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

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

1989-02-24

1991-04-16

Suchfield, George A.

Wells

Processes

Cementing, plugging or consolidating

106683, 106733, 106819, 175 65, 252 851, C09K 704, E21B 2100, E21B 3314

Patent

active

050074806

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/cm.sup.3 and a particle size of at least 98% below 10 .mu.m, 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.

REFERENCES:
patent: 2279262 (1942-04-01), Edwards
patent: 3305352 (1967-02-01), Day
patent: 3658701 (1972-04-01), McGlothlin et al.
patent: 4447339 (1984-05-01), Detrot
patent: 4584327 (1986-04-01), Sutton
patent: 4855083 (1989-08-01), Kagawa et al.

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