Directional drilling is much more than simply selecting a wellpath and hole angle. It includes selecting the most appropriatesurvey techniques, defining the best control tools, researchingapplicable government regulations, and gathering pertinentgeological data. By considering the following aspects explain howthese factors affecting your directional drilling choice to apply aproper technique to achieve your target.
i. Reasons for use directional drilling technique.
ii. Problems associated with directional drilling.
iii. All variables required for directional wellplanning.
iiii. Oil well Production.
v. Formation hardness
vi. With the help of sketch drawing, the Drill stringConsiderations plays an important role in the directional drilling.?
vii. Errors associated with taking a survey.
viii. With the help of sketch drawing, techniques are used forallowing the wellbore path to drift into the target? Â
deep vs shallow kickoff points.
c) Discuss bit features affect directional drilling andexplain why?
d) Calculate the measured lengths, vertical depths andhorizontal displacements of each section of the following S-shapedwell designed to avoid a salt dome, using the following data.
Kick-off depth = 1,200 ft
Build-up rate = 2.0 degrees/100 ft
Drop-off rate = 3.5 degrees/100 ft
TVD at end of drop-off section (V4) = 8157 ft
Total horizontal displacement (D3) = 2136 ft
Final inclination angle in reservoir = zero degrees
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