For production of oil with high GOR ELKAM provides the following solutions: 1) specialized two-stage sucker rod pump with additional top valve which allows to shut off hydrostatic fluid column from discharge valve, thus creating low-pressure chamber above the travelling valve; 2) tubing sucker rod pump of THM-G (NNSHG) type plunger of which is made as valve plunger with plate-type seal of hard alloy travelling valve; 3) sucker rod pump with gas discharge tip which is used for the purpose of positive opening travelling valve; 4) gas separator designed for efficient high-capacity formation fluid gas separation.