Fine Detection and Analysis of Hidden Karst in Wellsite with Quasi-Three-Dimensional TDEM Based on Lateral Constraint

Figure 1

Logging interpretation diagram of well ZY1 leakage imaging. (a) Feature diagram of well ZY1 conventional logging. (b) Fracture diagram of drill pipe. (c) Circumferential acoustic scanning tool (CAST-F) imaging logging, showing dark clumps at 554.0 ~ 562.0 m, indicating that large corrosion holes were developed in this section, resulting in fluid loss.

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