Method to predict reservoir formation permeability using combined acoustic and multi-frequency dielectric measurements
US11215035B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 7, 2018 |
| Grant date | Jan 4, 2022 |
| Priority date | — |
| Expiry date | Aug 28, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V2210/6244
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Methods may include calculating a formation permeability for a subterranean formation from a combination of dielectric measurements and acoustic measurements, wherein the formation permeability is calculated according to the formula: kg=a(Vxσw/εr)b, where Vx is either Vp, Vs, or Vp/Vs, σ is formation conductivity, Øw is water-filled porosity, and a and b are constants that are empirically determined for the frequency selected with respect to Vx; and creating a design for a wellbore operation from the calculated formation permeability. Methods may also include obtaining a dielectric measurement from a downhole formation; obtaining an acoustic measurement from a downhole formation; and calculating a formation permeability from a combination of the dielectric measurement and the acoustic measurement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.