The integrated geophysical study around pipe 1 and pipe 2 in Wjarakarur Kimberlite Field (WKF) assisted in comprehending the response of pipes. In the present study, we have attempted a combined analysis of very low-frequency electromagnetic (VLF-EM), electrical resistivity tomography (ERT), and magnetic methods to analyze the response from pipe 1 and pipe 2. A comparative analysis along all the profiles revealed the extension, depth, and geometry of the pipes. The results of VLF data and ERT data have been compared for two profiles of pipe 1 and pipe 2. Fraser-filtered grid map generated from all profiles of pipe 1 proficiently demarcated the trend of kimberlite pipe extension with high Fraser filter value associated with kimberlite. The ground-based magnetic data around pipe 1, pipe 2, and pipe 6 have been processed to analyze the magnetic behavior and subsurface structure based on the susceptibility contrasts. Analytical signal (AS) map revealed the extension of pipes, which was validated with the Fraser-filtered grid map. Analytical signal anomaly pattern reveals that pipe 1, pipe 2, and pipe 6 are trending in SW-NE, NE-SW, and NE-SW, respectively. Based on this study, the results indicate the conducting nature of pipe 1, whereas pipe 2 is resistive in nature. Further, the Euler deconvolution technique has been applied to calculate the possible depth of pipes from magnetic data. The comparisons of calculated depth ranges obtained from all geophysical techniques correlate well and validate the result (Table 1). The geological borehole data at pipe 1 and pipe 2 reported by the Geological Survey of India are well corroborated with our combined geophysical study.

Wjarakarur 金伯利岩油田 (WKF) 围绕管道 1 和管道 2 进行的综合地球物理研究有助于理解管道的响应。在本研究中，我们尝试结合甚低频电磁 (VLF-EM)、电阻率层析成像 (ERT) 和磁方法来分析管道 1 和管道 2 的响应。剖面显示了管道的延伸、深度和几何形状。对管道 1 和管道 2 的两个剖面的 VLF 数据和 ERT 数据的结果进行了比较。从管道 1 的所有剖面生成的弗雷泽过滤网格图，通过与金伯利岩相关的高弗雷泽过滤值，熟练地标定了金伯利岩管道延伸的趋势。对管道 1、管道 2 和管道 6 周围的地面磁数据进行了处理，以根据磁化率对比分析磁行为和地下结构。分析信号（AS）图显示了管道的延伸，并通过弗雷泽过滤网格图进行了验证。分析信号异常模式显示，管道 1、管道 2 和管道 6 分别呈西南-东北、东北-西南和东北-西南趋势。根据这项研究，结果表明管道 1 具有导电性质，而管道 2 具有电阻性质。此外，欧拉反卷积技术已应用于根据磁数据计算管道的可能深度。从所有地球物理技术获得的计算深度范围的比较具有良好的相关性并验证了结果（表1）。印度地质调查局报告的1号管和2号管的地质钻孔数据与我们的联合地球物理研究得到了很好的佐证。