RESEARCH ON EROSION AND WEAR LAW OF STABILIZER BLADE BASED ON CFD-DPM MODEL

In order to study the erosion and wear laws of solid particles on three different structures of centralizers, erosion and wear simulations were conducted on the three structures of centralizers by changing particle diameter, fluid velocity, and particle mass flow rate parameters by using computational fluid dynamics theory and Analysis Fluent DPM model.The results indicate that the erosion rates of the three types of stabilizers increase with the increase of particle size, flow rate, and mass flow rate.The location of erosion on the spiral blade stabilizer is mainly on the inner side of its blade, while the locations of erosion on the concentric and eccentric blade stabilizers are mainly at the connection between the drilling tool and the stabilizer.Scattered spot shaped erosion areas will also be generated at the top of the blade and the flow channel between the blades.Under the same conditions of particle size, flow rate, and mass flow rate, the erosion rate of the spiral blade stabilizer is greater than that of the other two stabilizers.When the particle diameter is large or the flow rate is high, using an eccentric straight edge stabilizer is safer.When the particle concentration in the fluid is high, using a concentric straight edge stabilizer is safer.