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Method and composition for cementing in a wellbore

Patent ·
OSTI ID:5598927
;
This patent describes a method of cementing in a wellbore penetrating subterranean formations. It comprises: mixing a predetermined quantity of Portland cement containing at least 2 percent by weight of the predetermined quantity of Portland cement of tricalcium aluminate; at least 2 percent by weight of the predetermined quantity of the Portland cement of gypsum; and 0.3--2.0 percent by weight of the predetermined Portland cement of polyvinyl alcohol that is formed by less than 92 percent hydrolysis of the acetate moieties of polyvinyl acetate to polyvinyl alcohol; and sufficient water to form a pumpable cement slurry; and pumping the slurry to a desired location in the wellbore; and allowing the slurry to harden to a solid mass.
Assignee:
Atlantic Richfield Co., Los Angeles, CA (USA)
Patent Number(s):
A; US 4967839
Application Number:
PPN: US 7-428356
OSTI ID:
5598927
Country of Publication:
United States
Language:
English

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Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
ALKALINE EARTH METAL COMPOUNDS
ALUMINATES
ALUMINIUM COMPOUNDS
BUILDING MATERIALS
CALCIUM COMPOUNDS
CALCIUM SULFATES
CEMENTING
CEMENTS
CHEMICAL COMPOSITION
GYPSUM
MATERIALS
MINERALS
NATURAL GAS WELLS
OIL WELLS
OXYGEN COMPOUNDS
PORTLAND CEMENT
SULFATE MINERALS
SULFATES
SULFUR COMPOUNDS
WELL COMPLETION
WELLS