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老区油田在漫长的勘探开发过程中,难以保证所有井的测井数据都采用相同类型的仪器及统一标准。同时采用同一种仪器同一个刻度不同的环境、不同的操作人员结果也不相同。为了更准确的获取地层的信息,需要对测井曲线进行标准化处理。依据岩石物理参数特征规律,同一工区内,相同的沉积环境、相同的层位,岩石具有相近的地球物理学参数特征[1-3]。本文以U9井区J2t油层段为例,选取J2t顶部泥岩为标准层,利用均值校正法对工区目的层测井曲线标进行标准化处理。处理后,单井密度与岩心孔隙度之间的相关性得到较大幅度的提高,为后期开展下一步解释工作奠定了基础。此方法对于盘活老区的油藏挖潜具有举足轻重的作用及意义。
During the long exploration and development process in the old oilfield, it is difficult to ensure that the logging data of all wells are of the same type and uniform standard. At the same time using the same instrument with a different scale of the same scale, the results of different operators are not the same. In order to get more accurate information of stratigraphy, we need to normalize the logging curve. According to the characteristics and laws of petrophysical parameters, the same sedimentary environment, same horizon and rock have similar geophysical parameters in the same work area [1-3]. Taking the J2t reservoir section in the well of U9 as an example, the top mudstone of J2t is selected as the standard layer, and the log calibration standard of the target layer in the working area is normalized by means of the mean value correction method. After treatment, the correlation between single well density and core porosity has been greatly improved, which lays the foundation for the next step of interpretation work. This method plays an important role and significance for tapping the potential of reservoirs in the old area.