Presentación de PowerPoint

Conferencia ONRG de Ciencia y Tecnología
EXPONAVAL 2010
Valparaíso, Chile, 2 de Diciembre de 2010
Visión de la Investigación
de Hidratos de Metano
Dr. Juan Díaz Naveas ([email protected])
Escuela de Ciencias del Mar
P. Universidad Católica de Valparaíso - CHILE
¿What are Gas Hydrates?
Necessary Conditions for Gas
Hydrates
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•
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Water
Methane, ethane, propane, CO2 , H2S, etc.
Relatively low Temperature
Relatively high Pressure
Environments, where
gas hydrates exist:
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Permafrost regions
Oceanic margins
Gas pipelines
Forming:
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Grains, inside the rock
and sediment porosity
Veins
Nodules
Massive layers
Phase Diagram
Submarine Gas Hydrates
0
Sound Speed (m/s)
1300 1500 1700
Sea Surface
200
Depth (m)
400
Water
Column
600
800
1000
1200
1400
BSR
Hydrates
Free Gas
BSR
Sediments
Seabed
BSR: Bottom Simulating Reflector
Submarine Gas Hydates and
Bottom Simulating Reflector (BSR)
Topics Covered in Gas Hydrates
PURE Research
• Physical-chemistry of pure gas hydrates.
• Influence of gas hydrates on climate change.
• Influence of gas hydrates on the
geomechanical stability of geological units.
• Cold vents and their influence on
chemosynthetic ecosystems and on the
formation of autigenic carbonates.
Topics Covered in Gas Hydrates
APPLIED Research
• Physical-chemistry of gas hydrates in rocks and
sediments.
• Geophysical, geological and geocheimcal exploration of
gas hydrates including drilling both onshore and offshore.
• Reservoir studies of gas hydrates.
• Influence of gas hydrates on the geomechanical stability
of geological units.
• Destabilization and formation of gas hydrates.
• Production methods of natural gas from gas hydrates.
• CO2-CH4 exchange as a method of atmospheric CO2
sequestration and as a CH4 production method.
• Security studies in gas hydrates exploitation.
Gas Hydrates Research in Chile
Mainly exploration:
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Multibeam Bathymetry (MB)
Multichannel reflection Seismics (MCS)
Controlled Source Electromagnetics (CSEM)
Heat Flux (HF)
Pore water geochemistry
Bathymetry
Discovery of
new regional
geological fault
The rupture zone of
the 27 Feb. 2010
earthquake is the
best one surveyed
BEFORE the
earthquake.
It is possible to
compare BEFORE
and AFTER.
Reflexión Sísmica Multicanal
Línea VG02-17: presencia de volcanes de fango
BSR
Deep-Towed
Acoustic
Geophysical
System (DTAGS)
Deep-Towed Acoustic
Geophysical System
(DTAGS)
Pore Water
Geochemistry
Deep-Towed Acoustic
Geophysical System (DTAGS)
Primer Testigo de Hidratos
Recuperado Frente a Chile
Deep chemosynthetic benthos:
New species and trophic implications
“Subproducto”: Rocas Calcáreas
Producción por intercambio de CH4
por CO2 y consecuente secuestro de CO2
Thank you.
Questions?
Reflexión Sísmica Multicanal
Reflexión Sísmica Multicanal
Reflexión Sísmica Multicanal
Línea VG02-10
Ideas Para Explotación
Despresurización
Perforaciones Horizontales
Disociación Hidratos
Despresurización
Extracción Metano
Ideas Para Explotación
Estimulación térmica
Ingreso de vapor
Aumento de Tº
Disociación Hidratos
Liberación Metano
Extracción Metano
Ideas Para explotación
Inyección de inhibidores
Inyección de metanol
Disociación Hidratos
Liberación Metano
Extracción Metano