Directional Casing While Drilling Assessment


Mohamed Samy, 
Drilling & Workover engineer, Dublin Pet. LTD

Prof. Said Salem, Prof. Mohamed S. farhat,
Petroleum Engineering Department, Faculty of petroleum & Mining Engineer, Suez University.

Prof.,Ahmed Z. Nouh
Petroleum research institute, Cairo, Egypt.


Casing while drilling (CwD) is a drilling method that has been shown to lessen several drilling problems faced during drilling. This technique reduces NPT and increases drilling efficiency by performing drilling and casing wells simultaneously. The "plastering" effect has been proven to be helpful in reducing lost circulation, enhancing well stability, producing high-quality cement work, and enhancing rig floor safety. It reduces environmental carbon dioxide emissions by using smaller rigs and less fuel.