Effective velocities artifacts caused by floating datum and compensation methods
https://doi.org/10.31660/0445-0108-2021-5-69-84
Abstract
Seismic data processing from a floating datum is accompanied by difficulties in estimating effective velocities. These difficulties are associated with the roughness of the datum surface, which, if ignored, leads to artifacts in the estimated effective velocities. The study presents the results of a quantitative analysis of the distortion of effective velocities with model data, as well as the technique to minimize the distorting effect of the elevation on effective velocities. The essence of the method is bringing the sources and receivers within one CDP to a local constant level. This approach has been tested on modeled and real data. It showed a significant reduction in the effect of floating level roughness on kinematic parameters. At the same time, there is no need to modify the processing flow whatsoever.
About the Authors
A. V. Novokreschin
Tyumen Petroleum Scientific Center LLC
Russian Federation
Russian Federation
Aleksey V. Novokreschin, Senior Expert
Tyumen
D. S. Rakivnenko
Tyumen Petroleum Scientific Center LLC
Russian Federation
Russian Federation
Dmitry S. Rakivnenko, Head of the Department
Tyumen
Y. A. Ignatieva
Tyumen Petroleum Scientific Center LLC
Russian Federation
Russian Federation
Yana A. Ignatieva, Chief Specialist
Tyumen
I. V. Musatov
Tyumen Petroleum Scientific Center LLC
Russian Federation
Russian Federation
Ilya V. Musatov, Head of the Department
Tyumen
I. I. Karimov
Tyumen Petroleum Scientific Center LLC
Russian Federation
Russian Federation
Ilfat I. Karimov, Chief Specialist
Tyumen
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Review
For citations:
Novokreschin A.V., Rakivnenko D.S., Ignatieva Y.A., Musatov I.V., Karimov I.I. Effective velocities artifacts caused by floating datum and compensation methods. Oil and Gas Studies. 2021;(5):69-84. (In Russ.) https://doi.org/10.31660/0445-0108-2021-5-69-84
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