Fine Reservoir Description Of Chang6Reservoir Of Shuanghe Area

After several years development of Chang6reservoir of Shuanghe area, its oil productionhas been considerably lower than the initial development. Currently the water flooddevelopment contradiction such as water cut rising fast, comprehensive diminishing fast, lowwater-flooding efficiency is becoming increasingly conspicuous. To search for the appropriateadjustment and development technology, this paper has carry out fine reservoir descriptionresearch led by geology, logging technology, reservoir description technology and so on theorysubject.Based on the fine substrata division and correlation of Chang6oil layer of Shuanghe area,this article studies the reservoir structure characteristics, sedimentary microfacies andsandbody distribution characteristics in detail, makes analysis of the reservoir heterogeneity,and predicts favorable areas in Chang6reservoir, provides guidance for the later developmentof the Chang6reservoir.The structure of study area Chang6reservoir is gentle west lean-to, with small noseshaped. Subgroups belong Delta front facies, further divided into underwater distributarychannel, microfacies interdistributary Bay. Reservoirs are low~extra-low porosity andextra-low~ultra low permeability reservoirs, characterized by strong non-organic. Favorablearea is divided into Class I and Class II, Class I is high-yielding oil field development area, IItype is oilfield development potential and stable area.