Abstract In oilfield, scaling caused by water injection is becoming increasingly serious blocking the gathering and transmission pipelines of oilfield resulting in a decline production great loss production. Oil gas leakage pipeline scaling, corrosion perforation has irreversible damage to surrounding environment. this paper, citric acid sodium pyrophosphate are used as main agents, hydrolytic ...

The relative permeability curve is an important basic data for the preparation and dynamic analysis of oilfield development ( adjustment ) schemes. Due to different types curves in water cut stages, there a large deviation prediction indexes ultra-high stage according early development. In order study change process, based on morphological characteristics 118 28 coring wells Xingbei area after ...