Reservoir Description Of Carboniferous Of ????????? Oil Field

????????? Oil Field went into production since 1987,due to data update lagged,the stratigraphic division is not including all strata,and block understanding of the structure is not sufficient,the reservoir evaluation is not fine enough.Combined with the previous research results and other basic data,we systematically review and supplement the stratigraphic division and contrast scheme of predecessors.The main conclusions of the paper can be declared as follows:In this paper,by using the principle of cyclical and equal thickness contrast under the control of the mark layer,adopts the contrast method of leveling section-filling and space closure to form a number of geological main sections of the ????????? oilfield to divide the boundary of each small layer.According to the log data,the reservoir parameter model is calculated,the physical property parameters of each layer are calculated by core data,and the formation interpretation and evaluation are carried out.The reserves parameters are calculated,and the reserves calculation is carried out by the volume method,and the reservoir is evaluated through the permeability,abundance and recoverability.Through the study,the boundary of the 20 layers of five oil groups,such as the Tournaisian,Visean and other three oil groups is carried out,and the III and IV layer of the Visean stage are subdivided.Mocsovian and Tournaisian is open shelf environment;Bashkirian is shelf margin environment;Visean is a tidal delta;????????? oilfield is mainly composed of clastic rocks and carbonate rocks.The porosity and permeability of carbonatite reservoir are generally poor and the heterogeneity is serious,while the clastic reservoir has better porosity and permeability,and the heterogeneity is relatively weak.The reservoir structure type is simple and the reservoir characteristics change greatly.The reservoir is mainly controlled by two major factors of anticline and lithology,and the reserves calculation through the oil and reservoir group has the characteristics of small number of main oil and reservoir,more geological reserves and high concentration of geological reserves.Medium rich,middle,medium oil fields.Reservoir description and evaluation,implementation has a guiding significance for the later development and secondary oil recovery.