Drilling fluid additive containing high pyruvate xanthan

Details Drilling fluid additive containing high pyruvate xanthan Drilling fluid additive containing high pyruvate xanthan

1985-06-03

1987-11-17

Guynn, Herbert B.

Compositions

Leather or fur treating

252 851, 252 8551, 2523153, C09K 702

Patent

active

047072814

ABSTRACT:
A drilling fluid additive comprises high pyruvate xanthan and locust bean gum in a weight ratio of about 40:60 to 80:20. The additive increases the viscosity of the drilling fluid at low shear, has improved thermal stability, and increases the capacity of the fluid to suspend high density weighting materials.

REFERENCES:
patent: 3018245 (1962-01-01), Owen
patent: 3198268 (1965-08-01), Lindblom et al.
patent: 3557016 (1971-01-01), Schuppner
patent: 3988246 (1976-10-01), Hartfiel
patent: 4046197 (1977-09-01), Gruesbeck et al.
patent: 4119546 (1978-10-01), Wernau
patent: 4322301 (1982-03-01), Blackmore
Sandford et al., Am. Chem. Soc. Symp. Ser., 1977, 45, pp. 192-210.
Philips et al., SPE Paper 10617, Dallas, Tex., Symposium on Oil Field and Geothermal Chemistry, Jan. 1982.

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