Liquid purification or separation – Processes – Separating
Patent
1985-03-25
1987-01-06
Adee, John
Liquid purification or separation
Processes
Separating
210788, 210805, 210806, 2102571, 210258, 210297, 2105122, 209311, B01D 3322, B01D 3600
Patent
active
046345353
ABSTRACT:
A mud slurry cleaning method including steps of distributing a mud slurry across an inclined primary separation screen, vibrating the primary screen through selected movement, cycle and frequency to screen out the liquid and selected particles, concurrently changing the geometric shape of the openings of the primary screen through each vibration cycle to free particles as might tend to lodge while concurrently impacting the primary screen at many spaced apart impact points to loosen particles tending to lodge, cyclonically separating the screened mud into a finally cleaned slurry and a thickened slurry including particles originally included in the original slurry, mixing the thickened slurry with a portion of the screened slurry to form a liquified slurry, distributing the liquified slurry across an inclined gleaning screen, and vibrating the gleaning screen as above described to screen out liquid and desired particles while concurrently changing the geometric shape of the openings of the screen and concurrently impacting the screen to loosen particles as above described. Mixing the clean slurry from the hydrocyclone separators with the liquid coming through the gleaned screen for return for use in the wellbore. Also discloses specialized apparatus used in the method.
REFERENCES:
patent: 2312477 (1943-03-01), Pollitz
patent: 2750043 (1956-06-01), Thompson
patent: 2919898 (1960-01-01), Marwil et al.
patent: 3616599 (1971-11-01), Burnham, Sr.
patent: 3684091 (1972-08-01), Wehner
patent: 3988243 (1976-10-01), Huff
patent: 4019980 (1977-04-01), Beery
patent: 4247312 (1981-01-01), Thakur
patent: 4486302 (1984-12-01), Jorgensen
patent: 4568461 (1986-02-01), Aoustin et al.
Adee John
Matthews Guy E.
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