the Thermal stream in danii. Estimations of a thermal stream

you are: the Thermal stream in danii

Estimations of a thermal stream on six sites. Drilling has been spent to the period between 1894 and 1907 on site Gryondals-eng around Copenhagen for reception of the scientific and hydro-geological information. The chink has reached depths of 861 m. exact temperature measurements Have been done. Detailed measurements were carried out through identical intervals of 50 m on depths from 100 to 850 m and on depth of Measurement of 861 m. have been executed as equilibrium benthonic (i.e. At a face) skvazhinnye temperature measurements. 3-4 various thermometers which indications differed no more than on ±0,1 °s were usually used. It has been noticed, that within accuracy of measurements the temperature gradient with depth does not vary. In the range of depths of breed of the top horizons of 100-861 m are presented by a chalk and limestone, and more low about 530 m marble and limestone. A constant temperature gradient and litologija specify that the factor of heat conductivity of these breeds is practically constant. If we use function of dependence of factor of heat conductivity from depth we will receive for an interval of depths 100 - 800 m average factor of heat conductivity 2,02 Vt / (м*К). The average temperature gradient defined by a method of the least squares, makes 21,5 To/km. The thermal stream calculated as product of the measured average vertical temperature gradient and average factor of heat conductivity [estimated value 2,0 Vt / (м*К), is equal, thus, 43 мВт/м2.

Not speaking about a deep interval of 0-200 m, such exact measurements as executed in the end of XIX - the beginning of XX century in Gryondalseng, until recently was not. In five oil and gas prospecting chinks drilled in northern Jutland in 1974-1976, carefully measured temperatures in a face of chinks on depths of an order of 1000 m. These results are received can be used and in our researches. Measurements have been executed in 5-8 hours after the termination of circulation of a fluid. The calculated equilibrium temperatures on 3-6 °s above the measured values. Average temperature gradients between a surface and investigated depths, and by means of function have been defined to (values of a thermal stream are received. In Denmark the average annual temperature of soil makes 7-9 °s. In gradient calculations the temperature 8 °s is used. Except for several tens metres, in all five chinks rocks are presented by a complex of limestones and a chalk Danish (verhnemelovogo) age.