Halliburton launches automated continuous circulation system

Halliburton released the e-cd Plus system - a new technology that automates and enhances continuous circulation connections during drilling and tripping operations. Continuous circulation provides the uninterrupted flow of drilling fluid into the well throughout the process of adding or removing drillpipe joints to the drillstring.

After connecting the e-cd Plus system to surface control equipment, a proprietary software remotely controls all steps of the flow diversion and side port connection process that is currently completed via manual human operation. The overall system maintains a small footprint and can reduce the number of rig personnel required to safely provide continuous downhole circulation.

The system also helps improve success in challenging projects such as wells with narrow pore pressure/fracture gradients by keeping bottom-hole pressure and fluid properties constant, cooling equipment in high-pressure and high temperature applications and providing continuous wellbore cleaning by movement of cuttings in extended reach wells.

On a recent project in the North Sea, an operator was previously unable to successfully reach target depth due to poor cuttings movement and wellbore stress. They deployed the automated diversion portion of the e-cd Plus system to provide continuous circulation over two well sections and approximately 6,800 ft of total open-hole drilling. The operator successfully reached total depth and cemented the liner in each section, helping eliminate the challenges that halted operation in the previous offset well.