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Keywords: Unit vector
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Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 21–24, 2008
Paper Number: SPE-113883-MS
... → = sin θ j → − cos θ k → and q → = cos θ j → + sin θ k → are unit vectors as depicted in Fig(1) . Considering a differential pipe element dx , its total linear momentum and angular momentum are (3) P → ( x , t ) = m p v → ( x...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, November 11–14, 2007
Paper Number: SPE-110014-MS
... are contained on the geometric surfaces defined by a torus or cyclide. These geometries explain why the explicit solutions exist, opening up possibilities for obtaining solutions to the more complex cases. trajectory design calculation plane toolface well planning final toolface Unit vector cyclide...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 5–8, 1997
Paper Number: SPE-38617-MS
... for the design procedure. drilling operation constraint calculation Unit vector casing and cementing actual tension effective tension spe 38617 casing design Reach Well friction factor optimization Upstream Oil & Gas trajectory load line pipe inclination society of petroleum engineers...

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