RELATIONSHIP BETWEEN THE GENERATING AMOUNT AND GATHERING SCALE OF OIL AND GAS AND THE BACKGROUND FIELD OF REGIONAL GEOCHEMISTRY

Based on the changing characteristics of regional geochemical background values in basins,the mean content of background values in different depositional basins is disscussed as a focal point in this paper in order to evaluate the generating amount of oil and gas in basins and to predict the sca1e of oil/gas distribution and the favoriable zones of oil/gas accumulation in basins.