1. Wellbore Trajectory
Example Calculation

2. Simulator Outputs
Figure 1

3. Dogleg & Axial Force Interactions
9000 lb.
Dogleg & Axial
Force Interactions
1.25deg/12.5’
Angle with perfectly straight
10 deg/ 100’
Med Radius
Just Above Small Pump
0.35 * 390 = 137 lb
2*9000 * sin (1.25deg)
= * 0.022
= 390 lbs
390 lb / 40lb per guide max =
10 guides per rod
9000 lb.
Figure 2

4. Inclined, but straight Gravity Forces Incl N f * A 30 32 6.4 49.0 50
9.8
31.3 70 60 12
9.9 79
62.8
12.6
Inclined, but straight
Gravity Forces
N = 64 * sin(Incl)
* CoeffFrict = 0.2, steel-on-steel
f = N * CoeffFrict A
A =[ 64 * cos(Incl)] – f
(effective rod weight f N

5. ‘Morphing’
Downhole Cards
Peak Wear
Point in Tbg

6. Existing Wellbores
Try smaller & lighter high strength rods

7. Existing Wellbores Try smaller & lighter high strength rods
Smaller Pump

8. Existing Wellbores Try smaller & lighter high strength rods
Smaller Pump
Rod and Tubing rotators

9. Existing Wellbores Try smaller & lighter high strength rods
Smaller Pump
Rod and Tubing rotators
Rod Guides with Supplier Design Input

10. Existing Wellbores Try smaller & lighter high strength rods
Smaller Pump
Rod and Tubing rotators
Rod Guides with Supplier Design Input
Batch/Continuous Corrosion Inhibition

11. Existing Wellbores Try smaller & lighter high strength rods
Smaller Pump
Rod and Tubing rotators
Rod Guides with Supplier Design Input
Batch/Continuous Corrosion Inhibition
Spray Metal Rod Couplings

12. Desirable Wellbore Trajectory Beam Pumping Planning
Avoid even small doglegs near surface where axial loads are high.