Encapsulated polymer flooding method and system for enhancing oil recovery
US11912932B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 21, 2023 |
| Grant date | Feb 27, 2024 |
| Priority date | — |
| Expiry date | Jun 21, 2043 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A10/40
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An encapsulated polymer flooding method and system for enhancing oil recovery includes: (1) determining reservoir parameters, a well deployment, and a development dynamic state of a target oil reservoir; (2) determining a near-wellbore targeted profile control area and a far-wellbore targeted viscosification area; (3) designing and synthesizing an encapsulated polymer according to conditions of the target oil reservoir; (4) evaluating and determining whether the anti-shearing performance, the sustained release and viscosification performance, the injection performance, and the profile control performance of the encapsulated polymer meet expected performance requirements based on laboratory tests; (5) formulating an injection scheme for an encapsulated polymer flooding field; and (6) monitoring the development dynamic state of the oil reservoir; according to the present disclosure, the polymer is wrapped with a shell layer, which greatly reduces the shear degradation during injection of the polymer and effectively reduces the cost.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.