Day 3 Thu, May 25, 2023 2023
DOI: 10.2118/214561-ms
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Three-Dimensional Positional Uncertainty Based on Along-Hole Depth, Inclination and Azimuth Accuracies

Abstract: Along-hole Depth (AHD) is the most fundamental subsurface wellbore measurement made. Well depth is the main descriptor of wellbore position, measured from zero depth point (ZDP). This is translated into vertical depth (V) using inclination (I). V is the main descriptor subsurface wellbore events and then North (N) and East (E) act as the Qualifying descriptions of V. Well depth is commonly described as measured depth (MD) and is used to describe well construction, navigation and collision avoida… Show more

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