A low-voltage differential cross-fusion encoding strategy wave code communication system and communication method
By employing a low-pressure differential inter-coding strategy, the wavecode communication system, combined with surface and downhole control systems, achieves integrated fusion of pulse coding and duration coding. This solves the problem of low communication resolution in low-permeability reservoirs, enhances the system's adaptability and real-time performance, and makes it suitable for various well conditions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- PETROCHINA CO LTD
- Filing Date
- 2025-01-17
- Publication Date
- 2026-07-17
AI Technical Summary
In low-permeability reservoirs, the switching of surface valve groups cannot create large pressure differential changes in the well, resulting in low communication resolution, small injection volume per well, and long wavecode communication time. This affects the water injection and pressurization work of other injection wells in the pipeline network, and there is a lack of communication methods that do not require prior knowledge of the well conditions.
The wavecode communication system, which adopts a low-pressure differential fusion coding strategy, includes surface and downhole central control systems. It encodes functional commands through preset communication rules, controls the waveform generator to generate pressure fluctuations, and combines downhole pressure and flow data for encoding and decoding. This achieves integrated fusion of pulse coding and duration coding, and supports bidirectional communication.
It improves the system's versatility and adaptability, enhances communication flexibility and real-time performance, reduces the possibility of errors, adapts to various well conditions, and improves the system's stability and reliability.
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Figure CN122407167A_ABST