05.07.2009

STOIIP is the amount of oil believed to be originally contained in a reservoir

A tectonic process that occurs at the boundary of two converging plates, whereby oceanic crust slides below continental crust into the mantle and causes melting that results in a zone of volcanism along that boundary

A rigid metal conduit that provides the high-pressure pathway for drilling mud to travel approximately one-third of the way up the derrick, where it connects to a flexible high-pressure hose (kelly hose). Many large rigs are fitted with dual standpipes so that downtime is kept to a minimum if one standpipe requires repair

The study of the history, composition, relative ages and distribution of strata, and the interpretation of strata to elucidate Earth history

The advent of more and more deepwater discoveries brings with them significant challenges. Deeper waters mean higher pressures from not only the wells, but also from the subsea environment. A well at 1,500 meters causes an environmental pressure on the valve of 150 bar or 2,175 psi. At these depths, it is necessary not only to keep the process stream in, but also to keep the environment out. Since in addition it is necessary to ensure the equipment meets a design life of over 25 years, the technology used on the pressure boundaries and on dynamic stem sealing applications, must work first time, every time. the majority of subsea equipment is required to conform to API 6A / API 17D PR2. This type of test requires the valve to undergo 160 ambient gas cycles at the maximum operating differential pressure prior to 20 cycles each at the maximum and minimum operating temperatures also on gas

When a stress is applied to a rock, deformation may occur, depending on the rate and the amount of stress. Strain is the change in shape or volume of a body as a result of stress

A wellhead installed on the sea floor and controlled remotely from a platform, a floating production facility or land