中国石油勘探 ›› 2010, Vol. 15 ›› Issue (3): 22-24,29,6.

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乌什凹陷神木1井白垩系储层微观特征

张丽娟,朱国华,魏燕萍,程明   

  1. 中国石油塔里木油田公司勘探开发研究院;中国石油勘探开发研究院杭州地质所
  • 出版日期:2010-06-15 发布日期:2010-06-15

Characteristics of Cretaceous Reservoir in Shenmu-1Well byMicroscopic ChipsObservation

Zhang Lijuan,Zhu Guohua,Wei Yanping and Cheng Ming   

  1. Zhang Lijuan1,Zhu Guohua2,Wei Yanping1,Cheng Ming1 1.Research Institute of Petroleum Exploration & Development,Tarim Oilfield Company,Korla City,Xinjiang Uygur Autonomous Region 841000;2.Hangzhou Institute of Petroleum Geology,Hangzhou City,Zhejiang Province 310000
  • Online:2010-06-15 Published:2010-06-15

摘要: 乌什凹陷神木1井白垩系舒善河组储层主要为扇三角洲平原—前缘河道的岩屑细砂岩、含砾岩屑砂岩、砂砾岩,岩心及测井平均孔隙度约为9%,为低孔低渗、特低孔特低渗储层。通过镜下分析发现,神木1井白垩系5118.8~5143.05m井段还存在薄层石英(质)砂(砾)岩,并且在5108.05~5117.83m井段碳酸盐岩岩屑颗粒含量高。总体上,舒善河组孔隙不发育,以粒间孔为主,粗岩性中发育压碎缝及构造缝,对神木1井产能贡献较大。

关键词: 乌什凹陷, 神木1, 舒善河组, 石英质岩, 碳酸盐岩岩屑, 压碎缝

Abstract: The Cretaceous Shushanhe Formation in Shenmu-1 well in Wushi sag is mainly fine litharenite, pebbly sandstone & sandstone-conglomerate in plain and front channel bed of fan delta. The average porosity of well logging and core analysis is about 9% and the reservoir is characterized by low porosity and low permeability. Observed by microscopic chips, the Cretaceous segment of 5118.8m~5143.05m in Shenmu-1 well has high amount of Carbonate grain, and high content of carbonate debris particles at 5108.05~5117.83m. The Shushanhe Formation with undeveloped pores is mainly dissolution pore, structural fractures and crush fractures develop in thick rocks, which contribute a lot to the productivity of Shenmu-1 well.

Key words: Wushi sag, Shenmu-1 well, Shushanhe Formation, quartzite, carbonate debris, crush fractures

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