RECLAMATION METHOD OF DRILLING SLUDGE PIT Russian patent published in 2015 - IPC B09C1/00 E21C41/32 

FIELD: technological processes.

SUBSTANCE: invention relates to the reclamation of sludge pits, production of artificial earth mixtures based on drilling sludge and can be used in the mining and oil-producing industries. The method consists in the subsequent collection of liquid oil, then, bituminised oil from water surface of the pit, pumping-out of a water phase from the pit, creation of cutting backfills, collection of the bituminised oil from the surface of the drilling sludge, collection of the bituminised oil, oil sludge and oil-contaminated soil from the diking surface of the drilling sludge pit, mixing of the obtained drilling sludge with peat and sand in the following ratio, vol %: drilling sludge not more than 75.0, peat not less than 18.0, sand not less than 7.0, at the total content of the components, which is equal to 100 vol % in the volumes providing the obtainment of soil performing a function of soil-forming rock, with further quality control of the soil, reinforcement of its surface, creation of a fertile layer and by planting; with that, the total volume value of the soil performing the function of the soil-forming rock, volume of a material for the creation of cutting strips, volume of a material for the reinforcement of the soil surface, volume of a material for the creation of the fertile layer is chosen based on the equality or non-exceedance of the volume of the drilling sludge pit.

EFFECT: obtaining the soil performing the function of the soil-forming rock - a component of natural environment, which has improved quality characteristics.

2 cl, 7 tbl, 1 ex