METHOD FOR IDENTIFICATION OF RYPOGASIS STRUCTURES WITH ABNORMALLY HIGH FORMATION PRESSURE FLUID Russian patent published in 2018 - IPC G01V9/00 G01V1/00 G01V1/40 

FIELD: geology.

SUBSTANCE: invention relates to the field of geology, namely to the forecast of depletion-bearing structures with an abnormally high reservoir pressure in the geological section of the sedimentary cover of the platforms. According to the claimed invention, from the seismic survey data on the time sections of the CDP in the halogen-carbonate strata of the sedimentary cover, the areas of reflection loss, within which the negative geological structure of the compensatory type is localized – the sinking sediment, which is identified with the zone of development of the secondary reservoirs of the fractured type in the carbonate inter salt reservoirs and in the contours of which, when drilling a deep well, a possible rypogasis is predicted. In the contours of the identified troughs, subsidence based on a detailed analysis of the CDP data at the level of a separate carbonate reservoir or the interlayer, in the geological section, the spatial position of the regularly located fracture zones of the anomalously hydroconductive carbonate reservoir is clarified, with which depth intervals, the most dangerous for drilling a deep well, are identified.

EFFECT: increase in the technological reliability of oil and gas deposits development.

1 cl, 4 dwg