A natural gas liquid with a low vapor pressure, compared with natural gasoline and liquefied petroleum gas. It is produced from a deep well where the temperature and pressure are high. Gas condenses as it rises up the wellbore and reaches the surface as condensate
A gas field consists of a reservoir in a shape that will trap hydrocarbons and that is covered by an impermeable or sealing rock.
The water originally in place in a formation. Any water that resides in the pore spaces of a formation
Process of separating a mixture and dividing it into a number of smaller quantities / fractions in which the composition changes according to a gradient.
Natural Gas Liquid Fractionation
Once NGLs have been removed from the natural gas stream, they must be broken down into their base components to be useful. That is, the mixed stream of different NGLs must be separated out. The process used to accomplish this task is called fractionation. Fractionation works based on the different boiling points of the different hydrocarbons in the NGL stream. Essentially, fractionation occurs in stages consisting of the boiling off of hydrocarbons one by one. The name of a particular fractionator gives an idea as to its purpose, as it is conventionally named for the hydrocarbon that is boiled off. The entire fractionation process is broken down into steps, starting with the removal of the lighter NGLs from the stream. The particular fractionators are used in the following order:
•Deethanizer – this step separates the ethane from the NGL stream.
•Depropanizer – the next step separates the propane.
•Debutanizer – this step boils off the butanes, leaving the pentanes and heavier hydrocarbons in the NGL stream.
•Butane Splitter or Deisobutanizer – this step separates the iso and normal butanes.
By proceeding from the lightest hydrocarbons to the heaviest, it is possible to separate the different NGLs reasonably easily.
The main fossil fuels are coal, petroleum or natural gas. The fuels were formed from plants and animals that lived more than 300 million years ago during the carboniferous period, which is part of the Paleozoic era. As the fuels are burnt they release the chemical energy stored within them. More than 81% of the world’s energy comes from fossil fuels
