METHOD OF PRODUCING DRILLING FLUIDS FROM WASTEWATER OBTAINED DURING SHALE GAS EXTRACTION

METHOD OF PRODUCING DRILLING FLUIDS FROM WASTEWATER OBTAINED DURING SHALE GAS EXTRACTION

A method of producing hydraulic fracturing fluid from wastewater obtained during the shale gas extraction is disclosed wherein H 2 O 2 is added to the flowback water which is then mixed until the redox potential of 700-720 mV is achieved; then the 5% Ca(OH) 2 suspension in 10% solution of NaCO 3 is...

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Bibliographische Detailangaben
Hauptverfasser: KWIATKOWSKI, Zygmunt, ZUKOWSKA, Grazyna, PAWLOWSKI, Lucjan, PAWLOWSKI, Artur, PAWLOWSKA, Malgorzata, BARAN, Stanislaw
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
CHEMISTRY
METALLURGY
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Zusammenfassung:A method of producing hydraulic fracturing fluid from wastewater obtained during the shale gas extraction is disclosed wherein H 2 O 2 is added to the flowback water which is then mixed until the redox potential of 700-720 mV is achieved; then the 5% Ca(OH) 2 suspension in 10% solution of NaCO 3 is added and intensively mixed to obtain pH of 11.15 ± 0.15, the precipitate is then separated by a known method, most preferably by means of a centrifuge.