HTI ANISOTROPY RESEARCHING RESULTS USING FULL-AZIMUTH SEISMIC DATA PROCESSING TOOLS AND AN EXTENDED WELL LOGGING COMPLEX ON THE EXAMPLE OF THE FAMENNIAN DEPOSITS OF THE YUGOMASHEVSKOYE FIELD
A.S. Dushin1,2, A.N. Lubochko1, I.S. Krivoshchekov1, A.N. Inozemtsev3
1 ООО RN-BashNIPIneft”, Ufa, Russia
2 UFA State Petroleum Technological University, Ufa, Russia
3 ООО Roxar Paradigm - Software Solutions, Moscow, Russia
Keywords: Organogenic structures, facies heterogeneity, carbonate rocks, ES360 full-azimuth angular migration, horizontal transverse (HTI) anisotropy, acoustic scanner, diffractive and scattered components, fractures, vugginess
Abstract
The work shows a solution to the problem of searching for cavernous-fractured zones, as well as zones that determine reservoir heterogeneity in the Frasnian-Famennian deposits, of one of the licensed areas of the Republic of Bashkortostan. This article describes the application of complex approach to the study of azimuthal horizontal transverse isotropy of rock, using well data and modern methods of processing areal seismic data for carbonate deposits associated with the development of organogenic structures. The results of using the full-azimuth angular migration technology are described.
Implementation of high-tech approaches in the exploration area using full-azimuth seismic data processing, spectral decomposition, AVA/AVAZ inversion and complex analysis of dynamic characteristics of the wave field in combination with well logging and core data made it possible to identify the zones of derated carbonate reservoir with changes in the characteristics of the rock skeleton, the presence void space of the porous-cavernous-fractured type and zones of lithological replacement and secondary processes, thereby reducing the risks associated with subsequent production drilling.
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