Facilities Engineering *1st draft

By: Saha

Development options Proposal Development Option Estimated Cost (Mil)

A FPSO converted to Tanker Hull 300 kbo

223.75+ ( 213.52 Lease rate)

B FPSO with pipeline to Berlian Field

261.45

C FPSO with pipeline to PCOT 282.45

D CPP with pipeline to Berlian 240.95

E CPP with pipeline to PCOT 261.95

F Wellhead Platform with pipeline to Berlian Field

220.75

G Wellhead platform with pipeline to PCOT

241.75

Berlian East Satellite Platform

20 km 8” Crude Pipeline

Berlian CPPPCOT

20 km 12” Crude Pipeline

Development option: Proposal F

Facilities are required for :

• supporting production offtake

• gathering produced fluids

• processing and treatment

• evacuation or disposal

• storage and distribution

• Surface facilities design is based on :

• fluid flowrates

• fluid pressure and temperature

• fluid properties

• product quality required

Production Design Rate

• Maximum Oil Rate 40 Mbpd • Maximum Gas Rate 55 MMscfd • Maximum Water Rate 55 Mbpd

Platform facilities modules

Process System: Process Flow Schematics

Oil And Gas Processing System

Separation System

• Scrubbers - 2 phase separation, to recover liquid carried over from production separator or due to condensation

• Liquid loading smaller. Application: upstream of mechanical equipment like compressors. Normally vertical

• Filter separators - designed to remove solid and liquid mists particles less than 10 micron

• Vortex breaker – To stop funneling action, to prevent gas from escaping.

• Foaming - causes less efficient separation. To add anti foam agent.

• Critical velocity - cannot be exceeded, otherwise droplets of liquid in gas do not have the time to drop out.

• Residence time not enough - vapor bubble has no time to rise from the liquid-vapor interface

• For large volume of production, normally two or more parallel trains of separation. Avoid full shutdown for repair or maintenance

• Test separators - periodic measurement for a single well, discharged back to common streams.

Gas Handling

• The gas which is naturally produced or separated from the oil may not be transported by pipeline for sales.

• Other applications of natural gas:1.Injected back into the reservoir to help maintain pressure.2.Assist wells to flow known as gas lift.3.Fuel gas.

Utilities System

• Firewater Systems• Instrument Air System• Starting Air Systems• Seawater & Potable Water System

Back up

Back up• This method is using the engineering formula to reconfirm the method 1. • • Given Q= 38.5 kbd and V= 6 ft/s .• Using formula below: • • d = (0.012Q/V)1/2

• d = (0.012 x 38 500 / 6)1/2

• d = 8.77 inch• • Percentage error• • For 10 inch pipeline size • Percentage error (%) = (10 – 8.77)/8.77 x 100 • = 14.02 %• For 8 inch pipeline size• Percentage error (%) = (8.77 – 8)/8.77 x 100 • = 8.77 %