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Drilling Optimization Training

Online, Complex Well Drilling Course

Industry-leading course now available online for anyone, anywhere, anytime!

Re-engineered from the ground up to take advantage of the flexible learning opportunities offered by online training.


Test your ERD knowledge

Trained by industry leading experts

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Why Train?



  • Understand your knowledge level with built-in assessments before and after the course.

24/7 Access

  • Updated content based on the latest methodologies and techniques for drilling extended reach and complex wells.

Real life examples

  • Reinforce your knowledge using real life case studies and examples to illustrate key concepts.

Course created by industry leading experts

We find that well educated teams make better decisions when the inevitable bump in the road occurs when drilling and completing extended reach, complex and high angle wells.

Stewart McGregor, Merlin ERD Technical Development Director


Highly Recommended

  • 5.0 rating
Course Overview

Painful experience has shown that even the most robust drilling programme can fail through incorrect implementation techniques.

Due to the increased challenges and numerous procedural revisions associated with high angle wells, educating personnel on how to identify issues before they become problems is crucial in delivering a successful deviated well.

Invest in yourself, your team and ultimately your results by attending Merlin ERD's Horizontal & High Angle Operations & Engineering Training Course.

What Will I Learn?
  • How to determine the maximum reach from your location
  • Key planning considerations to delivering trouble free wells
  • Root cause of problems encountered in high angle wells
  • Identifying minimum equipment specifications for ERD projects
  • What others are doing around the world to assure success
  • Latest tools and techniques used to reliably deliver ERD projects
  • How to minimise downtime due to 3rd party tools

Train with us anywhere in the world

ERD Quiz

Test your knowledge of ERD with these 10 multiple choice questions

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Company Name
1. On an ERD well, after the 12-1/4” hole section was drilled to TD (20,000 ft / 6,000 m), a clean-up cycle of 5 x bottoms up was performed at 1,000 GPM (3,770 LPM) and 80 RPM. Shakers are clean of material. Based on the clean-up parameters used can you assume the hole is clean for safe tripping?
(1 correct answer)
2. What part of the "S-shape" well normally has the highest rate of casing wear? (1 correct answer)
3. Where in the well will tortuousity or high dog legs lead to the highest surface torque when the bit is rotated at planned well TD? (1 correct answer)
4. 9-⅝”, 43.5, L-80, VAM TOP Casing is selectively floated on a high angle well (12-1/4” HS 24,000 ft / 7,300 m MD; 15,000ft / 4,573 m TVD). 11.0 ppg / 1.32 s.g. oil based mud, 73° Inclination. Which of the risks below would be of most concern whilst running the casing? (1 correct answer)
5. A 12-1/4" hole section of an ERD well (75° inclination) is drilled with 1,200 GPM / 4,550 LPM & 160 RPM. There is a constant flow of cuttings on the shakers and torque & drag data follow the expected trend. What is the average cuttings bed height in the tangent section of the well? (1 correct answer)
6. During what conditions will barite sagging be the highest?  (1 correct answer)
7. In the middle of the trip out of the hole, having successfully backreamed a problematic 650ft / 200m interval, what is the next step? (1 correct answer)
8. At what frequency should torque & drag measurements be taken while drilling the second well of the development project? (1 correct answer)
9. After drilling a 12-1/4” hole section on an ERD well, 4 x bottoms up are circulated at TD with parameters above hole cleaning thresholds. After the 2nd bottoms up the shaker hand reported the decrease in cuttings to a background level, which remained the same for the rest of circulation. Is it safe to start pulling out of hole on elevators? (1 correct answer)
10. Downhole tool measurements indicate possible whirl vibration while drilling. Select the best course of action. (1 correct answer)