Energetic charge for propellant fracturing
US10907460B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 12, 2018 |
| Grant date | Feb 2, 2021 |
| Priority date | — |
| Expiry date | Mar 3, 2039 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B49/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An energetic charge for propellant fracturing may include a propellant material or a shape of the energetic charge being selected such that a rise time of a deflagration of the energetic charge is determined to be in the propellant fracturing regime. The propellant fracturing regime may be defined by a set of linear equations associated with the rise time for pressure from the deflagration of the energetic charge. The rise time may be calculated based on an equation {dot over (ε)}=(dP/dt)/E, where {dot over (ε)} represents a strain rate, dP/dt represents a change in pressure with respect to time, and E is Young's modulus, and where the set of linear equations relate the rise time to a borehole diameter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.