Utilization of drilling cuttings with extraction of ground for recultivation of disturbed soils

[摘要] Drilling of wells is connected with formation of the bore mud represented by the drill cutting with waste drilling mud. Bore mud has negative physical-chemical, physical and chemical properties: high content of salts, increased alkalinity, ash structure, soil overcrust, low airing, weak filterability and so on. In case of phosphogypsum adding to the bore mud, pH level decreases from the alkaline (10.5 U) to weakly alkaline 7.6 U, decrease of pH is connected with the influence of phosphogypsum acidity and neutralization of the more mud. Concentration of chloride ions and sulphate ions in reclaimed bore mud was 707 and 45646 correspondingly. Presence of oil products in received soil was 198.0-219.0 mg/kg. When adding phosphogypsum, sand, sorbent and humic formulation «Rostok» to the bore mud, it has shown good germinating ability of cultures- phytomeliorants (93,3%). 100% germinating ability was observed in meadow grass with a height of overground sprouts 10.7 cm, germinating ability of red fescue was 80% with height of overground sprouts 9.6 cm.

[发布机构] FSBEI of Higher Education Tumen Industrial University, 2, Lunacharskogo St., Tumen; 625001, Russia^1;R and D Institute Neftegazsproekt, Melnikaite str. 70, Tumen; 625027, Russia^2

[效力级别] 电工学

[关键词] Chloride ions;Disturbed soil;Drill cuttings;High-content;Phosphogypsum;Physical and chemical properties;Recultivation;Waste drilling muds