Wells – Processes – Sampling well fluid
Patent
1993-03-10
1994-11-29
Neuder, William P.
Wells
Processes
Sampling well fluid
166169, F21B 4908
Patent
active
053681002
ABSTRACT:
A coiled tubing conveyed sampling apparatus includes an actuator housing having a housing interior and having a proximal housing end including a connector for connecting the housing to a coiled tubing string so that a tubing bore of the coiled tubing string is communicated with the housing interior. A one-way check valve is disposed in the housing interior and allows well fluid from the well bore to fill the tubing bore of the coiled tubing string as the sampling apparatus is run into the well. The check valve isolates the tubing bore of the coiled tubing string from the well when pressure in the tubing bore exceeds pressure in the well. A sampling tool is attached to a lower end of the actuator housing. A pressure responsive actuator is disposed in the housing interior and actuates the sampling tool in response to pressure in the tubing bore of the coiled tubing string exceeding pressure in the well by a first predetermined value so that a well fluid sample is drawn into the sampling tool and trapped in the sampling tool. The apparatus is especially useful in taking samples from horizontal portions of highly deviated wells.
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Lewandowski David
Schultz Roger L.
Beavers Lucian Wayne
Druce Tracy W.
Halliburton Company
Neuder William P.
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