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US 10,480,309 B2Granted
Methods and systems employing fiber optic sensors for electromagnetic cross-well telemetry
AssigneeHalliburton Energy Services, Inc.
InventorsGlenn Andrew Wilson, Burkay Donderici
Life of this patent
Estimating the term…
Abstract
A system includes a drillstring with an electromagnetic (EM) transmitter in a first borehole. The system also includes at least one fiber optic sensor deployed in a second borehole. The system also includes a processor configured to demodulate a data stream emitted by the EM transmitter based on EM field measurements collected by the at least one fiber optic sensor.
Claims20
A system that comprises:
- a drillstring with a bottom hole assembly;
- an electromagnetic (EM) transmitter disposed on the bottom hole assembly in a first borehole and configured to emit an EM field and a data stream;
- a plurality of fiber optic sensors deployed in a second borehole, wherein each of the plurality of fiber optic sensors are configured to measure the EM field and the data stream;
- and
- a processor configured to demodulate the data stream emitted by the EM transmitter based on EM field measurements collected by the at least one fiber optic sensor and find a distance from the EM transmitter to each of the plurality of fiber optic sensors to determine a position of the bottom hole assembly in the first borehole.
2 more elements
A method that comprises:
- emitting a data stream and an electromagnetic (“EM”) field by an EM transmitter disposed on a bottom hole assembly in a first borehole;
- taking a measurement of the EM field and receiving the data stream with at least one fiber optic sensor of a plurality of fiber optic sensors deployed in a second borehole;
- demodulating the data stream;
- ranging a distance between the EM transmitter and each of the plurality of fiber optic sensors based on the EM field measurements at each of the plurality of fiber optic sensors;
- and
- determining the position of the bottom hole assembly in the first borehole.
3 more elements
Dependencies are inferred from the claim text.