Drilling Directional Wells Underbalanced The main justifications for drilling a directional well underbalanced are to (1) reduce drilling costs, and/or (2) improve productivity. The combination of horizontal/multilateral and UBD technology is a relatively new one, and which has been explored more in international fields (especially the Middle East), than in …

One of a drilling fluid's primary functions is to remove drilled cuttings and transport them to the surface-in other words, to clean the hole. The term carrying capacity ...

Horizontal drilling is the process of directing part of a well course through a reservoir such that its inclination angle is approximately 90° from vertical.

Directional Drilling Tools and Techniques: The planning, equipment and procedures involved in drilling non-directional wells also apply ...

the exact causes of wellbore deviation are unknown, we can list the following as contributing factors: • Formation type ( lithology, ...

Directional drilling is the practice of accessing an underground oil or gas reserve by drilling in a non-vertical direction. Directional...

After completing this topic "Cement Evaluation", you will be able to: • Summarize methods for evaluating quality of a cement bond.

After completing this topic "Plug Cementing", you will be able to: • Define plug cementing and associated terms...

After completing this topic “Squeeze Cementing", you will be able to: • List the reasons for squeeze cementing.

After completing this topic "Primary Cementing", you will be able to: - Define primary cementing and associated terms.