Author: Wu Fei (CNPC Liaohe Oilfield Company) Keywords: deep buried oil reservoir; low productivity; high static pressure differential; gap leakage; double pump cylinder; double fixed Vernal; pump efficiency Abstract: The deep-seated and low-productivity oil reservoirs in the old oilfield of Shuguang Oilfield are poorly buried. In response to this problem, research and design a new double-cylinder small diameter pump, the deep-pumping oil technology and experimental research, has been successful, and achieved good economic and social benefits. Also further improve the deep well supporting technology (P74 ~ 76, Table 2, Figure 3 Senate 5, Liu Zhaoshi pick). Source: "special oil and gas reservoir" 2006 the sixth period Shearing Machine,Uncoiling Leveling Shearing Machines,Stainless Steel Shearing Machine,Metal Shearing Machine WEISS MACHINERY CO., LTD. , https://www.weissmachinery.com