Use of manganese oxide in drilling mud and oil well cement...

Details Use of manganese oxide in drilling mud and oil well cement... Use of manganese oxide in drilling mud and oil well cement...

E - Fixed Constructions

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B

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E21B 33/14 (2006.01) C01G 45/02 (2006.01) C04B 14/30 (2006.01) C09K 8/03 (2006.01) C09K 8/46 (2006.01)

Patent

CA 1315969

ABSTRACT The present invention relates to the use of manganomanganic oxide particles containing at least 90 % by weight of manganomanganic oxide, said particles having a density of 4.50 to 4.75 g/cm3 and a particle size of at least 98 % below 10 um, as a weight material for drilling mud fluids and for cement slurries for cementing oil wells. The manganomanganic oxide particles which are used are preferably recovered from off-gases which evolves during refining of ferro-manganese melts.

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