The nature of the restriction borehole at the opening of thick salt

Key words: mud, the secondary crystallization, beds of precipitation, complications, aging sediment.

This paper examines the nature of the restriction borehole at the opening of thick salt. Raises issues related to complications during drilling in thick beds of precipitation. The article contains a physical-chemical basis of the process of secondary crystallization of salt on the walls of the well, the problem involves the prevention of secondary crystallization by modifying the environment mud. The results can be used to solve the problem of preventing the narrowing of the wellbore due salts crystallization on the walls of the well.