| 摘要 |
<p>This invention relates to a mechanical oil recovery method and system with a sucker rod pump. Through the method the technological parameters are directly calculated based on the lowest power loss or the lowest cost principle. The method comprises sequentially arranging internal diameter, steel grade of rod, pump diameter, pumping depth and stroke amplitude, searching the combinations of rods to calculate pump efficiency and the number of strokes, on the basis of Pru=Pyou-Ppeng + Psun, and calculating, corresponding to the input power Pru, active power Pyou, expansion power Ppeng, ground power loss Pd, slide power loss Ph and viscose power loss Pv and the sum of losses Psun. The mechanical oil-recovering cost is then calculated for each combination, and each mechanical oil-recovering parameter is chosen. The invention still discloses a mechanical oil recovery system with a sucker rod pump.</p> |
