| CPC C09K 8/36 (2013.01) [B01F 23/4105 (2022.01); B01F 25/51 (2022.01); B01F 35/2136 (2022.01); B01F 35/2209 (2022.01); C09K 23/00 (2022.01); E21B 21/062 (2013.01); B01F 2101/49 (2022.01)] | 15 Claims |
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1. A system comprising:
a drill for boring through earth, rock, and other materials to form a wellbore;
a casing for supporting sides of the wellbore;
a tank to hold drilling fluid, the tank fluidly coupled to the wellbore;
outlet conduits located at least partly within the tank, the outlet conduits having a tree structure comprised of a trunk and branches, each of the branches having one or more nozzles for outputting drilling fluid within the tank;
one or more inlet conduits for receiving drilling fluid from the tank;
one or more pumps that are controllable to suction the drilling fluid from the tank through the one or more inlet conduits and to force the drilling fluid into the tank through the outlet conduits; and
a control system comprising a viscometer and an electrical stability tester to obtain a rheology of the drilling fluid, and a processor to continue operation of the one or more pumps until a target rheology is achieved,
where the rheology comprises measurements obtained from the viscometer at different rates of rotation; and
where the rheology comprises measurements for a viscosity of the drilling fluid, a yield point of the drilling fluid, a gel strength of the drilling fluid, and an electrical stability of the drilling fluid,
wherein the processor is configured to control the one or more pumps such that if initial pump operation rate of the one or more pumps does not produce the target rheology, then pump operation rate of the one or more pumps is increased gradually or in discrete increments until the target rheology is met;
wherein the processor is configured to control the one or more pumps such that when the rheology of the drilling fluid comes with range of the target rheology, the operation of the one or more pumps is controlled to discontinue.
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