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US 10,474,853 B2Granted
Multi-coil RFID sensor assembly
AssigneeHalliburton Energy Services, Inc.
InventorsMark W. Roberson, Charles Bartee, Krishna M. Ravi
Life of this patent
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Abstract
A communication assembly including at least one sensor assembly made up of interrogation circuitry and one or more antennae is described. The interrogation circuitry comprises at least one inductor comprising at least two sensing coils for reception of signals from the MEMS data sensors.
Claims20
A method of making measurements in a borehole, comprising:
- providing a communication assembly in the borehole, wherein the communication assembly comprises a body member and a plurality of ribs extending from the body member, and the communication assembly is configured to communicate with radio frequency identification device (RFID) tags in the borehole;
- wherein the communication assembly includes a sensor assembly at least partially housed within one or more of the ribs and comprising at least one sensor having at least two sensor coils, the sensor coils comprising multiple orientations with respect to each other, and wherein the sensor coils are spaced apart azimuthally around the communication assembly;
- pumping a fluid into the borehole, the fluid containing a plurality of RFID tags;
- and
- interrogating the plurality of RFID tags with the communication assembly to determine the presence or absence of RFID tags within the borehole.
2 more elements
A communication assembly for use in a borehole with a borehole wall and a casing string, comprising:
- an assembly associated with an annulus formed between the borehole wall and the casing string, the assembly comprising;
- an RFID sensing assembly configured to communicate interrogation signals to an RFID tag within the annulus and to receive signals from the RFID tag, the RFID sensing assembly including:
- an antenna arranged around the circumference of the communication assembly and configured to communicate with the RFID tag in the annulus;
- and
- at least one sensor comprising at least two sensor coils, the sensor coils comprising multiple orientations with respect to each other, and wherein the sensor coils are spaced apart azimuthally around the communication assembly;
- a body member;
- and
- a plurality of ribs extending generally longitudinally along the body member, wherein at least a portion of the RFID sensing assembly is housed within one or more of the ribs;
- a data storage device to receive information associated with signals received from the RFID tag;
- and
- a power source configured to supply electrical power to the electronic control circuitry and the data storage device.
8 more elements
A system for use in a borehole, comprising:
- a casing string comprising first and second communication assemblies supported by the casing string and disposed in longitudinally spaced relation to one another along the casing string,
- RFID tags located in a fluid in an annulus surrounding the casing string when the casing string is in place within the borehole,
- a control unit configured to receive data indicative of the information received from the first and second communication assemblies to provide information about the fluid in the annulus;
- and
- wherein each communication assembly comprises a body member and a plurality of ribs extending from the body member, and each communication assembly is configured to obtain information associated with RFID tags in an annulus surrounding the casing when the casing is in place within a borehole;
- and
- wherein each communication assembly comprises a sensor assembly at least partially housed within one or more of the ribs and comprising at least one sensor comprising at least two sensor coils, the sensor coils comprising multiple orientations with respect to each other, and wherein the sensor coils are spaced apart azimuthally around the corresponding communication assembly.
4 more elements
Dependencies are inferred from the claim text.