渤海BZ油田古近系沙一二段储集层沉积相及物源方向再认识

China Petroleum and Chemical Standard and Quality(2020)

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Abstract
渤海 BZ 油田古近系沙一二段是重要的含油层段.以前一直认为沙一二段为扇三角洲前缘亚相沉积,物源方向为南北双向.随着勘探开发的深入,本文根据岩心、测井曲线、岩石组分以及重矿物等特征的分析,明确了沙一二段为辫状河三角洲前缘亚相沉积,储层更为连续,且物源方向为西南向.这一认识的转变为沙一二段油层的开发提供重要的地质依据,为油田注气开发方式的选择提供有利支撑.
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