Process for the preparation of fluid loss additive and gel break

Details Process for the preparation of fluid loss additive and gel break Process for the preparation of fluid loss additive and gel break

1989-05-18

1991-01-22

Suchfield, George A.

Wells

Processes

Cementing, plugging or consolidating

166281, 166283, 252 8551, 523130, E21B 33138, E21B 4326

Patent

active

049863550

ABSTRACT:
A melted polymer of hydroxyacetic acid with itself or with other hydroxy-, carboxylic acid-, or hydroxycarboxylic acid-containing moieties is subjected to high shear and injected into an organic liquid which is inert to the polymer to form an organic liquid dispersion of very fine polymer particles. In one aspect the melted polymer is combined with the organic liquid and the combination is thereafter subjected to high shear to form the fine particle polymer dispersion. A dispersion agent may also be used to aid in dispersing the particles. The dispersion is used for fluid loss control and gel breaking in subterranean formations.

REFERENCES:
patent: 3990978 (1976-11-01), Hill
patent: 4387769 (1983-06-01), Erbstoesser et al.
patent: 4526695 (1985-07-01), Erbstoesser et al.
patent: 4715967 (1987-12-01), Bellis et al.
patent: 4848467 (1989-07-01), Cantu et al.

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