The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 02, 2021
Filed:
Feb. 12, 2018
The Johns Hopkins University, Baltimore, MD (US);
Bruce D. Marsh, Hunt Valley, MD (US);
The Johns Hopkins University, Baltimore, MD (US);
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.