COMPOSITION AND METHOD OF SOLID FOAMING AGENT PREPARATION FOR LIQUID REMOVAL FROM THE GAS AND GAS CONDENSATE WELLS BOTTOMHOLES Russian patent published in 2017 - IPC C09K8/524 

FIELD: oil and gas industry.

SUBSTANCE: composition for the solid foaming agent preparation to remove the liquid from the gas and gas condensate wells bottomhole, containing the surface-active agent-SAA, the urea, the carboxymethylcellulose-CMC, MORPEN is used as SAA, it represents the mixture of water- and oil-soluble alkyl sulfates and sodium sulfoethoxylates, at the following ratio of components, mass. %: MORPEN 24.9-28.4, urea 71.1-74.6, CMC 0.5-1.0. The method of the solid foaming agent preparation to remove liquid from the gas and the gas condensate wells bottomhole from the above mentioned composition, including the urea dissolving in the SAA MORPEN at the temperature of 80-90°C up to the formation of the true solution, the gradual introduction of the CMC into the obtained solution, while stirring, and then pouring of the resulted mixture into the moulds and completely curing of the composition.

EFFECT: increase of the foaming capacity, provision of the effective liquid removal from the gas and gas condensate wells bottomhole at various salinity of the borehole fluid, over the wide range of the hydrocarbon phase, and keeping of the physical and chemical properties of the foaming agent at high temperatures.

2 cl, 5 tbl, 4 ex