A cement plug can be used to shut off a downhole flow. However, this generally involves abandonment of the well and loss of most of the drilling tools. It is also likely that the string will become plugged after pumping the cement, precluding any second attempt if the first should not succeed. Therefore, cement plugging … Cement Plugs

A barite plug is a slurry of barite in fresh water or diesel oil which is spotted in the hole to form a barite bridge that will seal the flow and allow control of the well to be re-established. The plug is displaced through the drillstring and, if conditions allow, the string is pulled up … Barite Plugs

If secondary control cannot be properly maintained, emergency procedures can be implemented to prevent the loss of control. Two common procedures involve the use of barytes plugs and cement plugs. 1. Barytes plugs A barytes plug is a slurry of barytes in fresh water or diesel oil which is displaced through the drillstring. If conditions … Well Control – barytes and cement plugs.