APPLICATION OF FRAME FILTERING TECHNIQUE IN PETROLEUM GEOCHEMICAL EXPLORATION

Traditonally one background value represents the geochemical background of a region covering thousands upon thousands square kilometres,however,it has been replaced by the technique of frame filtering. In this way a heterogeneous background field is described as a rising-falling geochemical relief surface. The technique provides a new way of technology and effective method for the identification of local weak abnormals in a low background region.