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北大港油田港中开发区沙三段沉积环境为受北部燕山物源及西北部港西孤岛近物源影响下的远岸水下扇沉积,储层岩性主要为长石砂岩和长石岩屑砂岩。本文利用测井、录井、岩心、试油和分析化验等资料,对港中开发区沙三段砂岩储层的岩性、物性、电性及含油性特征进行深入研究,确定了该区沙三段油层有效厚度下限标准,为该区油层综合评价和储量计算提供可靠的依据。
The sedimentary environment in the third member of the Hong Kong-China Development Zone in Beidagang Oilfield is deposited by the far-ocean submarine fan under the influence of the Yanshanian source in the north and the near source of the Hong Kong-Tibet island in the northwest. The reservoir lithology is mainly feldspar and feldspar Sandstone. In this paper, the lithology, physical properties, electrical properties and oil-bearing characteristics of sandstone reservoirs of Es3 in the Hong Kong-China Development Zone are studied in depth by well logging, mud logging, core drilling, oil testing and analysis. The lower limit of the effective thickness of the third member of the reservoir provides a reliable basis for the comprehensive evaluation and reserve calculation of the reservoir.