Calculation Of Inclination

Guide Oil DrillDirectional Drilling Calculation

Target"T"

HORIZONTAL DISPLACEMENT:

= _5730_ x (1 _ cos „) + (AHD - K.O.P. - IfiQfi-) x sin a B.U.R. V ' V B.|J.R.

TRUE VERTICAL DEPTH;

= K.O.P. +-5Z3Q- x sin a + (AHD - K.O.P. - 100(Mxcosu B.U.R. B.U.R.

Stove Pipe Drilling

30" Stove pipe

20" Casing

Top rotary table, RT (used as reference while drilling)

Local datum (always refered to, the only permanent reference)

Top 20" casing head housing, CHH (top bottom flange) (often used as reference by the Production Departement as it remains the whole life time of the well).

30" Stove pipe

20" Casing

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