郑秀娟,张淑梅
Zheng Xiujuan (Logging Conpany;Daqing Petroleum Administrative Bureau)Zhang Shumei (Daqing Petroleum Institute);

• 1:大庆石油管理局测井公司
• 2:大庆石油学院

摘要(Abstract)：

大庆油田外围地区塔20井第8层等油(气)层电阻率比较低(52Ωm以下),按常规解释方法,判断为水层或油水同层。射孔后出纯油,甚至自喷,产量高达18.34m~8/d,且不含水。对这些层岩心分析的结果表明,储油层电阻率低的主要原因在于砂岩含有自生粘土矿物伊利石并呈搭桥式产状。在利用测井资料评价低电阻率储集层时,可用密度-中子孔隙度交会图估计粘土矿物的成分,然后再根据地层埋藏深度估计粘土矿物的产状。对于这类地层油水层界限值V_(wf)应增大到0.12。此外,综合研究其它录井资料以及地质、构造特征,对正确评价低阻油气层也是必要的
Due to the comparatively low resistivity (lower than 25Ωm) of some layers such as the eighth oil(gas)layer ete.in Well-Ta 20 in the surrounding area of Daqing Oilfield. These layers are considered as water-bearing or oil-water bearing based on convcntional logging interpretation. But after perforation the well produced oil without water, even flowed, WJth an oil production up to 18.34m3/d. Core analysis from these layers showed that the low resistivity of these oil reservoirs is mainly caused by the presence of the autogenous clay mineral-illite in sandstones and the bridge type of accurerce. When logging data are used to evaluate low resislivity reservohs, density-neutron porositycross plot can be used to estimate the composition of clay minerals and the ac-curence of clay minerals are determined based on the buried depth of layers. For such kind of formations, the boundary value (Vwf) of oil-water layer should be increased to 0.12. Besides, a comprehensive study on data of logging,geological and structural features is also necessary for evaluating low resistivity oil and gas reservoirs.

关键词(KeyWords)：

Abstract:

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基金项目(Foundation):

作者(Authors): 郑秀娟,张淑梅
Zheng Xiujuan (Logging Conpany;Daqing Petroleum Administrative Bureau)Zhang Shumei (Daqing Petroleum Institute);

DOI: 10.19597/j.issn.1000-3754.1987.03.012

参考文献(References)：

• (1)郑秀娟:用魏克斯曼-斯密茨模型价泥质砂岩储集层,《大庆石油地质与开发》,1985年,第4期。
• (2)郑秀娟:“双水法”在大庆油田外围地区的应用,《大庆油地质与开发》,1983年,第3期．