Abstract:
Oil sludge is a kind of residual sludge,which is genera-ted during water treatment of oilfield production and contains a certain amount of crude oil and minerals,having the char-acteristics of easy dispersion and good suspension. With the quality of granularity,the minerals could be injected into for-mation and play the role of sealing. Combined with the for-mation characteristics and fluid properties of Wen,Wei and Ma oil reservoirs of the Third Oil Production Plant of Zhongyuan oilfiled,based on traditional profile control tech-nique,adding a proportional modifier into dry clay after filter-pressing,a new profile agent-the oily sludge base profile modificator,suitable for Zhongyuan oilfield development,has been studied and optimized. During the past two years,the new profile agent has been put into oilfield practice for 40 wells and the cumulative increased oil production is 8238 t.