Ultra-High Sensitivity Geophones Help Liaohe Oilfield Fine Exploration

Source: www.gulfoilandgas.com 8/17/2022, Location: Asia

In Well Long 46 in Well 150, Ordos Town, three researchers from Liaohe Oilfield Exploration and Development Research Institute were carefully analyzing the seismic profiles collected and processed by ultra-high sensitivity geophones. "The new technology can describe this small structure more clearly, just like adding a high-definition perspective mirror to the underground, which is of great significance for the future fine exploration of Liaohe Oilfield." said Lu Mingde, a first-level engineer at the Liaohe Oilfield Exploration and Development Research Institute.

It is reported that the core advantage of ultra-high-sensitivity detectors is higher sensitivity, which can collect richer high-frequency weak signals. Researchers apply frequency-division noise attenuation technology to better protect the high-frequency weak information collected by the detector. On this basis, the near-surface absorption attenuation compensation + robust pulse deconvolution combination technology is applied to improve the main frequency and bandwidth of the data, thereby further improving the data resolution ability, mining and utilizing high-frequency weak signals, and finally showing high signal-to-noise. ratio and high-resolution full-range processing effects.

For the data collected by ultra-high-sensitivity geophones, researchers have developed a "double-high" full-frequency tackling processing technology, that is, on the basis of conventional seismic acquisition technology, full-frequency tackling processing is carried out for the seismic data collected by ultra-high-sensitivity geophones. The seismic sections obtained after processing can clearly describe micro-structures such as thin sand bodies and small faults.

Up to now, Liaohe Oilfield has applied ultra-high-sensitivity geophones to complete 3D data collection of more than 200 square kilometers in the north of Yichuan in the Liaohe mining area of ??Ordos. This technology provides strong support for fine oilfield exploration.


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