Research on Hydraulic Self-Enhancement Technology of Fracturing Pump’s Valve Box

Abstract

It is very important to process acid and fracturing treatment in oil field to improve permeability. The fracturing pump is one of the key equipment for Acid and fracturing treatment. The valve box of fracturing pump is fundamental, costly and wearing parts. Based on the data from domestic and abroad, the life of the valve box is short. Fatigue cracks caused by alternating stress and erosion account for the most invalidation of the valve box. Only increasing structural size and improving material property are not efficient to prolong service life. Related studies show that hydraulic self-enhancement technology is an effective method and it is used widely to improve service life of fracturing pump’s hydraulic parts. Here hydraulic self-enhancement process was simulated by finite element method and 600 Horse Power fracturing pump was studied. The optimal self-enhancement pressure and loading-unloading treatment method are suggested. This study offers a method to found valve box's production technics by hydraulic self-enhancement technology.

Finite element analysis and structural design of fracturing pump valve chamber under multiple working conditions

“…Yao ZM, et al [4] adopted ANSYS Workbench to analyze and calculate the stress and deformation distribution characteristics of four different CDJY-2500 five-cylinder fracturing pump heads, The research results can provide a theoretical reference for the optimal structural design of the fracturing pump valve chamber. Jiang F G, et al [5] found that The hydraulic autofrettage process is simulated by using the FEA method. The 600 HP fracturing pump is studied to find the stress distribution of the valve chamber, through which the optimal autofrettage pressure and unloading treatment method are proposed.…”