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  Subject Replies Date
I need to know the Ouija Board formulas to extrapolate.Can Someone help me out . 0 8/11/2018
I need the formula for figuring kbtvd while drilling horizontal hole 0 2/10/2017
Mud Motor Failure 0 2/11/2016
HDD Cost Estimating 0 7/28/2015
does any one has this book "Directional drilling By T. A. Inglis" plz help me if someone has it... i need it. 0 4/10/2015
How do I find kbtvd? Say i have a: MD/ 11,303' INC./ 92 degrees Azimuth/ 191.1 Vertical section/ 613.6' 0 7/4/2014
 
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