19.1.2 References in this chapter

Accuracy Prediction for Directional Measurement While Drilling
Hugh Williamson, SPE-67616
Prediction of Wellbore Position Accuracy When Surveyed with Gyroscopic Tools
Torgeir Torkildsen, Stein Harvardstein, John Weston, Roger Ekseth, SPE-90408
Quantification of Depth Accuracy
A.Brooks, H Wilson, A.Jamieson, D.McRobbie, S.G.Holehouse SPE-95611
ISCWSA MWD Error Model Revisions
S. Grindrod, rev6 8/10/09 available at www.iscwsa.org
MWD Toolface Independent Error Terms
S. Grindrod CDR-SM-03 Rev4 November 2009 available at www.iscwsa.org
Confidence Limits Associated with Values of the Earth’s Magnetic Field used for Directional Drilling
Susan Macmillan, Allan McKay, Steve Grindrod SPE/IADC-119851
A Comparison of Collision Avoidance Calculations
Shola Okewummi, Andrew Brooks SPE/IADC-140183
Borehole Position Uncertainty; Analysis of Measuring Methods and Derivation of Systematic Error Model Chris J.M. Wolff and John P. DeWardt SPE-9223

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