Method and Apparatus for Multi-Positioning a Sleeve
A tool for shifting a sleeve into at least one intermediate position between stops has a shifting key that only can move the sleeve a finite amount before it is forced out of contact with the sleeve. An overpull key is released for engagement with the sleeve before the shifting key is forced out. Th...
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Main Author | |
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Format | Patent |
Language | English |
Published |
19.03.2009
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Subjects | |
Online Access | Get full text |
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Abstract | A tool for shifting a sleeve into at least one intermediate position between stops has a shifting key that only can move the sleeve a finite amount before it is forced out of contact with the sleeve. An overpull key is released for engagement with the sleeve before the shifting key is forced out. The overpull key resists movement until a noticeable predetermined force is applied at which point the overpull key is freed from the sliding sleeve for a normal release. If any key fails to release, an emergency release is provided that independently displaces the key so that the tool can be removed. The tool can be operated in either an uphole or a downhole direction to shift the sleeve depending on the orientation of the keys. Embodiments using a single key type are contemplated. |
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AbstractList | A tool for shifting a sleeve into at least one intermediate position between stops has a shifting key that only can move the sleeve a finite amount before it is forced out of contact with the sleeve. An overpull key is released for engagement with the sleeve before the shifting key is forced out. The overpull key resists movement until a noticeable predetermined force is applied at which point the overpull key is freed from the sliding sleeve for a normal release. If any key fails to release, an emergency release is provided that independently displaces the key so that the tool can be removed. The tool can be operated in either an uphole or a downhole direction to shift the sleeve depending on the orientation of the keys. Embodiments using a single key type are contemplated. |
Author | FAY PETER J |
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Snippet | A tool for shifting a sleeve into at least one intermediate position between stops has a shifting key that only can move the sleeve a finite amount before it... |
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SubjectTerms | EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS |
Title | Method and Apparatus for Multi-Positioning a Sleeve |
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