Determining source rock maturity based on hydrogen isotopes
US11815503B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 8, 2021 |
| Grant date | Nov 14, 2023 |
| Priority date | — |
| Expiry date | Feb 9, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/2823
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A computer receives a measured wetness of and a measured δ2H value associated with a test gas sample from a hydrocarbon formation. The measured wetness is a molar ratio of heavy gas compounds over a total gas within the measured sample. The computer receives calculated wetnesses calculated δ2H values associated with a gas samples taken from one or more analogous hydrocarbon reservoirs. The measured wetness received for the test gas sample is identified from among the plurality of calculated wetnesses. The computer determines a corresponding δ2H value from among the calculated δ2H values that corresponds to the measured wetness of the test gas sample. The computer determines a predicted sample VRo (vitrinite reflectance equivalent) for the test gas sample based on the corresponding δ2H value and a correlation of δ2H values to VRo values. Hydrocarbons are produced from the hydrocarbon formation based on the predicted sample VRo.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.