Abstract: The invention relates to the field of petroleum engineering and can be used during hydrocarbon production in directional, deviated, horizontal and complex-profile wells. A protective roller centralizer with a cable channel is provided, which comprises: a housing, inside which the cable channel extends longitudinally to the housing along the entire length of the housing; a clamping half-yoke made of at least two parts which are installed in a mirror-like manner and adjacent to each other. The at least two parts are pivotally connected to the housing on one side and are configured to be attached to each other on another side by means of a detachable fastening connection to form an inner cavity for accommodating a tubing pipe. The housing and the clamping half-yoke have ribs formed on their outer surface.

Abstract: The invention relates to safety devices for cable power lines of submersible electric motors used as drives of centrifugal pumps for the production of oil and other formation fluids. A device for protecting and attaching a cable to pipes contains a housing with a slot for a cable, along the edges of the side walls of the housing there are clamps, one end of which is hinged on the first side wall of the housing, the other end of the clamps is hingedly connected to the corresponding lock, while the locks contain connecting loops with projections, and the clamps are made with grooves and a stop projection corresponding to the projections, the other end of the locks contains projections to create a rigid connection with the second edge of the side wall of the body when the lock and body are pulled together.