Selection method of loss control materials for lost circulation control in fractured reservoirs based on photoelastic experiments
US10962354B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 10, 2020 |
| Grant date | Mar 30, 2021 |
| Priority date | — |
| Expiry date | Dec 10, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2203/0647
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to a selection method of loss control materials for lost circulation control in fractured reservoirs based on photoelastic experiments. By using the photoelastic material to simulate rigid lost circulation material, obtaining photoelastic images and load curves during a loading process of plugging zones formed by the lost circulation material, selecting the lost circulation material according to structure stability of plugging zones. Based on ‘a relationship between structures and performances’ and granular matter mechanics, the present method is with high reliable to duly observe distribution and evolution of internal forces in a pressure-bearing process of plugging zones, reveal an instability mechanism of the plugging zone, and optimize the lost circulation material in a targeted manner; the present disclosure based on mesoscopic structure characterization of plugging zones is for a new idea for material selection of deep fractured reservoirs, of good repeatability, simple operation and low economic cost.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.