Fluid handling – Self-proportioning or correlating systems – Mixture condition maintaining or sensing
Reexamination Certificate
2007-09-18
2007-09-18
Krishnamurthy, Ramesh (Department: 3753)
Fluid handling
Self-proportioning or correlating systems
Mixture condition maintaining or sensing
C137S114000, C137S487500, C700S031000, C700S285000
Reexamination Certificate
active
11003727
ABSTRACT:
Systems and methods are disclosed for controlling a viscosity of a fluid. The control system includes a controller controlling an input to an actuator and an observer estimating the viscosity of the fluid. The controller includes an input, and the actuator is capable of controlling a viscosity of a fluid by delivering a gelling agent to the fluid. The observer and the controller are coupled together. The observer may be used to determine the viscosity at the current time from a sensor and filter combination that lags the actual viscosity value. The estimated sensor and filter output may be then compared to the sensor and filter output to make corrections to the estimate of the viscosity of the current time.
REFERENCES:
patent: 4420008 (1983-12-01), Shu
patent: 4982756 (1991-01-01), Scribner
patent: 6648082 (2003-11-01), Schultz et al.
patent: 6681189 (2004-01-01), Morrison et al.
patent: 2002/0198668 (2002-12-01), Lull et al.
patent: 2346880 (1973-09-01), None
patent: 06154570 (1994-06-01), None
patent: WO 83/00101 (1983-01-01), None
Baker & Botts L.L.P.
Halliburton Energy Service,s Inc.
Krishnamurthy Ramesh
Wustenberg John W.
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