Thin Reservoir Prediction Using Well-seismic Combination Technology

The Hudson oilfield is located in the Hudson tectonic belt of the Lunnan low uplift in the Tabei uplift.The main oil and gas bearing strata are Carboniferous and Ordovician.Hudson oilfield has experienced more than 20 years of exploration and development,the main Donghe sandstone reservoir is buried deep,the underground geology is complex and diverse,and the ground environment is complex and changeable,affecting the accuracy of seismic imaging.Thin reservoir,mostly 5-10 meters,and even face the demand of 2-3 meters;reservoir basically into the middle and late development,high water cut,low recovery,stable production difficult;in view of the problem that the implementation of the structure is not fine enough,which leads to the prominent contradiction between wells and earthquakes,the faults are finely interpreted,the seismic fault identification technology is carried out,and various means are explored to maximize the identification and characterization of the spatial distribution of the faults.For example,by using multiple filtering methods,the quality of coherent attributes is improved through the interpretative processing of seismic data,and the difficulty of identifying faults with low signal-to-noise ratio is solved.Further development of thin reservoir prediction technology,in order to identify the ultra-deep,thin reservoir space distribution characteristics,to solve the problem of development of fine injection and production,according to the actual situation of seismic data,from the inversion method and frequency characteristics,research thin reservoir identification method.