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Blyas E.A., Shavina L.I.

Some approaches to processing and interpretation of borehole seismic observations and results of applications

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Abstract. The paper describes a general approach to the processing and interpretation of borehole seismic observations. The interpretation is advised to be carried out in four stages each solving its own problems. The solution of one of them is considered in greater details - that is the task of regular wave definition from three-component observations. There is an optimization method offered to solve the problem, that specifies the shape and amplitude of a single wave. The optimization is fulfilled with the help of a conjugated gradients' method, the only unknown quantities are time delays, wave amplitudes and shapes find themselves on the eigenvalue numbers and vectors of the symmetrical matrix. The paper shows the examples of software application to VSP data from the Northern Samotlor field. The application of the given approach has given the possibility to obtain deep sections with frequency up to 170 Hz and to predict the productive layer properties in the well vicinity.

Printed reference: Blyas E.A., Shavina L.I. Some approaches to processing and interpretation of borehole seismic observations and results of applications // Vestnik of MSTU. 1998. V. 1, No 2. P. -.

Electronic reference: Blyas E.A., Shavina L.I. Some approaches to processing and interpretation of borehole seismic observations and results of applications // Vestnik of MSTU. 1998. V. 1, No 2. P. -. URL: http://vestnik.mstu.edu.ru/v01_2_n02/articles/05_blyas.zip.

(In Russian, p.20, fig. 3, ref 3, MS Word 95, WinZip)