Improving the Reliability of Synthetic S-Wave Extraction Using Biot-Gassman Fluid Substitution
Penulis/Author
Dr. Sudarmaji, S.Si, M.Si. (1); Prof. Dr. Sismanto, M.Si. (2); Drs. Waluyo, M.Sc., Ph.D. (3); Prof. Dr. Bambang Soedijono Wiriaatmadja (4)
Tanggal/Date
2016
Kata Kunci/Keyword
Abstrak/Abstract
Usage of Castagna’s relation by mean the P-wave log directly in estimation of the S-wave log gives a large error to the original S-wave log so that the result is not reliable for further analysis. This paper offers new method for S-wave log estimation based Castagna’s relation which is combined with fluid replacement modeling method based on Biot-Gassman substitution and the use of petro physical data as input. The S-wave log result of the offered estimation method has a small error to the original S-wave log so that more reliable and accurate for further analysis.The offered method could be used for S-wave log estimation in various lithology such as sand, limestone, dolomite and shale.The S-wave log result of the offered estimation method has successfully used for cross plot analysis of Vp/Vs ratio as function of acoustic impedance and Gamma Ray for delineation of sandstone bearing hydrocarbon from two different field.
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