Downhole video logging technique captures borehole images by downhole camera and can be applied to well casing inspection, downhole fishing, downhole completion quality inspection, etc.
井下视频成像测井利用井下摄像头获取井眼实时图像信息，可用于套管检测、落物打捞、井下作业质量检查等。
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Introduced in the paper are the principle and method of borehole elastic modulus inspection and sound wave inspection used in the quality inspection of grouted rock mass of a dam foundation.