Alderley

Technical excellence: delivered

Application NotesNatural Gas Metering

Project Name:Berantai Field Development

Location:Block PM 309 of the South China Sea, approx. 150km offshore Malaysia

EPC Contractor/Consultants:Petrofac International (UAE) LLC

End User:Petrofac/Petronas

Scope of ApplicationThe scope of supply consists of a gas fiscal metering system, supplied to the Petrofac/Petronas joint venture for use in the development of the Berantai Field offshore development in Malaysia.

The FPSO based metering package has two 50% streams for export (flow rate of up to 200,000 kg/h) and a single 100% stream for import. All streams utilise ultrasonic meter technology. The package also includes the associated control and supervisory systems, plus an analyser shelter c/w gas chromatograph, dew point analyser, oxygen analyser and a separate auto and manual sampling system.

Alderley also supplied a crude oil custody transfer metering system to the Berantai Project.

Berantai Gas Field

Alderley

www.alderley.com

Rev. 06.01.17

Applicable Standards

AGA 5: Fuel Gas Energy Metering

AGA 8: Compressibility Factor of Natural Gas and Related Hydrocarbon Gases

AGA 9: Measurement of Gas by Multipath Ultrasonic Meters

AGA 10: Speed of Sound in Natural Gas and Other Related Hydrocarbon Gases

ISO 5024: Petroleum liquids and gases – Measurement – Standard reference conditions

ISO 5168: Measurement of fluid flow – Estimation of uncertainty of a flow-rate measurement

ISO 6143: Gas Analysis – Determination of composition of calibration gas mixtures

ISO/DIS 17089: Measurement of fluid flow in closed conduits – Ultrasonic meters for gas – Part 1: Meters for

custody transfer and allocation measurement

• Single skid of compact design 10.0m L x 2.5m W x 4.0m H

• 2 x 50% Export streams, 1500# RTJ 8” ultrasonic flow meters (200,000 kg/h)

• 1 x 100% Import stream, 1500# RTJ 2” ultrasonic flow meter (2,800 kg/h)

• 8 x 8” Actuated/manual main line ball valves

• 4 x 2” Actuated/manual main line ball valves

• Small bore valves for drain, vent connections and transmitters/gauge isolation

• Pressure and temperature instrumentation

• Analyser shelter c/w gas chromatograph, dew point analyser, oxygen analyser and separate auto and manual

sampling system

• Control system including S600+ flow computers

Main Equipment