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US 4,584,327 AGranted
Environmentally compatable high density drilling mud, cement composition or blow-out fluid
AssigneeHalliburton Company
InventorDavid L. Sutton
Life of this patent
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Abstract
An environmentally compatible high density drilling, blow-out control fluid, or cement composition is provided wherein densities between twenty-four (24) and forty (40) pounds per gallon can be achieved. Such preferred fluid is aqueous based, uses a non-toxic gelling agent such as fine iron oxide powder, a coarser first weighting material such as fine iron powder, and a second still coarser weighting material such as iron shot, steel shot or mixtures thereof.
Claims20
A high density fluid having cementitious properties comprising:
- (a) water;
- (b) a gelling agent selected from the group consisting of oxides of antimony, zinc oxide, barium oxide, barium sulfate, barium carbonate, iron oxide, hematite, other irons ores and mixtures thereof wherein said gelling agent has an average particle diameter size in the range of from about 0.5 to about 10.0 micrometers;
- (c) hydraulic cement wherein said hydraulic cement has an average particle size in the range of from about 30 to about 200 micrometers wherein said hydraulic cement and said gelling agent have a physical makeup with regard to fine particle size, high density and intersurface attraction properties sufficient to create a slurry with said water that has a gel strength of at least 10 pounds per 100 square feet;
- (d) a weighting material selected from the group consisting of iron powder, hematite, other iron ores, steel shot, tungsten, tin, manganese, iron shot, and mixtures thereof wherein said weighting material has an average particle diameter size of from about 2 to about 20 times the average particle size of the gelling agent;
- said fluid having a density of from 24 pounds per gallon to about 40 pounds per gallon.
2 more elements
A cementitious composition having a density of about 29.7 pounds per gallon and comprising:
- (a) a gelling agent present in an amount of about 25 parts by weight of said composition and comprising red iron oxide having an average particle size in the range of from about 2.5 to about 3.0 micrometers;
- (b) a first weighting agent present in an amount of about 115 parts by weight of said composition and comprising hematite having an average particle size in the range of from about 75 to about 85 micrometers;
- (c) a second weighting agent present in an amount of about 600 parts by weight of said composition and comprising hematite having an average particle size in the range of from about 700 to about 800 micrometers;
- (d) Portland cement present in an amount of about 100 parts by weight of said composition and having an average particle size in the range of from about 30 to about 200 micrometers;
- (e) water present in an amount of about 80 parts by weight of said composition;
- and,
- (f) a dispersing agent comprising a hydroxyethyl cellulose derivative present in an amount of about 1.5 parts by weight of said composition.
4 more elements
A method of cementing in an annulus between a well casing and a borehole comprising placing in said annulus a cementitious composition comprising:
- (a) water;
- (b) a gelling agent selected from the group consisting of oxides of antimony, zinc oxide, barium oxide, barium sulfate, other irons ores and mixtures thereof wherein said gelling agent has an average particle diameter size in the range of from about 0.5 to about 10.0 micrometers;
- (c) hydraulic cement wherein said hydraulic cement has an average particle size in the range of from about 30 to about 200 micrometers wherein said hydraulic cement and said gelling agent have a physical makeup with regard to fine particle size, high density and intersurface attraction properties sufficient to create a slurry with said water that has a gel strength of at least 10 pounds per 100 square feet;
- and
- (d) a weighting material selected from the group consisting of iron powder, hematite, other iron ores, steel shot, tungsten, tin, manganese, iron shot, and mixtures thereof wherein said weighting material has an average particle diameter size of from about 2 to about 20 times the average particle size of the gelling agent;
- said cementitious composition having a density of from 24 pounds per gallon to about 40 pounds per gallon.
3 more elements
Dependencies are inferred from the claim text.