T/CI 030-2022 Design specification for distributed optical fiber seismic probing system

Scope

Scope: This standard specifies the product composition, technical requirements, test methods, inspection rules, and marking, packaging, transportation, and storage of distributed optical fiber seismic sensing systems. This standard applies to the design, production, factory inspection, and type inspection of distributed optical fiber seismic sensing systems. This standard applies to the online detection of oil and gas and minerals based on seismic waves. Main technical contents: 3.1 Distributed optical fiber seismic sensing systems (abbreviated as DAS systems) consist of a monitoring host and optical cables. They use optical cables as sensors to detect seismic waves and are photoelectric systems that process seismic signals using the monitoring host. 3.2 Real-time gathers refer to the seismic wave signal records from multiple locations of the distributed optical fiber seismic sensing system that are real-time demodulated and stored. 3.3 Detection length refers to the longest optical cable length in the distributed optical fiber seismic sensing system that can respond to seismic wave signals. 3.4 Positioning accuracy refers to the deviation between the displayed position and the actual position in the distributed optical fiber seismic sensing system. 3.5 Spatial resolution refers to the minimum distance between two measured seismic signals that the distributed optical fiber seismic sensing system can distinguish and display. 3.6 Minimum detectable volume refers to the minimum seismic signal intensity that the distributed optical fiber seismic sensing system can respond to.

Development Information

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