新疆石油地质 ›› 1998, Vol. 19 ›› Issue (6): 485-489.

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焉耆盆地宝浪油田低孔低渗储集层孔隙结构特征

张人雄, 邓志展, 毛中源, 李晓梅   

  1. 河南石油勘探局勘探开发研究院 南阳 473132
  • 收稿日期:1998-05-12 发布日期:2020-09-19
  • 作者简介:张人雄:硕士 油藏物理

PORE STRUCTUREOF LOW-POROSITY AND LOW-PERMEABILITY RESERVOIR IN BAOLANG OILFIELD, YANQI BASIN

Zhang Renxiong, Deng Zhizhan, Mao Zhongyuan, Li Xiaomei   

  1. Research Institute of Exploration and Development, Henan Petroleum Exploration Bureau, Nanyang 473132
  • Received:1998-05-12 Published:2020-09-19
  • About author:Zhang Renxiong, Master, Reservoir Engineering

摘要: 针对新疆焉耆盆地宝浪油田低孔、低渗储集层特点, 采用常规压汞、地层上覆压力下单向水平压汞、铸体薄片及图象分析等技术, 对该油田储集层孔隙结构特征进行了研究, 将有效储集层划分为中孔中细喉、中孔细喉、小孔微细喉、小孔微喉等四类孔喉模式。孔隙结构具有喉道正偏态粗歪度、孔隙负偏态细歪度、高孔喉比、喉道分选中等偏差、孔隙分选较好的特点。上覆地层压力对渗透率及孔隙结构特征影响很大。

关键词: 新疆, 焉耆盆地, 储集层特征, 孔隙结构

Abstract: Pore structure of low-porosi ty and low-permeability reservoir in Baolang oilfield, Yanqi basin was examined with conventional mercury injection, directed horizontal flow mercury injection at overburden pressure, cast thin section and image analysis.Pore-throat combination was divided into four modes:medium pore and medium-fine throat, medium pore and fine throat, small pore and tiny throat, and small pore and mini throat.Pore structure is characterized by coarse skewness of throat, fine skewness of pore, high pore-to-throat ratio, medium-toward-poor throat sorting and good pore sorting.Overburden pressure has a strong influence on permeability and pore structure.

Key words: Xinjiang, Yanqi basin, Reservoir characteristics, Pore structure