Gas Hydrate: Energy Source or Climate Change Accelerator? Source: - - PowerPoint PPT Presentation

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Gas Hydrate: Energy Source or Climate Change Accelerator? Source: - - PowerPoint PPT Presentation

Nov 19, 2023 170 likes •586 views

Gas Hydrate: Energy Source or Climate Change Accelerator? Source: USGS, DOE, AAPG, Art Johnson (Independent Consultant) Priyank Jaiswal, PhD (priyank.jaiswal@okstate.edu) Assistant Professor Boone Pickens School of Geology Oklahoma State

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Gas Hydrate: Energy Source or Climate Change Accelerator?

Source: USGS, DOE, AAPG, Art Johnson (Independent Consultant)

Priyank Jaiswal, PhD (priyank.jaiswal@okstate.edu) Assistant Professor Boone Pickens School of Geology Oklahoma State University

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Energy Use 1970

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Energy Use 2005

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Estimated Energy

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Energy Resource

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World Oil

NGL: Natural gas liquids (liquids recovered from natural gas plants) Predictive

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Gas Hydrate

  • 1. A new resource?
  • 2. How to find them?
  • 3. How to quantify them?
  • 4. Can we get them out?
  • 5. Are they economic?
  • 6. How will they impact the climate?
  • 7. Where do we go in hydrate research?
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SLIDE 8
  • 1. International Hydrate Research
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They are abundant!

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They are plenty!

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What are Gas Hydrate

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Hydrate Structures

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High Yield Resource

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US Gas Reserves Base

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Gas Hydrate

  • 1. A new resource?
  • 2. How to find them?
  • 3. How to quantify them?
  • 4. Can we get them out?
  • 5. Are they economic?
  • 6. How will they impact the climate?
  • 7. Where do we go in hydrate research?
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Hydrate Stability

  • Moderate Temperature and

Pressure

  • Natural Occurance

– Arctic permafrost – Shallow Marine

  • Source

– Biogenic (predominantly biological agents) – Thermogenic (predominantly thermal regime)

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Stability

  • Only a narrow zone where hydrates are stable
  • Unstable (?) and balance
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Stability

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Hydrate Physical Properties

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Cores

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Well Logging

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Seismic Imaging

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Resistivity

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Gas Hydrate

  • 1. A new resource?
  • 2. How to find them?
  • 3. How to quantify them?
  • 4. Can we get them out?
  • 5. Are they economic?
  • 6. How will they impact the climate?
  • 7. Where do we go in hydrate research?
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Rock Model

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Duality

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Gas Hydrate

  • 1. A new resource?
  • 2. How to find them?
  • 3. How to quantify them?
  • 4. Can we get them out?
  • 5. Are they economic?
  • 6. How will they impact the climate?
  • 7. Where do we go in hydrate research?
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Probability Curve

  • There is a 95% chance we produce ~5% and
  • nly 5% chance we produce 40% of total

reserves!

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Messoyakha Field, Siberia

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Production Technology

  • None of the above tested in marine
  • Depressurization tested in permafrost
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Gas Hydrate

  • 1. A new resource?
  • 2. How to find them?
  • 3. How to quantify them?
  • 4. Can we get them out?
  • 5. Are they economic?
  • 6. How will they impact the climate?
  • 7. Where do we go in hydrate research?
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Concerns

  • High Risk (lack of understanding?)

– Safety issues in drilling – Reservoir development – Temperature variations

  • Low Returns (lack of downstream)

– No infrastructure in place – Long term research required – Limited and not assured prospect

  • Climate Change

– Slope instability (Methane escape) – More fuel to burn??

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Hydrate Cost-Benefit

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Permafrost Case

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Gas Hydrate

  • 1. A new resource?
  • 2. How to find them?
  • 3. How to quantify them?
  • 4. Can we get them out?
  • 5. Are they economic?
  • 6. How will they impact the climate?
  • 7. Where do we go in hydrate research?
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Negative Impact

Was the PETM due to hydrate release?

Thomas, D.J.; Zachos, J.C.; Bralower, T.J.; Thomas, E.; Bohaty, S. (2002). "Warming the fuel for the fire: Evidence for the thermal dissociation of methane hydrate during the Paleocene-Eocene thermal maximum". Geology 30 (12): 1067–1070

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Hydrate Formers

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Positive Impact

  • Can we replace CH4 by CO2?
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Gas Hydrate

  • 1. A new resource?
  • 2. How to find them?
  • 3. How to quantify them?
  • 4. Can we get them out?
  • 5. Are they economic?
  • 6. How will they impact the climate?
  • 7. Where do we go in hydrate research?
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SLIDE 40

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