Oil well spacer fluids

Details Oil well spacer fluids Oil well spacer fluids

1978-05-01

1980-08-12

Guynn, Herbert B.

Compositions

Leather or fur treating

166244R, 166291, E21B 4300

Patent

active

042172292

ABSTRACT:
A high stability, nondamaging spacer fluid is provided containing readily available weighting agents such as calcium carbonate and iron carbonate dispersed in water using a polymer viscosifier, a salt inhibitor, a primary sulfonated dispersant and a secondary fatty acid amide dispersion. Conventional high density weighting agents can also be used. The spacer fluid is stable over a temperature range of about 32.degree.-300.degree. F. for extended periods with densities ranging from 11 to 17.6 pounds per gallon.

REFERENCES:
patent: 3753903 (1973-08-01), Fischer et al.
patent: 3849316 (1974-11-01), Motley et al.
patent: 3850248 (1974-11-01), Carney
patent: 3852201 (1974-12-01), Jackson
patent: 3878895 (1975-04-01), Wieland et al.
patent: 3898165 (1975-08-01), Ely et al.
patent: 3986979 (1976-10-01), Moorer et al.
patent: 3993570 (1976-11-01), Jackson et al.
patent: 4141843 (1979-02-01), Watson

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