Abstract: In the process of polymer flooding，frequent injection and production adjustments have led to fluctuations in pay zone fluid supply and flowing pressure，and so it is necessary to adjust the pumping parameters in time acording to the working conditions of rod-pumped wells. Moreover，polymer is corrosive to rod-tubing string. The synergistic effect of corrosion and eccentric wear has led to seriously broken or disconnected of strings and shortened pump inspection period，preventive measures need to be taken. Since the start of polymer flooding in Block Qidong-1 of Xinjiang Oilfield，the downhole parameters of rod-pumped wells have been optimized by applying the self-developed calculating and analyzing computer system. A series of technologies to prevent tubing and rod corrosion and eccentric wear has been formed by independently developing anti-wear coupling，forced rotation centralizer and sucker rod connector，introducing lined tubing and providing bottom-weighted sucker rod according to wellbore trajectory. In addition，the rod-tubing string has been further improved and better protected with the development of anti-sticking，anti-leakage and anti-break oil well pump，anti-sand sticking gas separation device and new sucker rod connector. Through the application of string optimization technology，the average annual increase in oil production is 163241 t，and the average pump inspection period is extended from 235 days to 516 days，which ensures the normal and efficient production of rod-pumped wells under polymer flooding.

Key words: polymer flooding, rod-pumped well, parameter optimization, eccentric wear prevention, pump inspection period

摘要： 聚合物驱油藏注采调控频繁，导致油层供液、流压波动，需要根据抽油机井工况调整抽排参数；聚合物对抽油管柱有腐蚀作用，腐蚀与偏磨的协同作用导致杆管断脱严重、检泵周期缩短，需要采取对应措施。新疆油田七东1区开展聚合物驱以来，应用自主研发的井下工况计算分析系统，实现抽油井井下参数优化。根据井身轨迹，应用自行研制的抗磨接箍、强转式扶正器、抽油杆脱接器，引进内衬油管，配合抽油杆底部加重，形成一系列防杆管腐蚀偏磨配套技术。同时研制出防卡防漏防断抽油泵、防砂卡分气装置、新式脱接器，使抽油管柱进一步完善配套。通过应用管柱优化技术，七东1区平均年增油16 324 t，平均检泵周期由235 d延长到516 d，保障了聚合物驱抽油机井的正常高效生产。

关键词: 聚合物驱, 抽油机井, 参数优化, 防偏磨, 检泵周期