大斜度井中感应测井仪器校正处理方法及应用

Correction Processing Method and Application of Induction Logging Tool in Highly Deviated Wells

为解决感应测井仪器在大斜度井应用中遇到的倾斜校正处理技术难题,从感应测井理论方法入手,建立实际测量信号处理算法。基于倾斜校正处理方法,使用相邻子阵列的信息,通过噪声控制因子约束,设计斜井校正滤波器;基于井眼侵入影响,根据实际测量信号处理算法,将处理结果从直井投影到斜井得到不同探测深度的电阻率曲线,实现了实际感应测井资料处理。在此基础上,建立以自适应侵入影响和倾斜影响校正为核心的感应测井资料有效数据处理方法,提高了测井曲线的分析能力。实际测井资料应用表明,基于感应测井仪器的倾斜校正处理方法能有效获取地层电导率真值,提高测井资料的处理能力,在解释评价中具有重要的应用价值。

To solve the problem of tilt correction processing technology encountered in the application of induction logging tool in highly deviated wells,starting from the theoretical model and method of induction logging in deviated wells,an actual measurement signal processing algorithm is established.Based on the tilt correction processing method,the information of adjacent subarrays is used to design the tilt correction filter by noise control factor suppression.Based on the influence of borehole invasion and the actual measurement signal processing algorithm,the resistivity curves of different detection depth can be obtained by projecting the processing actual logging data from vertical well to deviated-well.On this basis,an effective data processing method for induction logging data with adaptive invasion effect and tilt effect correction as the core process is established,which improves the ability of logging analysis.The application of actual logging data shows that the inclination correction method based on array induction tools is effective in obtaining the true value of formation conductivity,and has important application value in improving the processing ability and interpretation evaluation of logging data.