Method of cementing a well bore using a fluid loss additive

Details Method of cementing a well bore using a fluid loss additive Method of cementing a well bore using a fluid loss additive

1982-06-14

1983-11-08

Novosad, Stephen J.

Wells

Processes

Cementing, plugging or consolidating

166283, 106 90, E21B 33138, E21B 3314

Patent

active

044136811

ABSTRACT:
A fluid loss additive and method are shown for use in cementing oil and gas well bores which comprises the reaction product of a polyamine compound and a high molecular weight sulfonated polymer. The polyamine and high molecular weight sulfonated polymer are prereacted in solution and dried to form a dry product which can be added to the dry cement blend on the shelf or added to the mixing water during the formation of the cement slurry at the well site. The prereacted additive is effective to control fluid loss in cement slurries at 350.degree. F. and higher.

REFERENCES:
patent: 3070165 (1962-12-01), Stratton
patent: 3409080 (1968-11-01), Harrison
patent: 4210455 (1980-07-01), Metcalf et al.

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