| It is valuable both in technology and economy to using polymer flooding in off-shore oil field enhancing oil recovery, because of the restriction of off-shore platform limited space and lack of freshwater, powder polymer and its injection technology have received the big limit to be used in off-shore reservoirs, emulsion polymer has the character of high dissolution rate and small injection allocation equipment, its flooding technology is suitable to publication and application in off-shore reservoir enhancing oil recovery. The emulsion polymer injection allocation technology in off-shore oil field was studied in the aspect of emulsion polymer flooding system hydrodynamic and on-line injection allocation technology, and an injection allocation technology that is suitable to off-shore platform flooding was designed.The rheology of emulsion polymer flooding system in different temperature,salinity and density was studied by in-house experiment, the emulsion polymer flooding system rheological equation was fitted by Least squares method, the result shows that emulsion polymer and emulsion polymer solution rheology are both conforming to power law style. According to Non-Newtonian fluid mechanics, polymer solution pile flowing mathematical model was built, the rule of polymer solution pile flowing energy loss and pile flow frictional coefficient was gotten by energy loss experiment, it provide rational to polymer flooding allocation technology design.Based on orifice shearing demulsification mathematical model, the emulsion polymer on-line demulsification unit that is satisfied oil field different injestion rate was designed, the emulsion breaker selection criteria in different injection rate was establishment by in-house experiment, the experiment result shows that the developed emulsion breaker is easy to replace, demulsification effect good and avoid polymer excessive shearing.According to laboratory emulsion polymer solution preparation principle, emulsion polymer and seawater mixing unit was designed, the structure of mixing unit was optimized by Fluent software, in-house experience shows that the emulsion polymer solution that flow through mixing unit was uniform and had high viscosity, the mixing unit avoided the floccules caused by mixing inhomogeneous.Based on the reseach of polymer emulsion, polymer solution rheological property and non-newtonian fluid pipe flowing friction, polymer injection pipe diameter was seleced to get the least fracture drop and easiest to inject. The calculated result shows that the polymer injection pipe diameter cannot less than 40mm and the emulsion polyer translation pipe diameter is 19mm..Based on demulsification unit, mixing unit and static mixing decive core components, an emulsion polymer flooding allocation process that is suitable to satellite platform in Sheng Li oil field was designed, the in-house emulsion polymer solution preparation experiment was carried out. The experiment result shows that the polymer solution viscosity prepared through on-line equipment is 80% of preparation by agitator and achieved.oil field polymer injection viscosity requirement.this injection allocation process has simple structure and small occupation area, is suitable to off-shore oil field platform polymer on-line injection.
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