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随着石油勘探程度的提高,对储集层评价精度的要求也越来越高,相应地对测井资料的垂直分辨率提出了新的要求。本文采用了一种重新组会长、短源距探测器响应的算法来提高补偿密度曲线的垂直分辨率。用标准“脊助”图密度ρb与平均后的短源距探测器密度ρmear(其分辨率与ρb一致)的差值,对未平均的短源距探测器密度ρnear进行补偿。通过这种补偿后,密度测井曲线的垂直分辨率有了明显的提高,同时又保留了原补偿密度对井眼的补偿能力。把上述算法应用于某油田的几口井,并与岩芯资料进行了详细对比,说明这种算法对提高密度曲线的垂直分辨率是有效的。
With the improvement of the degree of petroleum exploration, the requirements for reservoir evaluation accuracy are also getting higher and higher. Correspondingly, new requirements are put forward for the vertical resolution of logging data. In this paper, an algorithm to re-group the president and short-source detector response is used to improve the vertical resolution of the compensation density curve. The average ρnear of the short-range detector is compensated by the difference between the standard ridge ρb density and the averaged short-source detector ρmear (whose resolution is the same as ρb). Through this compensation, the vertical resolution of the density log has been significantly improved, while retaining the compensation capacity of the original compensation of the borehole. Applying the above algorithm to several wells in an oilfield and comparing them with the core data shows that this algorithm is effective in increasing the vertical resolution of the density curve.