Managed pressure drilling (Petroleum engineering)

found: Work cat.: 2008022305: Managed pressure drilling, c2009:ECIP galley (Managed pressure drilling (MPD) is a method of drilling in a balanced or overbalanced state while threading the pressure limit between pore pressure or well-bore stability and fracture pressure. MPD seeks to avoid a well kick)

found: Wikipedia WWW site, May 22, 2008(Managed pressure drilling, MPD; is defined by the International Association of Drilling Contractors (IADC) as "an adaptive drilling process used to more precisely control the annular pressure profile throughout the wellbore." The objectives of MPD are "to ascertain the downhole pressure environment limits and to manage the annular hydraulic pressure profile accordingly.")