New magnet tool supplements wellbore cleanup

M-I SWACO has unveiled the MAGNOSTAR, a single-piece tool that provides a magnetic surface area for high-volume ferrous debris extraction when circulation is not enough for wellbore clean-up.

Offshore staff

HOUSTON -- M-I SWACO has unveiled the MAGNOSTAR, a single-piece tool that provides a magnetic surface area for high-volume ferrous debris extraction when circulation is not enough for wellbore clean-up. The tool is specifically designed for high-torque strings, but can also be used in conventional workstrings.

The MAGNOSTAR tool is run in the well on the workstring with other wellbore clean-up tools for a variety of applications, including displacements, post perforating, prefracturing, multi-zone completions, milling, burning, fishing, and smart completions.

To address a client’s needs in Norway, the 7-in. (17.78-cm) MAGNOSTAR tool was run-in-hole with several other M-I SWACO sellbore productivity tools in the clean-up string. The tool collected 13.2 lb (6kg) of ferrous metal debris, most of which was small, although large slivers up to 6 in (15.2 cm) were recovered.

The MAGNOSTAR magnet is a single-piece mandrel with no internal connections. With its rare earth magnets, rated to 350° F (177° C), it can remove up to 200 lb (91 kg) of ferrous material. It is available in common casing/lining sizes and weights, from 13 ⅜ in. to 7 in., and has a casing compatible facing material to minimize casing wear.

09/21/2009

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