A Calculation Method and Device for Pump Power Diagram Based on Fluctuation Analysis of Suspension Point Load of Pumping Unit
A technology of suspended point load and calculation method, which is used in design optimization/simulation, construction, special data processing applications, etc., can solve the problem that the parameters such as the length and diameter of the sucker rod are not available, the parameters of the sucker rod should not be obtained accurately, and the pump will be affected. Problems such as power diagram calculation and application to achieve the effect of easy acquisition and easy calculation
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Embodiment 1
[0040] figure 1 For a flow schematic of a method of calculating a pump function based on a pumping machine suspension load fluctuation analysis, such as figure 1 As shown, the method includes:
[0041] Step 1: Get the longitudinal fluctuation equation of the extract rod;
[0042] Further, depending on the speed of the sound in the rod of the rod, the damping coefficient of the oil well liquid on the oil lever is ν, and is an underwent state, the upper boundary condition displacement time function is p (t), the lower boundary condition load The time function is q (t), the initial time shift and speed are zero, the length of the rod is L, the longitudinal fluctuation equation of the extract rod is:
[0043]
[0044] Step 2: Calculate the fluctuation equation and obtain the analysis of the fluctuation equation;
[0045] Further, the fluctuation equation is calculated, and the analytical solution of the fluctuation equation, further comprising: pre-desplence solution of the fluctua...
Embodiment 2
[0165] figure 2 A structural diagram of a pump function calculating device based on an oil suspension load fluctuation analysis in the present invention, such as figure 2 As shown, the apparatus comprises:
[0166] The measuring module 21 is used to measure the suspension displacement and a hosted load time sequence;
[0167] After acquiring module 22, the acquisition module 22 is configured to acquire a suspension displacement and a hosted load time sequence of one cycle, the acquisition module 22 and the measurement module 21;
[0168] Analysis Module 23, the analysis module 23 is used to analyze the hosted load fluctuation characteristics, the analysis module 23 and the acquisition module 22;
[0169] The calculation module 24 is configured to calculate the pump function, the calculation module 24 to the analysis module 23;
[0170] Output module 25, the output module 25 is configured to output the calculation result, the output module 25 connected to the computing module 24. ...
Embodiment 3
[0173] Next, a method of calculating a pump function calculation method based on an oil suspension load fluctuation analysis of a pumping machine is detailed, as follows:
[0174] When vibration analysis is performed on the suspension load, image 3 As shown, the measured suspension displacement and load time sequence of a well in the victory oil field is an example, the rod material is carbon steel, the density is 7890kg / m. 3 The Young's modulus is 206GPa, and the specific implementation steps are as follows:
[0175] Step 31: Select a cycle of suspension displacement, load time sequence, such as Figure 4 and Figure 5 Indicated. Select fluctuation load signal: look for maximum load point PRL during the up-shift process (T pm (Or the minimum load point in the downstorm, the above rush as an example), determine the time t at this time Sm , Select the maximum load point to the original fluctuation signal PRL at the top dead point (T pm : T Sm ), At the starting point at the maximum...
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