Instant Gel Fracturing Fluid

1. System Characterizations

This system requires a certain type of plant gel as thickener, such as fast hydrated guar or liquid guar. This system can accomplish hydration and be crosslinked with crosslinker to form fracturing gel in 3 minutes so the mixing time duration is dramatically cut. Thus this system can fully satisfy the requirement of large scale fracturing treatment.

2. Property Indices

Items			Product Indices
20℃-60℃			60℃-120℃	20℃-60℃
Apparent viscosity of base fluid, mPa.s	10~40		20~80	30~100
Time for swelling to 80% viscosity, min			≤3.0
Crosslinking time, s	15~60		30~120	60~300
Gel apparent viscosity, mPa.s			≥50
Matrix permeability damage ratio, %			≤30
Viscosity of broken gel, mPa.s			≤5.0
Surface tension, mN/m			≤28.0
Interface tension, mN/m			≤2.0
Residual content, mg/L			≤600
Emulsion breaking ratio, %			≥95
Friction reduction ratio, %			≥50
Compatibility		No precipitate; no flocculation

3. Application for Treatment

Rapid swelling rate of the thickener satisfies large scale fracturing treatment demands; add PH controller and then add crosslinker into the base fluid according to design to form the crosslinked fracturing gel, and then mix the fluid system with proppant in the blending unit according to pumping schedule for treatment execution.