Study on the Combination of Pump Rod Pipe in Complex Structure

Table 2

Main parameter.

	Parameter name	Value
1	Grading of oil pumping rod	3
2	Grade 1 pumping rod diameter (mm)	25
3	Grade 2 pumping rod diameter (mm)	22
4	Grade 3 pumping rod diameter (mm)	19
5	Grade 4 oil extraction rod diameter (mm)	10
6	Level 1 grade length (m)	549.8
7	Level 2 grade length (m)	572.81
8	Level 3 grade length (m)	863.24
9	Pump self-respect (kg)	50
10	Pump diameter (mm)	44
11	Pump gap (mm)	0.1
12	Number of swimming valves	2
13	Level 4 grade length (m)	450
14	Density of oil pumping rod (g/cm3)	7.85
15	Crude oil density (kg/m^3)	0.878
16	Axial friction coefficient	0.1
17	Oil pipe inner diameter (mm)	50.8
18	Wellhead back pressure (Pa)	0.6
19	Allow the stress of the suction rod (MPa)	867
20	Swimming valve plunger area (mm^2)	50
21	Valve hole cross-section (mm^2)	50
22	Crude oil sports viscosity (mm^2/s)	20
23	Valve hole flow coefficient	0.8