It's Related to The Environmental concerns related to the Extraction of methane from Gas hydrates

1. Gas Hydrates
 formed in early 18th century
 In 1960 russian scientist to study on
hydrates and get evidance.
 It was shallow gas reservoir at Siberia to
check the condition of hydrates
 1980 (checked the Quality and quantity)

2. Gas Hydrates
Hydrates are the ice like crystals
combination of Gas+Water formed under
subsurface or sea-level
It contain huge amount of methane
It is formed at high pressure and low
temperature

3. Where Gas Hydrates can be formed?
Formed at subsurface and surface
Subsurface at sea level they are mainly
formed
Due to low temperature and high pressure
At surface they are weakly formed at a
certain time in winter season

4. Gas Hydrates

5. Extraction of Methane from Gas
Hydrates
• Gas hydrates are one of the
unconventional types of energy
resources that is increasingly considered
as potential energy resource. As per as
production is concerned methane
extraction from gas hydrates typically
based upon conventional hydrocarbon
completion and production methods.

6. Extraction Techniques
Depressurization Technique
Thermal Stimulation
Chemical Stimulation

7. Depressurization Technique
• This method involved reducing the
pressure and increase the
temperature to gas hydrate-bearing
sediments to release methane
• It’s one of the most commonly used
method.

8. Thermal stimulation
• In this the heat is applying to the gas hydrate
deposits can release methane by melting the
hydrates.
• In this method injecting hot water or steam
into the hydrates reservoir to release
methane.
• It’s effective but also energy-intensive

9. Chemical injection
• Chemical injection can be injected
into the gas hydrate reservoir.
• The chemical injection act as
thermodynamic inhibitors,disrupting
the hydrates lattice and releasing
methane.

10. Environmental concerns related to
extraction CH4 from gas hydrate
Methane gas leakage : One of the primary
concerns is methane leakage during extraction.
Methane is a potent greenhouse gas, more
than 25 times more effective at trapping heat
in the atmosphere than carbon dioxide over a
100-year period. If not properly contained, the
release of methane during extraction and
transportation can contribute to climate
change.

11. Disturbance of Seafloor Ecosystems
• Gas hydrates are often found in deep-sea
sediments. Extracting them can disrupt
seafloor ecosystems, leading to habitat
destruction and harm to marine life. It
can also stir up sediment and release
harmful substances.

12. Pressure and Temperature Changes
The extraction process involves
changing the pressure and
temperature conditions of gas
hydrates, which can potentially
destabilize the seafloor and lead to
geological disturbances

13. Regulatory challenges
• The unique challenges associated with gas
hydrate extraction such as the potential for
methane release and environmental impacts
• C02 release
• Emissions during extration make environment
unfriendly.
• Methane emission is 80 times more harmful
than C02
• About 25% global warming from methane
Now!