油层水洗级别的热解气相色谱定量判别

应用热解气相色谱资料开展水淹层评价是储层地球化学研究的一个新领域，目前，这方面的研究尚处于定性评价阶段。文章选择位于渤海湾盆地黄骅坳陷的港东油田和羊二庄油田新近系开发层系（包括馆陶组和明化镇组）为研究目的层，以岩心热解气相色谱分析为手段，开展了油层水洗级别的气相色谱定量判别的尝试。在系统分析各气相色谱参数的地质意义及其与油层水洗的关系的基础上，优选出合理的评价参数，并采用交会图技术建立不同级别水洗油层的定量判别标准，通过其他评价方法的验证，表明该定量判别方法具有实际应用价值。

PGC Quantitative Discrimination of Water-flushed Oil Layer

Evaluation of water-flushed oil layers with pyrolysis gas chromatography (PGC) is a frontier in geochemical research of reservoirs and the research in this field is still in qualitative evaluation stage at present. Taking the Neogene layer series of development, including the Guantao and Minghuazhen formations, in Gangdong and Yang'erzhuang oilfields in Huanghua depression, Bohai Bay Basin, as the targets of study, an attempt is made to quantitatively discriminate water-flushed oil layers through PGC. Based on systematic analysis of the geologic meanings of each PGC parameters and their relationship with water-flushed oil layers, rational evaluation parameters are selected and quantitative discrimination criteria for water-flushed oil layers of different levels are established by using the cross-plot technique. Verification with other evaluation methods shows that PGC quantitative discrimination is practical.