PROCEDURE FOR SUMP BUILDING AT CONSTRUCTION OF OIL-GAS CONDENSATE DEPOSITS Russian patent published in 2011 - IPC E21B21/06 

FIELD: oil and gas production.

SUBSTANCE: procedure consists in digging foundation pit in soil and in hydro-insulation of its cavity. Also, here there is used processing waste of drilling in form of mixture of spent process solution with cuttings - slime. Preliminary, waste is mixed with sand till obtaining uniform mass, at ratio: sand 50-80%, spent drill agent with slime 20-50%. Further, solid phase is mixed with sand to a condition of a soft clay and produced mixture is cured during 10-15 hours. Successively, cured mixture is transported to a prepared from sand foundation pit-sump of gas-flare (sump of GF). A bottom and internal slopes of sump of GF surface are lined with this mixture at height of at least 0.5 m. The cavity of the GF sump is hydro-isolated. Its strengthened structure is formed through process specified gas-hydro-dynamic analysis of a well followed with combustion of gas flare, by means of which the constructed bottom and internal slopes of GF sump surface are thermally burned in a flare flame.

EFFECT: reduced prime cost and increased reliability of ecological safety of environment.

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