Anew fraccing technique is about to be trialed in the field ...
Quote... Cryogenic Fracturing
In Golden, at the Colorado School of Mines, researchers have been testing a new way to open oil and gas deposits tightly locked in shale rock without using a single gallon of water.
Industry insiders have taken to calling it cryogenic fracturing, and it works like this...
Liquid nitrogen or carbon dioxide, at temperatures below negative 321 degrees Fahrenheit, is pumped underground at high pressure.
Once the freezing cold liquid hits the heated, pressurized rocks, the reaction causes the shale to crack open and the oil to gush out.
In theory, the below-freezing liquid should actually allow more oil and gas to flow from the rocks than water does currently.
You see, when water is injected into a well, it stays there and hogs space that would normally allow oil to flow.
But with cryogenic fracturing, the chemicals pumped underground open larger gashes in the rock and evaporate on contact with the shale, meaning the oil has more space to gush out.
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