Methods and compositions for cementing subterranean zones

Details Methods and compositions for cementing subterranean zones Methods and compositions for cementing subterranean zones

2005-01-18

2005-01-18

Green, Anthony J. (Department: 1755)

Compositions: coating or plastic

Coating or plastic compositions

Inorganic settable ingredient containing

C106S696000, C106S708000, C106S725000, C106S728000, C106S781000, C106S790000, C106S808000, C106S810000, C106S823000, C166S293000, C166S295000, C507S227000, C507S269000, C523S130000, C524S005000

Reexamination Certificate

active

06843846

ABSTRACT:
Methods and compositions for cementing subterranean zones penetrated by well bores are provided. The methods are basically comprised of the steps of providing a cement composition which comprises a hydraulic cement, sufficient water to form a slurry and a dispersing agent comprising a tetrapolymer formed of methacrylic acid, methacrylate, methallyl sulfonic acid and ethoxylated acrylic acid. The cement composition is placed in the subterranean zone to be cemented and allowed to set into an impermeable solid mass therein.

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