PROCEDURE FOR PUMPING HYDROCARBONS INTO PERMEABLE BED Russian patent published in 2010 - IPC B65G5/00 

FIELD: gas-and-oil industry.

SUBSTANCE: invention refers to gas-and-oil industry, particularly to purification and pumping hydrocarbons into permeable rock for their storage; it can be also used at operation of oil, gas, and gas-condensate deposits, products of which contain hydrogen sulphide. The procedure consists in drilling a borehole, in exposing a permeable bed, in constructing a cavern above the permeable bed and in connecting it with a borehole. Further, the cavern is filled with liquid absorber/neutraliser of hydrogen sulphide; stored product or its mixture with oxidant or liquid absorber/neutraliser of hydrogen sulphide is pumped into the borehole. According to the invention density of liquid absorber/neutraliser filling the cavern is set above density of product containing hydrogen sulphide or its mixture with oxidant pumped into the borehole. An assembly of two concentric pipe strings is lowered into the borehole. A shoe of an external pipe string is positioned between a bottom of the cavern and roof of the permeable bed exposed with the borehole. Annular space between the external pipe string and a casing in an interval below the bottom of the cavern is straddled with a packer; radial insertions with jet-dispersive channels communicating an internal cavity of the external pipe string with the cavern are arranged above the packer in walls of the external pipe string. Also branches communicating annular space between the external pipe string and the casing with the cavity of the internal pipe string are positioned in the interval above the cavern. Annular space between the external and internal pipe strings is straddled with the packer in the interval below the radial insertions with the jet-dispersive channels. In a lower part of the internal pipe string there is installed a circulation valve regulating modes of product pumping into the permeable bed, modes of extracting it from the cavern or modes of regeneration of used liquid hydrogen sulphide absorber/neutraliser in the cavern.

EFFECT: raised efficiency of hydrocarbon products purification and pumping into permeable bed.

2 cl, 3 dwg