Unlocking tight and shale gas - Shell Global

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· Tapping into tight and shale gas
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** Unlocking tight and shale gas **

Central processing facilities for Shell’s tight gas operations at
Changbei, China.

*Technological advancements are helping us to unlock major sources of
natural gas trapped in dense rock, known as tight and shale gas,
dramatically altering the energy landscape. We take many steps to help
protect the environment where we operate and work closely with communities
to address local concerns and help develop local economies and improve how
we operate.*


Two operators check and test a gas detector at Changbei’s central
processing facilities, China.

- Tapping into tight and shale gas -

Opening rock pores 20,000 times smaller than a human hair to unlock


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how is natural gas made


Natural gas - Wikipedia, the free encyclopedia

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** Natural gas **

From Wikipedia, the free encyclopedia
Jump to: navigation, search
For other uses, see Natural gas (disambiguation).
Natural gas extraction by countries in cubic meters per year.

*Natural gas* is a naturally occurring hydrocarbon gas mixture consisting
primarily of methane, but commonly includes varying amounts of other higher
alkanes and even a lesser percentage of carbon dioxide, nitrogen, and
hydrogen sulfide.^[1] Natural gas is an energy source often used for
heating, cooking, and electricity generation. It is also used as fuel for
vehicles and as a chemical feedstock in the manufacture of plastics and
other commercially important organic chemicals.

Natural gas is found in deep underground natural rock formations or
associated with other hydrocarbon reservoirs in coal beds and as methane
clathrates. Petroleum is also another resource found in proximity to and
with natural gas. Most natural gas was created over time by two mechanisms:
biogenic and thermogenic. Biogenic gas is created by methanogenic organisms
in marshes, bogs, landfills, and shallow sediments. Deeper in the earth, at
greater temperature and pressure, thermogenic gas is created from buried
organic material.^[2]^[3]

Before natural gas can be used as a fuel, it must undergo processing to
remove impurities, including water, to meet the specifications of
marketable natural gas. The by-products of processing include ethane,
propane, butanes, pentanes, and higher molecular weight hydrocarbons,
hydrogen sulfide (which may be converted into pure sulfur), carbon dioxide,
water vapor, and sometimes helium and nitrogen.

Natural gas is often informally referred to simply as *gas*, especially
when compared to other energy sources such as oil or coal. But not to be
confused with gasoline especially in North America, the term gasoline also
is often shortened in colloquial usage to gas.

Natural gas coming out of


Source: en.wikipedia.org/wiki/Natural_gas

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