Науковий вісник НГУ

Seismic data processing methodology: southern cutoff part of Dnieper-Donets basin case study

User Rating:  / 0

Details

Category: Geological sciences

Last Updated on Thursday, 10 July 2014 14:06

Published on Thursday, 10 July 2014 11:04

Hits: 4044

Authors:

V.D. Petruniak, Taras Schevchenko National University of Kiev, postgraduate student, Kiev, Ukraine

Ye.V. Ustenko, Taras Schevchenko National University of Kiev, postgraduate student, Kiev, Ukraine

Abstract:

Purpose. Development of the optimal methodology and of seismic data processing and creation of processing graph for Southern cutoff part of Dnieper-Donets Basin, that provides more effective way of suppress interference of different regular and irregular noise waves and to determine kinematic (arrival time) and dynamic (amplitude of signals) wave characteristics.

Methodology. Using Paradigm Geodepth software package analysis of main processing procedures and their impact on the quality of resulting material was carried out. Developed seismic data processing graph includes standard procedures on field data input and creating project database. At the next stage, it is recommended to apply a priori static corrections, which is followed by editing of initial seismograms and refining of amplitudes recovery procedures, followed by estimation of main characteristics of wave field. Further, an a priori time stack data is formed, analysis of static corrections is carried out. Completing the latter procedures, minimal phase deconvolution of initial data is carried out. After applying static corrections we carry out the common depth point stacking, flexible band filtering, and amplitude equalization of common depth point stacking data. Final step is coherence filtration, adjustment of migration velocities and migration itself.

Results. Methodology of seismic data processing is being proposed. The methodology allows to quality and time duration of data processing. Advanced processing graph was developed. It can be adapted to different types of 2D and 3D seismic data (different acquisition geometry, spectral composition, source power, equipment decisions etc.). Methodology for optimization of seismic data processing graph based on seismic geological models is being proposed to enlarge quality of seismic data. Proposed methodology can be used for seismic data processing at other fields of the Southern cutoff part of Dnieper-Donets Basin for higher resolution of acquired data and processing optimization.

References:

1. Jones, I.F., (2008), Prestack Depth Migration and Velocity Model Building, Society of exploration geophysicists. 853 p.

2. Cox, M., (1999), Static Corrections for Seismic Reflection Surveys, Society of Exploration Geophysicists. 534 p 

3. Yilmaz, Öz (2001), Seismic Data Analysis, Society of Exploration Geophysicists. 837 p.

4. Sheriff, R.E., Geldart, L.P., (1995), 2nd Edition, Exploration Seismology, Cambridge University Press.

5. Biondi, B., (2006), 3D Seismic Imaging, Society of Exploration Geophysicists. 204 p.

6. Лісний Г.Д. Використання моделі анізотропного середовища для аналізу сейсмічних зображень геологічних об’єктів / Лісний Г.Д. – К.: Київський університет, 2002. – 136 с.

Lisnyi, G.D. (2002), Vykorystannia modeli anizotropnoho seredovyshcha dlia analizu seismichnykh zobrazhen heolohichnykh obiektiv [Application of the Anisotropic Media Model for Analysis of Seismic Images of Geological Objects], Kiev University. Kiev, Ukraine.

7. Bancroft J. (2007), A Practical Understanding of Pre- and Poststack Migration, University of Calgary. 362 p.

8. Воскресенский Ю.Н. Построение сейсмических изображений / Воскресенский Ю.Н. –  М.: РГУ нефти и газа, 2006. – 116 с.

Voskresensky, Yu.N. (2006), Postroyrniye seismicheskikh izobrazheniy [Seismic Imaging], Moscow, Russia.

2014_3_petruniak
2014-07-08  542.86 KB  1085

• < Prev
• Next >