I.Yu. Nikolaeva, А.Yu. Bychkov

Moscow State University, Moscow, 119992

Sampling of gas and liquid phase of Mutnovski volcano thermal springs was lead for several thermal fields: Donnoe, North-Mutnovski and Dachnie, and also for two wells of Mutnovskaya plant. For a sampling from springs specially designed installation, for holes - a standard division for separation of vapor-water mixture was used. In tests have been certain a contents of a boron and sodium. On sodium the correction on pollution of a condensate by drops of a solution has been injected. Results have shown, that at sampling from holes the boron is reallocated in a separator, thus coefficients of allocation are close to experimentally certain at temperature of sampling. For thermal springs the contents of a boron in condensates essentially above balance and there is no in equilibrium with a liquid phase. Tall concentration of boron in gas are determined by boiling of a hydrothermal solution on the big depth with the separation of vapor and its arrival to a surface. In this case it is possible to use a boron concentrations in gas for an estimation of temperature of gas-liquid separation. For North-Mutnovski springs the calculation made 310оС, for Donnoe 260оС. It is possible to use boron gas-liquid distribution coefficient for an estimation of an enthalpy of deep-seated fluids.