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US 11,812,561 B2Granted
Thermally induced graphene sensing circuitry on intelligent valves, actuators, and pressure sealing applications
AssigneeSchlumberger Technology Corporation
InventorsManuel Marya, Alireza Zolfaghari, Srinand Karuppoor
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Abstract
Thermally induced graphene sensing circuitry and methods for producing circuits from such thermally induced circuits are presented in conjunction with applications to hydrocarbon exploration and production, and related subterranean activities. The thermally induced graphene circuity advantageously brings electrically interconnections otherwise absent on oilfield service tools, enabling components and tools to become smart.
Claims19
A method for producing thermally induced graphene sensing circuitry, comprising:
- preparing a surface of a component for placement of a coating on the surface;
- coating at least a portion of the surface of the component with a first polymeric material that includes carbon;
- applying a thermal scan to the coating of the first polymeric material to generate a pattern comprising graphene on the surface of the component, wherein the graphene is generated by the thermal scan, and wherein the pattern forms a printed circuit and comprises a zig-zag shape;
- coating at least a second portion of the surface of the component with an electrically-insulating second polymeric material;
- defining openings in the coating of the second polymeric material by leaving specific areas of the pattern uncovered when coating at least the second portion of the surface of the component with the electrically-insulating second polymeric material, wherein the openings provide access to the pattern;
- and
- adding electrical connections to the pattern, wherein the electrical connections include at least endpoints to the printed circuit.
4 more elements
Dependencies are inferred from the claim text.