Research And Meaning Of Middle-seated And Deep-seated Radiation Abnormity In Ordos Basin

exploration of world's energy resource mine show that cause of formation and distributing of sedimentary mine such as oik gas, coal and uranium resources which form and accumulate in the process of sedimentary basin's evolvement and reconstruct are interrelated and interactional Various energy resources mine not only exist in the same basin but also accumulate in the same basin ,such as distribution stratus of sandstone-type uranium deposit have close connection with distribution stratus of oik gas, coal, oil coming from coak gas coming from coalOrdos basin is a large craton superimposed basin which locate in the west of North China Basin It is second-biggest inner-land basin, which is also our country's main energy resource base Ordos basin have various energy resources mine,basin is prolific in oik gas, coal and uranium resources? main accumulation period of oik gas, coal and sandstone-type uranium resources form in later period of early cretaceous Ordos basin is native laboratory and ideal area which research in coexistence and accumulation of various energy resources mine,Considering leachable exploitation , Former research in uranium deposit in Ordos basin focus on Cretaceous stratum and Jurassic stratum which is less than 500m attention in deep radioactive abnormity and mudstone radioactive abnormity are lessThrough universal research and analyse of abundant oil-gas radioactive well-logging, utilize natural gamma graph to found layer of radioactive abnormity Result show that radioactive abnormity exist in not only Mesozoic stratum which less than 500m but also Triassic, permian statum which are sereval thousands deep select two emphasis area which area are 30800 km and 28050km , read more than 300 well's gamma value which amount to 800 group , protract 12 graph of distribution graph of gamma abnormity which exist 6 stratumsAt the same time , at the different gamma value layer, select different lithology sample to test radioactive content-K U Th. Result show change of gamma value in research area were mainly worked by change of uranium content, there have plus correlativity , radioactive abnormity have little relation with other two radioelement-Th K Through well data can build connection formula which exist in radioactive abnormity and contend of uranium, so make it possible that compute uranium content through directly utilizing radioactive well-logging data.,Accumulation of uranium can accumulate to mine besides , accumulation of radioelement in deep dark mudstone can produce heat which can accelerate maturation of hydrocarbon generation rocks Research show that augment of rock layer which enrich in radioactive elements can arose augment of neighboring area's ground temperature., Analysis show that uranium have maximal contribution to heat which radioactive element generate In the process of heat evolvement which happened in same temperature, uranium which exist in rocks have great influence in heat evolvement uranium element distribute in wide area and many stratums in Ordos basin, so result of heat which radioactive element generate can accelerate maturation of hydrocarbon generation rocksConfirmation and research of basin's medium-deep stratum which enrich in uranium have important meaning for formation and conservation of ancient uranium in geologic history and uranium source of upper uranium deposit...