长种程链式液压抽油机的研究

The study of long stroke pumping unit with hydraulic-chain drive

针对国内中后期油田高含水和稠油等特殊油藏开采需要,通过对机械驱动抽油机存在平衡机构和换向机构故障率较高等问题及液压驱动的优点分析,说明了链式液压抽油机所要解决的主要问题,双重力平衡机构,上快下慢,液压增程。并介绍了工作原理,对液压冲击、噪声等问题进行理论动态特性分析。

At the request of mid to late production in high water contain and sticky oil wells,the analysis of shortage of beam pumping unit and its phase change and the analysis of features of hydraulic drive pumping unit have been done.lt presents the main cause to be solved for long stroke,hydraulic and chain drive unit,including balance assemble,fast upward and slow downward,extending stroke by hydraulic system.The working principle,hydraulic impact,noise have also been studied in this paper.