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US 2006/0037516 A1Published application
High permittivity fluid
AssigneeTetra Corporation
InventorWilliam Moeny
Life of this patent
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Abstract
The present invention provides for an electrically insulating fluid or material of high relative permittivity or dielectric constant. The fluid has a low conductivity and high relative strength and is applicable to pulsed power drilling applications.
Claims42
An electrical insulating formulation comprising:
- a first, carbon-based material having a dielectric constant greater than approximately 2.6;
- a second, carbon-based material, different from said first material, having a dielectric constant greater than approximately 10.0;
- and
- said first material at least partially miscible with said second material;
- and
- said insulating formulation having low electrical conductivity.
3 more elements
A method for drilling in hard materials comprising the steps of:
- providing a first material having a dielectric constant of greater than approximately 2.6;
- mixing the first material with a second material having a dielectric constant greater than approximately 10.0 to provide an insulating formulation comprising a low electrical conductivity;
- and
- disposing the formulation about a drilling environment to provide electrical insulation for a drilling process.
1 more element
An electrical insulating formulation comprising:
- castor oil;
- butylene carbonate;
- a dielectric strength of at least approximately 300 kV/cm (1 μsec);
- a dielectric constant of at least approximately 6;
- and
- a conductivity of less than approximately 10−5 mho/cm.
3 more elements
Dependencies are inferred from the claim text.