Borehole TV Imaging Technology for Horizontal Directional Drilling Based on an Optimization Algorithm for Structural Planes

<div>Borehole TV device. (a) Storage-based borehole TV for horizontal drilling. (b) Borehole TV device developed. (c) Camera probe section coupled with other geophysical sensors.</div>

Advances in Civil Engineering

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Figure 4

Figure 4: Borehole TV Imaging Technology for Horizontal Directional Drilling Based on an Optimization Algorithm for Structural Planes 