Compact Wireless Transceiver
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Accused Products
Abstract
A communication device for an electromagnetic telemetry system for use in a well is adapted to be attached to a conductive pipe of the well and includes at least one transmitter unit for emitting a modulated electrical current in the pipe and at least one receiver unit for receiving the modulated electrical current transmitted in the pipe, the transmitter unit and the receiver unit each comprising an antenna with a magnetic core and a winding around the magnetic core, wherein the antenna is oriented such that the magnetic moment of the winding is tangential to the cross-section of the pipe for respectively emitting and receiving the modulated electrical current.
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Citations
43 Claims
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1-22. -22. (canceled)
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23. A communication device for an electromagnetic telemetry system for use in a wellbore, the communication device being adapted to be attached to a pipe in the well, the device comprising:
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at least one transmitter unit emitting a modulated electrical current in the pipe; and at least one receiver unit for receiving the modulated electrical current transmitted in the pipe, the at least one transmitter unit and the at least one receiver unit each comprising an antenna with a magnetic core and a winding around the magnetic core, wherein the antenna is oriented such that the magnetic moment of the winding is tangential to the cross-section of the pipe a for respectively emitting or receiving the modulated electrical current. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
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40. An electromagnetic telemetry system for use in a well comprising:
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a gateway linked to a surface platform by a cable; and a communication device attached to a conductive pipe deployable in the well, wherein the gateway is connected to a transmitter unit or a receiver unit, wherein the transmitter unit emits a modulated electrical current in the pipe and further wherein the receiver unit receives electrical current in the conductive pipe. - View Dependent Claims (41, 42)
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43. A method for communicating signals in a telemetry system in a well comprising:
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deploying a communication device on a pipe having at least one transmitter unit and at least one receiver unit in the well, the transmitter unit and the receiver unit each comprising an antenna with a magnetic core and a winding around the magnetic core, positioning the communication device such that the magnetic moment of the winding of the antenna is tangential to the cross-section of the pipe; emitting a modulated electrical current in the pipe by applying a modulated electrical signal to the antenna of the transmitter unit, thereby generating a magnetic field; and receiving an electrical signal by detecting the modulated electrical current transmitted in the pipe using the antenna of the receiver unit.
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Specification