PCB 3073 PRODUCTION ENGINEERING II
OFFSHORE STRUCTURES
MAY 2013 SEMESTER
Lecturer: Dr. ALIYU ADEBAYO SULAIMON
Group members:
No | Name | ID | 1 | LUIS FAUSTINO EDU ANGUE | 13973 | 2 | MEHDII NIKFEKR | 15744 | 3 | ELAMIN MOHAMED ELAMIN | 15795 | 4 | UMOH ETIMBUK BASSEY | 15649 | 5 | SHERZOD KAMILOV | 14181 |
This assignment is based on a comparative analysis of offshore structures.
FIXED PLATFORMS
BRIEF DESCRIPTION:
Fixed platforms, like the name imply are platforms that are fixed to the sea bed. The legs of these platforms are made of concrete or steel or in some cases both concrete and steel. These legs extend all the way to the bottom of the sea. It could either be fixed or weighed down to the sea floor with heavy concrete structures. In the case where it is weighed down by concrete structures, the heavy concrete structures make the legs so heavy that it can just sit on the sea floor without necessarily being fixed.
Steel Jackets used for fixed platforms.
These platforms could be manned or unmanned, depending on how big it is and its functions. The manned platforms are usually much bigger and contain a living quarters for the workers, on the other hand, the unmanned ones are usually small and are connected to the manned ones. Unmanned platforms are only visited when there is a problem or work over has to be done. Fixed platforms are usually designed for long term use.
WATER DEPTH:
Fixed platforms are usually used for shallow water to fairly deep water. The water depth for these platforms ranges from 500ft to 1500ft. This is because it is not economical to build legs long enough for extremely deep or ultra-deep water.
A Fixed platform in the North Sea (Photo Credit: wiseGEEK).
PRODUCTION CAPACITY:
Fixed platforms depending on the size can handle up to 50, 000 bbl/d. The extracted fluids from the reservoir go up to the platform via risers.
STORAGE CAPACITY:
In the case where a fixed platform
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