A prediction model for a new deep-rod pumping system

作者：Luan Guo-hua^*; He Shun-li; Yang Zhi; Zhao Hai-yang; Hu Jing-hong; Xie Quan; Shen Ying-hao

来源：Journal of Petroleum Science and Engineering, 2011, 80(1): 75-80.

DOI：10.1016/j.petrol.2011.10.011

• Side-flow pump
• Sucker rod pumping
• Mathematical model
• Deep rod string

The side-flow pump is presented for increasing the setting depth of sucker rod pumping system, which adopts a special structure of side-flow valve, ladder-type solid plunger and breathing hole. By transferring the load of liquid column to the tubing on the upstroke, the new pump achieves a smaller polished rod load. On the basis of in-depth study of the pump, this paper provides a brief formula of the static polished rod load. Assuming the tubing is anchored, a new one-dimensional vibration model of sucker rod pumping system is built, which takes into account the structure of the side-flow pump. Then a mathematical model is used to design the sucker rod pumping system of Well TKN-1. with a setting depth of 4716 m. The results of dynamometer analysis show that mathematical model of side-flow pumping system and its computer programs can successfully model deep rod string performance. The rod pumping system of Well TKN-1 has operated trouble-free for 8 months. The knowledge gained gives confidence for additional future applications.

• 出版日期2011-12
• 单位中国石油大学（北京）; 西南石油大学