Solar energy paper index
A Study on Flow-Rate Stabilisation Control for a Dual-Pump Drilling Fluid Property Measurement System
One-line summary
A solar energy research paper on A Study on Flow-Rate Stabilisation Control for a Dual-Pump Drilling Fluid Property Measurement System.
Engineering notes
Engineering notes will be added by the Power for Solar editorial team.
Chinese explanation / 中文解读
中文解读待补充：本站会优先为光伏效率、钙钛矿太阳能电池、储能技术、太阳能热利用、BIPV、并网技术等高价值论文补充中文说明。
Original abstract
Abstract Drilling fluid rheology is important for wellbore cleaning, drilling efficiency and operational 
safety. In online pipe-viscometer measurements, pump pulsation and the non-Newtonian, time-varying 
behaviour of drilling fluids can cause actual flow deviations and fluctuations, thereby disturbing pressure
flow data and reducing the reliability of subsequent rheological parameter estimation. To address this issue, 
a dual-pump flow-stabilised measurement system was developed for drilling fluid testing under multiple 
operating conditions. The system integrates two diaphragm pumps, a pressure tank, a pipe measurement 
section, an ultrasonic flowmeter and pressure sensors to provide stable flow conditions over low-, medium- 
and high-shear-rate ranges. An improved Grey Wolf-optimised fuzzy PID controller was introduced to 
optimise the scaling factors of the fuzzy controller and enhance adaptability and robustness. Comparative 
experiments were conducted under small-pump, large-pump and dual-pump operating modes. The proposed 
controller achieved the best overall performance among the three control strategies tested. Under the small
pump condition, the RMSE and ITAE were reduced to 0.0104 and 0.0187, respectively; under the large-pump 
condition, they were reduced to 0.0187 and 0.0125; and under the dual-pump condition, the settling time was 
shortened to 0.5 s, with an ITAE of 0.0047. These results indicate that the proposed method improves flow 
response and flow stability, reduces the influence of flow deviations and fluctuations on pressure–flow data, 
and provides more reliable measurement conditions for subsequent rheological evaluation of drilling fluids.
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