Reservoir resistivity characterization incorporating flow dynamics
US-2018231681-A1 · Aug 16, 2018 · US
Estimating parameters of Archie's law and formation texture information
US11520076B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11520076-B2 |
| Application number | US-201615081434-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 25, 2016 |
| Priority date | Mar 25, 2016 |
| Publication date | Dec 6, 2022 |
| Grant date | Dec 6, 2022 |
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Abstract
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Methods and apparatus for evaluating an earth formation for generating a numerical model comprising an expression equating a representation for the effective conductivity under Archie's law with respect to direct current with a function for the effective conductivity representative of the mixing model with respect to direct current; and solving a system of equations to obtain values for the Archie parameters including at least i) the expression; ii) a second expression equating a first order variation of the representation with a first order variation of the function with respect to water saturation of the formation (Sw); and iii) a third expression equating a first order variation of the representation with a first order variation of the function with respect to porosity of the formation (φ). The second and third expressions may equate derivatives of the representation with derivatives of the function.
First claim
Opening claim text (preview).
What is claimed is: 1. A method for evaluating an earth formation having an effective conductivity characterized by Archie's law using complex dielectric measurements, wherein the complex dielectric measurements are modeled using a mixing model approximating the dielectric behavior of the formation, the method comprising: obtaining dielectric measurements at a plurality of frequencies in the earth formation; generating a numerical model comprising an expression equating a repres…
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Classifications
- G01V3/28Primary
Physics · mapped topic
- E21B49/00Primary
Fixed Constructions · mapped topic
Physics · mapped topic
Physics · mapped topic
- G01V99/005Primary
Physics · mapped topic
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- What does patent US11520076B2 cover?
- Methods and apparatus for evaluating an earth formation for generating a numerical model comprising an expression equating a representation for the effective conductivity under Archie's law with respect to direct current with a function for the effective conductivity representative of the mixing model with respect to direct current; and solving a system of equations to obtain values for the Arc…
- Who is the assignee on this patent?
- Baker Hughes Inc
- What technology area does this patent fall under?
- Primary CPC classification G01V3/28. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Dec 06 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).