Dirty fluid valve with chevron seal

摘要

An apparatus for controlling a fluid flow in a borehole may include a tool body that retrieves a fluid sample from a subsurface formation. The tool body has a fluid conduit having an inlet for receiving the fluid sample and an outlet for conveying the fluid sample to a selected location. A mandrel selectively blocks flow across the fluid conduit; and a seal disposed on the mandrel includes at least one chevron seal element that cooperates with the mandrel to selectively block flow across the fluid conduit.

主权项

1. An apparatus for controlling a fluid flow in a borehole, the apparatus comprising: a tool body configured to retrieve a fluid sample from a subsurface formation, the tool body having a fluid conduit having an inlet for receiving the fluid sample and an outlet for conveying the fluid sample to a selected location; a mandrel selectively blocking flow along the fluid conduit, the mandrel having a reduced exterior diameter portion; and a seal disposed on the mandrel, the seal including at least one chevron seal element: the seal and the mandrel having: (i) a first position wherein fluid flow is blocked between the seal and the mandrel; and (ii) a second position wherein a fluid flows between the seal and the mandrel and along the reduced diameter portion configured to cooperate with the mandrel to selectively block flow across the fluid conduit.