GAS-HYDRATE RESOURCE AND FIELD-TEST EVIDENCE WORKSHEET
Yenra | Updated September 7, 2026
Article: https://yenra.com/gas-hydrates/

PURPOSE
Evaluate a gas-hydrate resource or production claim by recording the
evidence level and its limits. Use the original assessment or test
report. Mark unavailable data as missing rather than estimating it.

CLAIM AND SOURCE
Claim being evaluated:
Author / institution / publication date:
Original source and report version:
Location, geology and assessment boundary:
Evidence level: occurrence / gas in place / technically recoverable
resource / field test / commercial project or stated reserve class:
Reporting definition, uncertainty range and assumptions:
What was measured versus modeled or proposed:

FIELD TEST
Well/site and reservoir interval:
Production method and operating conditions:
Calendar start/end and elapsed days:
Operating days and interruptions:
Gas volume reference conditions:
Gas rate time series and total:
Water production:
Pressure and temperature response:
Sand / sediment behavior:
Energy and other inputs:
Methane release measurements:
Well-integrity monitoring:
Post-test observations:

RATE CHECK
Calendar-day average = total gas / elapsed calendar days.
Operating-day average = total gas / operating days.
Keep the gas volume standard conditions consistent.
FICTIONAL EXAMPLE: 2,000 standard cubic meters per operating day
for 20 operating days within a 30-day period gives:
Total = 40,000 standard cubic meters.
Calendar-day average = about 1,333 standard cubic meters/day.
This invented constant-rate example implies no annual production,
recovery factor or commercial viability.

MODEL AND SCALE-UP
Which measured data calibrate the model?
Which independent observations test it?
Forecast duration beyond measured operation:
Recovery assumptions and uncertainty:
Changes required for multiple wells or larger facilities:

ENVIRONMENT AND COMMERCIAL SYSTEM
Methane capture/leakage measurement boundary:
Produced-water handling:
Sediment and well-integrity monitoring:
Gas processing, transport and market access:
Wells, facilities, operating and closure costs:
Permitting and monitoring obligations:
Actual facility or service availability:
What remains to be demonstrated and who will supply evidence:

CONCLUSION
The evidence establishes:
The evidence leaves unresolved:
Next useful measurement or document:
Reason/date to revisit:
A resource quantity is not a reserve booking or project value.
A peak rate multiplied by a year is not a sustained production record.

REFERENCE CONTEXT
The linked article explains the comparisons and limits. Check exact project or equipment documents before using a specification.
USGS gas-hydrate energy research overview
https://www.usgs.gov/centers/central-energy-resources-science-center/science/gas-hydrate-energy-research-2024-update
2009 congressional testimony, USGS geologist Timothy Collett
https://www.usgs.gov/congressional/statement-dr-timothy-s-collett-research-geologist-us-geological-survey
NETL’s Ignik Sikumi project record
https://www.netl.doe.gov/node/6971
NIST clathrate-hydrate database
https://www.nist.gov/mml/acmd/trc/clathrate-hydrate-database