METHOD FOR DELIVERING GEOPHYSICAL INSTRUMENTS INTO ZONE FOR EXAMINATION OF HORIZONTAL SECTION OF WELL SHAFT AND DEVICE FOR DIRECT CONNECTION FOR REALIZING SAID METHOD Russian patent published in 2019 - IPC E21B23/14 E21B47/01 

FIELD: physics.

SUBSTANCE: group of inventions relates to geophysical investigations of inclined and horizontal wells by instruments. Method involves delivery of geophysical instruments to the zone of exploration of the horizontal section of the well shaft using a special "rigid" design cable in the lower part of the suspension for pushing the device. According to the invention, the depth suspension is equipped with an additional pushing facilitating material, in form of a bundle consisting of pipes (drilling string or drilling wells) available on the investigated well, they are preliminary lowered into the well and kept on the wellhead by an elevator, and then lowering through them into the well device on the piece of "hard" cable length exceeding the sum of the length of the horizontal section of the well and the bundle of lowered pipes, and the upper end of the "hard" cable is connected simultaneously to the upper end of these pipes and to the cable tip of the logging cable of the elevator, which delivers this suspension to the examination area, by means of device of hinged connection, wherein pipes-weighting agents are simultaneously and guarantor of withdrawal of "hard" cable with device from horizontal section during emergency separation of logging cable. Hinged connection device for method implementation consists of two cable junctions for various geophysical cables structures, combined in one housing, wherein said separate pipe connection assembly is arranged thereat and has fishing neck in its upper part with grooves for releasing pipe catcher.

EFFECT: technical result consists in improvement of reliability of geophysical instruments delivery into the study area.

4 cl, 2 dwg