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利用常规测井资料评价致密储层的含油气性往往具有多解性。根据储层定量荧光分析(QGF和QGF-E)的技术特点,将其应用于渤海海域黄河口凹陷BZ-A构造沙河街组储层中,结合测井解释和试油结果,探究该技术在致密储层流体识别中的应用效果。研究表明,通过QGF-E强度得出的BZ-A构造现今油水界面与测井解释的界面深度相近。研究区油水层的判别基准线约为70pc,含油饱和度与QGF-E强度正相关,测井解释为油层段的样品QGF-E强度值绝大多数>70pc,含油水层和水层段均小于该值。利用储层定量荧光技术建立了该区含油性判别标准并利用试油结论进行验证,有效识别出了沙一段上部干层段和测井资料遗漏的沙一段下部的致密油层,该技术可以为判别致密储层的流体性质提供新的方法支持。
The evaluation of gas-bearing properties of tight reservoirs using conventional log data is often multi-solution. According to the technical characteristics of quantitative analysis of QGF and QGF-E reservoirs, this method is applied to the reservoir of Shahejie formation of BZ-A structure in the Huanghekou depression of the Bohai Sea. Based on well logging interpretation and oil test results, Application effects of fluid identification in tight reservoirs. The results show that the BZ-A structure obtained by the QGF-E intensity has a similar interface depth to the log interpretation at present. The baseline for the identification of oil-water layers in the study area is about 70 pc. The oil saturation is positively correlated with the QGF-E intensity. The log interpretation is that the QGF-E intensity values of the reservoir sections are mostly> 70 pc. Both the oil-bearing water layer and the water layer Less than this value. Using the method of reservoir quantitative fluorescence to establish the discriminant criterion of oil content in this area and validating it with the conclusion of oil test, the tight oil layer in the upper part of Sha1 Member and the lower part of Sha1 Member missed by well logging data can be effectively identified. The fluid properties of tight reservoirs provide new methodological support.