PROBLEMS OF HERMETICALITY OF WELLS FOR LEACHING IN “TETIMA” MASSIF AND REPAIRING CONSTRUCTION IN CASE OF UNHERMETICAL COLUMN PIPES 9 5/8"

As it is known, the extraction of rock salt from deposit “Tetima”, Majevica, performed is by controlled leaching in the underground chambers positioned diply in the salt deposit. The connection between the underground chamber, that represents the basic production unit in the primary salt production and technological installations on the surface, is through a deep wellbore, which is an integral part of the leaching system.