Using CO₂ intelligent responsive surfactant as the main agent, a fracturing energy enhancing and displacement displacement system is prepared. When it meets CO₂, it forms an intelligent gel and automatically breaks when encountering oil. The gel breaking fluid has excellent permeability and oil drainage performance.

R&D philosophy: Small molecule surfactants (low damage)+nanoparticles (volume effect, surface effect, etc.)

We have developed highly active, self-assembled amide based amphoteric surfactants and self dispersed silica based active nanoparticles (10-20nm).

Main technical parameters:

(1) Temperature resistance of 140 ℃, high drag reduction (>75%), excellent oil permeability and drainage (22.5%);

(2) Small molecule surfactant as the main agent, automatically breaking the gel when encountering oil (<5mPa·s), without residue, low damage (<10%);

(3) The mother liquor is a single liquid with stable performance (>1year), and quickly thickens when encountering water, meeting the requirements of "continuous mixing, ready to use, and adjustable viscosity (fine) throughout the entire process";

(4) During the construction process, the liquid should not fall to the ground, and the ground should be clean and environmentally friendly;

(5) After fracturing, there is no need for backflow, and the well can be directly opened for production after being closed (2-10 weeks)；

(6) It has obvious advantages in large-scale and large displacement construction, fracturing process control, cost control, etc.