Experiments were done to optimize the oil base fracturing fluids, in which the dewatered crude from Huangchang oilfield was used as the base fluid, LHPG02 (a phosphate) was used as the gelling agent, sodium metaaluminate as the cross-linking agent, and anhydrous sodium acetate as the gel breaker.

The synthesis condition of gelling agent phosphate ester in oil base fracturing fluid is studied on this paper.

Experimental study of oil based fracturing fluid: LHPG-2000;