High temperature viscosifier for insulating packer fluids
US10337289B2 · kind B2 · utility
0Cited by
7References
21Claims
0Family size
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Key dates
| Filing date | Nov 25, 2013 |
| Grant date | Jul 2, 2019 |
| Priority date | — |
| Expiry date | Jun 26, 2035 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/24
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An insulating packer fluid including an oleaginous fluid and a styrenic thermoplastic block copolymer and methods of preparing the packer fluid are provided. Also provided are methods of using the insulating packer fluid that include pumping an insulating packer fluid into an annulus formed between two concentric strings of pipe extending into a wellbore.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.