Behind casing cementing tool
US11879305B2 · kind B2 · utility
0Cited by
4References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 19, 2021 |
| Grant date | Jan 23, 2024 |
| Priority date | — |
| Expiry date | Aug 19, 2041 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B41/0078
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The invention relates to a cementing tool for use in oil and gas well decommissioning operations, in particular so called perforate, wash and cement procedures. The tool (1) is designed for running in a well on drill string and for jetting cement through previously formed perforations in the casing (10) to fill the outer annulus (9) with cement. The tool (1) has a cylindrical wall (3) which is formed from steel (11) and elastomeric (5) elements, whereby it is expandable between a first diameter in which it may be run down the well and a second, larger diameter deployed during cementing operations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.