The Analysis Of The Relations Of The Volcanic Rock Lithology And Gas

The igneous rock is the rock that the underground hot melting magma invading stratum or blowing off the earth's surface and then through condensing, piling up and solid. Igneous rock distributes extensively, and some layers' storing condition is good, and becomes one of the most important types of reservoir at present.During recent years of oil exploration, high yield igneous rock oil or gas reservoir have been found in China and other countries. Lithofacies and lithology control reservoir's formation and growth, so recognition of lithology and lithofacies is critical to igneous rock well logging evaluation.The paper gathered deep layers well logging materiaK record well materiaK core and cutting material of 27 wells in the Daqing district, recognized the different type of igneous rock according to their log response feature, and made a large number of cross plot, then carefully chose several of them which works better igneous rock lithology recognition. Made pattern recognition procedure using computer to recognize lithology, synthetical many logging parameter to identify igneous rock lithology. And then on the basis of recognizing lithology, the paper analyzed the lithofacies recognition law in this district. At last combining oil test material, the paper analyzed the signature of igneous rock reservoir and the relations of oil and gas and lithology and lithofacies of igneous rock in this district.