Side pocket mandrel with improved orienting means

Details Side pocket mandrel with improved orienting means Side pocket mandrel with improved orienting means

E - Fixed Constructions

21

B

166/42

E21B 23/06 (2006.01) E21B 23/03 (2006.01)

Patent

CA 1200194

SIDE POCKET MANDREL WITH IMPROVED ORIENTING MEANS Abstract A side pocket mandrel having an orienting sleeve therein with improved guide surfaces for more reliably orienting a kickover tool with respect to the mandrel preparatory to installing a flow control device in or removing such a device from the mandrel's offset receptacle bore. background of the Invention Field of the Invention This invention relates to gas lift apparatus and more particularly to side pocket mandrels for use in gas lift wells. Description of the Prior Art Side pocket mandrels with orienting means therein for orienting a kickover tool used in installing well flow control devices in or removing them from their offset receptacles have been used for many years. Side pocket mandrels and kickover tools therefor have been supplied by a number of suppliers in the industry. Kickover tools from one supplier may not work well in the side pocket mandrels of another supplier even though such kickover tool may have been intended for use in such side pocket mandrel. It has been desirable to provide a side pocket mandrel which would be compatible with virtually any kickover tool designed for use with such mandrel and to minimize difficulties arising from such mismatching. The orienting means in side pocket mandrels have been in the form of a sleeve surrounding the bore through the side pocket mandrel, this sleeve being provided with a pair of symmetrical guide surfaces generally helical in shape leading from a point at the lower end of the sleeve upwardly to the lower end of a longitudinal orienting slot. In some cases

419410

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