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International Conference on Information, Electronic and Computer Science (ICIECS 2010 E-BOOK)

Zibo,China,11.26-11.28,2010

ISBN: 978-1-935068-42-6 Scientific Research Publishing, USA

E-Book 2224pp Pub. Date: November 2010

Category: Computer Science & Communications

Price: $360

Title: Denoising of Microseismic Data by DCT
Source: International Conference on Information, Electronic and Computer Science (ICIECS 2010 E-BOOK) (pp 1605-1608)
Author(s): Weibo Wang, Institute of Geology and Geophysics, Chinese Academy of Science, Beijing, China ； China University of Petroleum, Dongying, China
Baojuan Li, Geophysical Research Institute of Shengli Oilfield Branch Co., Dongying, China
Yaoqi Zhou, China University of Petroleum, Dongying, China
Jie Kong, China University of Petroleum, Dongying, China
Abstract: Microseismic data acquired by surfaced-based sensors is prone to be disturbed by the vibration of compressors and pumps in the oil or gas well site, and the disturbance is difficult to be removed by conventional digital filters. Discrete cosine transform (DCT) is used to analyze microseismic data. It is found that the energy of disturbance is concentrated in several values in DCT domain, so that it is easy to be removed in DCT domain. The DCT values of multi-channel are modified by a properly selected threshold, and inverse DCT is performed to get processed signals. It is shown that the pumps’ disturbances are removed effectively while the microseismic event signals are reserved without much distortion, so that DCT denosing is an effective preprocessing method for microseismic data processing.
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