油气藏评价与开发 ›› 2019, Vol. 9 ›› Issue (1): 1-7.

• 油气地质 • 上一篇    下一篇

鄂尔多斯盆地富县地区长8油层组致密油成藏主控因素分析

刘秀婵1,陈西泮2   

  1. 1. 延安大学石油工程与环境工程学院,陕西 延安 716000
    2. 延长油田股份有限公司,陕西 延安 716000
  • 收稿日期:2018-06-06 发布日期:2019-02-15 出版日期:2019-02-26
  • 作者简介:刘秀婵(1985—),女,硕士,讲师,石油天然气勘探开发。
  • 基金资助:
    国家自然科学基金“陆相页岩岩性非均质性及其对油气滞留的影响”(41702136);延安大学2015年度校级青年项目(YDK2015-66);延安大学2018年度校级青年项目(YDK2018-27)

Analysis on main controlling factors of tight oil reservoirs in Chang-8 reservoir of Fu County, Ordos Basin

Liu Xiuchan1,Chen Xipan2   

  1. 1. School of Petroleum Engineering and Environmental Engineering, Yan'an University, Yan'an, Shaanxi 716000, China
    2. Shaanxi Yanchang Petroleum Co., Ltd., Yan'an, Shaanxi 716000, China
  • Received:2018-06-06 Online:2019-02-15 Published:2019-02-26

摘要:

基于大量岩心分析数据,从研究鄂尔多斯盆地富县地区延长组长8致密油性质、赋存空间入手,综合分析该区致密油成藏主控因素。富县长8段细砂岩含低密度、低黏度可流动致密油,且多聚集在微米级孔喉中。致密油成藏主要受控于广泛发育的长7、长9烃源岩,“源夹储、储内夹源”成藏模式,水下分流河道微相环境下形成的复合叠置沉积砂体优质储层三大因素。根据上述致密油藏控制因素,结合目前勘探实践,预测出富县地区长8致密油6个潜力区块,为下一步勘探提供依据。

关键词: 成藏主控因素, 致密油, 长8油层组, 富县地区, 鄂尔多斯盆地

Abstract:

Based on the massive analytical data of core, we comprehensively researched on the main controlling factors of the tight oil reservoir according to the property and the storage space of the tight oil formation in Chang-8 reservoir of Fu County in Ordos Basin. Fine sandstone in Chang-8 reservoir contained the movable tight oil with low density and low viscosity, and mostly concentrated in micron-sized pore throats. The accumulation of tight oil was mainly controlled by three factors that were the source rocks of Chang-7 and Chang-9 reservoirs, the main accumulation mode of "the reservoir existed in the resource, and the resource existed in the reservoir", and the high quality reservoir with composite superimposed sedimentary sand body formed in the underwater distributary channel microfacies environment. Based on the controlling factors above, and combined with the current exploration results, we predicted 6 potential blocks of Chang-8 tight oil reservoir in Fu County, and provided the basis for the further exploration.

Key words: controlling factors of reservoir formation, tight oil, Chang-8 reservoir, Fu County, Ordos Basin

中图分类号: 

  • P512