Quick-setting cement composition containing Portland Cement, alpha gypsum and a dispersant

Patent · Tue Jun 01 00:00:00 EDT 1971

OSTI ID:5707101

Ames, T S

Craters and earth voids are quickly filled with a high-strength, quick-setting cement composition comprising a mixture of cement material consisting essentially of from about 9.5 to about 4 Pt. by wt of calcium sulfate hemihydrate to about 0.5 to about 6 Pt. by wt of Portland cement and water which is present in a quantity of from about 22% to about 70% by wt. According to the desired uses, accelerators, retardants or dispersants are added to the mixture. The quick-setting cement composition consists of from 9.5 to 7 Pt. by wt of alpha gypsum to 0.5 to 30 Pt. by wt of Portland cement along with from about 22% to about 4% water by wt, based upon the cement material. (8 claims)

• Assignee: Western Co. North America
• Patent Number(s): US 3582376
• OSTI ID: 5707101
• Resource Relation: Patent File Date: Filed date 9 Sep 1968; Other Information: PAT-APPL-767,893
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
03 NATURAL GAS
NATURAL GAS WELLS
PLUGGING
OIL WELLS
CEMENTS
COMPRESSION STRENGTH
CRATERS
GYPSUM
HARDENING
MIXTURES
OPENINGS
PORTLAND CEMENT
QUANTITY RATIO
SAND
SLURRIES
STABILIZATION
SURFACTANTS
WATER
ALKALINE EARTH METAL COMPOUNDS
BUILDING MATERIALS
CALCIUM COMPOUNDS
CALCIUM SULFATES
CAVITIES
DISPERSIONS
HYDROGEN COMPOUNDS
MATERIALS
MECHANICAL PROPERTIES
MINERALS
OXYGEN COMPOUNDS
SULFATES
SULFUR COMPOUNDS
SUSPENSIONS
WELLS
020300* - Petroleum- Drilling & Production
030300 - Natural Gas- Drilling
Production
& Processing