Reservoir Fluid Contact Detection Using Continues Wavelet Transform of Resistivity Log
Subject Areas :امیر ملا جان 1 , مصطفی جاوید 2 , حسین معماریان 3 , بهزاد تخم چی 4
1 - University of Tehran
2 - University of Tehran
3 - University of Tehran
4 - University of Tehran
Keywords: hydrocarbon reservoir reservoir fluid contact continues wavelet transform resistivity well log,
Abstract :
Exact assessment of reservoir fluid contacts and distribution is an important part of reservoir characterization. Reservoir fluid contacts may be detected by petrophysical interpretations, well testing, special core analysis and seismic inverse modeling techniques. In practice, due to noneconomic and unavailability of well test and seismic data, wire line log data are commonly used. Since these contacts affected by complexity of reservoir properties, thickness of reservoir rocks, and some factors such as vug effect, fractures and mud filtrate invasion, it is essential to find a way for reducing such these factors. The present study uses data related to three wells of an oil field in southwestern Iran to detect oil-water contact by continues wavelet transform of resistivity log. The results obtained from this method are compared with well test responses to validate the proposed algorithm. The results show that this method is capable to detect fluids contact accurately