【Karst exploration】Shale gas production platform, medium deep karst exploration
Location: mountainous area of Chongqing, with large topographic relief
Task: using natural source surface wave (micro motion) method to find out the stratum structure and karst development within the depth of 900m below the designed shale gas acquisition platform.
Operation time: August 20, 2019 to August 21, 2019
Weather condition: fine
Operating equipment: GN209
Operation parameters: triple circular array with radius of 50m-100m-200m, 2Hz broadband detector, sampling rate of 4ms, gain of 24dB, 4G data real-time monitoring system.
Operation results: the detection results show that there are many low velocity anomalies below, which are consistent with the known leakage layer and karst cave location.