METHOD OF DEFINING STATIC CORRESTIONS

摘要

FIELD: mining. ^ SUBSTANCE: there are performed seismic measurements, then the received data are interpreted and processed. Additionally there performed is electric exploration at combined profiles for examination of near-surface section (NSS) structure in low speed zone. During this process there registered are electromagnetic field changes and electromagnetic wave hodograph curve. There defined is longitudinal electric resistivity. According to the obtained data there defined are united stratigraphically connected geoelectric complexes. NSS geoelectric model is made. Then with the use of well survey data and microseismic velocity survey data there defined is interrelation between the times of electromagnetic and seismic field recording. In each point of electric exploration electromagnetic hodographs are calculated into pseudoseismic. According to the received hodographs there calculated are the values of prognostic interval velocities within each geoelectric complex. For the selected section interval there made are the schemes of prognostic values distribution of interval velocities and its thickness, there calculated are static corrections. ^ EFFECT: improvement of authenticity and informativity of static corrections defining ensured by recording of local inhomogeneities of low velocity zone structure.