Methods, compositions and biodegradable fluid loss control...

Details Methods, compositions and biodegradable fluid loss control... Methods, compositions and biodegradable fluid loss control...

2005-01-11

2005-01-11

Tsay, Frank (Department: 3672)

Wells

Processes

Cementing, plugging or consolidating

C166S283000, C106S725000

Reexamination Certificate

active

06840319

ABSTRACT:
Methods, compositions and fluid loss control additives for cementing in subterranean zones are disclosed. A composition comprises a hydraulic cement, sufficient water to from a slurry and a water soluble biodegradable fluid loss control additive comprising a mixture of a condensation product and hydroxyethylcellulose having a molar substitution in the range of from about 1 mole to about 2.5 moles of ethylene oxide.

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