System and method for sealing multilateral junctions
US10385654B2 · kind B2 · utility
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21References
7Claims
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Key dates
| Filing date | Mar 23, 2018 |
| Grant date | Aug 20, 2019 |
| Priority date | — |
| Expiry date | Mar 23, 2038 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B41/0042
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A system and method for sealing a multilateral junction in an oil well is described. Molten material, such as a eutectic or non-eutectic alloy, flows into the junction area and forms a durable seal upon cooling. An expanding alloy may be utilized, which expands upon solidification and which has a melting temperature that is higher than the maximum anticipated well temperature. The alloy is placed within a cavity in the well and held at a temperature above the melting point of the alloy, after which the alloy is cooled down to the ambient well temperature and solidifies and expands within the cavity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.