PREDICTION METHOD OF RESERVOIR FRACTURES IN THE CHENGBEI 30 BURIED-HILL OF SHENGLI OILFIELD

As fossil buried-hill reservoirs have complex lithology and have experienced weathering and leaching as well as multiple tectonism, the identification and evaluation of their housing space is always a geological puzzle to be overcome. The evaluation of fossil buried-hill fracture reservoirs is especially difficult. Taking the Lower Paleozoic carbonate rocks and the Archaeozoic gneiss reservoirs in the Chengbei 30 Fossil Buried-hill as objects of study, the authors presented creatively a set of evaluation and prediction methods for buried-hill fracture reservoirs through comprehensive study by means of the quantitative core description, the laboratory analysis, the logging analysis, the seismic correlation analysis and velocity analysis, etc. These methods have directive significance for the study of the same kinds of reservoirs.