Electromagnetic sounding method using a transient field spatial derivation on several separations

• Main Authors: MANDELYBAUM MARK MIRONOVICH, VLADIMIROV VIKTOR VASILYEVICH, PESTEREV IVAN YURYEVICH, LEGEIDO PETR YURYEVICH, AGEENKOV EVGENY VLADIMIROVICH, MALYTSEV SERGEI KHARLAMPYEVICH, LISITSIN EVGENY DMITRIEVICH, IVANOV SERGEI ALEKSANDROVICH, ALAEV VALERY NIKOLAEVICH, PETROV ALEKSANDR ARKADYEVICH, KYASPER VLADIMIR EDUARDOVICH, DAVYDENKO YURY ALEKSANDROVICH
• Format: Patent
• Language: Chinese; English
• Published: 27.07.2011
• Subjects: DETECTING MASSES OR OBJECTS; GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; MEASURING; PHYSICS; TESTING

The invention relates to electromagnetic prospecting and is used for surface and marine electromagnetic sounding by means of controllable electromagnetic field sources and is applied in a package oil and gas prospecting works for searching and outlining oil and gas fields. The inventive method is based on the selection of a response from earth materials which are secondary modified by hydrocarbons migration. The invention makes it possible to ensure a set of processing technologies enabling to layer-by-layer determine an electrical resistivity and process characteristics of a medium induced polarisation: a polarizability coefficient, a time constant and a relaxation spectrum width. The inventive method consists in carrying out a measurement by several receiving lines, wherein the positionof two feeding lines of a sounding plant is substantially symmetrical with respect to the receiving lines which are located within a 30 DEG sector from the feeding line extensions, in recording a transient signal by land axia