页岩气所排放的温室气体主要有两类：燃烧产生的二氧化碳以及页岩气井开采过程中的甲烷泄漏。

Greenhouse gas emissions from shale gas are predominantly down to two things: carbon dioxide produced when the gas is burned, and methane that leaks out while the well is being exploited.

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但是，Kharaka博士依然建议，二氧化碳的固存应该局限于深蓄水层，这些蓄水层上方有很多层页岩叠加在一起，可以防止泄漏。

But Dr Kharaka nevertheless suggests that the sequestration of carbon dioxide should be confined to deep aquifers, where overlying layers of shale would be likely to prevent leaks.

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通过对页岩油氧化、络合，脱出原料油中的碱氮成分和降低总氮含量，从而满足页岩油进行催化裂化的进料要求。

In order to meet the feed requirements for FCC, shale oil was treated by oxidation and complexation, to extrude the basic nitrogen components and to reduce the total nitrogen content of shale oil.

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