System and method for optimizing hydrocarbon production from subsurface reservoirs
US11150377B2 · kind B2 · utility
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19Claims
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Key dates
| Filing date | Jul 18, 2019 |
| Grant date | Oct 19, 2021 |
| Priority date | — |
| Expiry date | Aug 26, 2039 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B2200/20
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method is described for subsurface hydrocarbon reservoir characterization including receiving a time-lapse electromagnetic (EM) dataset and a flow dataset; inverting the time-lapse EM dataset using a parametric inversion that models steel well casings to determine a volume of fluid-changed reservoir; inverting the time-lapse EM dataset and the flow dataset using a joint inversion that honors the volume of the fluid-changed reservoir to determine relative permeability and capillary pressure; and characterizing flow characteristics in the volume of the fluid-changed reservoir. The method may be executed by a computer system.
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