Composition of drilling fluids comprising ground elastomeric crumb rubber material and a method of decreasing seepage and whole mud loss using such composition
OwnerSteve Cartinventor
Life of this patent
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Abstract
Well-working fluid compositions containing certain processed inorganic, oil and water wettable ground elastomeric crumb rubber materials to decrease the seepage loss of various fluids to subterranean formations in which these well working fluids are required and utilized are disclosed. Also disclosed is a method of reducing the seepage and whole mud loss of these well working fluids utilizing such ground elastomeric crumb rubber materials.
Claims16
An oil base well working fluid comprising a major proportion and a minor proportion of ground elastomeric crumb rubber sealant material, wherein said sealant material:
- (a) has a particle size ranging from about 0.4 microns to about 2000 microns;
- and
- (b) is oil and water wettable.
An oil base well working fluid comprising:
- (a) a major proportion of oil and a minor proportion of ground elastomeric crumb rubber sealant material, said material having a particle size ranging from about 0.4 microns to about 2000 microns;
- and
- (b) a fluid loss additive selected from the group consisting of asphaltic materials, organophilic humates, and organophilic lignosulfonates.
A water base well working fluid comprising a major portion of water and minor portion of ground elastomeric crumb rubber sealant material, wherein said ground elastomeric crumb rubber sealant material:
- (a) has a particle size ranging from about 0.4 microns to about 2000 microns;
- and
- (b) is oil and water wettable.
A water base well working fluid comprising:
- (a) a major portion of water and minor portion of ground elastomeric crumb rubber sealant material, said ground elastomeric crumb rubber sealant material having a particle size ranging from about 0.4 microns to about 2000 microns;
- and
- (b) a fluid loss additive selected from the group consisting of lignite, starch, carboxymethyl cellulose, carboxymethyl starch, and polyacrylates.
A method of decreasing seepage and whole mud loss to subterranean formations during a drilling process having a drill string, said method comprising the steps of:
- providing a drilling fluid composition comprising oil and water wettable ground elastomeric crumb rubber sealant material, said material having a particle size ranging from 0.4 microns to about 2000 microns;
- and
- circulating said drilling fluid in said drill string during said drilling process.
Dependencies are inferred from the claim text.