seabed
Definition Continental Shelf (CS) refers to the part of the seabed sloping gently between the coast and the deep ocean. Geographically and legally the definition of the Continental Shelf is different from the Exclusive Economic Zone (EEZ) Comments The Continental Shelf is the sub-sea extension of the continent where the waters are still shallow, between 150 […]
Definition Pipelay Vessel or Pipe Laying Vessel refers to the vessel used by the offshore oil and gas industry to install subsea all the connecting infrastructures such as pipelines, umbilicals or electrical cables Comments These subsea infrastructures may be installed to connect floating units on the surface to the seabed, or from shore to floating […]
Definition Umbilical refers in the oil and gas industry to the connections used offshore between the subsea equipment and platforms or floating production units and enabling the control from the surface. The umbilicals are made of steel or thermoplastic to be flexible and in the same time to resist to operating conditions. Comments Umbilicals provide control, power, […]
Definition Tie-back in the offshore oil and gas upstream activities refer to the connection of additional risers to the floating vessel or platform. Comments Originally the offshore oil and gas industry used to focus on large fields that could be explored and produced in drilling strait below the floating vessel or the platform. But the high […]
Statoil validated concept for $4 billion Dagny and Eirin oil and gas fields development Partners and actual interests in Dagny are split between: – Statoil 58.5% – ExxonMobil 33% – Total 6.5% – Det norske oljeselskap 2%. The final distribution of ownership interests will be subject to negotiations in the period leading up to […]
Statoil, ENI and Petoro expect more to come from Skrugard and Havis exploration The Skrugard and Havis fields are located 5 kilometers from each other at a vertical depth of 1740 meters below sea level at a water depth of 388 meters in the PL532 licence area which was awarded in 2009 in connection with the […]
Definition A Riser is a pipe carrying up the subsea oil and gas from the wellheads on the seabed to the floating unit on the surface. The risers may be used for drilling or production purposes. Comments Drilling risers are categorised into two types: – Marine drilling risers used with subsea blow out preventer (BOP) and generally used […]
Definition FSO is the acronym of Floating Storage and Offloading used to describe the offshore operation between the oil and gas processing and the export to the shore by pipeline or shuttle tankers. Comments Originally, all the offshore platforms used to sit on the seabed, but as exploration and production moved to deeper waters and more […]
