| Pu 484 block is located in the southern area of Putaohua Oilfield,to the west of Putaohua structure and Aonan nosing structure,the main reservoir is Pu I oil layer of Lower Cretaceous Yaojia Formation,including one reservoir group,three sand group and 11 small layer.With the development of oil field,exposing the problems of rapid lateral variation of reservoir,complex oil-water relationship and various reservoir types.In this paper,through the development of splicing closed processing the two and three-dimensional seismic data on the surrounding area of Punan Oilfield,to interpret the Putaohua reservoir fine structure,complete the study on the characteristics of top structure and distribution of fracture,select the structure development advantageous area,use the area of all exploratory well,evaluation well,development well,use bore log to adjust and contrast the small layer.Building the logging facies model,for single well facies and even well facies analysis,combined with seismic facies results drawing subzone sedimentary microfacies in the study area,summarize the characteristics of sedimentary evolution of sequence stratigraphy framework.According to the thin reservoir and scattered distribution characteristics,to launch seismic attribute extraction research,distinguish layer and group to carry out well seismic joint seismic inversion to prediction,forecast the sand body distribution of the study area.Based on the regional tectonic characteristics,sedimentary characteristics,reservoir characteristics,oil-water relationship and accumulation regularity results,evaluation of oil and gas resources favorable accumulation area,select the favorable reservoir by potential block,on this basis to propose well location deployment.Through the research project to deepen the geological understanding of Pu 484 block surrounding area of Punan oilfield,make sure the block increasing storage potential,have important strategic significance for the sustainable development of oilfield. |
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