Metering System

In today’s production and distribution of oil and gas anywhere in the world, the products are transacted from a seller to a buyer. In this transaction both seller and buyer agree upon a measured products passing through a facility commonly called as Custody Metering System.

The word custody is there because transaction must be according to acceptable metrological standards where both seller and buyer can accept the terms and conditions of delivery according to prevailing laws and regulations that govern the transaction. Therefore metering system finds its significance as a central part of any oil and gas station facility.

Gas Feeding Plant

Prior to energy generation into a specific process, a system that helps the energy conversion to take place is known as gas feeding system. Gas Feeding System normally consists of a series of pipelines and some measuring instruments and mechanical equipment such as valves and fittings, control valves or regulating systems and associated instrumentation. At the outlet of gas feeding system, we may find gas turbine, boiler, gas engine, burners etc.

Gas Conditioning System

After extracted from the well, prior to transportation, oil or gas shall be cleaned and free from unwanted substances. Mechanically, it must be cleaned prior to entering into its downstream process. This system can be scrubber system, knock out drums, coalescing system, dehydration unit etc. Chemically, if it contains unwanted material such as CO2, H2S for example, the products shall be chemically treated. Basically, the gas conditioning system will be required to ensure that the product meets with end processes.

Pressure Regulating System

Often times, the end process pressure is far less than the upstream pressure. In order to protect the downstream lines, the pressure regulating station is built in order to make sure that the upstream pressure meets with the process pressure requirement.

The essential part of this system is Pressure Regulator or Control Valve. It is common that the pressure regulating station is completed with Emergency Shutdown or Shut Off System to protect the downstream process from over pressure.

Gas Detection System

Natural gas is highly flammable gas and its presence could ignite fire and invite fire hazard. Natural gas is colorless and odorless, therefore it is not easily felt when there is a leak in the gas plant. In order to detect any potential of gas leak, gas detection system is installed.

When there is any leak, the gas detection system will send alarm to the control room and a series of action to find and stop the leak is called.

Gas Receiving Station

Gas receiving station is a receiving facility and normally away from the gas source. It is often called as Offtake Station since it is a bulk station before the gas is distributed into several customers. Essentially, gas receiving station is metering station. But since it serves as bulk station, several supporting facility which include gas conditioning plant, regulating station, analyzing station and so on.

CNG Station

CNG station compresses the gas to about 250 bars or 3650 psi. This is normally the station for vehicle running on CNG as its fuel or becomes the station for filling up CNG cylinder trailer that caters for small industries which are not served by gas pipeline grid.

Marine Applications

Measurement accuracy is essential for the sale, purchase and handling of petroleum products. It reduces the likelihood of disputes between buyer and seller and facilitates control of losses. Accurate measurement demands the use of standard equipment and procedures.

Although automatic level gauging systems are in widespread use in the petroleum industry for the measurement of petroleum liquids in storage tanks, manual tank gauging is still widely applied as the normal technique for level measurement in non-pressurized and vapour tight tanks. It is highly accurate provided the correct procedures are carefully observed.

Manual tank gauging is the method that shall be applied for the calibration (setting) and periodic verification of automatic level gauging (ALG) systems. It is also normally selected as the reference method for the measurement of the level of liquid in a tank, should a dispute arise between the parties in a commercial transaction.