Device for floccing a mixture produced during oil or gas well drilling

A device for floccing a mixture produced during oil or gas well drilling, comprising a vertical tank having a central axis, a vertical peripheral wall extending around said central axis, a bottom located at a lower end of said peripheral wall, said tank having a height which is significantly greater than the cross-section of said tank;

• a fill line for introducing the mixture into an interior of said tank and extending substantially close to said peripheral wall at one side of said central axis, said fill line having a lower inlet connectable to a source of the mixture and an upper outlet so that the mixture travels upwards from said lower end to said upper end and then into the interior of said tank;
• an exit line extending substantially close to said peripheral wall at an opposite side of said central axis and having an upper inlet and a lower outlet so that a clean fluid flows through said exit line from said upper inlet to said lower outlet to be cycled down a wellhead;
• a baffle arranged in said tank and separating one part of said tank from another part of said tank so as to provide downward movement of the mixture before exiting, said baffle extending substantially vertically and being located substantially along said central axis in the middle of said tank, said fill line, said baffle, and said exit line extending vertically and substantially parallel to one another.