The method of expansion of a tubular element suitable for installation in a well, the apparatus for expansion of a tubular element in a well, the device to produce one or more areas of insulation coating hanger, fishing tool, head of well, buffering of abandonment, screen The sand expansu00cdvel, the test apparatus of pressure well, expander buffer stack, bridge plug.The connector of the tube, tool of placing of selective chemical device, acoragem, bellows expander system subterru00c2neo system patch, patch closure of drllllng, system expansion of coating telescu00d3pico.

摘要

A method of expanding a tubular element in a well utilising an expander tool comprising: a flexible sleeve 18 having an outer diameter less than or equal to the inner diameter of the tubular element (26, figure 3) and reinforcing wires 21; a cone expander section 12 on which the sleeve 18 is mounted, and having a narrow end that fits inside the sleeve; and a mandrel extending 14 from the rear of the cone expander section. The expander tool including the sleeve is positioned at a predetermined location in the tubular element to be expanded and the sleeve is fixed at a predetermined location by retaining means and the cone expander section is urged through the (preferably lubricated) sleeve from one end to the other so as to expand the sleeve 18 against the inside of the tubular member (26, figure 3) and cause it in turn to expand. The expander exits the other end of the sleeve and the sleeve contracts around the mandrel 14 and the device is moved to another location.