Method and apparatus for insulating a resonator downhole
First Claim
1. An apparatus for analyzing a fluid comprising:
- a resonator having a fixed end attached to an electrical connection and a free vibrating end in physical contract only with the fluid; and
a vacuum cycled insulator material covering only the fixed end of the resonator and the electrical connection wherein the insulator material is exposed to a vacuum to remove bubbles from the insulator material, and wherein the insulator material maintains integrity when exposed to downhole pressure.
1 Assignment
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Accused Products
Abstract
A method and apparatus are provided for insulating electrical connections to a resonator from fluid downhole under extreme pressure and temperature conditions downhole. The method and apparatus provide a pliable insulator that maintains electrical isolation between resonator electrical connections during exposure to high pressures downhole. The insulator is evacuated or placed in a vacuum prior to curing to remove bubbles from the insulator material. The insulator is then heat cured. The insulator is substantially chemically non reactive so that the insulator maintains electrical isolation between the resonator electrical connections during exposure to fluids downhole. The insulator has a thermal coefficient of expansion in a range so that the insulator maintains electrical isolation between the resonator electrical connections during exposure to high temperatures downhole.
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Citations
20 Claims
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1. An apparatus for analyzing a fluid comprising:
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a resonator having a fixed end attached to an electrical connection and a free vibrating end in physical contract only with the fluid; and a vacuum cycled insulator material covering only the fixed end of the resonator and the electrical connection wherein the insulator material is exposed to a vacuum to remove bubbles from the insulator material, and wherein the insulator material maintains integrity when exposed to downhole pressure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for insulating electrical connections to a resonator having a fixed end attached to the electrical connections and a free end in physical contact with only a fluid, the method comprising:
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priming the electrical connection; covering the primed electrical connection attached to the fixed end of the resonator with a pliable insulator material to prevent fatigue under pressure; and exposing the insulator material to a vacuum to remove bubbles from the insulator material. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification