Research On Distribution Pattern And Method Prediction Of Fluvial Facies Reservoir Layer Intrinsically Residual Oil

At high water-cut stage ,primary mission of oil-field development and regulatory is"acquainted with residual oil and exploitation residual oil". Water flooding development ofDaqing oilfield has gone through for forty multi-year,in the subsurface ,distribution of oil andwater are complication ,whose exploitation are difficult. Research shows that, at presentresidual oil reserves of Daqing oilfield mostly focuses on thick oil layer media,andhenceforth it becomes the subject of residual oil DUG dive .Therefore, it was importanceproblem of Daqing oilfield high water-cut deuteric that thick oil layer residual oil distributionresearch. In consideration of this,fluvial facies reservoir is principal reservoirs for oil and gasstyle and residual oil DUG dive region of continental basins .The main type of the fluvialfacies reservoir residual oil includes watering disperse phase residual oil,either lowpermeability feebleness watering residual oil layer at channel sand top, overbank or borderfacies thin layer hypotonic residual oil,residual oil layer of pollution by engineering, bestcompartment microtrap residual oil, sever edge region residual oil of developed fault blockextension ,it amounts to six strain main .The formation factor, construct factor, physicalproperty factor of crude oil , developmental project factor as well as reservoir managementlevel have a great influence on residual oil form. It is regularities of distribution of fluvialfacies reservoir residual oil at portrait, plane and spatial that helps us to know clearly fluvialfacies reservoir residual oil DUG dive and keep measure and basic policy ,as well it isimportant for both research on fluvial facies reservoir residual oil and reservoir managementpossess supervise sense.In this paper , We impose physical simulation instrument on knowing clearly fluvialfacies reservoir residual oil form mechanism,as well set a new mode that utilizes flow cellmethod to study thick oil layer intrinsically residual oil distributive accordance with geologyand exploitation agential aggregate analysis about fluvial facies reservoir residual oildistributive. Thereby,We summarize fluvial facies reservoir residual oil distribution featureof Daqing oilfield by the numbers ,and in the course of La-Sa-Xing oil-field development,succeed in practice and application. It is important for thick oil layer residual oil DUG dive atDaqing oilfield special high water-cut stage.