US 11,746,599 B2
High-power capacitor for downhole electrocrushing drilling
William M. Moeny, Bernalillo, NM (US); and Kirk Slenes, Albuquerque, NM (US)
Assigned to Halliburton Energy Services, Inc., Houston, TX (US); Chevron U.S.A. Inc., San Ramon, CA (US); and SDG, LLC, Minden, NV (US)
Filed by Halliburton Energy Services, Inc., Houston, TX (US); Chevron U.S.A. Inc., San Ramon, CA (US); and SDG LLC, Minden, NV (US)
Filed on Feb. 24, 2021, as Appl. No. 17/184,223.
Application 17/184,223 is a division of application No. 15/746,337, granted, now 10,947,785, previously published as PCT/US2016/030971, filed on May 5, 2016.
Claims priority of provisional application 62/207,266, filed on Aug. 19, 2015.
Prior Publication US 2021/0180407 A1, Jun. 17, 2021
Int. Cl. E21B 7/15 (2006.01); E21B 10/00 (2006.01); E21B 7/00 (2006.01); H01G 4/224 (2006.01); H01G 4/30 (2006.01); H01G 4/40 (2006.01); H01G 4/232 (2006.01); H01G 4/12 (2006.01); H01G 4/14 (2006.01)
CPC E21B 7/15 (2013.01) [E21B 7/00 (2013.01); E21B 10/00 (2013.01); H01G 4/1227 (2013.01); H01G 4/1245 (2013.01); H01G 4/14 (2013.01); H01G 4/224 (2013.01); H01G 4/30 (2013.01); H01G 4/40 (2013.01); H01G 4/232 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A downhole drilling system, comprising:
a drill bit including a first electrode and a second electrode;
a pulse-generating circuit coupled to the first electrode and the second electrode; and
a capacitor within the pulse-generating circuit, the capacitor comprising:
a plurality of electrode sheets;
a plurality of dielectric sheets interleaved with the plurality of electrode sheets, each of the dielectric sheets comprising 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; and
a dielectric encapsulant that fills space between the interleaved dielectric sheets and electrode sheets.