Method for the determination of mud weight window in N-porosity N-permeability formations
US11952882B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 14, 2022 |
| Grant date | Apr 9, 2024 |
| Priority date | — |
| Expiry date | Aug 28, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V2210/624
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method includes obtaining total stresses and pore pressures of each porous medium of a formation, determining a first and second set of effective stresses for the formation, determining an individual collapse and fracturing mud weight for each porous medium of the formation using a first set of associated failure criteria, wherein the first set of associated failure criteria are based on the first set of effective stresses, determining an overall collapse and fracturing mud weight for the formation using a second set of associated failure criteria, wherein the second set of associated failure criteria is based on the second set of effective stresses, determining a mud weight window for the formation using the individual collapse mud weight, the individual fracturing mud weight, the overall collapse mud weight, and the overall fracturing mud weight, and transmitting a command to a drilling system based on the mud weight window.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.