Well test apparatus and methods
A test tool is described for testing a well to be run on a flexible line and anchored in downhole receptacle means in a flow conductor therein for controlling flow through the flow conductor, the tool being openable and closable by tensioning and relaxing the flexible line to permit and prohibit flow therethrough, the tool having a flow passage for conducting well pressure from therebelow to pressure sensing means thereabove all the while the test tool is in the well, the downhole receptacle having a pair of internal annular recesses providing a pair of oppositely facing abrupt lock shoulders therebetween. The test tool consists of: a. tubular mandrel means having lateral flow port means near its upper end; b. lock keys mounted on the tubular mandrel means and configured to engage the pair of recesses and the pair of oppositely facing lock shoulders in the downhole receptacle means, the keys being movable between retracted and expanded positions; c. means biasing the keys outwardly toward expanded position; d. key retractor sleeve means slidably mounted on the tubular mandrel means and having cam means thereon engageable with the lock keys to retract them to unlocked position responsive to upward movement of the key retractor sleeve means relative to the tubular mandrel means; e. control ring means rotatably carried by the retractor sleeve means and having inwardly projecting pin means fixed thereto; f. tubular body member means having means on one end thereof for connection to a conductor cable or wire line and having its other end telescoped over the upper end portion of the tubular mandrel means for limited longitudinal movement thereto; g. biasing means between the tubular mandrel means and the tubular body member means biasing the tubular body member means downwards relative to the tubular mandrel means; and h. means on the tubular mandrel means engageable with the receptacle to seal between the receptacle and the tubular mandrel means.
- Assignee:
- Otis Engineering Corp., Dallas, TX
- Patent Number(s):
- US 4583592
- OSTI ID:
- 5669539
- Resource Relation:
- Patent File Date: Filed date 27 Apr 1984
- Country of Publication:
- United States
- Language:
- English
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