西南石油大学学报(自然科学版) ›› 2007, Vol. 29 ›› Issue (5): 13-17.DOI: 10.3863/j.issn.1000-2634.2007.05.04

• 地质勘探 • 上一篇    下一篇

鄂尔多斯盆地三叠系延长组油藏地质特征

许建红1 程林松1 鲍朋2 屈雪峰3 王选茹3

  

  1. 1. 中国石油大学(北京)石油天然气工程学院,石油工程教育部重点实验室,北京 102249;2. 辽河油田公司沈阳采油厂;3. 中国石油有限公司长庆油田分公司勘探开发研究院
  • 收稿日期:2006-09-25 修回日期:1900-01-01 出版日期:2007-10-20 发布日期:2007-10-20
  • 通讯作者: 许建红

RESERVOIR CHARACTERISTICS OF YANCHANG FORMATION, IN TRIASSIC, ORDOS BASIN

XU jian-hong1 CHENG Lin-song1 BAO Peng2 et al   

  1. MOE Key Laboratory of Petroleum Engineering,College of Petroleum Engineering,China University of Petroleum,Beijing 102249, China
  • Received:2006-09-25 Revised:1900-01-01 Online:2007-10-20 Published:2007-10-20
  • Contact: XU jian-hong

摘要: 利用岩芯、测井、测试及生产动态资料,对延长组的岩性、矿物成分、物性、含油性及油水关系进行分析,研究其孔隙结构特征、可动流体饱和度与物性参数,总结电性与岩性、物性、含油性之间的关系及影响因素,得出孔隙度、渗透率及含油饱和度等油层参数的解释模型。研究结果表明,延长组储层砂岩颗粒小,胶结物含量多,孔隙喉道小,微观上孔隙类型多样,结构复杂是造成其低孔低渗的主要原因。通过对储层“四性”关系研究,提出了声电综合指数的新概念,制定了长2,长3,长4+5,长6,长8油层组的“四性”下限参考标准,用以准确地划分油、水层及干层,为正确认识油藏提供了科学依据。

关键词: 油藏地质, 延长组, 测井, 声电综合指数, 鄂尔多斯盆地

Abstract: The lithology, mineral composition, physical property, oil bearing and oilwater relationship of Yanchang Formation are analyzed by using data of drill core, well logging, testing and production performance, the relationship of characteristic of pore structure, mobile fluid saturation and physical property, are studied, too, the relationship and affecting factors among electri property, physical property and oil bearing summed up, and the interpretation model of porosity, permeability, oil saturation etc. is given. The research indicates that the reservoir beds of Yanchang formation are characterized by the little rock particles, rich cementing material, small porous throat, multifold porous forms and complex composition in microcosmic, which are the essential reasons to make it form the characteristic of low porosity and low permeability. Through the research of “four quality”, the new conception of acoustoelectric integration index is proposed, the lower limit reference criterions of “four quality”for Chang 2&3,Chang 4+5,Chang 6 and Chang 8 formation established to divide oil layer, acquifer and dry layer accurately.

Key words: reservoir geology, Yanchang Formation, well logging, acoustoelectric integration index, Ordos Basin

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