Downhole tool including a movable element coupled to a deployment piston via a shear feature
The integration of a shear feature between the deployment piston and movable element addresses seal failures and temperature-induced issues in CCUS applications, ensuring reliable operation of downhole tools.
WO2026147935A1PCT designated stage Publication Date: 2026-07-09HALLIBURTON ENERGY SERVICES INC
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- HALLIBURTON ENERGY SERVICES INC
- Filing Date
- 2025-12-30
- Publication Date
- 2026-07-09
AI Technical Summary
Technical Problem
Downhole seals in deployment pistons fail to perform under low temperature conditions, leading to unintended movement of movable elements in CCUS applications, which can be catastrophic.
Method used
Incorporating a shear feature between the deployment piston and movable element to detach them at a predetermined pressure, allowing the movable element to remain fixed in position despite seal failures or temperature changes.
Benefits of technology
Ensures reliable operation of downhole tools by preventing unintended movement of movable elements due to seal compromise or fluid expansion/contraction, even in extreme temperature conditions.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure US2025061564_09072026_PF_FP_ABST
Abstract
A downhole tool includes a housing, a movable element positioned about the housing, the movable element configured to move between an uphole position and a downhole position, a deployment piston positioned within a deployment piston chamber, the deployment piston shearingly fixed with the movable element via a shear feature. In one or more embodiments, the deployment piston is configured to move the movable element between the uphole position and the downhole position upon receiving a lower actuation fluid pressure on an up hole side or a downhole side thereof. A shear feature having a shear value of 133 Kilonewtons (KN) or less, the shear feature configured to shear and thereby release the movable element from the deployment piston upon receiving a greater shear fluid pressure on the up hole side or the downhole side of the deployment piston.
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