Changes

===“Kicking off” a directional well===

===“Kicking off” a directional well===

In directional wells, the wellbore will be deviated at a preselected depth known as the ''kick-off point''. An example of a directional well plan called “build and hold” is shown in [[:file:wellbore-trajectory_fig3.png|Figure 3]]. A borehole inclination of at least 15° is desirable since it is harder to maintain directional control in holes with shallower deviation angles (Adams, 1985). However, wells with higher deviation angles can present operational problems (such as running wireline logs to total depth).

In directional wells, the wellbore will be deviated at a preselected depth known as the ''kick-off point''. An example of a directional well plan called “build and hold” is shown in [[:file:wellbore-trajectory_fig3.png|Figure 3]]. A borehole inclination of at least 15° is desirable since it is harder to maintain directional control in holes with shallower deviation angles ([[Adams, 1985]]{{citation needed}}). However, wells with higher deviation angles can present operational problems (such as running wireline logs to total depth).

====Whipstock method====

====Whipstock method====