Pulse transformer for downhole electrocrushing drilling
US10718163B2 · kind B2 · utility
Assignees
Inventor
Key dates
| Filing date | Apr 3, 2017 |
| Grant date | Jul 21, 2020 |
| Priority date | — |
| Expiry date | Dec 10, 2037 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21C37/18
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A downhole drilling system is disclosed. The downhole drilling system may include a pulse-generating circuit electrically coupled to a power source configured to provide an alternating current at a frequency and an input voltage, the pulse-generating circuit comprising an input stage circuit electrically coupled to the power source, the input stage circuit configured to control the alternating current in the pulse-generating circuit; a transformer circuit electrically coupled to the input stage circuit, the transformer circuit comprising an open-core transformer configured to generate an output voltage higher than the input voltage; and an output stage circuit electrically coupled to the transformer circuit, the output stage circuit configured to store energy for an electric pulse; and a drill bit including a first electrode and a second electrode electrically coupled to the output stage circuit to receive the electric pulse from the pulse-generating circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.