First Arrival Time Auto-Picking Method Based on Multi-Time Windows Energy Ratio

Jianguo SONG, Xia CAO, Weixiu XU, Jing YANG

Abstract


First arrival time auto-picking technique plays an important role in seismic exploration. It is widely used in shallow layer tomography and static correction. Conventional method that based on sliding time windows energy ratio is not stable. Here a new method based on multi-time windows energy ratio is proposed. Combining with automatic quality control and phase-domain first arrival estimation technique, our method performs perfectly on seismic records of normal S/N ratio. In the computational process of conventional sliding time windows energy ratio method, first arrivals are often determined by the maximum energy ratio of two adjacent sliding time windows. It is well known that for low S/N ratio data the conventional picking is not effective, and for high S/N ratio data weak reflections are hardly detected. The reason is that first arrival time does not correspond to the maximum energy ratio. Meanwhile conventional method sometime picks local secondary extreme of energy ratio. The new method of multi-time windows energy ratio method takes both maximum and local secondary extreme in consideration. Hence new method promotes the stability and accuracy of first arrival picking. Combined with automatic quality control and phase-domain first arrival estimation, the new method performs well in its application in the middle part of Dzungarian Basin(Northwest China).


Keywords


First arrival time picking; Multi-time windows; Energy ratio; Quality control

Full Text:

PDF

References


Coppen, F. (1985).First arrival picking on common-offset trace collections for automatic estimation of static corrections. Geophysical Prospecting, 6(1), 33, 212-123.

Gu, H. M., Zhou, H.Q., & Zhang, X. Q. (1992). Automatic pick of first arrival time. Geophysical and Geochemical Exploration, 16(2),120-129.

Jiang, Y. L., & Zhong, B. S.(1995). Automatic picking of the seismic first arrival. Computing Techniques for Giophysical and Geochenical Exploration, 17(3),59-67.

Liu, Z. C. (2007). First break intelligent picking technique. Geophysical Prospecting for Petroleum,  46(5), 521-530.

Yang, X. M. (2007). Multi-domain joint attenuation of first arrival time picking error. Geophysical prospecting, 12(2), 22-24.

Zhang, J. H., Zhao, Y., et al. (2002). Seismic first break pickup using wavelet transform and power ratio method. Computing Techniques for Geophysical and Geochemical Exploration, 24(4), 309-312.

Zhang, W., & Wang, H., et al. (2009). The application of statistic energy ratio of transform time windows to the pickup of seismic first arrival wave. Geophysical and Geochemical Exploration, 33(2), 178-180.

Zuo, G. P., Wang, Y. C., & Shui, R. L.(2004).An improved method for first arrival pickup using energy ration. Geophysical Prospecting For Petroleum, 43(4), 345-347.




DOI: http://dx.doi.org/10.3968%2Fj.est.1923847920130601.3658

Refbacks

  • There are currently no refbacks.


Reminder

If you have already registered in Journal A and plan to submit article(s) to Journal B, please click the CATEGORIES, or JOURNALS A-Z on the right side of the "HOME".


We only use three mailboxes as follows to deal with issues about paper acceptance, payment and submission of electronic versions of our journals to databases: caooc@hotmail.com; est@cscanada.net; est@cscanada.org

Copyright © 2010 Canadian Research & Development Centre of Sciences and Cultures
Address: 730, 77e AV, Laval, Quebec, H7V 4A8, Canada

Telephone: 1-514-558 6138
Http://www.cscanada.net Http://www.cscanada.org

E-mail: est@cscanada.net est@cscanada.org