| Binnan oilfield, which is on the west of Binnan-Lijin faulting-belt, is laid on the west-northmargin of Dongying depression, the north is Bin country heave and the EW is Lijin sag. The Es2and the Es3 of the 8th block of the 1st area of Binnan oilfield are the main reservoirs, which arealso the earliest exploited area of Binnan Petroleum Company. They have been explored andexploited for thirty years since the abundant hydrocarbon flow was discovered in Es2 of B2 wellin 1965, The fast increasing of water content has resulted in the status of subsurface geologybecomes much more complex and the contradiction in the groups (and between the groups) ismuch more obvious, it also made the relationship between the water injection and oil recovery incoordinate and the water flooding serious. The EOR dropped quickly and the stabilization ofproducing got terrible. The theories and methods of Sequence stratigraphy,processing sedimentology and genesisstratigraphy are colligated and used in this paper. The sedimentation system from detrital fan todelta fan of Es3 and Es4 of Lijin-Binnan faulting-belt is established and the characteristics aswell as the evolutionary process of the fans are analyzed based on the summarization of geologicbackground of this area. The reservoir types, feature of single conglomerate body and factorsaffecting the cause of reservoir property are discussed. Based on the discussion above, the featureof single conglomerate body and distribution law are dissected, what's more, available oil zonesof single conglomerate body are forecasted and the next exploration area is advised. From thepaper we have some cognitions below: 1.It is pointed that the sedimentation system of conglomerate body is from alluvial fan todelta by the research of core and processing combined with sedimentology theory and mapping.The sediment combination and geneses facies are subdivided particularly. Two types of stratasequence are summed up. 2.The scale and vertical sequence of the bottom and upper of Es4 and the bottom of Es3 areanalyzed by the change of glutenite thickness and effective thickness and their interrelation. Thescale of fan body is large and the intensity is great at the beginning of the depression formation.At this stage, mud-rock flow breccia with poor property distribute extensive from fan root to fanmedium. As the depression growing, fan body move back because of sedimentation overlap. Tothe upper of Es4 and the bottom of Es3, the growing intensity of fan body drops off. The mainsedimentary facies is braided channel in fan fringe. Based on the analysis above, the evolutionaryseries of Lijin and Binnan fan bodies is established. 3.Vertical structure and developmental phases of some fan body are discussed together withthe contrast among the bodies firstly with the principle of sedimentology combined with leveltime slice of 3D-seismic. The single fan bodies which the wells of L341,L372,L561 and L562meet developed at the same time. And the retrogradation fan bodies from top to bottom. whichthe wells of L85,L851,L852 meet developed at different time which growed alongsedimentation inclination, they have inheritance in the view of strata sequence .The developmentof fan bodies underwent 6 periods with 3 phases. The acknowledgement of distribution law andcontrast relationship of fan bodies is useful to forecast and find new oil fan bodies. 4.The petrology feature and reservoir property of fanglomerate are analyzed. The clasticfragment composition is complex and textural maturity is low. The main type of the researchedreservoir is medium- micro porosity, low permeability. It is pointed that the thinness of porethroat radius affects reservoir property dominated. 5.The main sedimentation types include delta plain braided channel and delta front, and theavailable oil facies belt is between the plain braided channel and delta front, the oil horizonmoved from north to south while it si from bottom to top as the re...
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