METHOD OF TESTING PRODUCTIVE STRATA IN THE PROCESS OF DRILLING WELLS AND THE DEVICE FOR ITS IMPLEMENTATION (OPTIONS) Russian patent published in 2018 - IPC E21B49/00 E21B47/00 

FIELD: soil or rock drilling.

SUBSTANCE: group of inventions refers to the field of drilling, namely to the means for studying productive strata of drilling oil producing wells. Method and device provide for the opening of the productive strata with the help of a drilling tool in composition with a drilling bit equipped with a NBM-near bit module with sensors that provide measurement of bottom-hole technological, coordinate and geophysical parameters, transfer to the surface of measured data, before drilling into the well, the drill string is previously provided with a packer installed above the position of the NBM, after the opening of the productive strata, the drilling process is stopped, the opening of the packer is made, which provides closure of outer annulus above the location of the NBM, and draw-down regulator is sent to the inside of the drill string on the smaller diameter pipes, then, with the help of the draw-down regulator, the flow of fluid from the productive strata is called in, at the same time, using geophys sensors of NBM, the hydrodynamic parameters of the productive strata and the characteristics of the formation fluid coming from it are measured, and transfer the measured data to the surface, then the drawn-down regulator is extracted from the drill string and decompressed, then the drilling is continued.

EFFECT: technical result is the expansion of the functional capabilities of the near-bit module – NBM as part of the drilling tool and the reduction of labor costs for research of the discovered productive stratas.

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