Automatic viscometer

Details Automatic viscometer Automatic viscometer

1982-08-27

1984-11-27

Goldberg, Gerald

Measuring and testing

Liquid analysis or analysis of the suspension of solids in a...

Cleaning or foaming ability

364509, G01N 1114

Patent

active

044844689

ABSTRACT:
An improved rotational viscometer for testing drilling muds is disclosed. In a preferred and illustrated embodiment, a rotatable tubular sleeve is driven by a pulsed stepper motor. The drilling mud couples to a bob of cylindrical shape supported on a shaft. The sleeve is rotated or torqued, applying rotation to the shaft which is monitored by an optical encoder. The stepper motor is driven for a programmable sequence of specific intervals at specific speeds, and the mud coupled rotation at the encoder shaft is observed. The data obtained is scaled to provide an indication of viscosity and other measurements of the drilling mud indicated by an output LED display or other display type as desired. The mud is tested by a specified sequence of test procedures sanctioned by the American Petroleum Institute.

REFERENCES:
patent: 3875791 (1975-04-01), Fitzgerald et al.
patent: 4062225 (1977-12-01), Murphy, Jr. et al.
patent: 4299118 (1981-11-01), Gau et al.
patent: 4299119 (1981-11-01), Fitzgerald et al.
patent: 4352287 (1982-10-01), Orth et al.

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