Articles

High-order Staggered Finite-difference Numerical Simulation of While-drilling Seismic Wave Field

  • DENG Rui;ZHANG Liang
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  • 1. Key Laboratory of Exploration Technologies for Oil and Gas Resources, Ministry of Education, School of Geophysics and Oil Resources, Yangtze University, Jingzhou 434023, Hubei Province, China;2. Zhanjiang Branch, Zhonghai Petroleum (China) Co., Ltd., Zhanjiang 524057, Guangdong Province, China

Received date: 2012-02-03

  Revised date: 2012-03-09

  Online published: 2012-03-18

Abstract

The while-drilling Vertical Seismic Profile (VSP) is a new kind of geophysical prospecting techniques which uses the noise of drill vibration as its seismic source and receives signal by the wave detector deployed on the earth. The vibration of rock-drill is random and continuous, and the wave signal is weak. However, the noise in the well field is strong, and the waves of different times and seismic phases superpose and interfere with each other. As a result, these factors make the SNR of while-drilling seismic data too low and result in the complexity of wave field, in the meantime, make the data processing much more difficult. By using high-order staggered grid FD, it could simulate while-drilling seismic wave field with the different shotpoint depth and different offset distance from the first-order velocity-stress wave equations. Finally, the study on the spatial propagation regulation and characteristics of while-drilling seismic field is able to guide the processing and interpretation of practical while-drilling seismic data.

Cite this article

DENG Rui;ZHANG Liang . High-order Staggered Finite-difference Numerical Simulation of While-drilling Seismic Wave Field[J]. Science & Technology Review, 2012 , 30(8) : 45 -50 . DOI: 10.3981/j.issn.1000-7857.2012.08.006

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