OFFSHORE OIL AND GAS STRUCTURE

8/12/2019 OFFSHORE OIL AND GAS STRUCTURE

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Ade MashediSemarang, 12 April 2014OFFSHORE DAY Universitas Diponegoro 1


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Global Oil & Gas ProductionOil and Gas Production FacilitiesOffshore Facilities

Life Cycle in E&P IndustriesWorking in Oil & Gas Industries

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Global Oil Gas Production

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Offshore 35% of world production Deepwater 3% of production in 2002, 6% in 2007, 10% by 2012 After 2012, deepwater is the only sector to continue to grow.

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Cekungan Sudah Berproduksi (50)

Cekungan telah ditemukan HC, belum berproduksi (7)

Cekungan belum dieksplorasi (22)

Cekungan telah dibor, belum ditemukan HC (7)

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Oil Gas Production Facilities

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All fluid petroleum is confined underground at high pressure, which provides a natural drive forproduction, rather like artesian water supplies

During the early stages of production, getting these fluids to the surface safely means allowing acontrolled release of fluids under pressure. To prolong extraction later in the life of an oil or gas

field, it usually becomes necessary to maintain the pressure underground by injecting pressurizedwater or gas, or both, into the reservoir. When production begins, during primary recovery, pressurized fluids within the reservoir rise up

the borehole and reach the surface. As the pressure is released, any gas dissolved in the oil comesout of solution, to rise and escape along with the oil. As production continues, the pressure of thepetroleum remaining in the reservoir begins to fall.

This fall in pressure and the loss of dissolved gas increases the viscosity of the oil, so that it willnot flow so readily.

Typically only 5 30% of the petroleum in the reservoir is brought to the surface during the primaryrecovery stage. 11


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Offshore Facilities

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Offshore platforms are used forexploration of Oil and Gas fromSeabed and processing . The First Offshore Platform was installed in 1947 off the coast ofLousiana in 6 m WD .

Today there are over 7 ,000 offshoreplatforms around the world in water depths up to 1, 850 mPlatform Size depend on facilities tobe installed on top e.g Oil Rig,living quarters, Helipad etcClassification of water depths:


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Facilities are tailored toachieve and spacesavingIncorporates processand utility equipment Drilling Rig Gas Compressor Gas Turbine Generators HVAC InstrumentationAccommodation foroperating personnel

Crane for equipmenthandlingHelipad

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Subsea Control System


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Life Cycle in E P Industries

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Working in Oil Gas Industries

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Documents

OFFSHORE OIL AND GAS STRUCTURE