Drilling Mud Weight Losses

    In this earlier post we talked about scaling, which can cause salts to drop out of the completion fluid and the resulting loss of well control weight in a high temperature workover situation. Drilling muds can also lose weight unexpectedly when solids...

Supersaturated Brine at High Temperature

Brines are commonly used for well control in completions and workover because they have a few beneficial qualities. Shale protection: When weight is not needed, small amounts of chloride salts such as KCl or a generic salt brine can be added to the water. Fresh water...

Overbalance with Preexisting Fracs

In safety training, especially well control, can there be too much of a good thing? For the constant bottom hole pressure well control method–there is when weighting up mud to kill a kicking well. EAGLE FORD SHALE The Eagle Ford is a shale and, as such,...