High-Side Toolface 1
High-Side Toolface 1 :
(n). Drilling. Toolface angle used for deviated wells. High-side toolface is the angle of the borehole survey instrument within the wellbore measured clockwise relative to up and in the plane perpendicular to the wellbore axis; the high side (maximum build), maximum right, low side (maximum drop) and maximum left directions have high-side toolface angles of 0°, 90°, 180° and 270°, respectively. Syn: Gravity Toolface. Alt. form: high side toolface, highside toolface. See: Magnetic Toolface, Toolface
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