Downhole severing tools employing a two-stage energizing material and methods for use thereof
US10094190B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 4, 2014 |
| Grant date | Oct 9, 2018 |
| Priority date | — |
| Expiry date | May 21, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF42D1/02
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
It is sometimes necessary to sever a downhole tubular structure in the course of conducting subterranean operations. Detonation of an explosive material may be used to sever a tubular structure in some instances. Downhole severing tools may comprise: a housing; a two-stage energizing material within the housing, the two-stage energizing material comprising a high explosive and a reactive energizing material; at least one initiator coupled to the two-stage energizing material at least at a first location; and a detonator coupled to the at least one initiator; wherein upon detonation of the two-stage energizing material, the high explosive undergoes a primary reaction that propagates a secondary reaction of the reactive energizing material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.