OIL-FIELD MATERIAL SUPPLY DEVICE AND METHOD Russian patent published in 2015 - IPC E21B43/267 

FIELD: oil and gas industry.

SUBSTANCE: group of inventions relates to extraction of oil and gas from underground formations. A method of action of at least one high pressure vessel for pumping of a suspension of solid particles to a high pressure line involves the first working cycle containing insulation of at least one high pressure vessel from the high pressure line and introduction of crushed solid particles to the high pressure vessel through an inlet hole for crushed solid particles. Besides, the method involves the second working cycle comprising creation of a high pressure flow to the high pressure vessel, creation of a flow of the high pressure suspension from the high pressure vessel to the high pressure line and pressure equalising of the high pressure vessel and the high pressure line by increase of pressure in the high pressure vessel prior to supply of the flow of clean high pressure fluid medium to the high pressure vessel. At least one high pressure vessel includes a single-chamber tank having a possibility of creation of a heterogeneous suspension flow.

EFFECT: improvement of efficient pumping of the suspension flow to the formation.

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