Invention Grant
- Patent Title: Washpipe free feature with ball and magnet
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Application No.: US17963757Application Date: 2022-10-11
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Publication No.: US11952873B1Publication Date: 2024-04-09
- Inventor: Ibrahim El Mallawany , Stephen Michael Greci
- Applicant: Halliburton Energy Services, Inc.
- Applicant Address: US TX Houston
- Assignee: Halliburton Energy Services, Inc.
- Current Assignee: Halliburton Energy Services, Inc.
- Current Assignee Address: US TX Houston
- Agency: C. Tumey Law Group PLLC
- Agent Scott Richardson
- Main IPC: E21B43/12
- IPC: E21B43/12 ; E21B33/127

Abstract:
A washpipe free feature may include a housing defining a chamber having a bypass portion and a securing portion. The housing has first and second bores to put the bypass portion in fluid communication with an annulus of a wellbore and a central bore of a downhole tubular, respectively. Further, the washpipe free feature includes a magnet secured in the bypass portion, a ferromagnetic ball disposed within the bypass portion, and a piston disposed within the chamber. A distal end of the piston blocks the ball from contacting the magnet in a run-in position such that the ball may plug the first bore in response to fluid flow from the tubular toward the annulus. Additionally, the piston is slideable to an open position such that the magnet may hold the ball out of a flow path between the first bore and the second bore in the bypass portion.
Public/Granted literature
- US20240117718A1 Washpipe Free Feature With Ball And Magnet Public/Granted day:2024-04-11
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