Geology, geography and global energy

Scientific and Technical Journal

Some features of the mass transfer elements in phase transitions of water in natural gas-vapor systems

2015. №4, pp. 36-47

Petrenko V.I. - D.Sc. in Geology and Mineralogy, Professor, North-Caucasian Federal University, 16/1 Kulakov ave., Stavropol, 355009, Russian Federation,

Mercheva V.S. - C.Sc. in Engineering, Associate Professor, Astrakhan State University, 1 Shaumyan sq., Astrakhan, 414000, Russian Federation,

Krasilnikova O.V. - C.Sc. in Engineering, Head of Scientific Research at the Chemical Analytical Laboratory, Ltd "Gazprom mining Astrakhan",

Petrenko I.N. - Post-graduate student, North-Caucasian Federal University, 16/1 Kulakov ave., Stavropol, 355009, Russian Federation,

At the beginning of the last century it was discovered the amazing ability of natural gas to vaporize liquid water and turn it into steam at any temperature and pressure parameters to within the critical temperatures for pure water 374 В°C and 400-600 В°C brine. Therefore, in the gas-saturated pore space of reservoir rocks and gas condensate deposits always present steam-gas mixture, the amount of water vapor depends on the temperature, salinity and pressure of residual water. The article shows that the development of gas and gas condensate fields in the world with any thermobaric parameters and any residual water with mineralization mined gas condensing get fresh water. Thus, in the mineralization of residual water on the Urengoy gas condensate field 18120,8 mg / dm salinity condensation water is 191,9 mg / dm , while for the Hassi R'Mel field in the mineralization of residual water 314 247 mg / dm salinity condensation water is 289,97 mg / dm . Thus, the difference in the mineralization of the residual water and condensation from 94,4 to 1083,7 times condensation water salinity is in the range from 289,97 to 191,9 mg / dm , i.e. It does not extend beyond 400 mg / dm . The condensation water detected following elements: Cl , РќРЎРћ , SO , CР° , Mg , Na , K , Al, Fe, Mn, Ni, Co, Ti, V, Cr, Mo, Zr, Cu, Pb, Zn, Ba. It is found that when the conjugation of natural gas with water, any salinity in the gas phase proceeds fresh relatively high moisture content of trace elements as compared to the saline water.

Key words: вода конденсационная, вода океанская, массоперенос, микроэлементы, коэффициенты распределения и фракционирования, condensation water, ocean water, mass transfer, trace elements, distribution and fractionation coefficients