Emergency shielding device for neutron tool radiation while drilling

The utility model relates to a while-drilling neutron tool radiation emergency shielding device which comprises two semi-cylinders, the two semi-cylinders are symmetrically arranged, a semi-circular groove is formed in the middle of each semi-cylinder, the semi-circular grooves and the semi-cylinders are coaxially arranged, and the semi-cylinders are arranged in the semi-circular grooves. After the two semi-cylinders are in butt joint, the two semicircular grooves form an accommodating cavity capable of accommodating a sub-tool; the number of the half linings is two, and each half lining is arranged in the corresponding semicircular groove; the two ends of the connecting plate are detachably connected with the half lining and the half cylinder respectively. The radiation emergency shielding device for the neutron tool while drilling has the beneficial effects that the radiation emergency shielding device for the neutron tool while drilling can be simultaneously used for neutron tools of multiple specification