Invention Grant
- Patent Title: System for resealing borehole access
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Application No.: US14681681Application Date: 2015-04-08
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Publication No.: US10280707B2Publication Date: 2019-05-07
- Inventor: Graham Styler , Gavin MacMillan
- Applicant: Dreco Energy Services ULC
- Applicant Address: CA
- Assignee: Dreco Energy Services ULC
- Current Assignee: Dreco Energy Services ULC
- Current Assignee Address: CA
- Agency: Conley Rose, P.C.
- Main IPC: E21B34/10
- IPC: E21B34/10 ; E21B34/14 ; E21B43/12 ; E21B43/25 ; E21B34/06 ; E21B34/00

Abstract:
A re-closable toe sleeve is disclosed where the toe sleeve has a port allowing fluid access from the interior of the toe sleeve to the exterior of the toe sleeve. A burst disk is placed inside the port to prevent fluid access from the interior of the toe sleeve to the exterior of the toe sleeve. However upon the fluid in the interior of the toe sleeve reaching a predetermined level the burst disk is removed or otherwise modified to allow fluid access through the port. A sliding sleeve is placed within the toe sleeve so that the sliding sleeve can be moved to cover the port thereby preventing fluid access from the interior of the toe sleeve to the exterior of the toe sleeve or the sliding sleeve may be moved to uncover the port thereby allowing fluid access from the interior of the toe sleeve to the exterior the toe sleeve. The sliding sleeve is mechanically moved from the surface and is typically run into the well in the open position such that the port is uncovered by the sliding sleeve.
Public/Granted literature
- US20160298417A1 System for Resealing Borehole Access Public/Granted day:2016-10-13
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