新疆石油地质 ›› 2005, Vol. 26 ›› Issue (3): 263-265.

• 油气勘探 • 上一篇    下一篇

川口——青化砭地区长2——长7油气运聚模式

管红, 王震亮, 王晓梅   

  1. 西北大学 地质学系,西安 710069
  • 收稿日期:2004-08-09 出版日期:2005-06-01 发布日期:2020-11-23
  • 作者简介:管红(1980-),女,山东齐河人,在读硕士研究生,矿床学,(Tel)029-88307233(E-mail)guan hong1980@163.com.

Models for Hydrocarbon Migration and Accumulation of Yanchang F ormation in Chuankou-Qinghuabian Area, Erdos Basin

GUAN Hong, WANG Zhen-liang, WANG Xiao-mei   

  1. Department of Geology , Northwest University ,Xi'an, Shaanxi 710069,China
  • Received:2004-08-09 Online:2005-06-01 Published:2020-11-23

摘要: 在分析鄂尔多 斯盆地川口一青化砭地区上三叠统延长组(长2-长7油层组)油气基本成藏条件的基础上,利用盆地数值模拟技术恢复该地区地质历史时期中的成藏动力发育过程。结果发现,孔隙性砂岩体是该地区油气运移的主要输导体,砂体的展布样式直接控制该地区油气富集的部位。早白垩世期间,延长组内异常流体压力发育,砂体输导性能优越,成藏动力和输导体性能配置良好,是川口一青化砭地区主要的成藏期。在此基础上总结了川口一青化砭地区3种主要的油气运聚模式:邻源就近聚集型,近源顺层聚集型和远源跨层聚集型。

关键词: 鄂尔多斯盆地, 青化砭油田, 上三叠统, 油气运移, 油气聚集

Abstract: The analysis of petroleum accumulation conditions of U pper Triassic Y anchang formation (Chang-2 to Chang-7 sand layer) in Chuankou-Qinghuabian area in Erdos Basin is made, on which the dynamic process of petroleum accumulation during the period of geologic history in this area is reconstructed by digital basin modeling. The result shows that porous sand body is the mainly conductive system of hydrocarbon migration, and the distribution and style of sands control diretly the site of oil-gas enrichment in this area. The early Cretaceous is its main petroleum accumulation stage for abnormal flowing pressure developed in Y anchang formation, predominant conductive nature of sands and proper configuration of petroleum accumulation dynamics and conductivity. Based on these, 3 models for the main petroleum migration and accumulation in Chuankou-Qinghuabian area, namely intimate source type, close source type and distal source type are developed in this paper.

Key words: Erdos basin, Qinhuanbian oilfield, Upper Triassic, petroleum migration, petroleum accumulation

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