The main characters of low permeability reservoir are of low
porosity,fine pore throat , large filtrational resistance , and fairly
low productivity and water absorbing capacity. Most of injection
wells possess high start-up prseeure which means bigger injecting
pressure , and often the rate of water injection cannot satisfy
injection allocation with bad injection result. Influenced by the
areal heterogeneity ,the operation cost of upgrading water injection
sytstem wholly is always higher and low efficiency. Through the
way of mounting booster pump on individual well , it will be
achieved to increase water injection rate ,promote the production
among these affected wells , and finally improve the sweep
efficiency and oil recovery rate.
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