Fractured Reservoir Modeling And Residual Oil Evaluation In The North Chao 5 Of Chaoyanggou Oilfield

Content: Located at five north area aangonghe horizons of anticline axis chaoyang gou oilfield, the development of the problems existing in the direction of crack is water breakthrough early, water rising fast, cracks not development by effect is bad, oil production declining fast. In order to further enhance the development of the north chao 5 blocks, and carried out the effect of the north chao 5 blocks crack modeling, mathematical model, the quantitative evaluation and comprehensive redevelopment remaining technological research.Based on the research domestic and international fractured reservoir modeling, mathematical model and development technology, based on the status quo of the north chao 5 blocks horizons through research, fault fracture distribution system identification, ancient buckling degrees analysis and fault distance analysis and logging crack interpretation, a comprehensive study cracks of crack strength attribute target block model and crack network model. Through numerical simulation in small layer in the north chao 5 blocks, fractured reservoir of remaining oil from plane, longitudinal from two aspects, analyzes the quantitative evaluation under the potential and adjust the main direction of steady oil, and puts forward the countermeasures of water control comprehensive governance. Get creative research results:1, established can reflect the actual fracture development and reservoir distribution laws of crack model.Using the site core analysis data, single well logging interpretation material toward the north chao 5 blocks fracture parameters and growth rule was described. the fractures of the north chao 5 blocks are all small sinkiang.distributed at east-west a ribbon exhibition cloth, fracture development on both sides or two in fault fault, different area near the middle of cracks in the development of big differences, fracture development from 1 the number to 14 dollars. From single well crack planar distribution look, cracks, and obviously was like development in northern area aangonghe horizons southern fractured than growth. Crack description result and production results agree well with the dynamic analysis, the dynamic data suggest that the production of injection Wells row of water flooding along the east-west common Wells, fracture development area of high water-bearing seriously, water cut, recovery degree in northern area aangonghe horizons than southern high.2, Use auxiliary historical fitting and Petrel Re hydraulic fracturing numerical simulation technology improve the fitting precision, for the remaining the north chao 5 blocks the influential factors were analyzed, and the remaining oil quantitatively and qualitatively comprehensive evaluation.The distribution of remaining oil and crack development direction and the development degree have close relationship. Fracture development area of remaining oil saturation, the overall look, low residual oil saturation in low areas of northern distribution and the east-west than southern low. Areas of high residual oil saturation mainly distributed in reservoir of edge, now can't well spacing control areas and crack not development area.3, Combining with the production dynamic material, according to its regional crack exhibition cloth and towards, is now well nets and fracture development relations, was carried out based on the theory of water cycle of comprehensive exploitation potentialities measures countermeasures study.Through comprehensive adjustment, the expected by comprehensive water cut, oil recovery reduced to 68.5% 60.4% least 1.44 percentage point increase.