新疆石油地质

新疆石油地质 ›› 1998, Vol. 19 ›› Issue (4): 284-286.

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辽河油田新开地区油气储集层孔隙结构特征

钟大康   

  1. 西南石油学院勘探系 四川南充 637001
  • 收稿日期:1997-03-27 出版日期:1998-08-01 发布日期:2020-09-19
  • 作者简介:钟大康：副教授 石油地质

CHARACTERISTICS OF PORE STRUCTURE OF RESERVOIR IN XINKAI AREA, LIAOHE OILFIELD

Zhong Dakang   

  1. Exploration Department, Southwest Petroleum Institute,Nanchong, Sichuan 637001
  • Received:1997-03-27 Online:1998-08-01 Published:2020-09-19
  • About author:Zhong Dakang, Associate Professor, Petroleum Geology

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摘要： 通过对辽河油田新开地区七口井5 个油组不同孔渗条件的32 个砂岩储集层样品进行孔隙铸体薄片、电镜扫描、图像分析以及压汞研究, 计算了表征储集层孔隙特征的参数7 个, 表征喉道特征的参数13 个, 反映孔喉连通性的参数3 个, 反映孔隙结构复杂性的参数1 个。综合分析这些参数认为, 该地区储集层的孔隙个体大, 喉道粗, 分选好, 孔喉连通程度较高, 毛管压力曲线多具有低而宽缓的平台段;不同的油组, 有一些差异, 相比之下, 沙一段Ⅰ 、Ⅱ油组孔隙结构最好, Ⅲ 、Ⅳ油组次之, 沙三段Ⅲ油组最差。

关键词: 辽河油田, 储集层特征, 孔隙结构, 参数, 岩石孔隙, 孔隙喉道

Abstract: Based on the studies of pore cast thin section, electric microscope scanning, image analysis and mercury injection test of 32 sandstone samples with different petrophysical properties from five oil sand layers in seven wells in Xinkai area of Liaohe oilfield, this paper calculated seven parameters of pore characterization, thirteen throat characterization, three pore-throat connection and one characterizing complexity of pore structure.In all, the reservoirs in this area have large pore, wide throat, better sorting and pore-throat connectivity.Capillary pressure curves mostly have low and wide and gentle platform segment.There are some differences in different oil sand layers, Ⅰ and Ⅱ oil formations in Sha 1 member have the best pore structure, next is Ⅲ and Ⅳ oil formations, and Ⅳ oil formation in Sha 3 member is the worst.

Key words: Liaohe oilfield, Reservoir characteristics, Pore structure, Parameter, Rock pore, Pore throat