Agitating – Stirrer within stationary mixing chamber – Rotatable stirrer
Patent
1983-05-04
1985-05-14
Jenkins, Robert W.
Agitating
Stirrer within stationary mixing chamber
Rotatable stirrer
B01F 708
Patent
active
045168601
ABSTRACT:
A device for mixing of liquids and particulate solids, such as for instance a drilling liquid and drill cuttings on a drilling location. This drilling location can be a deep well drilled for gas and/or oil by means of a drilling tower on-or off-shore. The invention provides an elongated, rectangular open mixing tank (2,3,4,5) on which a series of replacable agitating units (6a, 6b) having their axes (22a, 22b) in one vertical plane is mounted. The agitating devices (6a, 6b) each comprise a unit having a rotatably driven head (21a, 21b) carrying two support arms (23a, 23b; 24a, 24b) of unequal length which each support a mixing screw (27a, 27b, 28a, 28b) projecting into the mixture of liquids and particulate solids. This arrangement provides a thorough mixture of the drilling liquid, having a high viscosity and high specific gravity, with the drill cuttings frequently comprising heavy clay and/or rock particles.
REFERENCES:
patent: 3301323 (1967-01-01), Parsons
patent: 3450390 (1969-06-01), Nauta
patent: 3533604 (1970-10-01), Sabelis
patent: 3602486 (1971-08-01), Nauta
patent: 3612492 (1971-10-01), Nauta
Entrop Willem
van der Laan Jan G. J.
Hosokawa-Nauta B.V.
Jenkins Robert W.
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