Basalt Fiber Composite For Antenna In Well-Logging
AssigneeSchlumberger Technology Corporation
InventorsFrank Espinosa, Golchehreh Salamat, Alexander Marks, Frederic Pauchet
Life of this patent
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Abstract
A well-logging tool for a geological formation includes a housing to be positioned in a borehole and an antenna assembly carried by the housing. The antenna assembly includes an antenna housing having a recess therein. A dielectric material layer comprises a basalt fiber composite and is within the recess. At least one antenna coil is supported by the dielectric material layer. An electrical connector is coupled to the at least one antenna coil. Resistivity processing circuitry is coupled to the electrical connector to determine an electrical resistivity of the geological formation based on the at least one antenna coil.
Claims20
A well-logging tool for a geological formation having a borehole therein, comprising:
- a housing to be positioned within the borehole;
- an antenna assembly carried by the housing and comprising
- an antenna housing having a recess therein,
- a dielectric material layer comprising a basalt fiber composite within the recess,
- at least one antenna coil supported by the dielectric material layer,
- an electrical connector coupled to the at least one antenna coil;
- and
- resistivity processing circuitry coupled to the electrical connector to determine an electrical resistivity of the geological formation based upon the at least one antenna coil.
An antenna for a well-logging tool, comprising:
- a housing;
- an antenna assembly carried by the housing and comprising
- an antenna housing having a recess therein,
- a dielectric material layer comprising a basalt fiber composite within the recess,
- at least one antenna coil supported by the dielectric material layer,
- an electrical connector coupled to the at least one antenna coil;
- and
- resistivity processing circuitry coupled to the electrical connector to determine an electrical resistivity of the geological formation based upon the at least one antenna coil.
A method for making a well-logging tool for a geological formation having a borehole therein, comprising:
- forming a housing to be positioned within the borehole;
- positioning an antenna assembly within the housing and comprising
- an antenna housing having a recess therein,
- a dielectric material layer comprising a basalt fiber composite within the recess,
- at least one antenna coil supported by the dielectric material layer,
- an electrical connector coupled to the at least one antenna coil;
- and
- coupling resistivity processing circuitry to the electrical connector to determine an electrical resistivity of the geological formation based upon the at least one antenna coil
Dependencies are inferred from the claim text.