Downhole telemetry system using an optically transmissive fluid media and method for use of same
First Claim
1. A multi-channel downhole telemetry system disposed within a wellbore comprising:
- a downhole transmitter located at a first position within said wellbore and operable to optically transmit a first data stream on a first optical channel and a second data stream on a second optical channel;
a downhole receiver located at a second position within said wellbore and operable to receive the first data stream and the second data stream;
wherein said first position within said wellbore is not within a line-of-sight of said second position within said wellbore, andan optically transmissive fluid disposed in the wellbore that provides a medium for the optical transmission of the first data stream and the second data stream between the downhole transmitter and the downhole receiver, the optically transmissive fluid containing suspended solids having refraction surfaces that scatter the optically transmitted data streams in the wellbore.
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Abstract
A multi-channel downhole telemetry system for enabling communication in a wellbore. The system includes a downhole transmitter operable to optically transmit a first data stream on a first optical channel and a second data stream on a second optical channel. A downhole receiver is operable to receive the first data stream and the second data stream. An optically transmissive fluid disposed in the wellbore provides a medium for the optical transmission of the first data stream and the second data stream between the downhole transmitter and the downhole receiver. The optically transmissive fluid contains suspended solids having refraction surfaces that scatter the optically transmitted data streams in the wellbore.
62 Citations
20 Claims
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1. A multi-channel downhole telemetry system disposed within a wellbore comprising:
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a downhole transmitter located at a first position within said wellbore and operable to optically transmit a first data stream on a first optical channel and a second data stream on a second optical channel; a downhole receiver located at a second position within said wellbore and operable to receive the first data stream and the second data stream;
wherein said first position within said wellbore is not within a line-of-sight of said second position within said wellbore, andan optically transmissive fluid disposed in the wellbore that provides a medium for the optical transmission of the first data stream and the second data stream between the downhole transmitter and the downhole receiver, the optically transmissive fluid containing suspended solids having refraction surfaces that scatter the optically transmitted data streams in the wellbore. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A multi-channel downhole telemetry system disposed within a wellbore comprising:
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a downhole transmitter located at a first position within said wellbore and operable to optically transmit a first data stream on a first optical channel and a second data stream on a second optical channel; a downhole repeater located at a second position within said wellbore, wherein said first position within said wellbore is not within a line-of-sight of said second position within said wellbore, the downhole repeater operable to receive the first data stream and the second data stream and to optically retransmit the first data stream on a third optical channel and the second data stream on a fourth optical channel; a downhole receiver located at a third position within said wellbore and operable to receive the first data stream and the second data stream; and an optically transmissive fluid disposed in the wellbore that provides a medium for the optical transmission of the first data stream and the second data stream between the downhole transmitter and the downhole repeater and for the optical retransmission of the first data stream and the second data stream between the downhole repeater and the downhole receiver, the optically transmissive fluid containing suspended solids having refraction surfaces that scatter the optically transmitted data streams in the wellbore. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A multi-channel downhole telemetry method for transmitting data within a wellbore, the method comprising:
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disposing an optically transmissive fluid within the wellbore to provide a medium for optical transmission of data; optically transmitting a first data stream on a first optical channel through the optically transmissive fluid from a first location in said wellbore; optically transmitting a second data stream on a second optical channel through the optically transmissive fluid; scattering the optically transmitted data streams in the wellbore using refraction surfaces of suspended solids in the optically transmissive fluid; receiving the first data steam at a second location in said wellbore, wherein said first location within said wellbore is not within a line-of-sight of said second location within said wellbore; and receiving the second data stream. - View Dependent Claims (17, 18, 19, 20)
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Specification