Low-shrinkage and high-strength plant-based resinous blocking agent and preparation method thereof
US12134735B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 12, 2023 |
| Grant date | Nov 5, 2024 |
| Priority date | — |
| Expiry date | Dec 12, 2043 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/141
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to a low-shrinkage and high-strength plant-based resinous blocking agent and preparation method thereof, and belongs to the technical field of oilfield development. The resinous blocking agent consists of the following substances according to weight parts: 37.2˜47.8 parts of epoxy plant oil, 19.8˜37.2 parts of benzoxazine, 22.9˜31.6 parts of curing agents, 0.8˜1.8 parts of initiators, 1.2˜1.8 parts of toughening agents, 0.5˜1.2 parts of reinforcing agents, wherein the sum of the weight parts of the above substances is 100 parts, the epoxy plant oil is obtained through epoxidation on unsaturated carbon-carbon double bonds in a molecule of dehydrated plant oil; the benzoxazine is synthesized from long-chain diamine, monohydric plant phenol and paraformaldehyde. The blocking agent has the advantages such as high compressive strength, degradability, low shrinkage and excellent plugging performance, is easy to obtain cheap raw materials and controllable to a preparation process, can meet the requirements of oil-gas reservoirs for high-strength blocking agents, and has a broad market prospect.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.