Patent ID: 11933691
Assignee: INSTITUTE OF GEOLOGY AND GEOPHYSICS, CHINESE ACADEMY OF SCIENCES
Field: Measurement (Instruments)
Classification: CPC G  Y | IPC G

Claim 7:
8. A CO2 storage state networking monitoring method with multi-information fusion, characterized in that the method is applied to the CO2 storage state networking monitoring device with multi-information fusion, comprising a plurality of dispersed multi-information CO2 underground monitoring devices and a ground monitoring device;
each of the multi-information CO2 underground monitoring device comprises a cable mounted at the external of a non-conductive sleeve and a preset number of multi-information sensor arrays in preset orientations; and each sensor terminal of each multi-information sensor array at least comprises orientation electrodes and a pressure sensor and is connected with the cable;
wherein each multi-information sensor array comprises a preset number of orientation electrodes which are in one orientation and vertically inserted into the non-conductive sleeve; and the pressure sensor is a multidirectional sensor;
the ground monitoring device comprises a current source, an emitting apparatus, a downhole sensor detection module and a computer center control;
comprises:
step S100, selecting a single multi-information sensor array through the ground monitoring device, providing an emitter electrode and a receiver electrode, emitting a detection current in a preset waveform by the emitter electrode, receiving the lost detection current by the receiver electrode, obtaining a potential difference between the electrodes, measuring the potential difference between the electrodes by selecting another combination of the emitter electrode and the receiver electrode, enabling all the potential differences between the electrodes in one orientation to form orientation electrical signal data, obtaining electrical signal data in the another orientation by selecting another orientation electrode array until collection of all the electrical signal data in all orientations of single monitoring device is completed, and combining all the orientation electrical signal data into single-monitoring-device electrical signal data;
step S200, continuously obtaining real-time pressure signals through all multidirectional pressure sensors;
step S300, obtaining the single-monitoring-device electrical signal data and the real-time pressure signals by the ground monitoring device, and counting the real-time pressure signals into a pressure signal set;
intercepting a latest pressure signal segment with a preset duration, and analyzing the fluid flowing condition at the view of the pressure sensor;
inverting the single-monitoring-device electrical signal data to obtain resistivity grid distribution images in all the orientations;
step S400, calculating orientation CO2 distribution and a CO2 flowing state at an electrode view based on the resistivity grid distribution images;
obtaining the CO2 flowing state at the pressure view based on the orientation CO2 distribution and the fluid flowing condition at the view of the pressure sensor, and obtaining the CO2 regional storage state based on the CO2 flowing state and the CO2 flowing state between the plurality of dispersed multi-information CO2 underground monitoring devices;
step S500, summarizing the CO2 flowing states at the electrode view and the CO2 flowing states at the pressure view of all the CO2 underground monitoring apparatuses to obtain a CO2 flowing state between the plurality of dispersed multi-information CO2 underground monitoring devices;
obtaining the CO2 regional storage state based on the CO2 flowing state between the plurality of dispersed multi-information CO2 underground monitoring devices;
step S600, repeating the steps from S100 to S500, and continuously monitoring the CO2 flowing state in the region underground.