Inductive couplers for use in a downhole environment
First Claim
Patent Images
1. An inductive coupler for use in a downhole environment, the inductive coupler comprising:
- a body defining a cavity;
magnetic material positioned in the cavity;
a coil adjacent the magnetic material, the coil formed with a number of turns of wire, the number being at least 200 turns of wire; and
a first metal cover coupled to the body to enclose the cavity, the metal cover being electrically coupled to the body to form a substantially contiguous electrically conductive surface surrounding the cavity.
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Abstract
Inductive couplers for use in a downhole environment are described. An example inductive coupler for use in a downhole environment includes a body defining a cavity and magnetic material positioned in the cavity. The example inductive coupler also includes a coil adjacent the magnetic material, the coil formed with a number of turns of wire, and a first metal cover coupled to the body to enclose the cavity. The metal cover being electrically coupled to the body to form a substantially contiguous electrically conductive surface surrounding the cavity.
16 Citations
24 Claims
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1. An inductive coupler for use in a downhole environment, the inductive coupler comprising:
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a body defining a cavity; magnetic material positioned in the cavity; a coil adjacent the magnetic material, the coil formed with a number of turns of wire, the number being at least 200 turns of wire; and a first metal cover coupled to the body to enclose the cavity, the metal cover being electrically coupled to the body to form a substantially contiguous electrically conductive surface surrounding the cavity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. An inductive coupler for use in a downhole environment, the inductive coupler comprising:
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a body defining a cavity; magnetic material positioned in the cavity; a coil adjacent the magnetic material, the coil formed with a number of turns of an electrically conductive material; and a metal sleeve welded or brazed to the body to enclose the cavity and to form a substantially contiguous electrically conductive surface surrounding the cavity. - View Dependent Claims (22, 23)
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24. An inductive coupler for use in a downhole environment, the inductive coupler comprising:
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a female inductive coupler portion comprising; a female portion metallic body at least partially defining a female portion cavity; magnetic material positioned in the female portion cavity; a female portion coil adjacent the magnetic material, a non-metallic filler to fill one or more spaces between the female portion metallic body, the magnetic material, and the female portion coil; and a female portion metallic cover immediately adjacent the non-metallic filler and coupled to the female portion metallic body to enclose the female portion cavity, the female portion metallic cover being substantially non-permeable to fluids; and a male inductive coupler portion received within the female inductive coupler portion, the male inductive coupler portion comprising; a male portion metallic body at least partially defining a male portion cavity; magnetic material positioned in the mail portion cavity; a male portion coil adjacent the magnetic material, a non-metallic filler to fill one or more spaces between the male portion metallic body, the magnetic material, and the male portion coil; and a male portion metallic cover immediately adjacent the non-metallic filler and coupled to the male portion metallic body to enclose the male portion cavity, the male portion metallic cover being substantially non-permeable to fluids.
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Specification