METHOD FOR DETERMINING OPTIMUM DEPTH OF CHARGE IMMERSION AND CONSTRUCTING MODEL OF UPPER PART OF THE SECTION BASED ON DRILLING DATA DURING SEISMIC SURVEY Russian patent published in 2021 - IPC E21B47/00 G01V1/00 E21B49/00 

FIELD: seismic survey.

SUBSTANCE: invention relates to the field of seismic exploration, in particular – for determination of boundaries of zones of low and low speeds of seismic waves propagation during seismic operations. Method, according to which performing experimental work on selection of optimal depth of charge immersion and operation of microseism logs (MSL), characterized in that, in addition, during the test work for determining the optimum depth of charge dipping and during MSL performing continuous recording of drilling parameters, from which the value of specific energy intensity of drilling is calculated and the rock connectivity parameter characterizing the charge charging optimum depth, during the main seismic exploration operations, directly in the process of drilling of each well, determining the optimum depth of the charge according to the selected connectivity parameters, MSL results are used to find a correlation between connectivity parameter and longitudinal wave velocity, drilling data are used to construct high-density models of strength and elastic characteristics of rocks, from which, based on the found correlation relationships, a depth-velocity model of the upper part of the section and a priori static corrections are calculated.

EFFECT: high accuracy and reliability of determining the depth of charge immersion, high accuracy of constructing a depth-velocity model of the upper part of the section, high quality of seismic data.

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