The Experimental Research On The Dynamic Imbibition For Tight Reservoir

Tight oil resources are abundant in the world.Its economic value is enormous.The propotion of tight oil reservoirs in China has gradually increased and how to develop tight oil reservoirs efficient is an essential task in the oil field.Dynamic imbibition which is one of the primary technology to develop tight oil reservoirs is receiving increasing attention.Xinjiang tight sandstones are selected as the research object to carry out dynamic imbibition experiments.Under the laboratory conditions,the experimental device which is to reduce experimental error is self designed on the basis of summarizing the previous experimental equipments.The physical simulation experiment of dynamic imbibition is carried out by simulating the reservoir temperature,pressure,length and crack.Through a series of experiments,studies the influence of fracture density,matrix permeability and surfactant on the experiment rules of dynamic imbibition.Based on the imbibition of capillary force,the experinment of dynamic imbibition which is for analysis of various factors affecting oil and water exchange capacity is carried out.The experiment obtains the result from theory and experimental phenomenon.This study also aims to research the various factors of affecting on dynamic imbibition and get more characterisitic of imbibition in tight resources.In order to improve the result of dynamic imbibition in oil field,various methods and technique have been established and thus they can provide more theory gist for improve the effect on tight resources.