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Equivalent Circulating Densities effect

Equivalent Circulating Densities effect, or ECD, brings significant costs to a conventional drilling project. As soon as drilling starts, the bottom-hole pressure (BHP) is affected. With conventional drilling, numerous casing strings and changes to mud weight have to be made to compensate for ECD. The drilling process must be halted each time to allow these procedures to take place – a costly, time-consuming process.

With the EC-Drill® Managed Pressure Drilling system, BHP can be accurately controlled by manipulating the level of mud in the riser. BHP can be maintained just above pore pressure or just below fracture pressure as required – change the mud level in minutes, not the mud weight in hours, with EC-Drill®.


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Find out more about EC-Drill® and how it reduces ECD effect

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