Fuyu Oilfield Eastern Cretaceous Spring Four Reservoir Fine Oilreservoir Research

Fuyu oilfield is located in the south of Songliao Basin East Fuxin uplift of the Fuyu IIIstructure，Is a complicated by faults of multiple high dome anticline, which belongs to thehigh permeability sandstone reservoir fracture structure, exploitation target layer isCretaceous spring four section of Fuyu reservoir. In1970put into development, has enteredthe high water cut stage, the remaining oil distribution of highly dispersed, low-efficiencywater injection, invalid circulation is contradictory and outstanding, exposes part of wellpattern does not adapt, the speed of water cut increases, the reservoir heterogeneity is seriousproblem, urgent need strengthens reservoir fine reservoir research, tapping the potential ofreservoir, raise oil field development effect.To further deepen the understanding to the reservoir, sedimentology, reservoir geologyand petroleum geology theory as the guide, to the fine division and correlation of strata based,integrated application of seismic, drilling and logging data, core information, the spring foursection of Fuyu reservoir carried out on a small layer of contrast, geological structure,sedimentary facies, reservoir sand body, reservoir parameters and system research. Completestratigraphic EC layer fine contrast2377wells, implemented in Fuyu drilling the168wellsbreakpoint168breakpoint, on64main faults were implemented one by one and uniformnumbers, circle the favorable micro structure of more than160, analysis of the sedimentarymicrofacies types, sedimentary background and deposition patterns, performed the single sandbody division, make clear the reservoir sand bodies in the plane, profile and interwell spacedistribution regularities, the logging two explanation, porosity, permeability, oil saturationcompletion logging interpretation1197, clear standard of lower limit of effective thickness.Based on fine reservoir research results, with the dynamic production data, throughcomprehensive analysis and evaluation, to determine the favorable target area, put forward todig go, under the guidance of Fuyu oilfield Eastern development program optimization.