Take you to understand degradable polymer fracturing fluid thickeners
As a kind of environment-friendly material, degradable polymer has been paid more and more attention as the global environmental problem becomes more and more serious. Fracturing fluid is an important tool to increase oil well productivity. However, traditional fracturing fluid thickeners often pollute the environment, so it is of great significance to research and develop degradable polymer fracturing fluid thickeners.
First, the significance of degradable polymer fracturing fluid thickeners
1. Environmental friendliness: Degradable polymer fracturing fluid thickeners have good biodegradability, which can reduce environmental pollution and reduce ecological risks.
2. Save resources: Traditional fracturing fluid thickeners often use non-renewable resources such as mineral oil, while degradable polymer fracturing fluid phase agents can be prepared from biomass resources, providing better sustainability.
3. Improve production efficiency: The degradable polymer fracturing fluid thickener has excellent stability and rheological properties, which can improve the viscosity and fluidity of the fracturing fluid, thereby improving the production efficiency of oil wells.
Commonly used fracturing fluid thickeners
1. Salt-resistant resistance-reducing and sand-carrying two-in-one thickener
The salt-resistant drag-reducing and sand-carrying two-in-one thickener is a thickener for fracturing fluids designed and developed according to the new supramolecular structure theory and has complete independent intellectual property rights. The emulsion is prepared by reverse-phase emulsion polymerization, and its solubility, shear resistance, rheological property, temperature resistance, sand-carrying property, resistance reduction rate, salt resistance, glue breakage and backflow performance are investigated.
The research results show that the fracturing fluid thickener is a cleaning product that integrates multiple functions such as drag reduction, sand carrying, and discharge assistance. It has multiple effects in one dose and can be mixed online. The seamless switching between slippery water and glue can be realized by changing the dosage, and the integration of slippery water and glue can be realized, which has a good application prospect.
2. Efficient drag reducing agent
Fracturing fluid viscosity increases, pipeline friction and pump power loss also increase. In order to effectively utilize the efficiency of the pump, it is necessary to reduce fracturing fluid friction. Common drag reducing agents for water-based fracturing fluids include polyacrylamide and its derivative polyvinyl alcohol (PVA), vegetable gum and its derivatives and various cellulose derivatives can also reduce friction.
This series of drag reducing agents is a polymer linear polymer PAM class. During the synthesis process, a hydrophilic group is introduced into its molecular backbone through a special production process, which makes the product easier to disperse and dissolve in water and reduces friction. If an appropriate amount of polymer drag reducing agent is added to the water, the pumping friction can be reduced by more than 70% compared with the water friction.
III. Application Prospects of Degradable Polymer Fracturing Fluid Thickeners
1. Petroleum exploration field: Degradable polymer fracturing fluid thickeners can replace traditional thickeners, reduce environmental pollution, improve mining efficiency, and have broad application prospects.
2. Environmental protection field: The application of degradable polymer fracturing fluid thickeners can reduce the risk of pollution to groundwater and soil, and contribute to environmental protection.
3. Renewable resource utilization: The preparation of biodegradable polymer fracturing fluid thickeners uses biomass resources, which helps to improve resource utilization efficiency and achieve circular economy development.
IV. Conclusion
Degradable polymer fracturing fluid thickeners, as an environmentally friendly thickener, have a wide range of application prospects in the field of oil extraction. By selecting suitable degradable polymers, optimizing the preparation process and improving the application technology, the performance and stability of degradable polymer fracturing fluid thickeners can be further improved, and a more sustainable oil extraction process can be achieved.