Development of Oil Well Pump With Large Displacement Deep Pumping and Load Reduction
With the development of ultra deep oil and gas fields such as Shunbei oilfield, the demand for large dis-placement deep pumping of rod pump with displacement greater than 100 m3/d and pump hanging greater than 3000 m is put forward. For this reason, a large displacement deep pumping load reducing oil well pump is devel-oped. The oil inlet valve of the pump is installed on the plunger and moves with it, and the discharge valve is in-stalled at the lower part of the pump barrel. The oil inlet valve seat is above the valve ball and relies on spring force to provide the initial closing force of the valve ball. During the up stroke, the liquid column load mainly acts on the lower oil outlet valve and is borne by the pump barrel and oil pipe, reducing the maximum load on the suspension point. During the down stroke, the liquid column load acts on the plunger to reduce the minimum load of the sus-pension point. Based on the analysis of the structure, working principle and force of the large displacement deep pump, the suspended point load calculation formula is derived, the spring structure parameters are designed, and the feasibility of the new large displacement deep pump is verified.
oil well pumpload shedding designlarge displacementdeep pumpingpumping system
万方数据
维普
