新疆石油地质

新疆石油地质 ›› 2008, Vol. 29 ›› Issue (4): 513-516.

• 应用技术 • 上一篇    下一篇

T60井高、低阻油层特征及低阻油层识别方法(为庆祝新疆油田勘探开发研究院成立50周年而作)

沈英1,2,3, 凌云3, 祝嗣全3, 罗玲3, 张小莉1   

  1. 1.西北大学地质系, 西安710069;
    2.中国科学院地质与地球物理研究所, 北京100029;
    3.中国石油新疆油田分公司勘探开发研究院, 新疆克拉玛依834000
  • 收稿日期:2008-01-09 发布日期:2020-10-09
  • 作者简介:沈英(1966-),女,上海人,高级工程师,在读博士研究生,沉积储层(, Tel)0990-6225159(E-mail)shenying@petrochina.com.cn.

The Characteristics of High-Low Resistivity Oil Layers and the Identification of Low-Resistivity Oil Layers in Well Tai-60

SHEN Ying1,2,3, LING Yun3, ZHU Si-quan3, LUO Ling3, ZHANG Xiao-li1   

  1. 1. Department of Geology, Northwest University, Xi'an, Shaanxi 710069, China;
    2. Institute of Geology and Geophysics, CAS, Beijing 100029, China;
    3. Research Institute of Exploration and Development, Xinjiang Oilfield Company, PetroChina, Karamay,Xinjiang 834000, China
  • Received:2008-01-09 Published:2020-10-09

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摘要： 从高、低阻两类油层的岩性、物性、孔隙结构特征入手, 探讨了低电阻率油层形成的原因, 认为, 束缚水饱和度高及伊蒙混层矿物含量高是形成低电阻率油层的主要原因, 在此基础上对高、低阻油层测井响应特征进行了分析, 认为低阻油层与邻近泥岩、干层的测井响应特征相似, 可应用密度-声波、密度-补偿中子曲线重叠方法, 结合三电阻率曲线的相对关系, 同时利用有机地化指标的约束, 对低电阻率油层进行了有效识别。经试油资料验证, 上述方法可以快速识别低电阻率油层。

关键词: 油层, 束缚水饱和度, 电阻率, 测井响应

Abstract: Based on the features of the two types of reservoirs, the characteristics of lithological and physical properties, pore structures and their differences between high-and low-resistivity oil layers are studied for the purpose of effective identification of such oil layers in Well Tai-60. It is suggested that the origin of low-resistivity oil layers is the relatively high irreducible water saturation and high content of illite-montmorillonite mixed-layer minerals. And the low well log response differences between these oil layers show that the well log response of low-resistivity oil layers is similar to those of neighboring mudstones and dry layers. These results are not effectively used to identify the low-resistivity oil layers with conventional logging methods. This paper presents the method by well logs, overlapping densitysonic and density-compensated neutron logging curves, integrated with the relatively relationships among the three resistivity curves as well as the geochemical indices for effective identification of the low-resistiveiy oil layers. The production test data indicate that this method can be used to realize the fast-identification of low-resistivity oil layers.

Key words: oil layer, irreducible water saturation, resistivity, well log response

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