The Relationship Between Volcanic Activity And Pool In The West Of Dongying Depression And Yangxin Low-lying Billabong

Studying the characteristics of carbon dioxide reservoir and hydrocarbon pool which is intergrowth carbon dioxide reservoir, the dimensional connection among inbreaking igneous rocks, source rocks and these hydrocarbon pool and nonhydrocarbon natural gas reservoir, the accumulation mechanism which volcanic activity bring to them through analyzing large quantities of data in the west of Dongying depression and Yangxin low-lying billabong, the cognition as follows:First There are three types between inbreaking igneous rocks (embedding volcano channels ) and carbon dioxide reservoir in the west of Dongying depression and Yangxin low-lying billabong, including inbreaking igneous rocks-faults-carbon dioxide (communication )type, inbreaking igneous rocks-carbonate rocks reservoir with carbon dioxide natural gas (contiguity) type and embedding volcano channels -sandstone reservoir with carbon dioxide natural gas(contiguity) type.Second There are three sets of source rocks in the west of Dongying depression and Yangxin low-lying billabong, including the first segment, third segment and forth segment of Shahejie . these source rocks whose R° are under 0.3 percent to 0.5 percent. More of them belong to crudity and lower crudity source rocks. They distribute in well area of Yang 2,5, Yang 25 , Pingfangwang area, Pingnan area, well area of Hua 17, Gaoqing methane reservoir area and the south of Hua 5'swell area, the west of Hua 5 well area just has a little source rocks, but they don't exist in hua 24's well area where carbon dioxide has.Third There are mainly two types among inbreaking igneous rocks, source rocks and hydrocarbon pool and nonhydrocarbon natural gas reservoir in the west of Dongying depression and Yangxin low-lying billabong, namely inbreaking igneous rocks(embedding volcano channels) - source rocks- faults-hydrocarbon and nonhydroncarbon pool(communication) type and inbreaking igneous rocks - faults -carbon dioxide reservoir (communication) type.Fourth The main factor which volcanic activity affect source rocks to invert oil and hydrocarbon natural gas is magma's high temperature, the large number of oil and hydroncarbon natural gas forms and enrich in the reservoir when magma intrude circumambient sediment stratum.Fifth There two forms in the research area which supply large quantities of carbon dioxide are inbreaking igneous rocks and embedding volcano channels, but only when magma was cooling and riming the carbon dioxide just release and enrich in a large scale.Sixth Volcanic activity controls the enrichment and form of hydrocarbon pool and nonhydrocarbon natural gas in the research area, but the time which hydrocarbon pool and nonhydrocabon reservoir is different, the former enrich and forms in the stage which magma intrude circumambient sediment stratum, the latter release andenrich just when magma was cooling and riming.