Development and application of ultra deep and anti-heavy-oil electric pump

In the Tahe Oil Field,surface viscosity of crude oilsis over 100×10⁴mPa?s andreservoirsareburied over 5700m deep.When drilling deeper,formation energy decreases and normal deep-pumping techniques fail to meetwellbore temperature fieldsexploration needs.Based nnanalyses of crude oil physical properties andin the Tahe Oil Field。StYnCtnYeand performance parameters of electricpump wereimproved.Heat resistance,insulation and sealing capacities of motorwere enhanced.Compressive strength of submersiblepump was strengthened.Lift of single-stage impellers and diffusersincreased.Combined with high temperature cable andsine filter technologies,ananti-heavy-oil electric pump wasdeveloped and successfully applied in Well TH10113CHultra-deep andof the Tahe OilField,resulting in the deepest drilling depth in the world,5029.8 m.