Stable suspension of hydrocolloids and superplasticizer
AssigneePharmacia Corporation
InventorsBryan Skaggs, Harold Dial, Walter Rakitsky
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Abstract
The present invention comprises a stable hydrocolloid composition in which preferably welan gum is uniformly dispersed in a superplasticizer solution such as sulfonated naphthalene, sulfonated melamine, modified lignosulfate, their derivatives and solution thereof. The mixture is wet milled to form an extremely fine particle size, from about 3 microns to about 500 microns distribution of the gum. The composition is rapidly hydratable and useful as a stabilizing additive in many cement and drilling fluid applications.
Claims15
An improved stabilized suspension comprised of a rapidly hydratable hydrocolloid uniformly dispersed in a superplasticizer solution, wherein said hydrocolloid and superplasticizer are milled together to a particle size range of from about 3 .mu.m to about 500 .mu.m.
An improved cementitious grout with improved bond strength, flowability and stability comprising a stabilized suspension consisting of a rapidly hydratable hydrocolloid uniformly dispersed in a superplasticizer solution, wherein said hydrocolloid and superplasticizer are milled together to a particle size range of from about 3 .mu.m to about 500 .mu.m.
An anti-washout composition for flushing subterranean oil formations comprising a liquid stabilized suspension consisting of a rapidly hydratable hydrocolloid uniformly dispersed in a superplasticizer solution, wherein said hydrocolloid and superplasticizer are milled together to a particle size range of from about 3 .mu.m to about 500 .mu.m.
Dependencies are inferred from the claim text.