Study On Thecorresponding Relationship And Development Countermeasures Of Chang 6 Single Sand Body In Sai 130 Area

By studying the regional sedimentary background and the static data of the reservoir in the Sai 130 well area of An Sai Oilfield,combined with the development dynamic data,the division and comparison of sublayers are carried out,and the relationship between the vertical superposition and horizontal connectivity of single sand bodies and the Distribution of interlayers.On the basis of the division and comparison of the single sand body,the physical properties of the single sand body are studied in detail,and the longitudinal and transverse sections of the single sand body are drawn.Combining perforation information and production performance,study the connectivity of single sand bodies between wells,Clarify the corresponding relationship between injection and production,and formulate reasonable water injection development policies.Learned from this study:The thickness of Chang 6₁^1-2in Chang 6₁layer in the study area is the largest among the sublayers,which is the main layer of this study.In Chang 6₁^1-2,2-4single sand bodies are generally developed,and the thickness of the single sand bodies is mostly 2-6m,The single sand bodies are generally muddy or calcareous interlayers,and the thickness of the interlayers is mostly 0.1-1m.With the injection wells as the center,the control degree of water flooding in the statistical well group is mostly above 70%.The reasonable perforation degree of infill wells has been studied.The perforation degree of low aquifer can be appropriately increased according to the actual situation within a reasonable range.After infilling,the control degree of the well pattern on the single sand body has been effectively improved,ensuring the continuous and stable production of the oil reservoir in this block.