrocarbon-bearing basins.

Key words: oil source fault, shallow layer, migration and accumulation period, prediction method, caprock, Bohai Bay Basin

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