Agitating – Mortar mixer type – Movable stirrer
Patent
1989-12-18
1991-02-05
Jenkins, Robert W.
Agitating
Mortar mixer type
Movable stirrer
366263, B28C 508, B01F 512
Patent
active
049899872
ABSTRACT:
A mixing apparatus is provided for mixing slurries, particularly high density, high viscosity fracturing fluid slurries containing a large proportion of proppant material. A mixing tub has a generally round horizontal cross-sectional shape. A relatively large, low-speed rotating agitator is utilized to mix the slurry. The design of the agitator is such that a radially inwardly rolling toroidal shaped slurry flow zone is created adjacent the upper surface of the slurry within the tub. A stream of clean fracturing fluid is introduced into the tub near the center of the toroidal shaped flow zone. Dry proppant material is introduced into the tube and carried by the radially inwardly rolling flow into contact with the clean fracturing fluid. Foraminous baffles, preferably constructed from expanded metal sheets, are radially oriented within the tub to reduce rotational motion of the slurry within the tub without causing dropout of proppant from the slurry. A double suction vertical sump pump is utilized to pump the slurry from the tub.
REFERENCES:
patent: 3461803 (1969-08-01), Stothoff
patent: 4415267 (1983-11-01), Hill
patent: 4453829 (1984-06-01), Althouse
patent: 4499562 (1985-02-01), Campolini
patent: 4834542 (1989-05-01), Sherwood
Exhibit A--several pages from a brochure for Galigher double suction vertical sump pumps, 9/1987.
Exhibit B--Booklet entitled "Liquid Agitation", prepared by Chemineer.Kenics, Houston, Texas, 12/75.
Berryman Leslie N.
Horinek Herbert J.
Phillippi Max L.
Prucha David A.
Reidenbach Vincent G.
Beavers L. Wayne
Duzan James R.
Halliburton Company
Jenkins Robert W.
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