Main technical factors of super-critical fluid extraction of Maoming and Fushun oil shale were studied in a semi-continuous experimental apparatus with an extractor 25 mm in diameter.

在内径25毫米抽提器的半连续试验装置中对茂名和抚顺油页岩超临界流体抽提的工艺条件进行研究。

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Gas oil fraction of shale oil is unstable. To address this problem, the authors of the article propose a new solvent extraction-alkali washing refining process.

针对页岩油粗柴油馏分不稳定问题，提出了一种溶剂萃取-碱洗精制工艺。

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New fracking methods are transforming oil and gas extraction productivity, providing access to at least 167 shale oil and gas field deposits that are distributed among several states.

FORBES: Promised Land's Fracking Fictions: OPEC Goes Hollywood With Crocudrama

Fracking, or hydraulic fracturing, has unleashed a boom in energy production in the United States by allowing the extraction of oil and gas from shale rock.

CNN: Vermont first state to ban fracking

Environmentalists strongly oppose shale-gas extraction due to fears that fracking may contaminate water supplies, the oil-sands industry because it is energy-intensive and dirty, and deep-water drilling because of the risk of oil spills like last year's Gulf of Mexico disaster.

WSJ: Big Oil Companies Are Shifting Their Focus Back to the West