05.07.2009

Since gases are compressible, this is a mechanical device that increases the pressure of gas by reducing its volume and thus helping its transmission through a pipe

Compression is utilized to enhance production from low pressure gas reservoirs. Compression is also used extensively in gas processing operations to aid in the recovery of natural gas liquids

To ensure that the natural gas flowing through any one pipeline remains pressurized, compression of this natural gas is required periodically along the pipe. This is accomplished by compressor stations, usually placed at 40 to 100 mile intervals along the pipeline. Any permanent combination of facilities which supplies the energy to move gas at increased pressure from fields, in transmission lines, or into storage. >

CNG is natural gas under pressure which consists primarily of methane (85-95%), with trailing amounts of ethane, propane, and butanes used as an alternative cleaner fuel for vehicles. CNG cars are abundant in Argentine, Brazil, India, Pakistan, Italy, Iran and the US.

The Comprehensive Nuclear-Test-Ban Treaty is a cornerstone of the international regime on the non-proliferation of nuclear weapons and an essential foundation for the pursuit of nuclear disarmament. Israel signed the treaty in September of 1996, but has yet to ratify it. As part of the global verification regime, two seismic stations were built. In addition, a National Data Center and radio nuclide analytical laboratory were built at the Soreq NRC >

The CAGR is an average growth rate over a period of a few years. It is a geometric average of annual growth rates. The world’s gas reserves increased at a CAGR of 1.9% between 1996 and 2007 according to BP

Natural gas is a combustible mixture of hydrocarbon gases.

While natural gas is formed primarily of methane, it can also include ethane, propane, butane and pentane.

The composition of natural gas can vary widely, but is often composed of the following: methane (70-90%), Ethane, propane (0-20%), Butane, Carbon Dioxide (0-8%), Oxygen (0-0.2%), Nitrogen (0-5%), Hydrogen Sulphide (0-5%) and sometimes traces of other rare gases (A, He,Ne,Xe). In its pure form it is almost pure methane. Methane is a molecule made up of one carbon atom and four hydrogen atoms, and is referred to as CH4.

When you talk about gas composition you are in fact referring to its calorific value