Fluid migration shut-off

a technology of fluid migration and shut-off, which is applied in the direction of fluid removal, earthwork drilling and mining, and wellbore/well accessories, etc., can solve the problems of debris caught in the valve, wear or degradation of the valve, and the performance of the check valve is not always adequate to prevent all fluid migration
US20120325468A1Inactive Publication Date: 2012-12-27BAKER HUGHES INC
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
BAKER HUGHES INC
Publication Date
2012-12-27
Estimated Expiration
Not applicable · inactive patent

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Abstract

A downhole assembly, including a line operatively arranged to carry a first fluid, and a trap arranged in fluid communication with the line, the trap operatively arranged to enable the first fluid to flow in a first direction, while capturing a second fluid in a compartment, thereby preventing migration of the second fluid through the line in a second direction opposite to the first direction.
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Description

CROSS REFERENCE TO RELATED APPLICATIONS

[0001] This application claims the benefit of an earlier filing date from U.S. Provisional Application Ser. No. 61 / 500,995 filed Jun. 24, 2011, the entire disclosure of which is incorporated herein by reference.BACKGROUND

[0002] Chemical injection systems are used in the downhole drilling and completions industry. Check valves are included to prevent natural gas and other fluids from undesirably migrating up through the chemical injection lines. The performance of these check valves is not always adequate to prevent all fluid migration, particularly under static conditions (no chemical being injected) or while chemicals are being injected at lower rates. Problems with check valves may include debris caught in the valves, wear or degradation of the valves over time, problematic installations, etc. Accordingly, advances in preventing fluid migration are always well received by the industry.BRIEF DESCRIPTION

[0003] A downhole assembly, including a line...

Claims

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