Page | 115
21. l nn ng fo M n mum sk
21.1 Designing the wellpath
The well planner has to consider all of the following criteria when designing the original wellpath;
a) Is the design drillable in the formations it encounters? b) Are the doglegs practical from a Torque and Drag standpoint, drillpipe fatigue, casing wear, formation damage, the potential for positioning ESPS or other dogleg dependent completion equipment? c) Does the design hit the target with confidence? d) Does the design avoid other wells safely and avoid geo hazards?
Once the well plan has been created the first time, it will only be a geometrical solution which may need reviewed in the light of experience.
Figure 105: Minimum risk planning wheel.
Made with FlippingBook flipbook maker