For heating surface equipment of water-injection well it is suggested
to use soil heat from 3 m depth. For this purpose convection heat exch
angers KT-<(III)under bar>-114 and KT-C-48 have been developed, Instal
lation of heal exchangers prevents freezing of injection wellhead in e
mergerncy stoppage of injection during 5 days. Success of the suggeste
d technology makes up 100%. Service life of the equipment is 7 years.
Designs of the heat exchangers are compatible with conventional wellhe
ad equipment of injection wells and they are self-contained systems, w
hich do not require permanent servicing and external power sources for
heating.