Changes in directional drilling and surveying practices could lead to a reduction in positional errors arising from nonconstant wellbore curvature. Part 1 of this series (OGJ, Oct. 27, 2003, p. 51) ...
Calculated borehole position may be erroneous in over half of the horizontal wells drilled during the past 15 years, according to the results of an ongoing industry study of continuous vs. stationary ...
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