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By adding a certain amount of heat generating agent in the fracturing fluid to react and release heat, and heating the fracturing fluid and the reservoir near the well, the technology will not cause "cold damage" to the oil layer after the fracturing fluid enters the fracture, and at the same time, a certain amount of N2 gas will be generated and evenly dispersed in the crosslinked fracturing fluid to form a foam like fracturing fluid, which will greatly reduce the filtration rate, improve the fracturing flowback rate, and achieve low damage to the low-pressure permeability reservoir, Suitable for reservoirs with low energy and difficult backflow after fracturing.
Main technical parameters:
| Testing items | Technical Parameter |
| cross-linking time，s | 10～240 |
| temperature resistance，℃ | ＞120 |
| residue rate，mg/L | ＜100 |
| Viscosity of gel breaking liquid，mPa·s | ≤5 |
| gel breaking time，min | ≤720 |
