Modified casing buoyancy system and methods of use
US12006786B2 · kind B2 · utility
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17References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 11, 2022 |
| Grant date | Jun 11, 2024 |
| Priority date | — |
| Expiry date | Jul 8, 2042 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B2200/08
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
According to embodiments, a modified casing buoyancy system is provided for use as either one or both a casing buoyancy tool during casing operations and a cement plug during cementing operations, the apparatus being operably connected to a casing string and having at least two tubulars, wherein a portion of at least one (outer) tubular comprises at least one connector for controllably releasing said tubular downhole, and at least a portion of the other (inner) tubular comprises a dissolvable portion for controllably degrading thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.