Method and apparatus for safe transport handling arming and firing of perforating guns using a bubble activated detonator
US5088413A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 24, 1990 |
| Grant date | Feb 18, 1992 |
| Priority date | — |
| Expiry date | Sep 24, 2010 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF42B3/128
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An exploding foil bubble activated detonator, adapted for use in a perforating gun, includes an exploding foil, the exploding foil including as neck section which vaporizes when a current of sufficient magnitude and duration flows therethrough, a layer of polyimide material deposited over said foil, and a spacer layer deposited over said layer of polyimide material, the spacer layer including a guiding hole disposed directly over the neck section of the foil. When the current flows through the neck section of the foil, a turbulence is caused to occur directly above the neck section. This turbulence causes a portion of the polyimide material to expand to form a bubble. The bubble is shaped and sized by the guiding hole in the spacer layer which is disposed directly over the neck section of the foil. The shaped and sized bubble in the polyimide material impacts an explosive thereby detonating the explosive. A selective gun firing system may include the bubble activated detonator and functions to allow an operator to selectively fire, in a predetermined sequence, a plurality of perforators in the perforating gun, such as from bottom gun to top gun. A hall effect sensor disposed in a w…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.