High-power fuse-protected capacitor for downhole electrocrushing drilling
AssigneesHalliburton Energy Services, Inc., Chevron U.S.A. Inc., SDG, Inc.
InventorsWilliam M. Moeny, Kirk Sienes
Life of this patent
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Abstract
A downhole drilling system is disclosed. The downhole drilling system may include a drill bit including a first electrode and a second electrode. The downhole drilling system may also include a pulse-generating circuit coupled to the first electrode and the second electrode. A capacitor within the pulse-generating circuit may include a plurality of electrode sheets and a plurality of dielectric sheets interleaved with the plurality of electrode sheets. Each of the dielectric sheets may include a composite material including a polymer matrix formed from a polymer component and a nanoparticle component that increases the dielectric constant of the composite material above that of the polymer component.
Claims4
A downhole drilling system, comprising:
- a drill bit including a first electrode and a second electrode;
- and
- a bottom-hole assembly including:
- a pulse-generating circuit coupled to the drill bit to provide an electrical pulse to the drill bit;
- and
- a capacitor within the pulse-generating circuit, the capacitor including a plurality of branches coupled in parallel with each other, each of the plurality of branches comprising:
- a fuse comprising an outer cylinder, a filament located within the outer cylinder, an insulating fluid located within the outer cylinder, and a plurality of dispersion elements intermixed with the insulating fluid within the outer cylinder;
- and
- a branch capacitor coupled in series with the fuse.
Dependencies are inferred from the claim text.