Abstract: Most scholars accept that resolution of seismic data is λ/4, but the thickness of most reservoirs that have been found at present is less than λ/4. This paper presents several available methods for prediction of thickness of thin reservoirs and gives definitions of the suitability and boundary conditions of each method, and good results are obtained by applications of these methods to various oil-gas fields.

Key words: seismic resolution, resolution rule, thin reservoir, thickness prediction