Systems and methods for characterizing subsurface formation properties through geochemical logging
US11788401B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 18, 2020 |
| Grant date | Oct 17, 2023 |
| Priority date | — |
| Expiry date | Sep 16, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F17/12
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Systems and methods relating to determination of oil saturation, kerogen content, and/or water saturation within kerogen-containing subsurface formations such as unconventional formations (e.g., tight formations such as shales) are provided herein. These methods advantageously rely on a simplified measurement process, reducing the direct measurements of a subsurface formation relied upon in determining oil saturation, kerogen content, and/or water saturation. In particular, methods according to some embodiments include determining or otherwise obtaining values of TOC; bulk density; porosity; and densities of kerogen, oil, and water corresponding to a subsurface formation of interest or a zone thereof. Methods of various embodiments further include, based at least in part upon the obtained values, determining one or more of kerogen content, oil saturation So, and water saturation Sw of the subsurface formation of interest, and/or a corresponding zone thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.