Dry gas injected to the subsurface reservoir via gas injectors to support reservoir pressure and improve oil displacement
The source of
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dry gas is usually a processed solution gas produced from oil reservoir which is more economic to
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re-inject back to the oil reservoir to improve oil production rates rather than sell it on the market.
See also
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Natural Science / Physics / Chemistry / Chemical Substance / Water
Petroleum Industry / Upstream / Subsurface E&P Disciplines / Petroleum Geology / Petroleum reservoir fluids