侧流式减载深抽泵抽油系统悬点载荷计算

Calculation of polished rod load of lateral-flow load reducing and deep pumping system

张继红 刘珂君 张楠 刘明君 张刚

ZHANG Jihong LIU Kejun ZHANG Nan LIU Mingjun ZHANG Gang

大庆石油学院提高油气采收率教育部重点实验室，黑龙江大庆　163318 大庆油田公司第九采油厂，黑龙江大庆　163318 大庆油田海拉尔石油勘探开发指挥部贝301作业区，黑龙江大庆　163318

MOE Key Laboratory of Enhanced Oil and Gas Recovery of Education, Daqing Petroleum Institute, Daqing 163318, China No.9 Oil Recovery Plant of Daqing Oilfield Company Limited, Daqing 163318, China Bei 301 Operation Zone, Hailaer Directorate of Petroleum Exploration and Development, Daqing 163318, China

为论证引进的侧流式减载深抽泵的减载能力和深抽可行性，在分析侧流式减载深抽泵的工作?理及受力状况的基础上，建立了侧流式减载深抽泵在油井深抽条件下的悬点载荷计算模型，通过与普通管式泵的载荷计算模型对比发现侧流式减载深抽泵在上、下冲程中均能起到减载作用。通过深抽井X839的实例计算验证了侧流式减载深抽泵的减载作用，计算表明侧流式减载深抽泵比普通管式泵减小最大、最小载荷1 t左右。为侧流式减载深抽泵在油田深抽井的推广应用提供了技术参考。

To demonstrate the load reducing ability and feasibility of deep pumping of the lateral-flow deep pump, on the basis of analyzing the working principle and stress state of this kind of pump, a polished load calculating model is established for deep pumping of oil wells. By comparing it with that of the commonly-used tube pump, it is found that the new deep pump could reduce the load when running up and down. Through the calculation of the X839 well, the load reduction effect of the new deep pump is proved. The calculation shows that the new deep pump could reduce the maximum and minimum loads by one ton or so as compared to the commonly-used one. This could be valuable reference to the wide application of later-flow pumps to deep pumping wells in oilfields.