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US 10,895,122 B2Granted
Methods and systems for disconnecting casing
AssigneeVertice Oil Tools Inc.
InventorMohamed Ibrahim Saraya
Life of this patent
Estimating the term…
Abstract
Examples describe systems and methods for a tool to remove portions of casing from a wellbore. A tool may include a bottom sub-assembly and casing that selectively detach from a sub-assembly. This may allow for tools and casing within the wellbore to be efficiently and effectively removed from the wellbore without having to cut tools down well.
Claims20
A detachable tool comprising:
- an upper sub-assembly formed of an adjuster sleeve and a support sleeve, the adjuster sleeve including an inner projection and an outer projection, the support sleeve having a first outcrop and a second outcrop, the first outcrop being positioned closer to a proximal end of the detachable tool than the second outcrop, and the first outcrop having a larger outer diameter than the second outcrop, wherein the adjuster sleeve includes a shaft and a collet, the outer projection increasing an outer diameter of the collet and the inner projection decreasing an inner diameter of the collet;
- a lower sub-assembly, wherein the lower sub-assembly is temporarily coupled with the upper-sub assembly;
- the upper sub-assembly being detachable from the lower sub-assembly after moving the support sleeve.
A method associated with a detachable tool comprising:
- temporarily coupling an upper sub-assembly with a lower sub-assembly, the upper sub-assembly including an adjuster sleeve and a support sleeve, the adjuster sleeve including an inner projection and an outer projection;
- temporarily coupling the adjuster sleeve and the support sleeve together at a first location via a temporary coupling mechanism;
- coupling the support sleeve and the adjuster sleeve together at a second location via the inner projection of the adjuster sleeve and a first outcrop on the support sleeve after the temporary coupling mechanism is sheared;
- retrieving the support sleeve and the adjuster sleeve together while the support sleeve and adjuster sleeve are coupled together at the second location;
- detaching the upper sub-assembly from the lower sub-assembly after moving the support sleeve.
2 more elements
A detachable tool configured to be positioned adjacent to existing casing comprising:
- an upper sub-assembly with a ball seat, an adjuster sleeve and a support sleeve, the adjuster sleeve including a collet with an inner projection and an outer projection, the support sleeve having a first outcrop and a second outcrop, the first outcrop being positioned closer to a proximal end of the detachable tool than the second outcrop, and the first outcrop having a larger outer diameter than the second outcrop wherein the support sleeve within the detachable tool is configured to move axially;
- a lower sub-assembly, wherein the lower sub-assembly is temporarily coupled with the upper-sub assembly;
- a passageway extending from an inner diameter of the lower sub-assembly to an outer diameter of the lower sub-assembly, wherein the upper sub-assembly is detachable from the lower sub-assembly after the support sleeve moves axially.
Dependencies are inferred from the claim text.