Controlled release solid scale inhibitors
US11142680B2 · kind B2 · utility
2Cited by
100References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 18, 2017 |
| Grant date | Oct 12, 2021 |
| Priority date | — |
| Expiry date | Dec 18, 2037 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/26
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Compositions and methods of preparation and use for controlled release solid scale inhibitors used in hydraulic fracturing operations in oil and gas wells. The controlled release scale inhibitors comprise amorphous glass which is a reaction product of a phosphorus-containing compound, a calcium-containing compound, a magnesium-containing compound and base. The composition has a predetermined dissolution rate for controlled release of scale inhibitors in induced hydraulic fractures in hydraulic fracturing treatment of oil or gas wells.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.