دور فك الثني بالتكديس في إضعاف السايزمية المتكررة على مثال منطقة الرصافة, وسط سوريا

Authors

  • نديم أحمد

Abstract

The presence of multiples on seismic data has obscured the recognition of primary reflection events of interest. Post-stack deconvolution was carried out using final-stacked seismic data. The predictive deconvolution technique is used for multiples suppression. The parameters were computed from autocorrelation functions and tested on different panels of the seismic sections. The test includes mainly the prediction distance and operator length to select the best parameters required to attenuate the existing multiples. The obtained sections were compared with the final sections before post-stack deconvolution was applied. The tested parameters gave very encouraging results by bringing out a distinctive reflector and suppressing multiples. Complete suppression of multiples is the desired result from the application of the selected deconvolution filter; however, multiples seem to exhibit a range of properties and so only those multiples which conform to the predicted assumptions were removed.

يرمي هذا البحث إلى إضعاف الأمواج المتكررة Multiples , التي تعيق إظهار الانعكاسات الأولية Primary reflection events  , من خلال تطبيق تقنية فك الثني Deconvolution , لما بعد التكديس للمعطيات السايزمية.

يتضمن البحث حساب باراميترات محددة بإجراء عملية الارتباط الذاتي Autocorrelation , على نطاقات مختلفة من المقاطع السايزمية, بما فيها تقدير المسافة المتوقعة Offset , وطول العامل Operator  , لاختيار أفضل وأنسب الباراميترات, التي نحتاجها لإجراء فك الثني.

أوضحت هذه الدراسة من خلال مقارنة المقاطع النهائية المكدسة Final Stack , التي تم الحصول عليها مع المقاطع الزمنية Time seismic sections , قبل عملية التكديس اللاحق Post-Stack , أن تحسنا ملموسا قد طرأ لصالح الانعكاسات الأولية , على الرغم من أن إضعاف الأمواج المتكررة ليس بالأمر السهل, لاحتوائها على مدى واسع من الخواص , مما يعرقل إلى حد ما الوصول إلى ما نصبو إليه, ويتيح الفرصة للتخلص من المتكررات, التي تتوافق مع القياسات المطبقة.

Downloads

Published

2018-12-04

How to Cite

1.
أحمد ن. دور فك الثني بالتكديس في إضعاف السايزمية المتكررة على مثال منطقة الرصافة, وسط سوريا. TUJ-BA [Internet]. 2018Dec.4 [cited 2024May2];28(1). Available from: https://journal.tishreen.edu.sy/index.php/bassnc/article/view/4996

Issue

Vol. 28 No. 1 (2006): العلوم الأساسية

Section

Articles

License

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

The authors retain the copyright and grant the right to publish in the magazine for the first time with the transfer of the commercial right to the Tishreen University Journal -Basic Sciences Series  

 Under a CC BY- NC-SA 04 license that allows others to share the work with of the work's authorship and initial publication in this journal. Authors can use a copy of their articles in their scientific activity, and on their scientific websites, provided that the place of publication is indicted in Tishreen University Journal -Basic Sciences Series .  The Readers have the right to send, print and subscribe to the initial version of the article, and the title of Tishreen University Journal -Basic Sciences Series   Publisher

 

journal uses a CC BY-NC-SA license which mean

You are free to:

  • Adapt — remix, transform, and build upon the material
  •  
  • The licensor cannot revoke these freedoms as long as you follow the license terms.

 

  • Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
  • NonCommercial — You may not use the material for commercial purposes.
  • ShareAlike — If you remix, transform, or build upon the material, you must distribute your contributions under the same license as the original.
  • No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.