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In the early morning of August 25th, the testers made a field test of the prototype MEMS detector in the Dunhua Mountain area in the northeast. The test was synchronized with the actual production. The detector used in the production uses 12 conventional detectors to increase the signal-to-noise ratio in series. The MEMS detector is Single point reception. The test data is subjected to simple band-pass filtering to show that the single-shot record received by the MEMS detector is close to the record received by the conventional detector string, and the MEMS detector receives the recorded in-phase axis resolution higher than that of the conventional detector string. The test was carried out under actual production conditions, and good test results were obtained in a poor environment.
At present, the MEMS detectors prototyped by the microsystems have improved the detection circuit of the accelerometer based on the previous tests, overcome the interference signal of the accelerometer, and improve the packaging process, thus greatly improving the performance. Significant progress has been made in practical use. Geophones based on MEMS accelerometers are superior to traditional geophones in terms of frequency band, dynamic range and axial anti-interference performance. After further performance improvement and improvement, they are fully capable of being applied to the petroleum exploration industry and gradually replacing traditional detection. This has important social and economic benefits for improving the industrialization capabilities of microsystem processing and packaging platforms, reducing oil exploration costs and risks, and improving the technical level of the petroleum exploration industry.
Micro-system developed into oil exploration geophone
Under the support of the “Micro-Electro-Mechanical System†project of the “863†project of the Ministry of Science and Technology of the People's Republic of China, the Institute of Microsystems of the Chinese Academy of Sciences worked closely with the Nanjing Institute of Petroleum Geophysical Exploration. After nearly two years of hard work, it has overcome many difficulties and successfully developed domestic MEMS acceleration. The core of the petroleum exploration geophone.