Design of Automatic Drilling Fluid Configuration System Based on PLC

Abstract

With the rapid advancements in the drilling industry, drilling fluid serves as a crucial circulating medium, significantly influencing both efficiency and safety through precise dispensing. This paper introduces an automatic configuration system for drilling fluids based on a Programmable Logic Controller (PLC), addressing health risks, dosage instability, and high costs associated with traditional manual preparation methods. The system employs a modular design comprising components such as human-machine interaction, powder and liquid material addition, mixing and stirring, storage of drilling fluids, heating, and cleaning. By integrating a C#-developed human-machine interface with PLC control circuits, full process automation is achieved—including formula importation, system reset functions, raw material addition procedures, transfer to storage of drilling fluids and cleaning operations. Experimental results demonstrate that the system maintains an average error below 0.1g in powder feeding experiments—indicating high precision and consistency in formulating drilling fluids. This study not only enhances automation in preparing drilling fluids but also significantly supports technological advancement within the industry.