The Deposition Characteristics And Favorable A Rea Screening Of The Eastern Side Of Xi127-Ban 10 Sand Body In Xifeng Chang 8

Xi feng Oilfield is the main development construction area of changQing.Xifeng Oilfield main production horizon that is chang 8 production horizon belong to the southwest depositional system, braided river delta front deposition, deposition in the southwest-northeast. For Dong Zhi-Baima chang 81 of the main belt is about 100km and its width of about 5-10km, thickness of sand body is large, general superposition thickness of sand body is greater than 15m, the sand body corresponding relationship is good and distribute stablely, the area of reservoir is large. Since 2002, Xifeng oilfield main belt deployment completed a total production capacity of 1 million 570 thousand tons,And now the output is 1600 tons. And on the east side of Xifeng chang 8 and Xifeng main belt are both belong to the southwest depositional system,According to the research point of view, on both sides of the Xifeng chang 8 genera of main channel bifurcation or a distributary channel,deposition is relatively weak; sand body changes rapidly and distributed unstable, leading to the production direction is unknown and difficult at present.This research mainly aims at the existing problem, through Ihe development of Xifeng East chang 8 sedimentary facies and reservoir layer characteristics, diagenesis, pore structure and flow characteristics, storage layer comprehensive evaluation and reservoir research, a clear research about sedimentary system and the layer of small shoreline are maked out,We define the Chang 8 reservoir in different research areas and the main belt, evaluate the reservoir heterogeneity and categories, reveal the oil reservoir enrichment rules and main control factors as well as suggest favorable direction deployment of exploration appraisal well, through visual fluidity method and other methods, we predict Xifeng East long 8 single well production, so as to select the favorable production and construction blocks.Through systematic research,It is clear that the later production diection is on the east side of Xifeng chang 8, which laid a solid foundation for Xifeng oilfield production.