HYDROCARBON GEL BASED ON ALUMINUM SALTS OF ORGANIC ORTHOPHOSPHATE ESTERS Russian patent published in 2002 - IPC

FIELD: oil and gas producing industry; compositions of gel-like fluids on hydrocarbon basis as sand carriers for hydraulic fracturing of formation. SUBSTANCE: hydrocarbon gas includes gel-forming agent containing organic orthophosphate esters, activator containing aluminum alcoholate, nitrogen-containing complexing agent and hydrocarbon fluid - gas condensate or crude oil, or diesel fuel. Gel-forming agent, activator and hydrocarbon fluid has the following ratio of components, %: gel-forming agent, 0.5-10.0; activator, 0.5-10.0; hydrocarbon fluid, the balance. Gel-forming agent additionally has solvent - kerosene, or demoralizate, or diesel fuel and nitrogen-containing complexing agent is includes into composition of gel-forming agent and contains dimethyl-ethanolamine, or diethyl-ethanolamine, or methyl-diethanolamine, or ethyl-diethanolamine, with the following ratio of components, %: organic orthophosphate esters, 55-65; nitrogen-containing complexing agent, 15-35; solvent, the balance. Activator additionally has triethanolamine, solvent in the form of kerosene, or denormalizate, or diesel fuel, and aluminum alcoholate in the form of aluminum isopropylate, or aluminum secbutanolate, or aluminum chelate, or petrosurf XL, with the following ratio of components, vol.%: aluminum alcoholate, 25-70; triethanolamine, 5-30; solvent, the balance. Composition additionally contains destructing agent in the form of sodium carbonate or bicarbonate in amount of 0.5-10.0 kg/cu.m of gel. EFFECT: increased thermal stability of hydrocarbon gel; simplified process of gel preparation. 2 cl, 3 tbl, 22 ex