The Research Of Different Drilling Types On Fu-Yang Formation In Bumuge Field

The existence of low permeability, bad reservoir property, strong inhomogercity, small pore throat by specific surface and the high capillary forces leads to the great difficulties in developing a low permeable field. The geological property of the formation and the characteristic of the reservoir must be known precisely before exploit, so that the corresponding stimulation method could be applied to the field, and thus to enhance the recovery of the reservoir, concerned the condition above and combined with the geological properties of the Bumuge field, and by the means of experiments, the pseudo-starting pressure, the relative permeability of water and oil, the relative permeability of oil and gas was measured, and the influence of gas type (natural gas, CO2, N2) and the slug ratio of oil and gas on the recovery of Bumuge field under alternation injecting of water and gas was studied.The great effect of gas drove (especially CO2) on the enhance reqovery was concluded. And all these researches have a grand guiding influence on the enhancement of the development result in Bumuge field.