CHARACTERISTICS OF THE TERTIARY IGNEOUS ROCKS AND INVESTIGATION OF THEIR RELATIONSHIPS WITH HYDROCARBON IN HUANGHUA DEPRESSION

Through the study of occurrences, reservoir properties, and oil-bearing properties of tens of igneous rock bodies discovered in Tertiary in Huanghua Depression, it is concluded that igneous rocks in this area are mainly consisted of extrusive and intrusive facies, and distributed in the south, middle and north. The age of igneous rocks become older from the south to north. Different igneous rocks have different geophysical responses, which can be used as identification marks. The formation of igneous rocks are connected with basin structure movement, oil-gas generation, migration and accumulation. Six types of igneous rock reser- voirs have been discovered in this area. This research will be a reference for the exploration of igneous reservoirs in this area.