Methods and systems for predicting risk of early-screen-out in near-well zone based on distributed fiber acoustic sensing (DAS)
US12158063B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 15, 2023 |
| Grant date | Dec 3, 2024 |
| Priority date | — |
| Expiry date | Dec 15, 2043 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A10/40
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method for predicting a risk of early screen-out in a near-well zone based on distributed fiber acoustic sensing (DAS) is provided. The method comprises: obtaining an acoustic signal during a fracturing process based on distributed optical fibers deployed in a well to be fractured, and obtaining pressure monitoring data based on at least one sensor deployed in the well to be fractured; determining, based on a location of a perforation cluster, and an acoustic signal of the perforation cluster, fracturing fluid flow velocity data of the perforation cluster by a first predetermined algorithm; determining, based on the fracturing fluid flow velocity data of the perforation cluster and perforation parameters of the perforation cluster, a perforation friction resistance pressure drop of the perforation cluster by a second predetermined algorithm; determining a near-well friction resistance pressure drop of the perforation cluster based on a fluid pressure, the perforation friction resistance pressure drop, a slit fluid pressure; determining a near-well friction resistance coefficient of the perforation cluster based on the near-well friction resistance pressure drop of the perforation…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.