Product Introduction
Selecting different types of polymers as main agents, adding suitable crosslinking agents, additives and other additives, under the temperature conditions of the oil reservoir, allowing them to preferentially enter the high permeability water channels or cracks, and forming high-strength frozen colloids within a certain period of time under the temperature conditions of the oil reservoir, which can physically and chemically block the high permeability channels or cracks, achieving the goal of precipitation and oil stabilization.
Technical Indicators
Blockage adjustment type | appearance | pH value | Apparent viscosity mPa · s | gelation time | Gel viscosity mPa · s |
Low temperature (25-80 ℃) | Colorless or light brown liquid- | 5-8 | ≤200 | Adjustable for ≥ 8h | More than 100000 |
High temperature (80-130 ℃) | Slightly yellow liquid | 7-9 | ≤500 | Adjustable for ≥ 5h | More than 80000 |
Application
This series of products is mainly used for water plugging in oil wells. Chemical water plugging agents are injected into high water bearing layers using a water plugging pipe column. After reacting in the formation, the chemical water plugging agent blocks the target layer, reducing the water output of the oil well. Suitable for oil well plugging in medium to high permeability sandstone or carbonate reservoirs with a formation water salinity of less than 200000 ppm, with over 100 field applications and an effective rate of over 83%.
