WHEN a fluid escapes from a contracted opening, it may form a column, which throughout the greater part of its length has the same sectional shape as the opening. This kind of column may be called ...

Instabilities in fluid systems often produce undesirable effects — for example, standing up in a canoe can induce buoyancy instabilities that capsize the boat. However, instabilities can prove highly ...

Techniques that consider all the chemical and mechanical aspects of displacing drilling fluid can benefit dramatically the economics and effectiveness of well completions in deep water. Three critical ...