一种纳米气泡驰振驱油方法及系统
The nanobubble galloping oil displacement method utilizes the galloping effect of nanobubbles excited by hydraulic pulses to solve the problem of untapped residual oil in high water-cut reservoirs, thereby improving oil displacement efficiency and recovery rate. It is suitable for high-temperature and high-salinity reservoirs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA UNIV OF PETROLEUM (EAST CHINA)
- Filing Date
- 2025-10-23
- Publication Date
- 2026-07-17
AI Technical Summary
Existing waterflooding technology is difficult to effectively utilize residual oil in high and ultra-high water-cut reservoirs. Foam flooding and microbubble flooding have poor stability under high temperature and high salinity conditions, are prone to gas-liquid separation and cross-flow, and have difficulty entering tiny pores, resulting in low oil displacement efficiency and reservoir damage risk.
A nanobubble galloping oil displacement method is adopted, which uses periodic hydraulic pulses to excite the galloping effect of nanobubbles, and combines membrane dispersion and mechanical shearing to prepare nanobubbles. By utilizing the interface effect of nanobubbles and pulse injection technology, the injection parameters are optimized to improve the oil displacement efficiency.
It effectively improves the development of high water-cut oil reservoirs, increases crude oil recovery, reduces operating costs, avoids chemical residues and reservoir damage, and is suitable for high-temperature and high-salinity oil reservoirs.
Smart Images
Figure CN121429342B_ABST