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US 8,770,286 B2Granted
Downhole fluid filter
AssigneeSchlumberger Technology Corporation
InventorsStephane Briquet, Kevin Zanca, Wade Evans, II
Life of this patent
Estimating the term…
Abstract
An apparatus for testing a subterranean formation penetrated by a wellbore, comprising a tool having a sample flow line an inlet disposed with the tool and configured to establish fluid communication between the formation and the sample flow line to draw a fluid sample into the sample flow line, and an active filter positioned in the sample flow line and providing a filter flow route and a bypass flow route in the sample flow line.
Claims6
A system for a formation testing tool, comprising:
- a module with a fluid sampling inlet configured to draw a fluid sample from at least one of a wellbore and a subterranean formation into a sample flow line, wherein the module is configured with a body forming a filter flow route and a bypass flow route in the sample flow when connected to the tool;
- a filter connected within the filter flow route, the filter within the body;
- a bypass valve in fluid connection with the filter flow route and the bypass flow route, wherein the bypass valve is configured to operate between a filter position routing the fluid sample through the filter flow route and a bypass position routing the fluid sample through the bypass flow route;
- a purge valve in fluid connection with the filter flow route, the purge valve configured to operate between the filter flow route and exterior of the body and a closed position blocking the fluid communication;
- and
- a device movably disposed with the filter, the device being configured to expel the fluid sample from the filter when moved toward the purge valve in the open position.
3 more elements
Dependencies are inferred from the claim text.