Wells – Processes – Cementing – plugging or consolidating
Patent
1991-06-14
1992-04-14
Novosad, Stephen J.
Wells
Processes
Cementing, plugging or consolidating
366 17, 366137, E21B 3314
Patent
active
051039087
ABSTRACT:
A mixing apparatus comprises two or more tubs in which mixtures can be mixed to obtain averaging of a particular property, such as density. Two recirculation lines are used. One recirculates between an initial mixing tub and a mixing inlet, and the other recirculates from the additional, secondary averaging tub(s) and the mixing inlet. Computer control responds to densities of fluids recirculated through both of the recirculation lines. In a preferred embodiment, the computer is also responsive to pressure of one of the inlet substances. In response to these measured inputs and other data entered through a data entry terminal, the computer generates control signals for controlling the inputs of both of two inlet substances. In a preferred embodiment, the apparatus and a corresponding method utilize displacement tanks both as averaging tubs and as conventional displacement tanks.
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Duzan James R.
Gilbert III E. Harrison
Halliburton Company
Novosad Stephen J.
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