Process for the reduction of the relative permeability to water in oil-bearing formations
a technology of relative permeability and oil-bearing formations, which is applied in the direction of fluid removal, chemistry apparatus and processes, borehole/well accessories, etc., can solve the problems of strong decline in oil production, inability to achieve the effect of applied treatments, and increased operation costs for pumping, treatment and discarding of huge volumes of water
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
Problems solved by technology
Method used
Examples
Embodiment Construction
Broadly, the concept of the present invention comprises the injection of aqueous polymer slugs alternated with the injection of spacing slugs of aqueous solutions, said slugs allowing the displacement and separation between the polymer slugs, so that the layer is only formed on the polymer film. This way it is possible to prevent the mixture between the polymer solutions and crosslinking agent, said mixture being a source of undesired tridimensional crosslinking with loss of selectivity and blocking of the formation pores.
In the present specification and claims, the term "partial crosslinking without gel formation" or simply "punctual crosslinking" means that the crosslinking agent that bears at least three positive charges when interacting with the already adsorbed anionic polymer may react with two charges of the same polymer chain (intramolecular reaction) or alternatively with one charge of one chain and another charge of another chain (intermolecular reaction), leaving one posi...
PUM
Property | Measurement | Unit |
---|---|---|
molecular weight | aaaaa | aaaaa |
formation permeability | aaaaa | aaaaa |
formation permeability | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap