Preparation and Optimization of Modified Asphalt by Profile Control Parameters at Lamadian Oilfield

The Lamadian oilfield has entered the stage of strong water cut after natural energy development and conventional flooding development. use asphalt binder for profile control can not only adjust contradiction between layers, expand swept volume, but also improve oil displacement efficiency. field test achieved certain results. main layer in a thickness serious vertical plane heterogeneity. After years injection polymer development, most oilfields have period cut. In test, it is found that effect different well layers very different, unstable, reason unclear. Therefore, necessary to carry out research on adaptability parameter optimization through laboratory experiments. this paper, provided site are modified dispersion studied, concentration suspending agent optimized. artificial cemented core structure method improved solve problem aggregated end face during injection. experiment was carried with cores, matching relationship injected particle size permeability determined, optimal amount optimized cores permeabilities. results show adding KCl (potassium chloride solution) solution 2% as dispersant exert better dispersing binder. Through plugging rate experiments three types binder, determined best when 0.06–0.1 mm. According experimental results, radius system out. Finally, 3500 mg/L 1/3–1/2 spacing were parameters. application provides basis.