Agitating – Mortar mixer type – Methods
Patent
1994-09-19
1995-08-15
Stinson, Frankie L.
Agitating
Mortar mixer type
Methods
366 17, 366 20, 3661522, 166308, B01F 1504
Patent
active
054413400
ABSTRACT:
An automated density and chemical controller automatically controls the density and chemical proportions of a slurry that is injected into a well during a well fracturing operation. The automated density controller receives from the operator the parameters of the fracturing operation and automatically controls the addition of a proppant to water to produce a slurry with a desired density. The automated density controller measures the incoming flow of water into a blender tub and regulates the delivery of proppant in the blender tub to produce a slurry of the desired density. The performance characteristics of the mechanism used to deliver the proppant are programmed into the controller to enable the controller to regulate the quantity of proppant delivered by controlling the operational speed of the delivery mechanism. The automated chemical controller regulates the addition of chemicals based on the incoming flow rate. The automated density controller also measures the flow of the slurry discharged from the blender tub and, together with the incoming flow rate, calculates the actual density of the slurry. After comparing the actual density with the desired density, the automated density controller calculates a correction factor and recalibrates the performance characteristics of the proppant delivery mechanism. The automated density controller also includes a densiometer for measuring the actual density of the slurry. The density measured by the densiometer is compared with the density calculated by the flow meters to provide an indication of whether the controller is operating correctly.
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P.O.D Brochure Date Unknown (c. 1988).
Technique Helps Extend Cotton Valley Frac by Thomas M. Hopkins II, T. M. Hopkins, Inc., Audis Byrd and R. E. Hyden, Hallibuton Services.
Frac/Blender Unit Lightweight, Automated, Stewart & Stevenson Services, Inc.
Block Diagram, Stewart & Stevenson Services, Inc.
Sales Information Relating to Present Invention.
Baten Robert A.
Cedillo Greg
Robertson Thomas A.
South, Jr. Frank C.
Vicknair Bruce A.
Stewart & Stevenson Services, Inc.
Stinson Frankie L.
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