The utility model refers to the oil industry, namely the equipment for fishing operations in the well, and can be used to extract the source holder (container) with the radiation inside the chemical radiation element.;The detector consists of a hollow body with a conical surface inside, on which independent plates, pressed together by a spring, move. Outside the body, centralizers of elastic material are installed, which not only center but also act as a piston when the flushing is switched on, ensuring that the trap is delivered to the fishing site, in sloping wells. 2 yl.
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