Managed pressure drilling
Managed Pressure Drilling is a growing and expanding market as drilling becomes more complex, uncertain and difficult. Conventional drilling in demanding reservoirs drives up non-productive time, risk and ultimately cost. MPD enables the drilling of reservoirs with narrow drilling windows (pore/fracture pressure windows) where conventional drilling fails.
In MPD, the control head represents the barrier which seals off the annulus pressure and is naturally one of the most critical components. Seal leakage means failure of the pressurised closed loop system and consequently loss of pressure integrity.
Siem WIS's control head system, the PCD, provides greatly improved safety and redundancy in MPD operations by virtue of the patented multi-seal barrier with continuous condition monitoring. Read more about our products and services.
“Managed Pressure Drilling (MPD) is an adaptive drilling process used to precisely control the annular pressure profile throughout the wellbore.
The objectives are to ascertain the downhole pressure environment limits and to manage the annular hydraulic pressure profile accordingly.
It is the intention of MPD to avoid continuous influx of formation fluids to the surface. Any influx incidental to the operation will be safely contained using an appropriate process”
IADC definition of MPD