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CYJX12-3．6-53HB型抽油机为国内最大型号的斜直井抽油机。该机采用后置式游梁连杆长度有级调整、0°～25°和25°～45°二级分段以及复合偏置原理的曲柄平衡机构。通过对四连杆几何尺寸的优化，整机具有异相型抽油机的节能特点，表现为良好的运动和动力性能。实践证明．新研制的斜直井抽油机满足了大庆油田科直井机械采油的需要，填补了国内大型斜直井抽油机的空白。
CYJX12-3.6-53HB pumping unit is the largest type of vertical well pumping unit in China. The machine uses rear beam rod length adjustment, 0 ° ~ 25 ° and 25 ° ~ 45 ° second-stage and composite bias principle crank balance mechanism. Through the optimization of the four-link geometry, the machine has the energy-saving features of the heterogeneous pumping unit, showing good sports and dynamic performance. Practice proved. The newly developed inclined well pumping unit to meet the Daqing Oilfield Branch shaft mechanical oil needs, to fill the gap of large domestic wellhead pumping unit.