Abstract:

It is difficult to understand the internal structure, the reservoir space distribution,pore types,the relation between reservoir development zones and the localities of structures of fractured reservoirs only using seismic and well log data.But imaging and nuclear magnetic resonancelog can help us to get good results.Based on the data of drilling,log,well log,well test and core,core calibration and graduation log data were used to set up log response and make rock discrimination, then use acoustic image to identify fractures,pores and cavities as well as their efficiency, finally use nuclear magnetic resonancelog data to set up well log interpretation model, quantify reservoir parameters and identify the fluids in reservoirs. This method was used in the assessment of carbonate resevoirs of Chengbei 30 buried hill,the results are satisfactory.

Key words: nuclear magnetic resonance, imaging log, fractured reservoir, carbonate, Chengbei buried hill