The new unit adopts hollow sucker rod working with pump and as fluid passage instead of conventional sucker rod, and uses a new hanger to fix the one-piece barrel rod pump on the casing wall, improving the operation stability of the subsurface pump.
英
美
- 針對這種情況，大港油田新世紀機械制造有限公司研制成功一種新型無(wú)油管采油裝置，這種裝置以空心抽油桿代替實(shí)心抽油桿帶泵工作并兼作出油流道，還通過(guò)一種新型懸掛器將整筒抽油泵固定在套管壁上，提高了抽油泵的工作穩定性。
