Ade Mashedi Semarang, 12 April 2014 OFFSHORE DAY – Universitas Diponegoro 1

Global Oil & Gas Production Oil and Gas Production Facilities Offshore Facilities Life Cycle in E&P Industries Working 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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In TCF 7

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’ for production, rather like artesian water supplies

• During the early stages of production, getting these fluids to the surface safely means allowing a controlled 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 pressurized water 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 comes out of solution, to rise and escape along with the oil. As production continues, the pressure of the petroleum 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 will not flow so readily.

• Typically only 5–30% of the petroleum in the reservoir is brought to the surface during the primary recovery stage. 11

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Offshore Facilities

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Offshore platforms are used for exploration of Oil and Gas from Seabed and processing.

The First Offshore Platform was installed in 1947 off the coast of Lousiana in 6 m WD.

Today there are over 7,000 offshore platforms around the world in water depths up to 1,850 m

Platform Size depend on facilities to be installed on top e.g Oil Rig, living quarters, Helipad etc

Classification of water depths: ◦ <350 m – Shallow Water ◦ <1500 m – Deep Water ◦ >1500 m Ultra Deep Water 25

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Facilities are tailored to achieve and space saving

Incorporates process and utility equipment ◦ Drilling Rig ◦ Gas Compressor ◦ Gas Turbine Generators ◦ HVAC ◦ Instrumentation

Accommodation for operating personnel

Crane for equipment handling

Helipad

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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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