A Refined Research Of Sand Bodies In Second Type Oil Layer Reservoris Of Sabei Development Area Of DaQing Oil Field

The second-class reservoirs of Sabei,Sedimentary Microfacies in Daqing Oilfield Sand body size and thickness become smaller,the sand body phase change fast,and have strong heterogeneity.in flat,well out of control for a higher rate of sand,only rely on the accuracy of well data reservoir description can not meet the needs Fine Potential o f oilfield. This article according to Sabei,Sedimentary Microfacies northern transition zone of Daqing Oilfield Saertu oil SII and SIII oil group typical second-class reservoirs case,on the basis of the existing wealth seismic data, conduct integration of wells and seismic Fine reservoir characterization studies, start crosswell sandbodies predictive and descriptive, formed second-class reservoirs integration of wells and seismic fine art methods of characterization,and evaluated the method of applicability,Further improved the accuracy of prediction crosswell sand.Based on previous research 、 modern Sedimentation and the outcrop, use seismic sedimentology property sliced give priority, as earthquake trends guide, well point microfacies control,for different types of second-class reservoirs sand discriminate fine characterization. key summed up the high bending composite channel deposit integration of wells and seismic characterization methods:⑴“Well Point verification” correct the actual trend of the abandoned channel;“Modern depositional model” guidance the high bending complex river draw. Narrow river channel sand swing、reassemble the plane rivers、river diversion and confluence and tip off the river changes as characterization emphasis. At the same time from the deposition angle evolution,combined with the characteristics of the earthquake itself,the research area vertically SII、SIII oil group twenty-eight time unit ultra-short-term base-level cycles,confirm integration of wells and seismic best results subzone focus on recent rapid water、the maximum withdrawal of water、partial recent biggest water and underwater near the shore of a smooth transition. The second-class reservoirs integration of wells and seismic reservoirs fine characterization methods and establishing processes,achieve the organic combination of well seismic information,strengthened in line with the actual underground deposition mode control, effectively guide the fine characterization of other blocks of similar reservoirs.