PROTECTING CYLINDER FOR DRILL LEVER FOR ASSEMBLING DEEP WELL DRILLING APPARATUS ON LAND FOR MINING PETROLEUM * NATURAL GAS AND LIKE

摘要

The invention provides a protective sleeve for drill pipes used for the drilling of deep wells in the ground for the recovery of oil, natural gas or similar, this protective sleeve being attachable in the connection area of the individual drill pipe rods and comprising a resilient inner part in the form of a ring part and a protective covering of a flexible and/or elastic material surrounding this inner part, characterized by this protective sleeve comprising two half shells with tension claws on the inside and spring segments on the outside adapted to be, joined together in a hinge-like fashion to form a closed ring.