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泵筒带螺旋槽的防砂卡抽油泵是在普通整筒泵的内壁加工几段正反交叉的盲螺旋槽 ,采用等径光杆柱塞 ,其上加装一旋转器。旋转器通过抽油杆柱下放压力和上提拉力强迫旋转杆顺时针旋转 ,从而带动柱塞旋转。柱塞在运动中既做往复直线运动 ,同时还做圆周运动 ,故磨损均匀 ,使用寿命延长。采用带螺旋防砂槽的泵筒 ,可使砂粒在柱塞旋转时被挤入防砂槽内 ,而在下一个冲程时又被液流冲出 ,从而防止了砂卡。这种防砂卡泵在大庆油田 92口油井中使用 ,比普通抽油泵平均泵效提高约 3% ,平均检泵周期延长 5 2 5 8d
Anti-sanding card pump with helical groove pump pump is in the ordinary cylinder pump processing of several positive and negative cross-blind spiral groove, the use of equal-polished rod plunger, the installation of a rotator. The rotator drives the rotating rod to rotate clockwise by lowering the pressure and lifting force of the sucker rod to drive the plunger to rotate. Plunger in the exercise of both reciprocating linear motion, but also to do circular motion, so wear uniform, extended service life. The use of a barrel with a spiral sand trap allows the sand to be squeezed into the sand trap while the plunger is rotating and out of the flow during the next stroke, preventing the sand trap. This sand control card pump used in 92 oil wells in Daqing Oilfield, compared with the average pumping efficiency of ordinary pump increased by about 3%, the average pump cycle extended 5285d