Extension of sucker rod pumps’ application for well-to-well formation water pumping

Key words: well-to-well water pumping, high wellhead pressure, sucker-rod pumping units, novel wellhead and downhole equipment, extension of application range.

Application of conventional sucker-rod pumping units for well-to-well formation water pumping to energize formation in waterflood pool development projects is commonly limited by high loads on sucker rods and failure to seal polished rods at high pressure. The paper discusses the extension of sucker-rod pumps’ range of application for well-to-well water pumping. The solutions provide for a downhole booster pump and a plunger-and-barrel assembly located below the polished rod to ensure a reliable sealing. The algorithm has been specified; also, the results of calculations related to the extension of application range in terms of the vertical head at 14 MPa wellhead pressure are presented.

References

1. Andreev I.I., Fadeev V.G., Fattakhov R.B., Fedotov G.A., Mezhskvazhinnaya i vnutriskvazhinnaya perekachka vody v sisteme podderzhaniya plastovogo davleniya (Crosshole and downhole pumping of water in the reservoir pressure maintenance), Moscow: Publ. of VNIIOENG, 2006, 232 p.

2. Valovskiy V.M., Valovskiy K.V., Neftepromyslovoe delo, 2009, no. 4, pp. 27-33.

3. Valovskiy V.M., Valovskiy K.V., Neftepromyslovoe delo, 2009, no. 5, pp. 40-47.

4. Utility patent 49141 RF, MPK F 04 V 47/02, Skvazhinnaya nasosnaya ustanovka (The downhole pumping unit), Inventors: Valovskiy V.M., Fadeev V.G., Valovskiy K.V., Basos G.Yu.

5. Patent 2285152 RF, MPK F 04 B 47/02, Device for sealing wellhead rod of sucker-rod pumping unit, Inventors: Valovskiy V.M., Fadeev V.G., Valovskiy K.V., Basos G.Yu.

6. Valovskiy V.M. et al., Proceedings of TatNIPIneft', 2012, V. 80, pp. 214-232.

7. Lyustritskiy V.M., Gidromekhanika pod"emnikov vyazkikh i emul'sionnykh neftey (Fluid Mechanics of viscosity and emulsion oil lifts): thesis of Doctor of Technical Sciences, Moscow, 1998.