A Down Hole Blow Out Preventer (DHBOP) for the downhole control of gas kick has been developed. Tests performed on an onshore drilling rig with simulated gas kick have demonstrated that the tool can effectively seal off the borehole, while mud of adequate density (to control the borehole pressure) is circulated above the Down Hole Blow Out Preventer.

You can access this article if you purchase or spend a download.