under-balanced drilling

READ: In drilling operations, gases brought from the well by drilling fluids usually exert negative influence on mud properties and create safety hazards. In under-balanced drilling, sticking has become a frequent occurrence deep in the well. Vaccum degasser is very helpful in tackling the adhesive sticking resulted from over-dense drilling fluids. In drilling operations, gases brought from the well by drilling fluids usually exert negative influence on mud properties and create safety hazards. In under-balanced drilling, sticking has become a frequent occurrence deep in the well. Vaccum degasser is very helpful in tackling the adhesive sticking resulted from over-dense drilling fluids. Roles That Vaccum Degasser Plays in Under-balanced Drilling: 1. It is proved by the in-situ experiment t