FORMATION AND DISTRIBUTION OF OIL AND GAS POOLS IN BOXING AREA OF THE DONGYING DEPRESSION, THE BOHAIWAN BASIN

This paper discussed the formation conditions, types and distribution characteristics of oil and gas pools in the southwestern part of the Dongying Depression, the Bohaiwan Basin.Affected by the special geologic background, the study area has good conditions for pool formation and has a variety of oil and gas pools.There are many excellent reservoirs in the area, but the oil and gas sources are not sufficient.Oil and gas in the area are concentrated in the positive structural belts controlled by faults and paleo-up-lifts.The oil and gas reservoirs are deep and relatively oil-enriched in the east and the north parts, and are shallow and relatively gas-enriched in the west and the south parts.The reservoirs of hydrocarbon have obvious zonation, and tectonic background and hydrocarbon-source conditions have important controlling effects on the enrichment of oil and gas.