Apparatus for reducing abrasion and corrosion in mandrels

Details Apparatus for reducing abrasion and corrosion in mandrels Apparatus for reducing abrasion and corrosion in mandrels

1990-01-22

1991-05-28

Dang, Hoang C.

Wells

Conduit wall or specific conduit end structure

Downhole coupling or connector

285 55, E21B 1710, E21B 1718

Patent

active

050185756

ABSTRACT:
An insert for use in a mandrel used in the production string of a well utilizing a gas lift operation is disclosed. The tubing unit and the valve lug forming the mandrel have communicating bores into which the insert, which is formed of an abrasion resistant material such as carbide, is placed. The insert is soldered in place, with the soldering to the valve lug being accomplished through a temporary opening in the valve lug. A method for assembly of the mandrel is described and an abrasion resistant sleeve for inclusion in a valve lug for use with a fluid operated valve is disclosed.

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CAMCO Condensed Catalog, pp. 13-14, 1986.

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