Method of using a porous Fe.sub.3 O.sub.4 drilling mud additive

Details Method of using a porous Fe.sub.3 O.sub.4 drilling mud additive Method of using a porous Fe.sub.3 O.sub.4 drilling mud additive

1976-03-12

1977-02-22

Novosad, Stephen J.

Boring or penetrating the earth

Processes

Chemical reaction with earth formation or drilling fluid...

166244C, 252 85R, 252 85B, C09K 704

Patent

active

040087751

ABSTRACT:
An iron oxide having the ideal composition Fe.sub.3 O.sub.4 has a unique high porosity, substantially spherical particle structure. Used in oil and gas well drilling muds, it scavenges hydrogen sulfide. It also improves the rheological properties of the mud, maintains its stability under high temperatures, and functions as a mud weighting material. Upon completion of drilling, the drilling mud containing the porous Fe.sub.3 O.sub.4 additive may be left in place between the inner casing and the formation wall or the outer casing as a packer fluid.

REFERENCES:
patent: 1771136 (1930-07-01), Murphy
patent: 2003701 (1935-06-01), Stinson
patent: 2276075 (1942-03-01), Wuensch
patent: 2298984 (1942-10-01), Stinson
patent: 2941783 (1960-06-01), Stinson
patent: 3301323 (1967-01-01), Parsons
patent: 3307625 (1967-03-01), Johnson et al.
patent: 3576221 (1971-04-01), Hasiba
patent: 3618667 (1971-11-01), Snavely
patent: 3713499 (1973-01-01), Arscott et al.

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