f P and S well seismic attenuation studies in a fractured reservoir

The attenuation studies in this paper are based on borehole seismic data acquired in February 1989 in a vertical producing well in the Romaskhino field in Tatary (Republic of Russia). The well produces about 2. 5m3 (21 barrels) per day from a lower carboniferous (Bashkirian) carbenate reservoir within the 788-860 m depth interval. Average total porosity is 8 .4%, . Production is controlled by vertical fractures or joints .