![]() ![]() Using a combination of the two will lead to additional expenditures when constructing wells, but the findings in this thesis indicate that such a combination will bring significant value to certain drilling operations, provided careful candidate selection: It has been found that the methods are complementary, provided that modifications are made to certain rig components. Managed Pressure Casing Drilling The case study shows that out of these alternatives, the designed well can only be drilled using Managed Pressure Casing Drilling, though no consideration has been made with regards to limitations in well section length in this scenario torque and drag, among others, are likely to limit the achievable well section length.A hydraulic model was developed, combined with field data pertaining to a developed field on the Norwegian Continental Shelf, and used to model the pressure losses along a designed wellbore for four different cases: Consecutive layers with different pressure regimes This thesis sets out to evaluate the benefits and limitations of combining these two methods into a method dubbed Managed Pressure Casing Drilling, and if it enables drilling wells that were previously thought undrillable.Formations with very narrow mud windows. ![]() Examples of candidates thought to benefit from using this combination include: It is thought that a combination of the two might yield additional benefits. It has been proven through numerous field applications that both of these technologies bring value to drilling operations when used in the appropriate situations. The last decade has seen the advent of new unconventional drilling methods, such as Managed Pressure Drilling and Casing/Liner Drilling. ![]()
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