Once a well has been drilled, if it is to become a production well, the well must undergo completion. While drilling a well cuts through the rock formations and allows drilling engineers to reach the ...

P.E. Pilkington Conoco Inc. Houston Evaluating cement between two strings of casing can be a problem. The signal from the outer string of casing can interfere with amplitude measurement if the inner ...

Dilution-based dual-gradient drilling (DGD) reduces casing strings and drilling costs while increasing hole size at total depth by injecting mud down an artificially-created annulus with a different ...