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The Acidizing blocking oil fields to improve the development effect , has been widely used in oilfield development . In this paper, the Dagang Oilfield Wangguantun the porosity , permeability reservoir , the viscosity of crude oil , asphalt , gum and wax content is high , drilling and completions and production operations in the range of reservoir damage , plugging type complex characteristics of lower capacity put into operation , to carry out such reservoirs and damage mechanism and type , yield increasing mechanism , preferably acid systems , acidification , optimize design simulation , reservoir characteristics and geological and sensitivity test research , proved the existence of a variety of potential damage factors objectivity to study the damage mechanism , scope , type and extent ; developed a deep penetrating weak dissolution , not broken ring rock skeleton SJA-2 acid systems , and long core acidification flow test method evaluation ; through experimental research and acidification numerical simulation model improvement and perfection , to establish a mathematical model of sandstone acidizing can be used in sandstone acidification design , acidification process simulation capacity forecasts , construction parameters preferred ; through acidification study research , the formation of blocking technology to solve a series of acid of different reservoir and different type of injury to resolve . Final practical sandstone reservoir acidification countermeasures and supporting acidification technology .
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