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US 2024/0109148 A1Published application
Metal packers
AssigneeVertice Oil Tools Inc.
InventorChristopher Cockrill
Life of this patent
Estimating the term…
Abstract
A weld joint and method of welding a joint in parts subject to expansion in use. The weld joint is between dissimilar steel alloys and a weldable nickel-base shim is located between faces of the steel alloys prior to welding by an electron beam. Embodiments of an expandable metal sleeve and a metal packer for use as an isolation barrier in a well, are described which include the weld joint.
Claims20
A weld joint for parts subject to expansion in use, comprising:
- a first part comprising a first steel alloy, the first part having a first face of a first surface area;
- a second part comprising a second steel alloy, the second part having a second face of a second surface area;
- the first steel alloy being dissimilar from the second steel alloy;
- a weldable nickel-base shim, inserted between the first and second faces,
- and characterised in that:
- the first and second faces are electron beam welded together with the nickel-based shim being entirely consumed to form a weld metal composition of the weld joint as the first and second parts are fused together.
3 more elements
A method of welding a joint in parts subject to expansion in use, the method comprising the steps:
- (a) providing a first part comprising a first steel alloy, the first part having a first face of a first surface area;
- (b) providing a second part comprising a second steel alloy, the second steel alloy being dissimilar to the first steel alloy, the second part having a second face of a second surface area;
- (c) bringing the first and second faces together and inserting a weldable nickel-base shim between the first and second faces;
- (d) using an electron beam to form a weld metal composition which entirely consumes the weldable nickel-base shim as the first and second parts are fused together to create a weld joint between the first and second parts;
- and
- (e) applying force on at least one side of the weld joint to cause the second part to expand relative to the first part.
3 more elements
Dependencies are inferred from the claim text.