Reservoir Facies-Controlled Modeling & Remaining Oil Distribution Of Gasikule E₃¹

This article in view of the aeolotropism between reservoirs, the small water swept volume in high water cut stage and the low flushing efficiency, taking Gasikule E₃¹ oil reservoir as an example, with the residual oil distribution as the center, using mathematical geology tatistical method, combinating the geology, log and test data and production performance information etc, collating reservoir static prediction and performance analysis, reservoir performance research and reservoir simulation. The thesis makes an extensive, ingoing and systematic study about the reservoir model. Through the study, knowing the formation mechanism and distribution regularity macroscopically in the area, building up the interpretation model and potential area model of the residual oil between wells quantitatively, the thesis could instruct the residual oil distribution.With regard to the establishing reservoir model. On the basis of fine dissection, combines sedimentary microfacies and fluid-facies to control reservoir parameters, establishes the facies controlled model of oil reservoir and physical property distribution, adopting multistage globular alliance fitting model and the best fitting facies-control test variogram function curve to research the 3D distribution of reservoir parameters, using the facies-controlled-kriging to build up the distribution model of reservoir sand body, ENS, porosity, permeability and water saturation etc. After transform reservoir predication model to reservoir mathematical model, adopting reservoir simulation technique to history matching and dynamic monitoring, and constantly adjust the reservoir predication model. The end, we have established a aggregate-model by dynamic and static state .About the description of residual oil. The thesis studies the residual oil distribution regularity from interlamination, layer inner and tabular surface, builds up the horizontal and 3D residual oil distribution model of river-delta reservoir, analyzes the affecting factor, for example, reservoir heterogeneities, production performance characteristics, field managements etc, establishes many kinds of residual oil formation modes, after that, demonstrates and optimizes the measure of tap the potentialities. These conclusions above are very important and significant to reservoir development plan regulation next.