Abstract: Because 6D type flooding pump was low in efficiency, high in consumption of electricity, and short in life, it could not meet the demands of oil-field flooding water. The 6D type flooding pump having been renovated technically, its efficiency has been improved, its life has been prolonged, its function has been bettered, and a lot of energy has been saved. In this paper, the renovating method and experiences are introduced in detail.

Key words: flooding pump, pump renovation, economical benefit