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| STATIC CORRECTION IN TIME-LAPSE SEISMIC DATA PROCESSING |
| SHANG Xin-min |
| Geophysical Research Institute of Shengli Oilfield Branch, China Petroleum & Chemical Corporation, Dongying 257022, China |
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Abstract Time shift,amplitude,frequency and phase difference are main factors influencing time-lapse seismic data processing.The elimination of the time difference is the primary step in non-repeatable time-lapse data processing.Based on the acquisition parameter analysis of two seismic data,the authors have solved the static correction problem caused by the absence of measured elevation in old seismic data.Joint tomographic inversion of the two time-lapse data is used to obtain an uniform near surface model.As a result,the application of calculated statics removes the time shift of the two data effectively,which has laid a good foundation for the subsequent processing.
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Received: 06 May 2013
Published: 10 February 2014
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