Determination of saturartion coefficient in carbonate reservoirs

Key words: Eastern Siberia, laboratory investigations of core, hydrocarbon saturation index, carbonate reservoir, hydrophobicity.

Use of standard research techniques doesn’t solve the problem of proper definition of hydrocarbon saturation index as well logging resistivity significantly exceeds core resistivity. On the base of the obtained relations “core well logging” and “well logging - well logging” there has been developed algorithm of calculation of hydrocarbon saturation index. The obtained results are typical for carbonate oil-wet reservoirs. There is presented a comparison of obtained results with the results of core investigations (including definition of residual water saturation).