Deep profile control agent for pressure flooding and channeling plugging in low permeability reservoir and preparation method thereof
By preparing an oil-soluble modifier with a particle size of less than 10 μm, the problem of existing plugging agents being unable to penetrate deep into the formation was solved, enabling selective plugging of low-permeability reservoirs and uniform water injection distribution, thereby increasing oil well production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHINA PETROLEUM & CHEMICAL CORP
- Filing Date
- 2025-01-10
- Publication Date
- 2026-07-17
AI Technical Summary
Existing plugging agents have difficulty penetrating deep into the formation during pressure-driven water injection, thus failing to effectively solve the water channeling problem. Furthermore, they lack oil solubility, making selective plugging impossible.
By reacting oil-soluble polymers, emulsifiers, and dispersants under high temperature and high pressure, a modulator with a particle size of less than 10 μm is prepared. This modulator can penetrate deep into low-permeability reservoirs and soften, bridge, and accumulate at reservoir temperatures to achieve plugging.
It achieves selective plugging of deep low-permeability reservoirs, improves the uniform distribution of water injection, increases the affected area, and improves the oil production of oil wells.
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Figure CN122405243A_ABST
Abstract
Citation Information
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