Re-Engineering of an Impeller for Submersible Electric Pump to Be Produced by Selective Laser Melting

The subject of the present study is the reproduction of a submersible electric pump impeller through reverse engineering and additive manufacturing. All of the phases commonly envisaged in the reproduction of an existing piece were carried out. The aim of the study is to show how the chosen pump component can be effectively re-engineered and produced with the selective laser melting technique, obtaining a final product that is comparable if not even better than the starting one. To achieve this goal, the original piece was redesigned and a new model was created and analyzed. The whole process has been split into three main phases: (i) realization of the three-dimensional model from an existing piece using reverse engineering techniques; (ii) finite element analysis for the optimization of the use of the material; and (iii) 3D printing of a concept model in polyethylene terephthalate by using the fused deposition modeling technology and of the functional model in AISI 316 stainless steel with selective laser melting technology.

The software module for evaluation of the failure probability of the well electric submersible pump installation

Submersible electric pump installations (ESP) are the main tool of oil production due to the high rate of the oil deposits development. Improving of the production efficiency using ESP is an urgent problem for the oil industry. Failures of installations are caused by many factors, some of them are salts. Water contained in the oil is oversaturated by sparingly soluble salts. It can precipitate in the form of scale at heating. It leads to the gradual decrease of the pump pipe diameter and consequently decreasing of production. In this case, the pump operation mode may be failed. Timely shutdown of the pump for well repair before failure can significantly reduce costs, as well as prevent critical damage of all equipment. But such type of failure as the salt deposition is difficult to perceive, and subsequent repair involve aggressive acid flushing. Reverse situation is connected with maximization of the turnaround maintenance. Therefore, for operators of production control centers it is important to have an information of the failure probability for certain parameters at a given time points. At present, datasets on the technical operating modes for equipment are saved by special software of the digital support platform. Nevertheless calculations of the probabilistic characteristics are not presented. Based on Bayesian estimates, we propose to obtain evaluation of the failure probability in order to support of the evidence monitoring of the wells operation and generate a control impact in case of the critical probability of failures.

Numerical Simulation of Particle Impact Erosion within Electric Submersible Pump Based on Fluent

In the same well water flooding process, solid particles contained in the fluid often result in the impeller submersible electric pump to erosion wear. We use Fluent software to establish the model of flow field,and use numerical simulation method to analyze the erosion wear. We use the erosion theory to calculate the erosion wear rate,and verify the correctness by the contrast between the results of numerical simulation and actual value.

The Stress Analysis of Joint Connecting Bolt of Submersible Electric Pump

Submersible electric pump units are connected by bolts. This paper uses finite element analysis method to simulate how the pump joint bolt behave when it transmit torque.In this paper, temperature method is adopted to simulate the bolt preload and axial deformation.It also used to analyse and calculate the limited value when submersible electric pump units transmit torque under different preload. All of this provide the designing of connecting bolt preload and construction with theoretical basis.

Embedded Multi-Parameter Monitoring System for Submersible Electric Pump

The multi-parameter measurement of submersible electric pump is an important part of monitoring data underground. The system measures the temperature, pressure, leakage current and vibration signals, which return through the power line carrier technology and data processing on the oil well. This article also focuses on the pressure sensor temperature compensation algorithm, using an anti-linear curve fitting to approximating, and effectively eliminates the error of silicon pressure sensor resulting from temperature changing. The system has brought about a striking effect in experiments of oil field.