Clay-free wellbore fluid

Compositions – Leather or fur treating

Patent

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Details

252 85C, 252 85P, 252 855R, C09K 702

Patent

active

041406397

ABSTRACT:
A clay-free, i.e., non-argillaceous brine wellbore fluid having unstructured viscosity and improved water loss properties from an additive composition present in an amount of 0.1 to 3 weight % based on wellbore fluid and consisting essentially of 15 to 95 weight % of guar gum or hydroxyalkyl guar gum and 5 to 85 weight % of a water soluble salt, preferably alkaline earth salt of lignosulfonate.

REFERENCES:
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patent: 3483121 (1969-12-01), Jordan
patent: 3677961 (1972-07-01), Browning et al.
patent: 3723408 (1973-03-01), Nordgren et al.
patent: 3878110 (1975-04-01), Miller et al.
patent: 3988246 (1976-10-01), Hartfiel
patent: 4003838 (1977-01-01), Jackson et al.
patent: 4025443 (1977-05-01), Jackson

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