岩性油气藏 ›› 2015, Vol. 27 ›› Issue (2): 83–91.doi: 10.3969/j.issn.1673-8926.2015.02.013

• 技术方法 • 上一篇    下一篇

三塘湖盆地沉凝灰岩致密油藏测井评价技术与应用

焦立新,刘俊田,李留中,韩 成,张 品,龙 飞   

  1. 三塘湖盆地沉凝灰岩致密油藏测井评价技术与应用
  • 出版日期:2015-03-03 发布日期:2015-03-03
  • 作者简介:焦立新( 1969- ),男,博士,高级工程师,主要从事石油地质综合研究工作。 地址:( 839009 )新疆哈密市石油基地勘探开发研究院。 电话:( 0902 ) 2765361 。 E-mail : jiaolx@petrochina.com.cn 。
  • 基金资助:

    国家重大科技专项“岩性地层油气藏成藏规律、关键技术及目标评价”(编号: 2011ZX05001-002-004 )与中国石油股份有限公司“新疆大庆”重大科技专项“中小型叠合盆地石油地质条件整体评价及勘探技术研究”(编号: 2012E-34-04 )联合资助

Logging evaluation technology and application of tight tuff reservoir in Santanghu Basin

JIAO Lixin, LIU Juntian, LI Liuzhong, HAN Cheng, ZHANG Pin, LONG Fei   

  1. Logging evaluation technology and application of tight tuff reservoir in Santanghu Basin
  • Online:2015-03-03 Published:2015-03-03

摘要:

三塘湖盆地多口探井相继在条湖组沉凝灰岩储集层中获得工业油流,使其成为吐哈油田热点勘探领域。 研究表明:沉凝灰岩的有机碳含量高、厚度大,是良好的烃源岩;储集层岩性除沉凝灰岩外,夹有生物碎屑、炭屑及少量泥质条带,具有一定的沉积特征;储集层孔隙度为 5.5%~24.0%,渗透率普遍小于 0.5 mD,含油饱和度平均在 70%以上,属于大孔隙、特低渗、高含油饱和度的沉凝灰岩致密油藏。通过 Δlog R方法开展烃源岩测井定量评价;以岩石薄片鉴定和全岩矿物分析为基础,通过岩心刻度测井,建立和完善沉凝灰岩与泥岩等的识别方法和评价标准;结合岩心分析、CT 扫描和毛管压力曲线资料开展储集层微观特征研究;利用组合式测井资料开展有效储集层物性评价和孔隙度计算,在岩性油藏整体认识的基础上开展含油性评价。基本形成了一套沉凝灰岩致密油藏测井评价配套技术与方法,在生产中取得了较好的应用效果。

关键词: 砂体分布, 成因类型, 控制因素, 车排子地区, 春光油田

Abstract:

 The tuff reservoir of Tiaohu Formation obtained industrial oil flow in many wells in Santanghu Basin, which makes it become a new hot field of exploration in Tuha Oilfield. Research shows that except tuff, the reservoir lithologies include biodetritus, charcoal and a few muddy strips, with some sedimentary characteristics, and the tuff has abundant organic carbon, with large thickness, as good source rocks. The reservoir porosity ranges from 5.5% to 24.0%, the permeability is generally less than 0.5 mD, and the average oil saturation is above 70%, so it belongs to tight tuff reservoir with large pores, ultra-low permeability and high oil saturation. Based on Δlog R logging technology, this paper carried out a quantitative evaluation of hydrocarbon source rocks; on the basis of rock slices and whole-rock mineral analysis, established and improved the identification methods and standards of tuff and mudstone by core logging; combined with core analysis, CT scanning and mercury capillary pressure data, studied microscopic characteristics of the reservoir; conducted effective reservoir evaluation and porosity calculation by combined logging data; on the basis of the reservoir lithology, carried out oil-bearing property evaluation, basically formed a set of techniques and methods of logging evaluation for tight tuff reservoir, and achieved good effects in production.

Key words:  sand body distribution, genetic types, controlling factors, Chepaizi area, Chunguang Oilfield

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