METHOD OF DRILLING TOOL GEOLOGICAL STEERING AND ITS TRAJECTORY CONTROL, WHILE WELLS DRILLING IN THE SPECIFIED DIRECTION Russian patent published in 2017 - IPC E21B47/22 E21B7/04 G01V3/08 

FIELD: mining.

SUBSTANCE: method includes monitoring of the drilling tool position in the inter-well space - inter-well pumping (IWP), while wells boring by means of a coordinate measuring system during the MWD drilling, at the same time apply the sensing method by transient buildup of the electric field in the near field region - EZS-B to calculate the electrical resistivity of rock to determine the position and unrecovered oil border, occupying the uncertain position in IWP, while providing the control of the drilling tool position in IWP, while wells boring in the real time mode, drilling toward the indicated unrecovered oil, taking into account the position and unrecovered oil location borders in IWP, being calculated by EZS-B method, and during the provided control, make remarks in the coordinate measuring system MWD for drilling tools guidance, providing the direction change in the drilling tools guidance forward the indicated unrecovered oil location.

EFFECT: improved accuracy of the shaft foot guidance of the drilling horizontal well, pointing into the right direction, such as horizontal wells ducting to the unrecovered oil, the exact location of which is not defined in IWP.

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