Dealing With Driller Depth Errors
If exploration derived prognosed depths are significantly different than the Driller's Depths, for example by 10-30m, then warning bells come up – it is possible a pipe section or stand has been left off the calculations. If this is suspected, then the drill string should be measured (in tension) when the string is next pulled out of the hole, and the results checked with the tally. Mudloggers should be vigilant, as they provide the opportunity to cross check with the drilling company.
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