Value of researches of a thermal stream. Blocking breeds

you are: Value of researches of a thermal stream

Improbably, that in modern volcanic areas there were absolutely impenetrable blocking breeds. Vulkanizm it is always connected with the tectonic movements causing crushing of breeds. All existing developed steam systems settle down in areas, where superficial displays of geothermal activity, such as hot sources, fumaroly or solfatary, testify to existence of the open cracks leaving on depth. Representation about impenetrable breeds of a roof is received on well studied structures in which adjournment of hydrocarbons are formed. Contrary to the saved up hydrocarbons energy of geothermal displays constantly replenishes from a natural source of heat (namely from a hot magmatic body) during all period of existence. Undoubtedly, optimum conditions for a production of steam arise there where impenetrable blocking breeds cut off konvektivnye the streams causing losses of hot fluids and heat. However degree of tightness of the roof, necessary for accumulation of geothermal energy is, much less, than in case of oil pools. It even is more probable if to admit, that tanks of natural steam fields are filled by hot water. It proves to be true also data temperature karotazha in chinks. The water temperature in the tank should be close to a boiling point at pressure existing on given depth. When buritsja the chink, pressure can decrease both in it, and in the next breeds. Pressure decline causes reduction of temperature of boiling, therefore, when pressure falls to that level at which the boiling point corresponds to tank temperature, steam is formed.

On an absciss three scales are given: on the first depth is postponed; the temperature gradient which is a necessary condition of a thermal mode of a site between a terrestrial surface and a tank roof that in the tank the boiling point was reached is put on the second; the third scale shows the attitude of an abnormal thermal stream to normal, calculated on a temperature gradient for breeds of a roof with factor of heat conductivity 2,1 Vt / (м*К).