A Study On Technological Transformation Program Of Upper ES₃5-10

Now,Pucheng Oilfield has been in high water-cut stage.Though carried out some technological transformation work to renew well network, but some contradictions in development have not been resolved,there are still many problems.There is no reservoir description and study on remaining oil distribution law, the essential geologic study result is short to carry out development adjustment.The well network is badly damaged, the waterflood development index is low.The waterflood ration dropped off from51.6%to39.6%.These bring many difficulties to improve production.Pucheng Oilfield has characteristics of high temperature,high salinity,deep reservoir. Separate-layer hydrofracturing and separate-layer waterflooding technology is not perfect.The success ratio of sealing is low.There are damages to layers during the operation.There are not enough new technologies and methods.on the basis of accurate reservoir description, remaining oil distribution law research and remaining oil potentiality assessment,through the key optimal combination study of series of strata and well network, the basis study of network restore, high pressure separate-layer waterflooding,deep profile control,separate-layer reconstruction,low permeability oil layer protection,water-flooded zone interpretation to harness Pucheng Oilfield upper ES35-10.The reservoir development level is further improved,and the matching technologies of super high water-cut reservoir development are applied to the similar reservoirs.