Open AccessDesign and Efficiency Analysis of Small Displacement Pump
Author(s) -
Tiancai Cheng,
Minghu Jiang
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/461/1/012052
Subject(s) - variable displacement pump , oil pump , plunger , progressive cavity pump , reciprocating pump , plunger pump , volumetric efficiency , radial piston pump , axial flow pump , petroleum engineering , axial piston pump , separator (oil production) , centrifugal pump , rotodynamic pump , hydraulic pump , screw pump , mechanics , materials science , mechanical engineering , engineering , impeller , thermodynamics , physics
To address the common issues of low-production oil wells like unbalanced supply and output, low pump efficiency and system efficiency and high energy consumption, a small-displacement oil pump has been developed. The pump has an enhanced structural strength with solid plunger and the mobility of the pumping oil with offset outlet valve. The outlet valve is located at the highest point of pump chamber when the plunger is at the bottom dead center, which is preferable for the discharge of gas and high gas-liquid and pump efficiency improvement. Combined with the distribution law of oil and gas in vertical pipe flow, it is assumed that the dissolved gas is linearly distributed from the oil inlet valve to the bottom end of the plunger after the pump is introduced. According to the position of the oil pumping valve of the oil pump, the efficiency calculation formula is derived. Then through reasonable matching of working conditions, the influence of various factors on pump efficiency is analyzed. The pump’s pump efficiency is about 10% higher than the API minimum pump diameter (32 mm), which is important for energy saving in oil fields.