Abstract: Traditionally, artificial pitching was used for paraffin removal of oil wells. However, it is complicated. The automatic pitching device based on alternating motion of double piston was designed by electromechanical integration technologies. The device could remove paraffin by pitching automatically and regularly. The device has advantages such as high integration, compact conformation, pressure relief without venting and heat tracing in winter. Moreover, it solves the bottleneck of oil leakage in ball storage tank and fills up domestic blank of automatic pitching. It is shown that the device has a stable performance and is able to meet the demands of digital management with unattended oil production status when put into operation with 100% of pitching accuracy rate and 99% of defect-free rate. Its wide applications reduced operation cost and improved production efficiency. Now, it has become one of he key technologies of digital management in Changqing Oilfield.

Key words: automatic pitching, paraffin removal, oil pipeline, digitalization

摘要： 针对油井人工投球清蜡操作繁琐等问题,根据双活塞交替动作原理,研发了该自动投球装置,实现了自动定时投球清蜡作业。该装置集成度高,结构紧凑,无需放空泄压、冬季伴热,解决了储球筒进油的技术瓶颈问题,填补了国内自动投球技术空白,达到国内领先水平。经现场应用,投球动作准确率达100%,平均无故障运行率达99%以上,性能稳定可靠,可满足油田生产前端无人值守的数字化管理要求。该装置的规模化推广应用降低了运行成本,提高了生产效率,已成为长庆油田生产前端数字化管理的关键技术之一。

关键词: 自动投球, 清蜡作业, 油田输油管线, 数字化