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US 11,655,708 B2Granted
Telemetry using pulse shape modulation
AssigneeHalliburton Energy Services, Inc.
InventorsLi Gao, Ravi P. Nanayakkara, Joni Polili Lie, Mukul M. Agnihotri
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Abstract
A downhole telemetry method and system are disclosed. In some embodiment, a method includes driving a pulser device based on an input data stream, wherein driving the pulser device includes generating modulated pressure pulses including modulated pulse shapes within a fluid telemetry medium. In some embodiments in which bi-modulation is utilized, the method further includes driving the pulser device including modulating pressure pulses including pulse position modulating pressure pulses.
Claims19
A downhole telemetry method comprising:
- receiving a data stream;
- dividing the data stream into a first sub-stream and a second sub-stream by demultiplexing the data stream in an interleaved manner based on relative data density capacity of a pulse shape modulation and a pulse position modulation, wherein the first sub-stream is modulated using the pulse shape modulation and the second sub-stream is modulated using the pulse position modulation, and wherein the first sub-stream is modulated at least partially in parallel to the modulation of the second sub stream;
- and
- driving a pulser device based on the data stream, wherein driving the pulser device includes generating modulated pressure pulses including pulse position modulating pressure pulses and pulse shape modulation pressure pulses within a fluid telemetry medium.
1 more element
A fluid telemetry system comprising:
- a pulser device;
- a receiver telemetry module configured to receive a data stream and divide the data stream into a first sub-stream and a second sub-stream by demultiplexing the data stream in an interleaved manner based on relative data density capacity of a pulse shape modulation and a pulse position modulation;
- wherein the first sub-stream is
- modulated using the pulse shape modulation and the second sub-stream is modulated using the pulse position modulation, and wherein the first sub-stream is modulated at least partially in parallel to the modulation of the second sub stream;
- and
- a control system for driving the pulser device based on the data stream, wherein driving the pulser device includes generating modulated pressure pulses including pulse position modulating pressure pulses and pulse shape modulating pressure pulses within a fluid telemetry medium.
3 more elements
Dependencies are inferred from the claim text.