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 70GSM Fast Dry Sublimation Paper 70Gsm Fast Dry Sublimation Paper,Heat Transfer Paper,Sublimation Paper Roll Transfer Printing,Sublimation Transfer Paper Suzhou Hummberg Paper CO.,LTD , https://www.humpaper.com