When drilling, we never find just oil or gas by itself. What comes up is a variety of mixes of different types of oils and gases. Let's look at what different products come up.
High quality 'sweet' and ‘light’ condensates that predominate in NZ conditions find premium prices on the international market, and are almost entirely exported - mostly to refineries in Australia and Singapore, where it is refined into petroleum.
‘Sweet’ means our oil is relatively free of sulfur compounds, and ‘light’ means it flows freely and is light in colour – a relatively pure oil.
2. Natural gas
Natural gas, or 'dry' gas, is a naturally occurring hydrocarbon gas mixture consisting primarily of methane, but commonly includes varying amounts of other higher alkanes, and sometimes a small percentage of carbon dioxide, nitrogen, hydrogen sulfide, or helium.
Natural gas is generally distributed from Taranaki around the North Island via a piped reticulation network, and used domestically for heat and cooking, commercially to heat and power businesses, as a feedstock for methanol and urea production, and to generate electricity in gas-fired power stations.
3. LPG (Liquid Petroleum Gas)
Sometimes we find 'wet' gas or LPG. This is gas that is denser than natural gas, and as such behaves like a liquid.
LPG has the advantage of being more easy to store and transport than natural gas, and is transported via truck or bottles to be use domestically and commercially for heat and cooking, and to power the BBQ!