中国石油勘探 ›› 2019, Vol. 24 ›› Issue (2): 210-217.DOI: 10.3969/j.issn.1672-7703.2019.02.009

• 石油地质 • 上一篇    下一篇

松辽盆地南部扶余致密油“甜点”刻画技术研究与效益建产模式探索

于利民1,2, 江涛2   

  1. 1 东北石油大学;
    2 中国石油吉林油田公司
  • 收稿日期:2018-10-13 修回日期:2019-02-19 出版日期:2019-03-15 发布日期:2019-03-15
  • 基金资助:
    国家科技重大专项“大型油气田与煤层气开发”(2016ZX05046-006)。

“Sweet spots” description and production capacity construction of Fuyu tight oil reservoirs in southern Songliao Basin

Yu Limin1,2, Jiang Tao2   

  1. 1 Northeast Petroleum University;
    2 PetroChina Jilin Oilfield Company
  • Received:2018-10-13 Revised:2019-02-19 Online:2019-03-15 Published:2019-03-15
  • Supported by:
     

摘要: 松辽盆地南部扶余致密油是上生下储式"倒灌"成藏,在油气充注不足的背景下形成了大面积连片分布的致密岩性油藏,储层非均质性强、渗透率低(<0.5mD)、含油饱和度低(<50%)、含水高(>80%)、可动流体含量少(<20%)等特征导致其很难实现效益开发。近几年随着致密油成为主要的勘探开发对象,为了加快致密油的开发动用节奏,通过油藏精细解剖,明确了构造背景有利、储层气油比高两个富集高产因素,以此为基础深入开展"地震甜点""开发甜点""压裂甜点"刻画技术研究,提高了致密油水平井的钻探效果和改造效果。与此同时,依托于项目部新的运行机制、一体化管理模式及市场化运作方式,在低油价下,推动松辽盆地南部乾安地区扶余致密油实现了效益开发。

 

关键词: 乾安地区, 扶余致密油, 富集高产因素, 甜点, 一体化

Abstract: In southern Songliao Basin, tight oil was generated in upper formations and preserved in lower formations in the Fuyu Formation. With insufficient hydrocarbon charging, large-scale continuous tight lithologic reservoirs were formed. They can hardly be economically developed because of the strong heterogeneity, low permeability (<0.5 mD), low oil saturation (<50%), high water content (>80%), and low mobile fluid content (<20%). To facilitate the development of tight oil, fine reservoir description was carried out, and then, favorable structural setting and high gas-to-oil ratio were clarified as key factors controlling oil accumulation and productivity. On this basis, the techniques were developed to identify "seismic sweet spots", "development sweet spots" and "fracturing sweet spots". Thus, the drilling and stimulation performance of tight oil horizontal wells has been improved. Coupled with new operating mechanism, integrated management and market-oriented operation, the Fuyu tight oil reservoir has been economically developed in the Qian'an area, southern Songliao Basin.

Key words: Qian'an area, Fuyu tight oil, factors controlling oil accumulation and productivity, sweet spots, integration

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