Will it become trapped within the rock formations, leak out, or become contaminated by residual oil ... with shale. Up to 10% of the injected hydrogen became adsorbed within the shale sample ...

The results of their study indicate that organic-rich shale might hold ... Sequential extraction of the samples was carried out to quantify lithium recovery from certain rock-forming phases ...

Fracking-the high-pressure injection of water, chemicals and sand into shale deposits to release the gas and oil trapped within the rock-in recent years has been combined with horizontal drilling ...

Shale oil mainly refers to liquid hydrocarbons trapped in formations of shale rock that can be extracted for refining. It is often found in organic-rich shale and thin interlayers of carbonate ...