#1
THE END OF THE WORLDby LonelyGlider
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5241It is said that a geomagnetic reversal could easily destroy the physical world around us. What defines our world? Definitely, not just the tall buildings or green trees...
Completed
#2
ENHANCED WELLBORE PLACEMENT ACCURA...by Helmerich & Payne101
101Azimuth corrections of 1 degree lead to changes in wellbore position of 200 feet and more at TD. Improved specification of the strength and dip of the geomagnetic field...