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3/4 of the Wells Drilled Last Week are not Vertical
Directional drilling is the science of deviating a well bore along a planned path to a target located a given lateral distance and direction from vertical.
Casing is an important assembly in drilling engineering which is fixed by cementing. There are different kinds of casing acting different role while drilling.
Conductor Pipe - prevent from caving in
aquafer
Surface casing - protect aquifer
Intermediate casing - prevent blowout
Production casing - help produce oil efficiently
1. What is Directional Drilling?
2. Why We Use Casing?
3. What are the Problems of Conventional Casing While Directional Drilling?
4. What Tools and Methods can be Used to Solve the Problems?
Method
Directional Casing while Drilling uses the
Rotary Steerable System (RSS)
Tools
PowerDrive X6 push-the-bit Rotary Steerable System or PowerDrive Xceed point-the-bit Rotary Steerable System
Reference
Schlumberger Service and Products
http://www.slb.com/services/drilling/directional_drilling.aspx?entry=ad_google_dm&gclid=CKmqofmXyLMCFcsWMgod8CQA_A
Directional Casing While Drilling
http://www.slb.com/services/drilling/specialty_drilling_applications/casing_drilling/directional_casing.aspx