Casing string rotation systems and methods

The rotatable casing hanger and running tool system addresses the issue of voids in cement layers by enabling rotation and centralization of the casing string during cementing, improving structural support and fluid isolation through uniform cement distribution.

AU2024220165B2Pending Publication Date: 2026-07-23CACTUS WELLHEAD LLC
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Patent Information

Application Number
AU2024220165
Authority / Receiving Office
AU · AU
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-09-26
Filing Date
2024-09-27
Publication Date
2026-07-23

AI Technical Summary

Technical Problem

The effectiveness of a casing string in supporting and isolating a wellbore is compromised by voids in the cement layer surrounding it, leading to reduced structural support and fluid isolation.

Method used

A rotatable casing hanger and running tool system that includes a hanger body, hanger sleeve, and hanger bearing assembly, along with a tool body, tool sleeve, and tool bearing assembly, allowing the casing string to be rotated and centralized during cementing, thereby improving cement distribution and uniformity.

Benefits of technology

Enhances the structural support and fluid isolation capabilities of the casing string by ensuring uniform cement distribution around it, reducing the likelihood of damage to surrounding components and extending the lifespan of the bearing assembly.

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Abstract

Techniques for implementing and / or operating a well system including a rotatable casing hanger and a rotatable running tool. The rotatable casing hanger includes a hanger body, which is to be secured to a casing string; a hanger sleeve secured circumferentially around the hanger body, in which the hanger sleeve is to be landed on another wellhead component; and a hanger bearing assembly disposed axially between the hanger body and the hanger sleeve. The rotatable running tool includes a tool body that defines a tool bore, in which the tool body is to be selectively secured to the hanger body; a tool sleeve secured circumferentially around the tool body to facilitate maintaining centralization of the tool body and, thus, the rotatable casing hanger; and a tool bearing assembly disposed between the tool body and the tool sleeve. 44805447 20 24 22 01 65 27 S ep 2 02 4 A B S T R A C T 2 0 2 4 2 2 0 1 6 5 2 7 2 0 2 4 S e p 4 4 8 0 5 4 4 7 4 / 14 10D M 54 56 12D 60 60 20 15D 42 40 20C 38C 34B 14D FIG. 4 20 24 22 01 65 27 S ep 2 02 4 1 5 D 6 0 5 6 3 4 B 1 4 D 1 2 D 6 0 2 0 4 2 4 0 2 0 C 3 8 C 2 0 2 4 2 2 0 1 6 5 2 7 S e p 2 0 2 4
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