多种测井曲线校正方法在塔中顺9井区的应用

The Application of Several Logging Curve Correction Methods to Well Shun-9Block of Tazhong Area in Tarim Basin

针对顺9井区柯坪塔格组声波时差和密度曲线失真严重的问题。首先建立了工区的区域岩石物理模板判断测井曲线的失真段,然后使用了经验公式法、多元线性拟合法和岩石物理建模法对声波时差和密度曲线进行了校正。对比发现,经验公式法和多元线性拟合法适用于井眼垮塌较小的井段,而岩石物理建模更适用于井眼垮塌较严重的井段。最后利用区域岩石物理模板和合成地震记录标定约束并检验了曲线校正的结果。结果表明这三种曲线校正方法在顺9井区的应用是有效的、可行的。

The value of slowness and density curve distorts seriously in Kepingtag formation of Well Shun-9block.To solve this problem,a regional rock physics model has been established firstly to determine the distortion interval.Then the empirical formula method,multiple linear fitting,and rock physics modeling method are used to correct the slowness and density curve.By comparison,Empirical formula method and multiple linear fitting method are suitable for slight borehole collapse interval,while rock physics model is more suitable for severe borehole collapse interval.The use of regional rock physics model and synthetic seismogram calibration constraints and verifies the result of the calibration curve.The results show that these three kinds of curve correction methods are effective and feasible in the application of Well Shun-9block.