Research Article
Prediction and Analysis of Polished Rod Dynamometer Card in Sucker Rod Pumping System with Wear
Table 3
Equipment parameters of sucker rod.
| | Sucker rod diameter | Length | Cross-sectional area | Deadweight | Elastic constant |
| | ϕ19 mm | 710 m | 2.84 × 10−4 m2 | 2.35 × 10−2 kN/m | 1.664 × 10−5 (kN)−1 | | ϕ22 mm | 890 m | 3.80 × 10−4 m2 | 3.14 × 10−2 kN/m | 1.241 × 10−5 (kN)−1 | | ϕ25 mm | 174 m | 4.91 × 10−4 m2 | 4.09 × 10−2 kN/m | 0.961 × 10−5 (kN)−1 |
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