The paper is devoted to the problem of constructing an algorithm for computing and digital modeling of the full normalized gradient of the gravity anomaly, the solution of which plays an important role in gravity exploration for the geological interpretation of the observed anomalies. To identify density inhomogeneities of rocks, which may be associated with structural features as well as hydrocarbon deposits in the section, methods for calculating gradients and higher derivatives of gravity anomalies are widely used. The paper describes an algorithm developed at the Department of Geophysics of Azerbaijan State Oil an Industry University (ASOIU) for calculating the full normalized gradient of gravity anomalies, used to identify and localize areas of density heterogeneities along the studied section. This algorithm and the corresponding FORSE-FORTRAN program allow the calculation of the values of the full normalized gradient of the gravity anomaly by analytical continuation into the lower half-space. Muradkhanli field was selected as the studied model, in the context of which volcanic-sedimentary sediments of the Mesozoic take part, that are well displayed in the gravitational field. Using modern graphical programs and developed applied algorithms, the profile values ​​of the full normalized gradient of the gravity anomaly of the gravitational field of the Muradkhanli rising are calculated. Using the SURFER program, digital modeling of the full normalized gradient of the gravity anomaly is performed, which gives the most complete and a visual representation of the location of anomalous geological objects and oil and gas fields.

Keywords: algorithm, block-diagram, gravity anomaly, full normalized gradient, gravity model, digital modeling, reservoir type anomaly

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