关键词:  , 塔里木油田；长柱塞防砂泵；双泵筒；长柱塞短泵筒；防砂卡；稠油

Abstract: Sand production caused by open-hole collapse and high flow resistance of heavy oil in wellbore are all the actual production problems in carbonate reservoir of Tarim oilfield. Thus, the blockage of sucker rod pumps caused by sand grains and the dropout of plunger valve housing often occurs in production wells, resulting in economic losses. To solve these problems, a new oil production technology of long plunger sand control pump combining double pump barrel with short pump barrel of long plunger was proposed by laboratory study and field trials. This technology was improved based on the prophase rod pumping technology for deep and ultra-deep wells to make it possible that the plunger valve housing always runs outside the pump barrel so that the frequency including the blockage of sucker rod pumps caused by sand grains and the dropout of plunger valve housing was reduced. The new technology had been applied in eleven wells and prevented thirteen wells from suffering the blockage of sucker rod pumps caused by sand grains and the dropout of plunger valve housing, which improved the productivity of oil wells and increased the annual oil production 13051 t.